/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-BasicCegarLoop.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/fibonacci.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 02:47:53,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 02:47:53,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 02:47:53,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 02:47:53,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-BasicCegarLoop.epf [2022-02-10 02:47:54,016 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 02:47:54,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 02:47:54,017 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 02:47:54,017 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 02:47:54,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 02:47:54,018 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 02:47:54,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 02:47:54,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 02:47:54,019 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 02:47:54,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 02:47:54,020 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 02:47:54,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 02:47:54,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 02:47:54,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 02:47:54,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 02:47:54,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 02:47:54,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 02:47:54,020 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 02:47:54,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 02:47:54,021 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 02:47:54,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 02:47:54,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 02:47:54,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 02:47:54,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 02:47:54,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 02:47:54,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 02:47:54,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 02:47:54,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 02:47:54,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 02:47:54,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 02:47:54,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 02:47:54,022 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 02:47:54,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 02:47:54,023 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-10 02:47:54,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 02:47:54,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 02:47:54,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 02:47:54,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 02:47:54,249 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 02:47:54,251 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 02:47:54,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/fibonacci.wvr.bpl [2022-02-10 02:47:54,252 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/fibonacci.wvr.bpl' [2022-02-10 02:47:54,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 02:47:54,274 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 02:47:54,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 02:47:54,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 02:47:54,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 02:47:54,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:47:54" (1/1) ... [2022-02-10 02:47:54,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:47:54" (1/1) ... [2022-02-10 02:47:54,301 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 02:47:54,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 02:47:54,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 02:47:54,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 02:47:54,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 02:47:54,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:47:54" (1/1) ... [2022-02-10 02:47:54,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:47:54" (1/1) ... [2022-02-10 02:47:54,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:47:54" (1/1) ... [2022-02-10 02:47:54,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:47:54" (1/1) ... [2022-02-10 02:47:54,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:47:54" (1/1) ... [2022-02-10 02:47:54,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:47:54" (1/1) ... [2022-02-10 02:47:54,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:47:54" (1/1) ... [2022-02-10 02:47:54,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 02:47:54,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 02:47:54,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 02:47:54,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 02:47:54,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:47:54" (1/1) ... [2022-02-10 02:47:54,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 02:47:54,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:54,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-10 02:47:54,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-10 02:47:54,391 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-10 02:47:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 02:47:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 02:47:54,391 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-10 02:47:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 02:47:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 02:47:54,392 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-10 02:47:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 02:47:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 02:47:54,394 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 02:47:54,436 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 02:47:54,437 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 02:47:54,499 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 02:47:54,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 02:47:54,526 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-10 02:47:54,528 INFO L202 PluginConnector]: Adding new model fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 02:47:54 BoogieIcfgContainer [2022-02-10 02:47:54,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 02:47:54,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 02:47:54,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 02:47:54,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 02:47:54,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:47:54" (1/2) ... [2022-02-10 02:47:54,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4e2e79 and model type fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 02:47:54, skipping insertion in model container [2022-02-10 02:47:54,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 02:47:54" (2/2) ... [2022-02-10 02:47:54,536 INFO L111 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.bpl [2022-02-10 02:47:54,546 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 02:47:54,546 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 02:47:54,547 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 02:47:54,550 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 02:47:54,586 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 02:47:54,642 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 02:47:54,652 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 02:47:54,653 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 02:47:54,659 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 19 transitions, 54 flow [2022-02-10 02:47:54,685 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 29 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:54,789 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 407 transitions and produced 262 states. [2022-02-10 02:47:54,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 262 states, 176 states have (on average 1.6534090909090908) internal successors, (291), 261 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:54,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-10 02:47:54,806 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:54,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:54,807 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:54,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:54,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1693728149, now seen corresponding path program 1 times [2022-02-10 02:47:54,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:54,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687398562] [2022-02-10 02:47:54,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:54,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:55,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:55,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:55,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687398562] [2022-02-10 02:47:55,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687398562] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:47:55,055 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:47:55,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 02:47:55,056 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735057153] [2022-02-10 02:47:55,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:47:55,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:47:55,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:55,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:47:55,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:47:55,087 INFO L87 Difference]: Start difference. First operand has 262 states, 176 states have (on average 1.6534090909090908) internal successors, (291), 261 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:55,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:55,250 INFO L93 Difference]: Finished difference Result 260 states and 289 transitions. [2022-02-10 02:47:55,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 02:47:55,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-02-10 02:47:55,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:55,260 INFO L225 Difference]: With dead ends: 260 [2022-02-10 02:47:55,260 INFO L226 Difference]: Without dead ends: 164 [2022-02-10 02:47:55,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:47:55,265 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:55,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 26 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:47:55,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-02-10 02:47:55,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 23. [2022-02-10 02:47:55,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:55,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2022-02-10 02:47:55,298 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 13 [2022-02-10 02:47:55,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:55,298 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2022-02-10 02:47:55,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:55,299 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2022-02-10 02:47:55,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-10 02:47:55,299 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:55,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:55,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 02:47:55,300 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:55,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:55,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2055272917, now seen corresponding path program 2 times [2022-02-10 02:47:55,301 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:55,302 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35224133] [2022-02-10 02:47:55,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:55,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:55,383 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:55,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35224133] [2022-02-10 02:47:55,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35224133] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:47:55,383 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:47:55,383 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 02:47:55,384 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297624775] [2022-02-10 02:47:55,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:47:55,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:47:55,385 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:55,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:47:55,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:47:55,386 INFO L87 Difference]: Start difference. First operand 23 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:55,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:55,437 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2022-02-10 02:47:55,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 02:47:55,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-02-10 02:47:55,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:55,438 INFO L225 Difference]: With dead ends: 30 [2022-02-10 02:47:55,438 INFO L226 Difference]: Without dead ends: 25 [2022-02-10 02:47:55,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:47:55,440 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:55,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:47:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-02-10 02:47:55,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-02-10 02:47:55,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2022-02-10 02:47:55,444 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 13 [2022-02-10 02:47:55,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:55,444 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2022-02-10 02:47:55,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:55,445 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2022-02-10 02:47:55,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-10 02:47:55,445 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:55,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:55,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 02:47:55,446 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:55,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:55,446 INFO L85 PathProgramCache]: Analyzing trace with hash -140350513, now seen corresponding path program 1 times [2022-02-10 02:47:55,447 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:55,447 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337784959] [2022-02-10 02:47:55,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:55,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:55,479 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:55,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337784959] [2022-02-10 02:47:55,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337784959] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:47:55,480 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:47:55,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 02:47:55,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578582395] [2022-02-10 02:47:55,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:47:55,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:47:55,481 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:55,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:47:55,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:47:55,482 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:55,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:55,528 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2022-02-10 02:47:55,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:47:55,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-10 02:47:55,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:55,529 INFO L225 Difference]: With dead ends: 36 [2022-02-10 02:47:55,529 INFO L226 Difference]: Without dead ends: 33 [2022-02-10 02:47:55,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:47:55,531 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:55,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 31 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:47:55,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-10 02:47:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2022-02-10 02:47:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2022-02-10 02:47:55,535 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 14 [2022-02-10 02:47:55,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:55,535 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2022-02-10 02:47:55,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:55,535 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2022-02-10 02:47:55,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-10 02:47:55,536 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:55,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:55,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 02:47:55,536 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:55,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:55,537 INFO L85 PathProgramCache]: Analyzing trace with hash -239772789, now seen corresponding path program 1 times [2022-02-10 02:47:55,537 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:55,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406126394] [2022-02-10 02:47:55,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:55,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:55,570 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:55,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406126394] [2022-02-10 02:47:55,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406126394] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:55,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136726322] [2022-02-10 02:47:55,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:55,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:55,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:55,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:55,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 02:47:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:55,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 02:47:55,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:55,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:55,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136726322] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:55,785 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:55,785 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-02-10 02:47:55,785 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315131685] [2022-02-10 02:47:55,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:55,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 02:47:55,786 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:55,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 02:47:55,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-10 02:47:55,788 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:55,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:55,843 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2022-02-10 02:47:55,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 02:47:55,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-10 02:47:55,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:55,845 INFO L225 Difference]: With dead ends: 34 [2022-02-10 02:47:55,845 INFO L226 Difference]: Without dead ends: 34 [2022-02-10 02:47:55,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:47:55,848 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:55,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 37 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:47:55,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-02-10 02:47:55,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2022-02-10 02:47:55,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2022-02-10 02:47:55,863 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 14 [2022-02-10 02:47:55,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:55,864 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2022-02-10 02:47:55,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:55,864 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2022-02-10 02:47:55,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-10 02:47:55,865 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:55,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:55,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:56,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:56,088 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:56,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:56,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1158294577, now seen corresponding path program 2 times [2022-02-10 02:47:56,089 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:56,089 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911620661] [2022-02-10 02:47:56,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:56,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:56,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:56,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911620661] [2022-02-10 02:47:56,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911620661] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:47:56,126 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:47:56,126 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 02:47:56,126 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271371749] [2022-02-10 02:47:56,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:47:56,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:47:56,127 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:56,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:47:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:47:56,127 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:56,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:56,170 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2022-02-10 02:47:56,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 02:47:56,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-10 02:47:56,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:56,171 INFO L225 Difference]: With dead ends: 25 [2022-02-10 02:47:56,171 INFO L226 Difference]: Without dead ends: 25 [2022-02-10 02:47:56,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:47:56,173 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:56,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 24 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:47:56,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-02-10 02:47:56,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-02-10 02:47:56,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2022-02-10 02:47:56,179 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 14 [2022-02-10 02:47:56,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:56,179 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2022-02-10 02:47:56,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:56,180 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2022-02-10 02:47:56,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-10 02:47:56,181 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:56,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:56,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-10 02:47:56,187 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:56,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:56,188 INFO L85 PathProgramCache]: Analyzing trace with hash 559704557, now seen corresponding path program 2 times [2022-02-10 02:47:56,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:56,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717909178] [2022-02-10 02:47:56,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:56,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:56,219 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:56,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717909178] [2022-02-10 02:47:56,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717909178] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:47:56,219 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:47:56,219 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 02:47:56,219 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982134426] [2022-02-10 02:47:56,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:47:56,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:47:56,220 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:56,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:47:56,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:47:56,221 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:56,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:56,260 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2022-02-10 02:47:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 02:47:56,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-10 02:47:56,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:56,261 INFO L225 Difference]: With dead ends: 32 [2022-02-10 02:47:56,261 INFO L226 Difference]: Without dead ends: 31 [2022-02-10 02:47:56,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:47:56,262 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:56,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 16 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:47:56,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-02-10 02:47:56,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2022-02-10 02:47:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:56,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2022-02-10 02:47:56,268 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 14 [2022-02-10 02:47:56,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:56,269 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2022-02-10 02:47:56,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:56,271 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2022-02-10 02:47:56,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 02:47:56,271 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:56,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:56,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-10 02:47:56,272 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:56,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:56,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1982592687, now seen corresponding path program 1 times [2022-02-10 02:47:56,273 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:56,273 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930830809] [2022-02-10 02:47:56,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:56,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:56,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:56,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930830809] [2022-02-10 02:47:56,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930830809] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:56,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30394126] [2022-02-10 02:47:56,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:56,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:56,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:56,440 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:56,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 02:47:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:56,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 02:47:56,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:56,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:56,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30394126] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:56,867 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:56,868 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-02-10 02:47:56,868 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705000569] [2022-02-10 02:47:56,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:56,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:47:56,868 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:56,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:47:56,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:47:56,869 INFO L87 Difference]: Start difference. First operand 24 states and 33 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:56,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:56,946 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2022-02-10 02:47:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:47:56,947 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-10 02:47:56,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:56,947 INFO L225 Difference]: With dead ends: 34 [2022-02-10 02:47:56,947 INFO L226 Difference]: Without dead ends: 30 [2022-02-10 02:47:56,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:47:56,948 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:56,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 42 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:47:56,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-02-10 02:47:56,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-02-10 02:47:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:56,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2022-02-10 02:47:56,951 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 15 [2022-02-10 02:47:56,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:56,951 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2022-02-10 02:47:56,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:56,951 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2022-02-10 02:47:56,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 02:47:56,952 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:56,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:56,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:57,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-02-10 02:47:57,166 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:57,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:57,167 INFO L85 PathProgramCache]: Analyzing trace with hash 964648623, now seen corresponding path program 2 times [2022-02-10 02:47:57,167 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:57,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408886303] [2022-02-10 02:47:57,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:57,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:57,259 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:57,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408886303] [2022-02-10 02:47:57,259 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408886303] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:57,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017887439] [2022-02-10 02:47:57,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:47:57,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:57,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:57,261 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:57,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 02:47:57,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:47:57,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:57,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 02:47:57,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:57,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:57,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:57,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017887439] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:57,643 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:57,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-02-10 02:47:57,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773716535] [2022-02-10 02:47:57,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:57,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 02:47:57,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:57,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 02:47:57,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:47:57,646 INFO L87 Difference]: Start difference. First operand 28 states and 39 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:57,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:57,743 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2022-02-10 02:47:57,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:47:57,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-10 02:47:57,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:57,744 INFO L225 Difference]: With dead ends: 45 [2022-02-10 02:47:57,744 INFO L226 Difference]: Without dead ends: 41 [2022-02-10 02:47:57,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:47:57,746 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 28 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:57,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 53 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:47:57,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-02-10 02:47:57,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2022-02-10 02:47:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:57,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2022-02-10 02:47:57,756 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 15 [2022-02-10 02:47:57,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:57,757 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2022-02-10 02:47:57,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:57,757 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2022-02-10 02:47:57,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 02:47:57,759 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:57,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:57,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:57,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:57,963 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:57,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:57,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1808657003, now seen corresponding path program 3 times [2022-02-10 02:47:57,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:57,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51677724] [2022-02-10 02:47:57,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:57,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:58,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:58,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51677724] [2022-02-10 02:47:58,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51677724] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:58,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286906364] [2022-02-10 02:47:58,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:47:58,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:58,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:58,059 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:58,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 02:47:58,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:47:58,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:58,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 02:47:58,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:58,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:58,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:58,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286906364] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:58,388 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:58,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-02-10 02:47:58,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386968043] [2022-02-10 02:47:58,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:58,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 02:47:58,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:58,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 02:47:58,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:47:58,390 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:58,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:58,478 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-02-10 02:47:58,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:47:58,479 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-10 02:47:58,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:58,479 INFO L225 Difference]: With dead ends: 38 [2022-02-10 02:47:58,479 INFO L226 Difference]: Without dead ends: 33 [2022-02-10 02:47:58,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:47:58,480 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:58,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 58 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:47:58,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-10 02:47:58,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2022-02-10 02:47:58,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:58,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2022-02-10 02:47:58,483 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 15 [2022-02-10 02:47:58,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:58,483 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2022-02-10 02:47:58,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:58,483 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2022-02-10 02:47:58,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 02:47:58,484 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:58,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:58,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:58,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:58,707 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:58,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:58,707 INFO L85 PathProgramCache]: Analyzing trace with hash -87430549, now seen corresponding path program 4 times [2022-02-10 02:47:58,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:58,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655610034] [2022-02-10 02:47:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:58,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:58,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:58,785 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:58,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655610034] [2022-02-10 02:47:58,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655610034] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:58,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744235966] [2022-02-10 02:47:58,785 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:47:58,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:58,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:58,787 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:58,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 02:47:58,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:47:58,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:58,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 02:47:58,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:58,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:59,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744235966] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:59,120 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:59,120 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-02-10 02:47:59,120 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932805252] [2022-02-10 02:47:59,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:59,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 02:47:59,120 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:59,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 02:47:59,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:47:59,121 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:59,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:59,190 INFO L93 Difference]: Finished difference Result 48 states and 67 transitions. [2022-02-10 02:47:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:47:59,191 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-10 02:47:59,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:59,191 INFO L225 Difference]: With dead ends: 48 [2022-02-10 02:47:59,191 INFO L226 Difference]: Without dead ends: 44 [2022-02-10 02:47:59,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:47:59,192 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 56 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:59,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 35 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:47:59,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-02-10 02:47:59,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2022-02-10 02:47:59,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:59,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 52 transitions. [2022-02-10 02:47:59,195 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 52 transitions. Word has length 15 [2022-02-10 02:47:59,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:59,195 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 52 transitions. [2022-02-10 02:47:59,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:59,195 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 52 transitions. [2022-02-10 02:47:59,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 02:47:59,196 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:59,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:59,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:59,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-02-10 02:47:59,412 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:59,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:59,412 INFO L85 PathProgramCache]: Analyzing trace with hash 756577831, now seen corresponding path program 5 times [2022-02-10 02:47:59,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:59,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268664210] [2022-02-10 02:47:59,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:59,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:59,486 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:59,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268664210] [2022-02-10 02:47:59,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268664210] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:59,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195653608] [2022-02-10 02:47:59,486 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:47:59,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:59,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:59,488 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:59,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 02:47:59,520 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:47:59,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:59,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 02:47:59,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:59,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:59,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195653608] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:59,791 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:59,791 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-02-10 02:47:59,793 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74288307] [2022-02-10 02:47:59,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:59,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 02:47:59,793 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:59,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 02:47:59,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:47:59,794 INFO L87 Difference]: Start difference. First operand 33 states and 52 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:59,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:59,891 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2022-02-10 02:47:59,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:47:59,891 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-10 02:47:59,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:59,892 INFO L225 Difference]: With dead ends: 50 [2022-02-10 02:47:59,892 INFO L226 Difference]: Without dead ends: 45 [2022-02-10 02:47:59,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:47:59,893 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:59,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 61 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:47:59,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-02-10 02:47:59,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2022-02-10 02:47:59,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:59,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 48 transitions. [2022-02-10 02:47:59,895 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 48 transitions. Word has length 15 [2022-02-10 02:47:59,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:59,895 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 48 transitions. [2022-02-10 02:47:59,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:59,896 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 48 transitions. [2022-02-10 02:47:59,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 02:47:59,896 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:59,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:59,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-02-10 02:48:00,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:00,117 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:00,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:00,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1304281971, now seen corresponding path program 6 times [2022-02-10 02:48:00,118 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:00,118 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239621607] [2022-02-10 02:48:00,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:00,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:00,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:00,189 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:00,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239621607] [2022-02-10 02:48:00,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239621607] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:00,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547523804] [2022-02-10 02:48:00,189 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:00,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:00,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:00,191 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:00,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 02:48:00,223 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 02:48:00,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:00,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 02:48:00,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:00,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:00,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547523804] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:00,491 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:00,491 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-02-10 02:48:00,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315883632] [2022-02-10 02:48:00,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:00,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:48:00,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:00,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:48:00,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:48:00,493 INFO L87 Difference]: Start difference. First operand 32 states and 48 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:00,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:00,584 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2022-02-10 02:48:00,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:48:00,584 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-10 02:48:00,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:00,585 INFO L225 Difference]: With dead ends: 39 [2022-02-10 02:48:00,585 INFO L226 Difference]: Without dead ends: 34 [2022-02-10 02:48:00,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:48:00,586 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:00,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 50 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:48:00,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-02-10 02:48:00,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-02-10 02:48:00,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.53125) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 49 transitions. [2022-02-10 02:48:00,590 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 49 transitions. Word has length 15 [2022-02-10 02:48:00,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:00,590 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 49 transitions. [2022-02-10 02:48:00,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:00,590 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2022-02-10 02:48:00,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 02:48:00,591 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:00,591 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:00,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:00,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:00,808 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:00,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:00,808 INFO L85 PathProgramCache]: Analyzing trace with hash -2138521589, now seen corresponding path program 7 times [2022-02-10 02:48:00,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:00,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866671802] [2022-02-10 02:48:00,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:00,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:00,843 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:00,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866671802] [2022-02-10 02:48:00,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866671802] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:00,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378019748] [2022-02-10 02:48:00,844 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:48:00,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:00,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:00,845 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:00,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 02:48:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:00,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:48:00,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:00,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:00,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378019748] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:00,938 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:00,938 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-02-10 02:48:00,938 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509715185] [2022-02-10 02:48:00,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:00,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:48:00,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:00,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:48:00,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:48:00,939 INFO L87 Difference]: Start difference. First operand 33 states and 49 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:01,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:01,007 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2022-02-10 02:48:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:48:01,007 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-10 02:48:01,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:01,008 INFO L225 Difference]: With dead ends: 47 [2022-02-10 02:48:01,008 INFO L226 Difference]: Without dead ends: 43 [2022-02-10 02:48:01,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:48:01,009 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:01,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 50 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:48:01,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-02-10 02:48:01,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2022-02-10 02:48:01,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 29 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:01,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 45 transitions. [2022-02-10 02:48:01,011 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 45 transitions. Word has length 16 [2022-02-10 02:48:01,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:01,011 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 45 transitions. [2022-02-10 02:48:01,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:01,012 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 45 transitions. [2022-02-10 02:48:01,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 02:48:01,012 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:01,012 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:01,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:01,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-02-10 02:48:01,228 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:01,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:01,228 INFO L85 PathProgramCache]: Analyzing trace with hash -925644849, now seen corresponding path program 8 times [2022-02-10 02:48:01,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:01,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493852002] [2022-02-10 02:48:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:01,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:01,268 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:01,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493852002] [2022-02-10 02:48:01,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493852002] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:01,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135182318] [2022-02-10 02:48:01,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:01,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:01,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:01,269 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:01,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 02:48:01,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:01,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:01,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:48:01,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:01,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:01,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:01,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135182318] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:01,382 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:01,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-02-10 02:48:01,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290592809] [2022-02-10 02:48:01,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:01,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:48:01,382 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:01,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:48:01,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:48:01,383 INFO L87 Difference]: Start difference. First operand 30 states and 45 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:01,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:01,429 INFO L93 Difference]: Finished difference Result 46 states and 67 transitions. [2022-02-10 02:48:01,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:48:01,429 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-10 02:48:01,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:01,430 INFO L225 Difference]: With dead ends: 46 [2022-02-10 02:48:01,430 INFO L226 Difference]: Without dead ends: 46 [2022-02-10 02:48:01,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:48:01,431 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:01,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 34 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:48:01,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-02-10 02:48:01,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 32. [2022-02-10 02:48:01,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:01,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 49 transitions. [2022-02-10 02:48:01,441 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 49 transitions. Word has length 16 [2022-02-10 02:48:01,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:01,442 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 49 transitions. [2022-02-10 02:48:01,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:01,442 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 49 transitions. [2022-02-10 02:48:01,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 02:48:01,442 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:01,442 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:01,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:01,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-02-10 02:48:01,655 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:01,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:01,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1635551345, now seen corresponding path program 9 times [2022-02-10 02:48:01,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:01,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325642402] [2022-02-10 02:48:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:01,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:01,688 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:01,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325642402] [2022-02-10 02:48:01,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325642402] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:01,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515420011] [2022-02-10 02:48:01,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:48:01,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:01,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:01,690 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:01,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 02:48:01,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:48:01,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:01,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:48:01,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:01,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:01,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515420011] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:01,805 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:01,805 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 02:48:01,806 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337801172] [2022-02-10 02:48:01,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:01,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:48:01,806 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:01,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:48:01,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:48:01,807 INFO L87 Difference]: Start difference. First operand 32 states and 49 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:01,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:01,907 INFO L93 Difference]: Finished difference Result 75 states and 104 transitions. [2022-02-10 02:48:01,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:48:01,908 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-10 02:48:01,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:01,908 INFO L225 Difference]: With dead ends: 75 [2022-02-10 02:48:01,908 INFO L226 Difference]: Without dead ends: 75 [2022-02-10 02:48:01,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:48:01,911 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 76 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:01,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 48 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:01,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-02-10 02:48:01,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 35. [2022-02-10 02:48:01,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 34 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:01,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 60 transitions. [2022-02-10 02:48:01,914 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 60 transitions. Word has length 16 [2022-02-10 02:48:01,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:01,914 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 60 transitions. [2022-02-10 02:48:01,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:01,915 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 60 transitions. [2022-02-10 02:48:01,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 02:48:01,915 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:01,915 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:01,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:02,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-10 02:48:02,132 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:02,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:02,132 INFO L85 PathProgramCache]: Analyzing trace with hash 664950795, now seen corresponding path program 10 times [2022-02-10 02:48:02,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:02,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900312953] [2022-02-10 02:48:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:02,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:02,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:02,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900312953] [2022-02-10 02:48:02,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900312953] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:02,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582226928] [2022-02-10 02:48:02,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:48:02,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:02,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:02,174 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:02,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 02:48:02,203 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:48:02,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:02,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:48:02,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:02,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:02,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582226928] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:02,299 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:02,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 02:48:02,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430672486] [2022-02-10 02:48:02,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:02,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:48:02,300 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:02,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:48:02,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:48:02,300 INFO L87 Difference]: Start difference. First operand 35 states and 60 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:02,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:02,434 INFO L93 Difference]: Finished difference Result 60 states and 88 transitions. [2022-02-10 02:48:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:48:02,435 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-10 02:48:02,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:02,436 INFO L225 Difference]: With dead ends: 60 [2022-02-10 02:48:02,436 INFO L226 Difference]: Without dead ends: 58 [2022-02-10 02:48:02,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:48:02,437 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 40 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:02,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 64 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:02,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-02-10 02:48:02,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 35. [2022-02-10 02:48:02,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:02,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 55 transitions. [2022-02-10 02:48:02,439 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 55 transitions. Word has length 16 [2022-02-10 02:48:02,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:02,439 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 55 transitions. [2022-02-10 02:48:02,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:02,439 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 55 transitions. [2022-02-10 02:48:02,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 02:48:02,439 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:02,440 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:02,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:02,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-10 02:48:02,640 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:02,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:02,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1299299211, now seen corresponding path program 11 times [2022-02-10 02:48:02,641 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:02,641 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753505838] [2022-02-10 02:48:02,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:02,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:02,668 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:02,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753505838] [2022-02-10 02:48:02,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753505838] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:02,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921906341] [2022-02-10 02:48:02,668 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:48:02,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:02,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:02,670 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:02,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 02:48:02,691 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:02,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:02,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:48:02,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:02,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:02,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921906341] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:02,785 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:02,785 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 02:48:02,785 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601641919] [2022-02-10 02:48:02,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:02,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:48:02,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:02,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:48:02,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:48:02,787 INFO L87 Difference]: Start difference. First operand 35 states and 55 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:02,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:02,867 INFO L93 Difference]: Finished difference Result 78 states and 117 transitions. [2022-02-10 02:48:02,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:48:02,868 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-10 02:48:02,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:02,868 INFO L225 Difference]: With dead ends: 78 [2022-02-10 02:48:02,868 INFO L226 Difference]: Without dead ends: 78 [2022-02-10 02:48:02,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:48:02,869 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 79 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:02,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 54 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:48:02,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-02-10 02:48:02,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 40. [2022-02-10 02:48:02,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.8461538461538463) internal successors, (72), 39 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:02,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 72 transitions. [2022-02-10 02:48:02,872 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 72 transitions. Word has length 16 [2022-02-10 02:48:02,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:02,872 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 72 transitions. [2022-02-10 02:48:02,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 72 transitions. [2022-02-10 02:48:02,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 02:48:02,872 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:02,872 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:02,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:03,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-02-10 02:48:03,073 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:03,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:03,074 INFO L85 PathProgramCache]: Analyzing trace with hash 82447789, now seen corresponding path program 12 times [2022-02-10 02:48:03,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:03,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244551058] [2022-02-10 02:48:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:03,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:03,105 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:03,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244551058] [2022-02-10 02:48:03,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244551058] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:03,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451988106] [2022-02-10 02:48:03,106 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:03,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:03,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:03,107 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:03,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 02:48:03,134 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:48:03,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:03,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:48:03,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:03,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:03,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:03,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451988106] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:03,221 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:03,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 02:48:03,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704426351] [2022-02-10 02:48:03,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:03,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:48:03,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:03,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:48:03,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:48:03,222 INFO L87 Difference]: Start difference. First operand 40 states and 72 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:03,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:03,354 INFO L93 Difference]: Finished difference Result 59 states and 94 transitions. [2022-02-10 02:48:03,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:48:03,355 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-10 02:48:03,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:03,355 INFO L225 Difference]: With dead ends: 59 [2022-02-10 02:48:03,356 INFO L226 Difference]: Without dead ends: 58 [2022-02-10 02:48:03,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:48:03,356 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 48 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:03,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 52 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:03,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-02-10 02:48:03,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 41. [2022-02-10 02:48:03,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.8) internal successors, (72), 40 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:03,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 72 transitions. [2022-02-10 02:48:03,359 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 72 transitions. Word has length 16 [2022-02-10 02:48:03,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:03,359 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 72 transitions. [2022-02-10 02:48:03,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:03,359 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 72 transitions. [2022-02-10 02:48:03,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 02:48:03,359 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:03,359 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:03,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:03,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-10 02:48:03,579 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:03,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:03,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1250384049, now seen corresponding path program 13 times [2022-02-10 02:48:03,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:03,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591047086] [2022-02-10 02:48:03,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:03,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:03,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:03,612 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591047086] [2022-02-10 02:48:03,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591047086] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:03,612 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455793786] [2022-02-10 02:48:03,612 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:48:03,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:03,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:03,613 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:03,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 02:48:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:03,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:48:03,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:03,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:03,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:03,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455793786] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:03,735 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:03,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-02-10 02:48:03,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881245727] [2022-02-10 02:48:03,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:03,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:48:03,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:03,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:48:03,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:48:03,736 INFO L87 Difference]: Start difference. First operand 41 states and 72 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:03,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:03,834 INFO L93 Difference]: Finished difference Result 108 states and 173 transitions. [2022-02-10 02:48:03,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:48:03,835 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-10 02:48:03,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:03,835 INFO L225 Difference]: With dead ends: 108 [2022-02-10 02:48:03,836 INFO L226 Difference]: Without dead ends: 108 [2022-02-10 02:48:03,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:48:03,836 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 61 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:03,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 82 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:03,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-02-10 02:48:03,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 50. [2022-02-10 02:48:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 49 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:03,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 103 transitions. [2022-02-10 02:48:03,840 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 103 transitions. Word has length 16 [2022-02-10 02:48:03,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:03,840 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 103 transitions. [2022-02-10 02:48:03,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 103 transitions. [2022-02-10 02:48:03,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 02:48:03,844 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:03,844 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:03,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:04,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:04,065 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:04,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:04,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1827731825, now seen corresponding path program 14 times [2022-02-10 02:48:04,066 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:04,066 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695277116] [2022-02-10 02:48:04,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:04,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:48:04,093 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:04,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695277116] [2022-02-10 02:48:04,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695277116] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:04,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442049683] [2022-02-10 02:48:04,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:04,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:04,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:04,095 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:04,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 02:48:04,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:04,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:04,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:48:04,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:04,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:04,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:04,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:48:04,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442049683] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:04,223 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:04,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-02-10 02:48:04,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510924146] [2022-02-10 02:48:04,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:04,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:48:04,224 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:04,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:48:04,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:48:04,225 INFO L87 Difference]: Start difference. First operand 50 states and 103 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:04,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:04,360 INFO L93 Difference]: Finished difference Result 93 states and 153 transitions. [2022-02-10 02:48:04,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:48:04,360 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-10 02:48:04,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:04,361 INFO L225 Difference]: With dead ends: 93 [2022-02-10 02:48:04,361 INFO L226 Difference]: Without dead ends: 92 [2022-02-10 02:48:04,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:48:04,362 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 88 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:04,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 43 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:04,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-02-10 02:48:04,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 50. [2022-02-10 02:48:04,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.0816326530612246) internal successors, (102), 49 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:04,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 102 transitions. [2022-02-10 02:48:04,365 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 102 transitions. Word has length 16 [2022-02-10 02:48:04,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:04,365 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 102 transitions. [2022-02-10 02:48:04,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:04,365 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 102 transitions. [2022-02-10 02:48:04,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 02:48:04,366 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:04,366 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:04,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:04,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:04,567 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:04,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:04,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1929379893, now seen corresponding path program 15 times [2022-02-10 02:48:04,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:04,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024160060] [2022-02-10 02:48:04,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:04,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:04,599 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:04,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024160060] [2022-02-10 02:48:04,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024160060] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:04,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012203216] [2022-02-10 02:48:04,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:48:04,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:04,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:04,601 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:04,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 02:48:04,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 02:48:04,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:04,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:48:04,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:04,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:04,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:04,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012203216] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:04,713 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:04,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-02-10 02:48:04,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900205718] [2022-02-10 02:48:04,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:04,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:48:04,714 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:04,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:48:04,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:48:04,714 INFO L87 Difference]: Start difference. First operand 50 states and 102 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:04,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:04,859 INFO L93 Difference]: Finished difference Result 83 states and 141 transitions. [2022-02-10 02:48:04,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:48:04,859 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-10 02:48:04,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:04,860 INFO L225 Difference]: With dead ends: 83 [2022-02-10 02:48:04,860 INFO L226 Difference]: Without dead ends: 81 [2022-02-10 02:48:04,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:48:04,861 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 73 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:04,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 50 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:04,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-02-10 02:48:04,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 52. [2022-02-10 02:48:04,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.0392156862745097) internal successors, (104), 51 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:04,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 104 transitions. [2022-02-10 02:48:04,877 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 104 transitions. Word has length 16 [2022-02-10 02:48:04,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:04,877 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 104 transitions. [2022-02-10 02:48:04,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:04,878 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 104 transitions. [2022-02-10 02:48:04,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:48:04,879 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:04,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:04,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:05,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:05,096 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:05,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:05,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2099571989, now seen corresponding path program 16 times [2022-02-10 02:48:05,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:05,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970932297] [2022-02-10 02:48:05,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:05,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:05,208 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:05,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970932297] [2022-02-10 02:48:05,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970932297] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:05,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934398248] [2022-02-10 02:48:05,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:48:05,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:05,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:05,210 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:05,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 02:48:05,253 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:48:05,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:05,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:48:05,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:05,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:05,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:05,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934398248] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:05,578 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:05,578 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-02-10 02:48:05,579 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549452420] [2022-02-10 02:48:05,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:05,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:48:05,581 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:05,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:48:05,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:48:05,581 INFO L87 Difference]: Start difference. First operand 52 states and 104 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:05,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:05,773 INFO L93 Difference]: Finished difference Result 90 states and 145 transitions. [2022-02-10 02:48:05,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:48:05,773 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-10 02:48:05,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:05,774 INFO L225 Difference]: With dead ends: 90 [2022-02-10 02:48:05,774 INFO L226 Difference]: Without dead ends: 80 [2022-02-10 02:48:05,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:48:05,775 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 50 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:05,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 115 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:05,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-02-10 02:48:05,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 61. [2022-02-10 02:48:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.95) internal successors, (117), 60 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 117 transitions. [2022-02-10 02:48:05,778 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 117 transitions. Word has length 17 [2022-02-10 02:48:05,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:05,779 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 117 transitions. [2022-02-10 02:48:05,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 117 transitions. [2022-02-10 02:48:05,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:48:05,779 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:05,779 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:05,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:05,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:05,995 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:05,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:05,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1596601745, now seen corresponding path program 17 times [2022-02-10 02:48:05,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:05,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86251897] [2022-02-10 02:48:05,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:05,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:06,085 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:06,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86251897] [2022-02-10 02:48:06,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86251897] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:06,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744628892] [2022-02-10 02:48:06,085 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:48:06,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:06,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:06,087 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:06,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 02:48:06,108 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:48:06,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:06,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:48:06,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:06,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:06,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:06,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744628892] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:06,474 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:06,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-02-10 02:48:06,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454588678] [2022-02-10 02:48:06,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:06,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:48:06,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:06,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:48:06,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:48:06,475 INFO L87 Difference]: Start difference. First operand 61 states and 117 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:06,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:06,660 INFO L93 Difference]: Finished difference Result 110 states and 173 transitions. [2022-02-10 02:48:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:48:06,660 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-10 02:48:06,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:06,661 INFO L225 Difference]: With dead ends: 110 [2022-02-10 02:48:06,661 INFO L226 Difference]: Without dead ends: 106 [2022-02-10 02:48:06,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:48:06,661 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 66 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:06,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 151 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:06,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-02-10 02:48:06,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 65. [2022-02-10 02:48:06,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 2.015625) internal successors, (129), 64 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:06,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 129 transitions. [2022-02-10 02:48:06,664 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 129 transitions. Word has length 17 [2022-02-10 02:48:06,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:06,665 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 129 transitions. [2022-02-10 02:48:06,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:06,665 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 129 transitions. [2022-02-10 02:48:06,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:48:06,665 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:06,665 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:06,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:06,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:06,879 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:06,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:06,880 INFO L85 PathProgramCache]: Analyzing trace with hash -752593365, now seen corresponding path program 18 times [2022-02-10 02:48:06,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:06,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335934098] [2022-02-10 02:48:06,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:06,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:06,978 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:06,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335934098] [2022-02-10 02:48:06,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335934098] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:06,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722640662] [2022-02-10 02:48:06,978 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:06,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:06,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:06,979 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:06,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 02:48:07,007 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:48:07,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:07,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:48:07,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:07,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:07,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722640662] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:07,351 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:07,351 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-02-10 02:48:07,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510518441] [2022-02-10 02:48:07,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:07,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:48:07,352 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:07,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:48:07,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:48:07,352 INFO L87 Difference]: Start difference. First operand 65 states and 129 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:07,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:07,561 INFO L93 Difference]: Finished difference Result 101 states and 164 transitions. [2022-02-10 02:48:07,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:48:07,562 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-10 02:48:07,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:07,563 INFO L225 Difference]: With dead ends: 101 [2022-02-10 02:48:07,563 INFO L226 Difference]: Without dead ends: 90 [2022-02-10 02:48:07,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:48:07,564 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 58 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:07,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 180 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:07,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-02-10 02:48:07,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 64. [2022-02-10 02:48:07,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.0) internal successors, (126), 63 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:07,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 126 transitions. [2022-02-10 02:48:07,567 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 126 transitions. Word has length 17 [2022-02-10 02:48:07,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:07,567 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 126 transitions. [2022-02-10 02:48:07,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:07,567 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 126 transitions. [2022-02-10 02:48:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:48:07,567 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:07,567 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:07,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-02-10 02:48:07,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:07,779 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:07,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:07,780 INFO L85 PathProgramCache]: Analyzing trace with hash 703900395, now seen corresponding path program 19 times [2022-02-10 02:48:07,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:07,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268365641] [2022-02-10 02:48:07,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:07,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:07,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:07,874 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:07,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268365641] [2022-02-10 02:48:07,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268365641] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:07,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131555715] [2022-02-10 02:48:07,874 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:48:07,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:07,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:07,876 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:07,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-10 02:48:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:07,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:48:07,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:08,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:08,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:08,228 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131555715] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:08,228 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:08,228 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-02-10 02:48:08,228 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184674447] [2022-02-10 02:48:08,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:08,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:48:08,229 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:08,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:48:08,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:48:08,229 INFO L87 Difference]: Start difference. First operand 64 states and 126 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:08,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:08,412 INFO L93 Difference]: Finished difference Result 90 states and 151 transitions. [2022-02-10 02:48:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:48:08,412 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-10 02:48:08,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:08,413 INFO L225 Difference]: With dead ends: 90 [2022-02-10 02:48:08,413 INFO L226 Difference]: Without dead ends: 86 [2022-02-10 02:48:08,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:48:08,414 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:08,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 115 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:08,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-02-10 02:48:08,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 65. [2022-02-10 02:48:08,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.984375) internal successors, (127), 64 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:08,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 127 transitions. [2022-02-10 02:48:08,419 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 127 transitions. Word has length 17 [2022-02-10 02:48:08,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:08,419 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 127 transitions. [2022-02-10 02:48:08,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:08,419 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 127 transitions. [2022-02-10 02:48:08,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:48:08,420 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:08,420 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:08,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:08,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-02-10 02:48:08,631 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:08,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:08,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1997488469, now seen corresponding path program 20 times [2022-02-10 02:48:08,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:08,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993999970] [2022-02-10 02:48:08,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:08,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:08,722 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:08,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993999970] [2022-02-10 02:48:08,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993999970] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:08,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190945942] [2022-02-10 02:48:08,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:08,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:08,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:08,723 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:08,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-10 02:48:08,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:08,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:08,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:48:08,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:08,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:09,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190945942] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:09,118 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:09,118 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2022-02-10 02:48:09,118 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186606929] [2022-02-10 02:48:09,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:09,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:48:09,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:09,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:48:09,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:48:09,119 INFO L87 Difference]: Start difference. First operand 65 states and 127 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:09,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:09,238 INFO L93 Difference]: Finished difference Result 92 states and 159 transitions. [2022-02-10 02:48:09,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 02:48:09,239 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-10 02:48:09,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:09,239 INFO L225 Difference]: With dead ends: 92 [2022-02-10 02:48:09,239 INFO L226 Difference]: Without dead ends: 88 [2022-02-10 02:48:09,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:48:09,240 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 60 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:09,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 103 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:09,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-02-10 02:48:09,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 67. [2022-02-10 02:48:09,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 66 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 134 transitions. [2022-02-10 02:48:09,243 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 134 transitions. Word has length 17 [2022-02-10 02:48:09,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:09,243 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 134 transitions. [2022-02-10 02:48:09,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:09,243 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 134 transitions. [2022-02-10 02:48:09,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:48:09,244 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:09,244 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:09,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:09,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-02-10 02:48:09,451 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:09,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:09,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1153480089, now seen corresponding path program 21 times [2022-02-10 02:48:09,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:09,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718124932] [2022-02-10 02:48:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:09,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:09,552 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:09,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718124932] [2022-02-10 02:48:09,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718124932] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:09,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37251174] [2022-02-10 02:48:09,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:48:09,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:09,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:09,554 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:09,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-10 02:48:09,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:48:09,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:09,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:48:09,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:09,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:09,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:09,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37251174] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:09,962 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:09,962 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2022-02-10 02:48:09,962 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304974639] [2022-02-10 02:48:09,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:09,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:48:09,963 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:09,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:48:09,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:48:09,964 INFO L87 Difference]: Start difference. First operand 67 states and 134 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:10,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:10,102 INFO L93 Difference]: Finished difference Result 94 states and 161 transitions. [2022-02-10 02:48:10,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 02:48:10,102 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-10 02:48:10,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:10,103 INFO L225 Difference]: With dead ends: 94 [2022-02-10 02:48:10,103 INFO L226 Difference]: Without dead ends: 89 [2022-02-10 02:48:10,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:48:10,104 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 53 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:10,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 129 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:10,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-02-10 02:48:10,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2022-02-10 02:48:10,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 66 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 134 transitions. [2022-02-10 02:48:10,107 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 134 transitions. Word has length 17 [2022-02-10 02:48:10,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:10,107 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 134 transitions. [2022-02-10 02:48:10,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:10,107 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 134 transitions. [2022-02-10 02:48:10,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:48:10,107 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:10,108 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:10,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:10,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-02-10 02:48:10,308 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:10,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:10,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1080627405, now seen corresponding path program 22 times [2022-02-10 02:48:10,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:10,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182344612] [2022-02-10 02:48:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:10,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:10,392 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:10,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182344612] [2022-02-10 02:48:10,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182344612] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:10,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81539805] [2022-02-10 02:48:10,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:48:10,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:10,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:10,394 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:10,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-10 02:48:10,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:48:10,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:10,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:48:10,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:10,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:10,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81539805] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:10,720 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:10,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 14 [2022-02-10 02:48:10,720 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636562974] [2022-02-10 02:48:10,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:10,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:48:10,720 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:10,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:48:10,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:48:10,721 INFO L87 Difference]: Start difference. First operand 67 states and 134 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:10,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:10,842 INFO L93 Difference]: Finished difference Result 84 states and 151 transitions. [2022-02-10 02:48:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 02:48:10,843 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-10 02:48:10,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:10,843 INFO L225 Difference]: With dead ends: 84 [2022-02-10 02:48:10,844 INFO L226 Difference]: Without dead ends: 79 [2022-02-10 02:48:10,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:48:10,844 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:10,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 102 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:10,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-02-10 02:48:10,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2022-02-10 02:48:10,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 66 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:10,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 134 transitions. [2022-02-10 02:48:10,847 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 134 transitions. Word has length 17 [2022-02-10 02:48:10,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:10,847 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 134 transitions. [2022-02-10 02:48:10,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:10,847 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 134 transitions. [2022-02-10 02:48:10,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:48:10,847 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:10,847 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:10,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:11,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:11,055 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:11,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:11,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1540075025, now seen corresponding path program 23 times [2022-02-10 02:48:11,056 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:11,056 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191045608] [2022-02-10 02:48:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:11,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:11,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:11,147 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:11,147 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191045608] [2022-02-10 02:48:11,147 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191045608] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:11,147 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296373403] [2022-02-10 02:48:11,147 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:48:11,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:11,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:11,148 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:11,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-10 02:48:11,170 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:48:11,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:11,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:48:11,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:11,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:11,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:11,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296373403] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:11,481 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:11,481 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-02-10 02:48:11,481 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419760815] [2022-02-10 02:48:11,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:11,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:48:11,481 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:11,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:48:11,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:48:11,482 INFO L87 Difference]: Start difference. First operand 67 states and 134 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:11,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:11,699 INFO L93 Difference]: Finished difference Result 134 states and 223 transitions. [2022-02-10 02:48:11,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:48:11,700 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-10 02:48:11,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:11,700 INFO L225 Difference]: With dead ends: 134 [2022-02-10 02:48:11,700 INFO L226 Difference]: Without dead ends: 126 [2022-02-10 02:48:11,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:48:11,701 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 95 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:11,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 161 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:11,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-02-10 02:48:11,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 75. [2022-02-10 02:48:11,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 2.2027027027027026) internal successors, (163), 74 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 163 transitions. [2022-02-10 02:48:11,705 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 163 transitions. Word has length 17 [2022-02-10 02:48:11,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:11,705 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 163 transitions. [2022-02-10 02:48:11,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:11,705 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 163 transitions. [2022-02-10 02:48:11,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:48:11,705 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:11,705 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:11,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-02-10 02:48:11,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-10 02:48:11,915 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:11,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:11,916 INFO L85 PathProgramCache]: Analyzing trace with hash -696066645, now seen corresponding path program 24 times [2022-02-10 02:48:11,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:11,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131360448] [2022-02-10 02:48:11,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:11,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:12,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:12,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:12,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131360448] [2022-02-10 02:48:12,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131360448] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:12,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973955481] [2022-02-10 02:48:12,001 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:12,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:12,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:12,002 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:12,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-10 02:48:12,023 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:48:12,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:12,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:48:12,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:12,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:12,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:12,344 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973955481] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:12,344 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:12,344 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-02-10 02:48:12,344 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041953023] [2022-02-10 02:48:12,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:12,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:48:12,345 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:12,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:48:12,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:48:12,345 INFO L87 Difference]: Start difference. First operand 75 states and 163 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:12,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:12,532 INFO L93 Difference]: Finished difference Result 138 states and 226 transitions. [2022-02-10 02:48:12,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:48:12,532 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-10 02:48:12,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:12,533 INFO L225 Difference]: With dead ends: 138 [2022-02-10 02:48:12,533 INFO L226 Difference]: Without dead ends: 127 [2022-02-10 02:48:12,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:48:12,533 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 82 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:12,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 210 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:12,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-02-10 02:48:12,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 73. [2022-02-10 02:48:12,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 2.138888888888889) internal successors, (154), 72 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:12,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 154 transitions. [2022-02-10 02:48:12,536 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 154 transitions. Word has length 17 [2022-02-10 02:48:12,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:12,536 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 154 transitions. [2022-02-10 02:48:12,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:12,536 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 154 transitions. [2022-02-10 02:48:12,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:48:12,537 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:12,537 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:12,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:12,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:12,758 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:12,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:12,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1538040849, now seen corresponding path program 25 times [2022-02-10 02:48:12,759 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:12,759 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516278842] [2022-02-10 02:48:12,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:12,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:12,842 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:12,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516278842] [2022-02-10 02:48:12,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516278842] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:12,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017962162] [2022-02-10 02:48:12,842 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:48:12,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:12,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:12,843 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:12,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-10 02:48:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:12,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:48:12,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:12,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:13,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017962162] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:13,153 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:13,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-02-10 02:48:13,154 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399647228] [2022-02-10 02:48:13,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:13,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:48:13,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:13,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:48:13,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:48:13,155 INFO L87 Difference]: Start difference. First operand 73 states and 154 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:13,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:13,339 INFO L93 Difference]: Finished difference Result 127 states and 209 transitions. [2022-02-10 02:48:13,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:48:13,340 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-10 02:48:13,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:13,340 INFO L225 Difference]: With dead ends: 127 [2022-02-10 02:48:13,341 INFO L226 Difference]: Without dead ends: 115 [2022-02-10 02:48:13,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:48:13,341 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 76 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:13,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 135 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:13,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-02-10 02:48:13,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 72. [2022-02-10 02:48:13,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 71 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:13,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 151 transitions. [2022-02-10 02:48:13,344 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 151 transitions. Word has length 17 [2022-02-10 02:48:13,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:13,345 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 151 transitions. [2022-02-10 02:48:13,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:13,345 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 151 transitions. [2022-02-10 02:48:13,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:48:13,345 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:13,345 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:13,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:13,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-02-10 02:48:13,567 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:13,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:13,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2075896427, now seen corresponding path program 26 times [2022-02-10 02:48:13,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:13,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824293816] [2022-02-10 02:48:13,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:13,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:13,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:13,660 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:13,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824293816] [2022-02-10 02:48:13,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824293816] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:13,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975120271] [2022-02-10 02:48:13,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:13,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:13,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:13,663 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:13,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-10 02:48:13,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:13,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:13,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:48:13,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:13,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:13,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975120271] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:13,979 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:13,979 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-02-10 02:48:13,979 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033992992] [2022-02-10 02:48:13,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:13,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:48:13,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:13,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:48:13,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:48:13,980 INFO L87 Difference]: Start difference. First operand 72 states and 151 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:14,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:14,130 INFO L93 Difference]: Finished difference Result 109 states and 188 transitions. [2022-02-10 02:48:14,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:48:14,131 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-10 02:48:14,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:14,131 INFO L225 Difference]: With dead ends: 109 [2022-02-10 02:48:14,131 INFO L226 Difference]: Without dead ends: 104 [2022-02-10 02:48:14,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:48:14,135 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 47 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:14,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 160 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:14,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-02-10 02:48:14,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 74. [2022-02-10 02:48:14,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.095890410958904) internal successors, (153), 73 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:14,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 153 transitions. [2022-02-10 02:48:14,138 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 153 transitions. Word has length 17 [2022-02-10 02:48:14,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:14,138 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 153 transitions. [2022-02-10 02:48:14,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:14,139 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 153 transitions. [2022-02-10 02:48:14,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:48:14,139 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:14,139 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:14,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:14,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:14,343 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:14,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:14,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1582087441, now seen corresponding path program 27 times [2022-02-10 02:48:14,344 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:14,344 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358437479] [2022-02-10 02:48:14,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:14,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:14,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:14,423 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:14,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358437479] [2022-02-10 02:48:14,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358437479] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:14,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211834235] [2022-02-10 02:48:14,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:48:14,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:14,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:14,424 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:14,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-10 02:48:14,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:48:14,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:14,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:48:14,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:14,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:14,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:14,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:14,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211834235] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:14,734 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:14,734 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2022-02-10 02:48:14,734 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052171623] [2022-02-10 02:48:14,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:14,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:48:14,734 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:14,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:48:14,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:48:14,735 INFO L87 Difference]: Start difference. First operand 74 states and 153 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:14,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:14,897 INFO L93 Difference]: Finished difference Result 116 states and 204 transitions. [2022-02-10 02:48:14,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 02:48:14,897 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-10 02:48:14,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:14,898 INFO L225 Difference]: With dead ends: 116 [2022-02-10 02:48:14,898 INFO L226 Difference]: Without dead ends: 110 [2022-02-10 02:48:14,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:48:14,898 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 72 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:14,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 129 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-02-10 02:48:14,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 77. [2022-02-10 02:48:14,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 2.1447368421052633) internal successors, (163), 76 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:14,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 163 transitions. [2022-02-10 02:48:14,902 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 163 transitions. Word has length 17 [2022-02-10 02:48:14,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:14,902 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 163 transitions. [2022-02-10 02:48:14,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:14,902 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 163 transitions. [2022-02-10 02:48:14,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:48:14,902 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:14,902 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:14,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:15,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:15,103 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:15,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:15,103 INFO L85 PathProgramCache]: Analyzing trace with hash -738079061, now seen corresponding path program 28 times [2022-02-10 02:48:15,103 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:15,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650232849] [2022-02-10 02:48:15,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:15,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:15,181 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:15,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650232849] [2022-02-10 02:48:15,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650232849] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:15,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366496386] [2022-02-10 02:48:15,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:48:15,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:15,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:15,182 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:15,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-10 02:48:15,203 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:48:15,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:15,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:48:15,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:15,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:15,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:15,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366496386] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:15,487 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:15,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2022-02-10 02:48:15,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856060022] [2022-02-10 02:48:15,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:15,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:48:15,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:15,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:48:15,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:48:15,488 INFO L87 Difference]: Start difference. First operand 77 states and 163 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:15,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:15,604 INFO L93 Difference]: Finished difference Result 108 states and 195 transitions. [2022-02-10 02:48:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 02:48:15,604 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-10 02:48:15,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:15,605 INFO L225 Difference]: With dead ends: 108 [2022-02-10 02:48:15,605 INFO L226 Difference]: Without dead ends: 103 [2022-02-10 02:48:15,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:48:15,606 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 76 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:15,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 107 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:15,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-02-10 02:48:15,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 78. [2022-02-10 02:48:15,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.1298701298701297) internal successors, (164), 77 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:15,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 164 transitions. [2022-02-10 02:48:15,609 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 164 transitions. Word has length 17 [2022-02-10 02:48:15,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:15,609 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 164 transitions. [2022-02-10 02:48:15,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:15,609 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 164 transitions. [2022-02-10 02:48:15,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:48:15,609 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:15,609 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:15,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-02-10 02:48:15,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:15,827 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:15,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:15,828 INFO L85 PathProgramCache]: Analyzing trace with hash 718414699, now seen corresponding path program 29 times [2022-02-10 02:48:15,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:15,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073960430] [2022-02-10 02:48:15,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:15,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:15,909 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:15,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073960430] [2022-02-10 02:48:15,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073960430] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:15,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548702198] [2022-02-10 02:48:15,910 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:48:15,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:15,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:15,911 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:15,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-10 02:48:15,944 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:48:15,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:15,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:48:15,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:16,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:16,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:16,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548702198] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:16,247 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:16,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 14 [2022-02-10 02:48:16,247 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992191457] [2022-02-10 02:48:16,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:16,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:48:16,248 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:16,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:48:16,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:48:16,248 INFO L87 Difference]: Start difference. First operand 78 states and 164 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:16,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:16,385 INFO L93 Difference]: Finished difference Result 98 states and 184 transitions. [2022-02-10 02:48:16,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 02:48:16,385 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-10 02:48:16,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:16,386 INFO L225 Difference]: With dead ends: 98 [2022-02-10 02:48:16,386 INFO L226 Difference]: Without dead ends: 94 [2022-02-10 02:48:16,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:48:16,386 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 26 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:16,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 116 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:16,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-02-10 02:48:16,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 78. [2022-02-10 02:48:16,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.1298701298701297) internal successors, (164), 77 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:16,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 164 transitions. [2022-02-10 02:48:16,389 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 164 transitions. Word has length 17 [2022-02-10 02:48:16,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:16,389 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 164 transitions. [2022-02-10 02:48:16,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:16,390 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 164 transitions. [2022-02-10 02:48:16,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:48:16,390 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:16,390 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:16,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-02-10 02:48:16,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-02-10 02:48:16,591 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:16,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:16,591 INFO L85 PathProgramCache]: Analyzing trace with hash 163392335, now seen corresponding path program 30 times [2022-02-10 02:48:16,591 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:16,591 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428816324] [2022-02-10 02:48:16,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:16,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:16,633 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:16,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428816324] [2022-02-10 02:48:16,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428816324] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:16,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489458636] [2022-02-10 02:48:16,634 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:16,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:16,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:16,635 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:16,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-10 02:48:16,657 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:48:16,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:16,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:48:16,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:16,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:16,745 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:16,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489458636] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:16,746 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:16,746 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-10 02:48:16,746 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846679448] [2022-02-10 02:48:16,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:16,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 02:48:16,746 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:16,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 02:48:16,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:48:16,747 INFO L87 Difference]: Start difference. First operand 78 states and 164 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:16,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:16,840 INFO L93 Difference]: Finished difference Result 123 states and 249 transitions. [2022-02-10 02:48:16,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:48:16,840 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:48:16,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:16,841 INFO L225 Difference]: With dead ends: 123 [2022-02-10 02:48:16,841 INFO L226 Difference]: Without dead ends: 118 [2022-02-10 02:48:16,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:48:16,842 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 40 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:16,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 67 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:16,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-02-10 02:48:16,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 75. [2022-02-10 02:48:16,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 2.1621621621621623) internal successors, (160), 74 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 160 transitions. [2022-02-10 02:48:16,855 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 160 transitions. Word has length 18 [2022-02-10 02:48:16,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:16,856 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 160 transitions. [2022-02-10 02:48:16,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:16,856 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 160 transitions. [2022-02-10 02:48:16,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:48:16,856 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:16,856 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:16,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:17,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-02-10 02:48:17,071 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:17,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:17,072 INFO L85 PathProgramCache]: Analyzing trace with hash -892134389, now seen corresponding path program 31 times [2022-02-10 02:48:17,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:17,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109262494] [2022-02-10 02:48:17,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:17,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:17,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:17,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109262494] [2022-02-10 02:48:17,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109262494] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:17,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687981909] [2022-02-10 02:48:17,123 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:48:17,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:17,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:17,125 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:17,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-10 02:48:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:17,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:48:17,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:17,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:17,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:17,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687981909] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:17,249 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:17,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-10 02:48:17,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825052081] [2022-02-10 02:48:17,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:17,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 02:48:17,250 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:17,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 02:48:17,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:48:17,251 INFO L87 Difference]: Start difference. First operand 75 states and 160 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:17,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:17,330 INFO L93 Difference]: Finished difference Result 129 states and 263 transitions. [2022-02-10 02:48:17,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 02:48:17,330 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:48:17,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:17,331 INFO L225 Difference]: With dead ends: 129 [2022-02-10 02:48:17,331 INFO L226 Difference]: Without dead ends: 129 [2022-02-10 02:48:17,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:48:17,332 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 47 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:17,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 56 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:17,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-02-10 02:48:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 79. [2022-02-10 02:48:17,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 2.1794871794871793) internal successors, (170), 78 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:17,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 170 transitions. [2022-02-10 02:48:17,334 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 170 transitions. Word has length 18 [2022-02-10 02:48:17,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:17,334 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 170 transitions. [2022-02-10 02:48:17,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:17,335 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 170 transitions. [2022-02-10 02:48:17,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:48:17,336 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:17,336 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:17,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:17,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:17,543 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:17,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:17,544 INFO L85 PathProgramCache]: Analyzing trace with hash 570065871, now seen corresponding path program 32 times [2022-02-10 02:48:17,544 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:17,544 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350617462] [2022-02-10 02:48:17,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:17,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:17,580 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:17,580 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:17,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350617462] [2022-02-10 02:48:17,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350617462] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:17,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548999118] [2022-02-10 02:48:17,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:17,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:17,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:17,582 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:17,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-10 02:48:17,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:17,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:17,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:48:17,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:17,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:17,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548999118] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:17,708 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:17,708 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 02:48:17,708 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204253353] [2022-02-10 02:48:17,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:17,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:48:17,708 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:17,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:48:17,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:48:17,709 INFO L87 Difference]: Start difference. First operand 79 states and 170 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:17,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:17,897 INFO L93 Difference]: Finished difference Result 193 states and 365 transitions. [2022-02-10 02:48:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 02:48:17,897 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:48:17,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:17,898 INFO L225 Difference]: With dead ends: 193 [2022-02-10 02:48:17,898 INFO L226 Difference]: Without dead ends: 192 [2022-02-10 02:48:17,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:48:17,899 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 87 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:17,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 79 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:17,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-02-10 02:48:17,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 103. [2022-02-10 02:48:17,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 2.4705882352941178) internal successors, (252), 102 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:17,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 252 transitions. [2022-02-10 02:48:17,903 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 252 transitions. Word has length 18 [2022-02-10 02:48:17,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:17,903 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 252 transitions. [2022-02-10 02:48:17,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:17,903 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 252 transitions. [2022-02-10 02:48:17,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:48:17,904 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:17,904 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:17,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:18,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-02-10 02:48:18,127 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:18,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:18,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1424399285, now seen corresponding path program 33 times [2022-02-10 02:48:18,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:18,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942633191] [2022-02-10 02:48:18,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:18,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:18,164 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:18,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:18,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942633191] [2022-02-10 02:48:18,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942633191] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:18,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004831024] [2022-02-10 02:48:18,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:48:18,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:18,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:18,166 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:18,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-10 02:48:18,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:48:18,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:18,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:48:18,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:18,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:18,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:18,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004831024] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:18,290 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:18,290 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 02:48:18,290 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371289205] [2022-02-10 02:48:18,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:18,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:48:18,290 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:18,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:48:18,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:48:18,291 INFO L87 Difference]: Start difference. First operand 103 states and 252 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:18,483 INFO L93 Difference]: Finished difference Result 179 states and 346 transitions. [2022-02-10 02:48:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 02:48:18,483 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:48:18,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:18,484 INFO L225 Difference]: With dead ends: 179 [2022-02-10 02:48:18,484 INFO L226 Difference]: Without dead ends: 175 [2022-02-10 02:48:18,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=197, Invalid=453, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:48:18,485 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 72 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:18,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 88 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:18,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-02-10 02:48:18,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 89. [2022-02-10 02:48:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.284090909090909) internal successors, (201), 88 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:18,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 201 transitions. [2022-02-10 02:48:18,488 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 201 transitions. Word has length 18 [2022-02-10 02:48:18,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:18,489 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 201 transitions. [2022-02-10 02:48:18,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:18,489 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 201 transitions. [2022-02-10 02:48:18,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:48:18,489 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:18,489 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:18,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:18,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-10 02:48:18,703 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:18,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:18,704 INFO L85 PathProgramCache]: Analyzing trace with hash -790050869, now seen corresponding path program 34 times [2022-02-10 02:48:18,704 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:18,704 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743789506] [2022-02-10 02:48:18,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:18,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:18,748 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:18,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743789506] [2022-02-10 02:48:18,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743789506] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:18,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813136486] [2022-02-10 02:48:18,749 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:48:18,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:18,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:18,750 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:18,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-10 02:48:18,776 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:48:18,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:18,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:48:18,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:18,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:18,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813136486] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:18,870 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:18,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 02:48:18,871 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292902113] [2022-02-10 02:48:18,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:18,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:48:18,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:18,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:48:18,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:48:18,872 INFO L87 Difference]: Start difference. First operand 89 states and 201 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:19,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:19,043 INFO L93 Difference]: Finished difference Result 194 states and 354 transitions. [2022-02-10 02:48:19,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:48:19,044 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:48:19,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:19,045 INFO L225 Difference]: With dead ends: 194 [2022-02-10 02:48:19,045 INFO L226 Difference]: Without dead ends: 194 [2022-02-10 02:48:19,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=182, Invalid=324, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:48:19,045 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 121 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:19,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 87 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:19,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-02-10 02:48:19,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 100. [2022-02-10 02:48:19,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.404040404040404) internal successors, (238), 99 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:19,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 238 transitions. [2022-02-10 02:48:19,051 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 238 transitions. Word has length 18 [2022-02-10 02:48:19,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:19,051 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 238 transitions. [2022-02-10 02:48:19,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:19,051 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 238 transitions. [2022-02-10 02:48:19,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:48:19,052 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:19,052 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:19,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:19,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-10 02:48:19,276 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:19,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:19,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2006902291, now seen corresponding path program 35 times [2022-02-10 02:48:19,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:19,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097444253] [2022-02-10 02:48:19,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:19,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:19,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:19,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097444253] [2022-02-10 02:48:19,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097444253] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:19,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202135847] [2022-02-10 02:48:19,312 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:48:19,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:19,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:19,313 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:19,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-10 02:48:19,335 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:48:19,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:19,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:48:19,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:19,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:19,423 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:19,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202135847] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:19,423 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:19,424 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 02:48:19,424 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267811097] [2022-02-10 02:48:19,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:19,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:48:19,424 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:19,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:48:19,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:48:19,424 INFO L87 Difference]: Start difference. First operand 100 states and 238 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:19,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:19,629 INFO L93 Difference]: Finished difference Result 151 states and 301 transitions. [2022-02-10 02:48:19,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 02:48:19,629 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:48:19,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:19,630 INFO L225 Difference]: With dead ends: 151 [2022-02-10 02:48:19,630 INFO L226 Difference]: Without dead ends: 149 [2022-02-10 02:48:19,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=367, Invalid=689, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:48:19,631 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 77 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:19,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 70 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:19,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-02-10 02:48:19,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 94. [2022-02-10 02:48:19,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.3333333333333335) internal successors, (217), 93 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 217 transitions. [2022-02-10 02:48:19,634 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 217 transitions. Word has length 18 [2022-02-10 02:48:19,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:19,634 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 217 transitions. [2022-02-10 02:48:19,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:19,634 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 217 transitions. [2022-02-10 02:48:19,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:48:19,635 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:19,635 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:19,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:19,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:19,851 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:19,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:19,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1171690319, now seen corresponding path program 36 times [2022-02-10 02:48:19,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:19,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462631883] [2022-02-10 02:48:19,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:19,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:19,893 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:19,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462631883] [2022-02-10 02:48:19,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462631883] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:19,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283681101] [2022-02-10 02:48:19,894 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:19,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:19,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:19,895 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:19,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-10 02:48:19,916 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 02:48:19,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:19,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:48:19,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:19,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:20,003 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:20,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283681101] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:20,003 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:20,003 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 02:48:20,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24340686] [2022-02-10 02:48:20,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:20,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:48:20,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:20,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:48:20,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:48:20,004 INFO L87 Difference]: Start difference. First operand 94 states and 217 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:20,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:20,168 INFO L93 Difference]: Finished difference Result 169 states and 345 transitions. [2022-02-10 02:48:20,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 02:48:20,168 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:48:20,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:20,169 INFO L225 Difference]: With dead ends: 169 [2022-02-10 02:48:20,169 INFO L226 Difference]: Without dead ends: 165 [2022-02-10 02:48:20,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:48:20,170 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 73 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:20,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 63 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:20,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-02-10 02:48:20,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 108. [2022-02-10 02:48:20,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.364485981308411) internal successors, (253), 107 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:20,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 253 transitions. [2022-02-10 02:48:20,174 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 253 transitions. Word has length 18 [2022-02-10 02:48:20,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:20,174 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 253 transitions. [2022-02-10 02:48:20,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:20,174 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 253 transitions. [2022-02-10 02:48:20,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:48:20,175 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:20,175 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:20,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:20,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:20,379 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:20,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:20,380 INFO L85 PathProgramCache]: Analyzing trace with hash -332637425, now seen corresponding path program 37 times [2022-02-10 02:48:20,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:20,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989589126] [2022-02-10 02:48:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:20,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:20,415 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:20,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989589126] [2022-02-10 02:48:20,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989589126] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:20,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538549247] [2022-02-10 02:48:20,415 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:48:20,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:20,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:20,417 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:20,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-10 02:48:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:20,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:48:20,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:20,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:20,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:20,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538549247] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:20,545 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:20,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2022-02-10 02:48:20,545 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826274624] [2022-02-10 02:48:20,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:20,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:48:20,546 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:20,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:48:20,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:48:20,546 INFO L87 Difference]: Start difference. First operand 108 states and 253 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:20,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:20,676 INFO L93 Difference]: Finished difference Result 219 states and 422 transitions. [2022-02-10 02:48:20,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:48:20,676 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:48:20,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:20,677 INFO L225 Difference]: With dead ends: 219 [2022-02-10 02:48:20,677 INFO L226 Difference]: Without dead ends: 217 [2022-02-10 02:48:20,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=166, Invalid=296, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:48:20,678 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 83 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:20,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 79 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:20,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-02-10 02:48:20,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 119. [2022-02-10 02:48:20,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 2.406779661016949) internal successors, (284), 118 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:20,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 284 transitions. [2022-02-10 02:48:20,682 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 284 transitions. Word has length 18 [2022-02-10 02:48:20,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:20,682 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 284 transitions. [2022-02-10 02:48:20,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:20,682 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 284 transitions. [2022-02-10 02:48:20,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:48:20,683 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:20,683 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:20,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-02-10 02:48:20,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-02-10 02:48:20,905 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:20,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:20,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1549488847, now seen corresponding path program 38 times [2022-02-10 02:48:20,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:20,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078033711] [2022-02-10 02:48:20,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:20,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:48:20,940 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:20,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078033711] [2022-02-10 02:48:20,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078033711] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:20,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821936063] [2022-02-10 02:48:20,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:20,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:20,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:20,941 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:20,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-10 02:48:20,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:20,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:20,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:48:20,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:21,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:21,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:48:21,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821936063] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:21,057 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:21,057 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2022-02-10 02:48:21,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919050604] [2022-02-10 02:48:21,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:21,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:48:21,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:21,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:48:21,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:48:21,058 INFO L87 Difference]: Start difference. First operand 119 states and 284 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:21,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:21,303 INFO L93 Difference]: Finished difference Result 202 states and 387 transitions. [2022-02-10 02:48:21,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 02:48:21,304 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:48:21,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:21,305 INFO L225 Difference]: With dead ends: 202 [2022-02-10 02:48:21,305 INFO L226 Difference]: Without dead ends: 199 [2022-02-10 02:48:21,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=331, Invalid=661, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:48:21,305 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 82 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:21,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 70 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:21,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-02-10 02:48:21,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 109. [2022-02-10 02:48:21,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 2.324074074074074) internal successors, (251), 108 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:21,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 251 transitions. [2022-02-10 02:48:21,309 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 251 transitions. Word has length 18 [2022-02-10 02:48:21,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:21,309 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 251 transitions. [2022-02-10 02:48:21,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:21,309 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 251 transitions. [2022-02-10 02:48:21,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:48:21,310 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:21,310 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:21,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:21,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-02-10 02:48:21,520 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:21,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:21,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1011633269, now seen corresponding path program 39 times [2022-02-10 02:48:21,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:21,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182538792] [2022-02-10 02:48:21,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:21,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:21,564 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:21,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182538792] [2022-02-10 02:48:21,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182538792] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:21,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642484667] [2022-02-10 02:48:21,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:48:21,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:21,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:21,566 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:21,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-10 02:48:21,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:48:21,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:21,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:48:21,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:21,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:21,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:21,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642484667] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:21,684 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:21,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-10 02:48:21,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520360377] [2022-02-10 02:48:21,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:21,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:48:21,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:21,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:48:21,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:48:21,685 INFO L87 Difference]: Start difference. First operand 109 states and 251 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:21,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:21,934 INFO L93 Difference]: Finished difference Result 173 states and 337 transitions. [2022-02-10 02:48:21,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 02:48:21,935 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:48:21,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:21,936 INFO L225 Difference]: With dead ends: 173 [2022-02-10 02:48:21,936 INFO L226 Difference]: Without dead ends: 169 [2022-02-10 02:48:21,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=373, Invalid=817, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:48:21,936 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 75 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:21,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 60 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:21,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-02-10 02:48:21,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 111. [2022-02-10 02:48:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 2.290909090909091) internal successors, (252), 110 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:21,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 252 transitions. [2022-02-10 02:48:21,940 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 252 transitions. Word has length 18 [2022-02-10 02:48:21,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:21,940 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 252 transitions. [2022-02-10 02:48:21,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:21,940 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 252 transitions. [2022-02-10 02:48:21,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:48:21,940 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:21,941 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:21,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:22,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-02-10 02:48:22,152 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:22,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:22,152 INFO L85 PathProgramCache]: Analyzing trace with hash 962277451, now seen corresponding path program 40 times [2022-02-10 02:48:22,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:22,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108749344] [2022-02-10 02:48:22,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:22,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:22,186 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:22,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108749344] [2022-02-10 02:48:22,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108749344] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:22,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107984767] [2022-02-10 02:48:22,187 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:48:22,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:22,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:22,188 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:22,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-10 02:48:22,223 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:48:22,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:22,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:48:22,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:22,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:22,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107984767] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:22,325 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:22,325 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 13 [2022-02-10 02:48:22,325 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756437661] [2022-02-10 02:48:22,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:22,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:48:22,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:22,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:48:22,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:48:22,326 INFO L87 Difference]: Start difference. First operand 111 states and 252 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:22,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:22,482 INFO L93 Difference]: Finished difference Result 271 states and 543 transitions. [2022-02-10 02:48:22,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:48:22,482 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:48:22,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:22,483 INFO L225 Difference]: With dead ends: 271 [2022-02-10 02:48:22,483 INFO L226 Difference]: Without dead ends: 271 [2022-02-10 02:48:22,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:48:22,483 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 70 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:22,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 136 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:22,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-02-10 02:48:22,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 144. [2022-02-10 02:48:22,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.5384615384615383) internal successors, (363), 143 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 363 transitions. [2022-02-10 02:48:22,488 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 363 transitions. Word has length 18 [2022-02-10 02:48:22,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:22,488 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 363 transitions. [2022-02-10 02:48:22,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:22,488 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 363 transitions. [2022-02-10 02:48:22,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:48:22,489 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:22,489 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:22,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-02-10 02:48:22,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-02-10 02:48:22,703 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:22,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:22,704 INFO L85 PathProgramCache]: Analyzing trace with hash -254573971, now seen corresponding path program 41 times [2022-02-10 02:48:22,704 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:22,704 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027475197] [2022-02-10 02:48:22,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:22,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:22,732 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:48:22,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:22,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027475197] [2022-02-10 02:48:22,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027475197] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:22,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446645867] [2022-02-10 02:48:22,732 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:48:22,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:22,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:22,734 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:22,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-10 02:48:22,756 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:48:22,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:22,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:48:22,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:22,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:48:22,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446645867] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:22,863 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:22,863 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 13 [2022-02-10 02:48:22,863 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698009595] [2022-02-10 02:48:22,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:22,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:48:22,863 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:22,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:48:22,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:48:22,864 INFO L87 Difference]: Start difference. First operand 144 states and 363 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:23,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:23,108 INFO L93 Difference]: Finished difference Result 246 states and 499 transitions. [2022-02-10 02:48:23,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 02:48:23,108 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:48:23,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:23,109 INFO L225 Difference]: With dead ends: 246 [2022-02-10 02:48:23,109 INFO L226 Difference]: Without dead ends: 244 [2022-02-10 02:48:23,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=348, Invalid=708, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:48:23,109 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 91 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:23,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 74 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:23,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-02-10 02:48:23,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 142. [2022-02-10 02:48:23,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 2.5106382978723403) internal successors, (354), 141 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:23,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2022-02-10 02:48:23,114 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 18 [2022-02-10 02:48:23,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:23,114 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2022-02-10 02:48:23,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:23,114 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2022-02-10 02:48:23,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:48:23,115 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:23,115 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:23,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:23,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:23,335 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:23,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:23,336 INFO L85 PathProgramCache]: Analyzing trace with hash 283281607, now seen corresponding path program 42 times [2022-02-10 02:48:23,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:23,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151802649] [2022-02-10 02:48:23,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:23,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:48:23,372 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:23,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151802649] [2022-02-10 02:48:23,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151802649] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:23,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617763338] [2022-02-10 02:48:23,372 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:23,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:23,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:23,374 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:23,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-10 02:48:23,398 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 02:48:23,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:23,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:48:23,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:23,468 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:23,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:23,495 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:48:23,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617763338] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:23,495 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:23,495 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2022-02-10 02:48:23,495 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589319551] [2022-02-10 02:48:23,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:23,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:48:23,496 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:23,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:48:23,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:48:23,496 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:23,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:23,717 INFO L93 Difference]: Finished difference Result 254 states and 525 transitions. [2022-02-10 02:48:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 02:48:23,718 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:48:23,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:23,719 INFO L225 Difference]: With dead ends: 254 [2022-02-10 02:48:23,719 INFO L226 Difference]: Without dead ends: 250 [2022-02-10 02:48:23,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=341, Invalid=781, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:48:23,720 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 110 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:23,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 71 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:23,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-02-10 02:48:23,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 150. [2022-02-10 02:48:23,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.563758389261745) internal successors, (382), 149 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 382 transitions. [2022-02-10 02:48:23,725 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 382 transitions. Word has length 18 [2022-02-10 02:48:23,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:23,725 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 382 transitions. [2022-02-10 02:48:23,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 382 transitions. [2022-02-10 02:48:23,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:48:23,726 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:23,726 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:23,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:23,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-02-10 02:48:23,949 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:23,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:23,949 INFO L85 PathProgramCache]: Analyzing trace with hash -223064659, now seen corresponding path program 43 times [2022-02-10 02:48:23,949 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:23,950 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977967030] [2022-02-10 02:48:23,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:23,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:23,991 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:23,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977967030] [2022-02-10 02:48:23,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977967030] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:23,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211880360] [2022-02-10 02:48:23,991 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:48:23,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:23,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:23,993 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:23,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-10 02:48:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:24,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:48:24,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:24,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:24,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211880360] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:24,114 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:24,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-02-10 02:48:24,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426675994] [2022-02-10 02:48:24,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:24,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:48:24,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:24,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:48:24,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:48:24,115 INFO L87 Difference]: Start difference. First operand 150 states and 382 transitions. Second operand has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:24,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:24,326 INFO L93 Difference]: Finished difference Result 237 states and 504 transitions. [2022-02-10 02:48:24,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 02:48:24,327 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:48:24,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:24,328 INFO L225 Difference]: With dead ends: 237 [2022-02-10 02:48:24,328 INFO L226 Difference]: Without dead ends: 231 [2022-02-10 02:48:24,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=364, Invalid=896, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:48:24,328 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 88 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:24,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 52 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:24,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-02-10 02:48:24,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 151. [2022-02-10 02:48:24,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.54) internal successors, (381), 150 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 381 transitions. [2022-02-10 02:48:24,332 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 381 transitions. Word has length 18 [2022-02-10 02:48:24,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:24,332 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 381 transitions. [2022-02-10 02:48:24,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:24,332 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 381 transitions. [2022-02-10 02:48:24,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:24,333 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:24,333 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:24,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:24,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-02-10 02:48:24,555 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:24,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:24,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1060747729, now seen corresponding path program 44 times [2022-02-10 02:48:24,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:24,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358306204] [2022-02-10 02:48:24,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:24,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:24,686 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:24,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358306204] [2022-02-10 02:48:24,686 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358306204] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:24,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128251764] [2022-02-10 02:48:24,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:24,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:24,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:24,687 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:24,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-10 02:48:24,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:24,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:24,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:24,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:24,883 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:24,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:25,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:25,067 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128251764] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:25,067 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:25,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-02-10 02:48:25,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97317602] [2022-02-10 02:48:25,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:25,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 02:48:25,068 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:25,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 02:48:25,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:48:25,068 INFO L87 Difference]: Start difference. First operand 151 states and 381 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:25,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:25,342 INFO L93 Difference]: Finished difference Result 223 states and 459 transitions. [2022-02-10 02:48:25,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:48:25,342 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:25,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:25,343 INFO L225 Difference]: With dead ends: 223 [2022-02-10 02:48:25,343 INFO L226 Difference]: Without dead ends: 211 [2022-02-10 02:48:25,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:48:25,343 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 72 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:25,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 216 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:25,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-02-10 02:48:25,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 162. [2022-02-10 02:48:25,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.459627329192547) internal successors, (396), 161 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 396 transitions. [2022-02-10 02:48:25,348 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 396 transitions. Word has length 19 [2022-02-10 02:48:25,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:25,348 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 396 transitions. [2022-02-10 02:48:25,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:25,348 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 396 transitions. [2022-02-10 02:48:25,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:25,348 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:25,349 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:25,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:25,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-02-10 02:48:25,563 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:25,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:25,564 INFO L85 PathProgramCache]: Analyzing trace with hash -654074193, now seen corresponding path program 45 times [2022-02-10 02:48:25,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:25,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185294060] [2022-02-10 02:48:25,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:25,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:25,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:25,668 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:25,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185294060] [2022-02-10 02:48:25,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185294060] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:25,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015206895] [2022-02-10 02:48:25,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:48:25,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:25,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:25,670 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:25,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-10 02:48:25,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:48:25,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:25,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:25,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:25,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:26,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015206895] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:26,159 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:26,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2022-02-10 02:48:26,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947380198] [2022-02-10 02:48:26,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:26,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:48:26,159 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:26,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:48:26,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:48:26,160 INFO L87 Difference]: Start difference. First operand 162 states and 396 transitions. Second operand has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:26,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:26,381 INFO L93 Difference]: Finished difference Result 245 states and 499 transitions. [2022-02-10 02:48:26,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:48:26,381 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:26,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:26,382 INFO L225 Difference]: With dead ends: 245 [2022-02-10 02:48:26,382 INFO L226 Difference]: Without dead ends: 241 [2022-02-10 02:48:26,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:48:26,383 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 95 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:26,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 287 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:26,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-02-10 02:48:26,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 171. [2022-02-10 02:48:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 2.5058823529411764) internal successors, (426), 170 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 426 transitions. [2022-02-10 02:48:26,387 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 426 transitions. Word has length 19 [2022-02-10 02:48:26,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:26,387 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 426 transitions. [2022-02-10 02:48:26,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:26,387 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 426 transitions. [2022-02-10 02:48:26,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:26,387 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:26,387 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:26,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:26,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:26,595 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:26,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:26,596 INFO L85 PathProgramCache]: Analyzing trace with hash 189934187, now seen corresponding path program 46 times [2022-02-10 02:48:26,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:26,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686607640] [2022-02-10 02:48:26,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:26,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:26,723 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:26,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:26,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686607640] [2022-02-10 02:48:26,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686607640] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:26,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095661377] [2022-02-10 02:48:26,724 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:48:26,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:26,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:26,725 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:26,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-10 02:48:26,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:48:26,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:26,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:26,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:26,904 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:26,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:27,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095661377] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:27,137 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:27,137 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-10 02:48:27,137 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676930469] [2022-02-10 02:48:27,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:27,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:48:27,138 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:27,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:48:27,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:48:27,138 INFO L87 Difference]: Start difference. First operand 171 states and 426 transitions. Second operand has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:27,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:27,393 INFO L93 Difference]: Finished difference Result 236 states and 490 transitions. [2022-02-10 02:48:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:48:27,393 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:27,394 INFO L225 Difference]: With dead ends: 236 [2022-02-10 02:48:27,394 INFO L226 Difference]: Without dead ends: 225 [2022-02-10 02:48:27,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:48:27,395 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 108 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:27,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 264 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:27,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-02-10 02:48:27,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 167. [2022-02-10 02:48:27,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 2.4879518072289155) internal successors, (413), 166 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:27,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 413 transitions. [2022-02-10 02:48:27,399 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 413 transitions. Word has length 19 [2022-02-10 02:48:27,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:27,399 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 413 transitions. [2022-02-10 02:48:27,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:27,399 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 413 transitions. [2022-02-10 02:48:27,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:27,400 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:27,400 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:27,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-02-10 02:48:27,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:27,615 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:27,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:27,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1646427947, now seen corresponding path program 47 times [2022-02-10 02:48:27,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:27,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923325899] [2022-02-10 02:48:27,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:27,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:27,716 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:27,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923325899] [2022-02-10 02:48:27,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923325899] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:27,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969608839] [2022-02-10 02:48:27,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:48:27,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:27,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:27,718 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:27,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-10 02:48:27,740 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:48:27,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:27,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:27,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:27,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:28,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:28,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969608839] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:28,111 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:28,111 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-02-10 02:48:28,111 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336799093] [2022-02-10 02:48:28,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:28,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:48:28,112 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:28,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:48:28,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:48:28,112 INFO L87 Difference]: Start difference. First operand 167 states and 413 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:28,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:28,330 INFO L93 Difference]: Finished difference Result 233 states and 479 transitions. [2022-02-10 02:48:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:48:28,330 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:28,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:28,331 INFO L225 Difference]: With dead ends: 233 [2022-02-10 02:48:28,331 INFO L226 Difference]: Without dead ends: 229 [2022-02-10 02:48:28,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:48:28,331 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 99 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:28,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 216 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:28,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-02-10 02:48:28,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 167. [2022-02-10 02:48:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 2.4879518072289155) internal successors, (413), 166 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:28,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 413 transitions. [2022-02-10 02:48:28,335 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 413 transitions. Word has length 19 [2022-02-10 02:48:28,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:28,335 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 413 transitions. [2022-02-10 02:48:28,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:28,335 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 413 transitions. [2022-02-10 02:48:28,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:28,336 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:28,336 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:28,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-02-10 02:48:28,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:28,547 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:28,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:28,548 INFO L85 PathProgramCache]: Analyzing trace with hash -52449745, now seen corresponding path program 48 times [2022-02-10 02:48:28,548 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:28,548 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915574410] [2022-02-10 02:48:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:28,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:28,668 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:28,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915574410] [2022-02-10 02:48:28,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915574410] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:28,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553545664] [2022-02-10 02:48:28,669 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:28,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:28,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:28,672 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:28,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-10 02:48:28,700 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:48:28,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:28,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:28,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:28,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:28,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:29,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553545664] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:29,129 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:29,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2022-02-10 02:48:29,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056755243] [2022-02-10 02:48:29,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:29,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:48:29,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:29,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:48:29,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:48:29,131 INFO L87 Difference]: Start difference. First operand 167 states and 413 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:29,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:29,387 INFO L93 Difference]: Finished difference Result 218 states and 463 transitions. [2022-02-10 02:48:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:48:29,387 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:29,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:29,388 INFO L225 Difference]: With dead ends: 218 [2022-02-10 02:48:29,388 INFO L226 Difference]: Without dead ends: 214 [2022-02-10 02:48:29,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:48:29,389 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 51 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:29,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 225 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:29,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-02-10 02:48:29,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 168. [2022-02-10 02:48:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 2.4790419161676644) internal successors, (414), 167 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:29,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 414 transitions. [2022-02-10 02:48:29,392 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 414 transitions. Word has length 19 [2022-02-10 02:48:29,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:29,392 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 414 transitions. [2022-02-10 02:48:29,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:29,392 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 414 transitions. [2022-02-10 02:48:29,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:29,393 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:29,393 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:29,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-02-10 02:48:29,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-02-10 02:48:29,607 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:29,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:29,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1952135787, now seen corresponding path program 49 times [2022-02-10 02:48:29,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:29,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096368117] [2022-02-10 02:48:29,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:29,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:29,702 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:29,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096368117] [2022-02-10 02:48:29,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096368117] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:29,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919220868] [2022-02-10 02:48:29,702 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:48:29,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:29,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:29,704 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:29,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-10 02:48:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:29,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:29,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:29,879 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:29,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:30,134 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:30,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919220868] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:30,134 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:30,134 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 10] total 20 [2022-02-10 02:48:30,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143848367] [2022-02-10 02:48:30,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:30,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:48:30,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:30,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:48:30,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:48:30,135 INFO L87 Difference]: Start difference. First operand 168 states and 414 transitions. Second operand has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:30,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:30,310 INFO L93 Difference]: Finished difference Result 217 states and 476 transitions. [2022-02-10 02:48:30,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 02:48:30,310 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:30,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:30,311 INFO L225 Difference]: With dead ends: 217 [2022-02-10 02:48:30,311 INFO L226 Difference]: Without dead ends: 213 [2022-02-10 02:48:30,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:48:30,312 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 71 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:30,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 204 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:30,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-02-10 02:48:30,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 172. [2022-02-10 02:48:30,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.502923976608187) internal successors, (428), 171 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:30,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 428 transitions. [2022-02-10 02:48:30,316 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 428 transitions. Word has length 19 [2022-02-10 02:48:30,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:30,316 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 428 transitions. [2022-02-10 02:48:30,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 428 transitions. [2022-02-10 02:48:30,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:30,317 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:30,317 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:30,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:30,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-02-10 02:48:30,539 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:30,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:30,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1498823129, now seen corresponding path program 50 times [2022-02-10 02:48:30,539 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:30,539 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175090966] [2022-02-10 02:48:30,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:30,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:30,636 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:30,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:30,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175090966] [2022-02-10 02:48:30,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175090966] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:30,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757108695] [2022-02-10 02:48:30,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:30,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:30,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:30,637 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:30,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-10 02:48:30,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:30,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:30,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:30,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:30,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:31,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757108695] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:31,070 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:31,070 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 10] total 21 [2022-02-10 02:48:31,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870073938] [2022-02-10 02:48:31,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:31,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:48:31,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:31,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:48:31,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:48:31,071 INFO L87 Difference]: Start difference. First operand 172 states and 428 transitions. Second operand has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:31,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:31,233 INFO L93 Difference]: Finished difference Result 217 states and 476 transitions. [2022-02-10 02:48:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 02:48:31,233 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:31,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:31,234 INFO L225 Difference]: With dead ends: 217 [2022-02-10 02:48:31,234 INFO L226 Difference]: Without dead ends: 212 [2022-02-10 02:48:31,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:48:31,235 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 83 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:31,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 221 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:31,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-02-10 02:48:31,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 172. [2022-02-10 02:48:31,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.502923976608187) internal successors, (428), 171 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 428 transitions. [2022-02-10 02:48:31,239 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 428 transitions. Word has length 19 [2022-02-10 02:48:31,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:31,239 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 428 transitions. [2022-02-10 02:48:31,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:31,239 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 428 transitions. [2022-02-10 02:48:31,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:31,240 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:31,240 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:31,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:31,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-02-10 02:48:31,455 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:31,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:31,456 INFO L85 PathProgramCache]: Analyzing trace with hash 735284365, now seen corresponding path program 51 times [2022-02-10 02:48:31,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:31,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068209127] [2022-02-10 02:48:31,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:31,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:31,564 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:31,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068209127] [2022-02-10 02:48:31,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068209127] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:31,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74914216] [2022-02-10 02:48:31,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:48:31,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:31,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:31,568 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:31,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-10 02:48:31,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:48:31,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:31,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:31,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:31,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:31,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:31,982 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74914216] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:31,983 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:31,983 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 10] total 19 [2022-02-10 02:48:31,983 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589893859] [2022-02-10 02:48:31,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:31,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:48:31,983 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:31,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:48:31,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:48:31,983 INFO L87 Difference]: Start difference. First operand 172 states and 428 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:32,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:32,135 INFO L93 Difference]: Finished difference Result 205 states and 461 transitions. [2022-02-10 02:48:32,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 02:48:32,136 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:32,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:32,137 INFO L225 Difference]: With dead ends: 205 [2022-02-10 02:48:32,137 INFO L226 Difference]: Without dead ends: 200 [2022-02-10 02:48:32,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:48:32,137 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:32,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 187 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:32,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-02-10 02:48:32,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 172. [2022-02-10 02:48:32,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.502923976608187) internal successors, (428), 171 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 428 transitions. [2022-02-10 02:48:32,141 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 428 transitions. Word has length 19 [2022-02-10 02:48:32,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:32,141 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 428 transitions. [2022-02-10 02:48:32,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 428 transitions. [2022-02-10 02:48:32,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:32,141 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:32,142 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:32,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:32,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-02-10 02:48:32,355 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:32,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:32,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1140266543, now seen corresponding path program 52 times [2022-02-10 02:48:32,356 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:32,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910373239] [2022-02-10 02:48:32,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:32,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:32,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:32,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910373239] [2022-02-10 02:48:32,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910373239] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:32,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023260673] [2022-02-10 02:48:32,466 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:48:32,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:32,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:32,472 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:32,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-10 02:48:32,498 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:48:32,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:32,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:32,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:32,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:32,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023260673] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:32,933 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:32,933 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 20 [2022-02-10 02:48:32,933 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902287556] [2022-02-10 02:48:32,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:32,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:48:32,934 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:32,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:48:32,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:48:32,934 INFO L87 Difference]: Start difference. First operand 172 states and 428 transitions. Second operand has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:33,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:33,188 INFO L93 Difference]: Finished difference Result 270 states and 568 transitions. [2022-02-10 02:48:33,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:48:33,188 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:33,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:33,189 INFO L225 Difference]: With dead ends: 270 [2022-02-10 02:48:33,189 INFO L226 Difference]: Without dead ends: 260 [2022-02-10 02:48:33,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:48:33,190 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 143 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:33,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 273 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:33,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-02-10 02:48:33,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 186. [2022-02-10 02:48:33,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.5837837837837836) internal successors, (478), 185 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 478 transitions. [2022-02-10 02:48:33,194 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 478 transitions. Word has length 19 [2022-02-10 02:48:33,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:33,194 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 478 transitions. [2022-02-10 02:48:33,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:33,194 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 478 transitions. [2022-02-10 02:48:33,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:33,195 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:33,195 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:33,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-02-10 02:48:33,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-02-10 02:48:33,399 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:33,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:33,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1984274923, now seen corresponding path program 53 times [2022-02-10 02:48:33,400 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:33,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32739188] [2022-02-10 02:48:33,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:33,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:33,498 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:33,499 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:33,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32739188] [2022-02-10 02:48:33,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32739188] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:33,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22116966] [2022-02-10 02:48:33,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:48:33,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:33,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:33,500 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:33,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-10 02:48:33,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:48:33,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:33,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:33,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:33,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:33,892 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:33,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22116966] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:33,892 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:33,892 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 21 [2022-02-10 02:48:33,892 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615993711] [2022-02-10 02:48:33,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:33,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:48:33,892 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:33,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:48:33,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:48:33,893 INFO L87 Difference]: Start difference. First operand 186 states and 478 transitions. Second operand has 22 states, 22 states have (on average 2.0) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:34,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:34,137 INFO L93 Difference]: Finished difference Result 267 states and 563 transitions. [2022-02-10 02:48:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:48:34,137 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:34,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:34,138 INFO L225 Difference]: With dead ends: 267 [2022-02-10 02:48:34,138 INFO L226 Difference]: Without dead ends: 255 [2022-02-10 02:48:34,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:48:34,139 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 127 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:34,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 317 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:34,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-02-10 02:48:34,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 183. [2022-02-10 02:48:34,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.5549450549450547) internal successors, (465), 182 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:34,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 465 transitions. [2022-02-10 02:48:34,143 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 465 transitions. Word has length 19 [2022-02-10 02:48:34,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:34,143 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 465 transitions. [2022-02-10 02:48:34,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:34,143 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 465 transitions. [2022-02-10 02:48:34,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:34,144 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:34,144 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:34,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:34,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-02-10 02:48:34,365 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:34,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:34,366 INFO L85 PathProgramCache]: Analyzing trace with hash -76584879, now seen corresponding path program 54 times [2022-02-10 02:48:34,366 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:34,366 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329899321] [2022-02-10 02:48:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:34,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:34,479 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:34,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329899321] [2022-02-10 02:48:34,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329899321] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:34,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895110386] [2022-02-10 02:48:34,479 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:34,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:34,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:34,480 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:34,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-10 02:48:34,505 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:48:34,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:34,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:34,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:34,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:34,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895110386] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:34,857 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:34,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 19 [2022-02-10 02:48:34,858 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518684531] [2022-02-10 02:48:34,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:34,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:48:34,858 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:34,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:48:34,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:48:34,858 INFO L87 Difference]: Start difference. First operand 183 states and 465 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:35,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:35,119 INFO L93 Difference]: Finished difference Result 253 states and 536 transitions. [2022-02-10 02:48:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:48:35,119 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:35,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:35,120 INFO L225 Difference]: With dead ends: 253 [2022-02-10 02:48:35,120 INFO L226 Difference]: Without dead ends: 241 [2022-02-10 02:48:35,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:48:35,121 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 109 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:35,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 280 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:35,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-02-10 02:48:35,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 182. [2022-02-10 02:48:35,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.541436464088398) internal successors, (460), 181 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:35,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 460 transitions. [2022-02-10 02:48:35,125 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 460 transitions. Word has length 19 [2022-02-10 02:48:35,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:35,125 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 460 transitions. [2022-02-10 02:48:35,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:35,125 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 460 transitions. [2022-02-10 02:48:35,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:35,126 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:35,126 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:35,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:35,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:35,339 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:35,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:35,340 INFO L85 PathProgramCache]: Analyzing trace with hash 461270699, now seen corresponding path program 55 times [2022-02-10 02:48:35,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:35,340 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027706751] [2022-02-10 02:48:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:35,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:35,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:35,442 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:35,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027706751] [2022-02-10 02:48:35,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027706751] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:35,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744175297] [2022-02-10 02:48:35,442 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:48:35,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:35,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:35,443 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:35,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-10 02:48:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:35,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:35,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:35,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:35,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:35,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744175297] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:35,827 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:35,827 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 18 [2022-02-10 02:48:35,827 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034497441] [2022-02-10 02:48:35,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:35,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:48:35,827 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:35,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:48:35,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:48:35,828 INFO L87 Difference]: Start difference. First operand 182 states and 460 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:36,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:36,069 INFO L93 Difference]: Finished difference Result 232 states and 510 transitions. [2022-02-10 02:48:36,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:48:36,070 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:36,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:36,071 INFO L225 Difference]: With dead ends: 232 [2022-02-10 02:48:36,071 INFO L226 Difference]: Without dead ends: 227 [2022-02-10 02:48:36,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:48:36,071 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 69 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:36,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 249 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:36,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-02-10 02:48:36,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 183. [2022-02-10 02:48:36,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.532967032967033) internal successors, (461), 182 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:36,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 461 transitions. [2022-02-10 02:48:36,075 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 461 transitions. Word has length 19 [2022-02-10 02:48:36,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:36,075 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 461 transitions. [2022-02-10 02:48:36,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:36,075 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 461 transitions. [2022-02-10 02:48:36,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:36,076 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:36,076 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:36,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:36,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:36,290 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:36,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:36,290 INFO L85 PathProgramCache]: Analyzing trace with hash -896211029, now seen corresponding path program 56 times [2022-02-10 02:48:36,290 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:36,290 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991033463] [2022-02-10 02:48:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:36,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:36,389 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:36,389 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991033463] [2022-02-10 02:48:36,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991033463] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:36,389 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685888683] [2022-02-10 02:48:36,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:36,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:36,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:36,390 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:36,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-10 02:48:36,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:36,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:36,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:36,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:48:36,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:36,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685888683] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:36,803 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:36,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 10] total 19 [2022-02-10 02:48:36,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958275087] [2022-02-10 02:48:36,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:36,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:48:36,803 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:36,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:48:36,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:48:36,804 INFO L87 Difference]: Start difference. First operand 183 states and 461 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:36,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:36,939 INFO L93 Difference]: Finished difference Result 205 states and 483 transitions. [2022-02-10 02:48:36,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 02:48:36,939 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:36,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:36,944 INFO L225 Difference]: With dead ends: 205 [2022-02-10 02:48:36,944 INFO L226 Difference]: Without dead ends: 201 [2022-02-10 02:48:36,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:48:36,944 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 53 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:36,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 147 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:36,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-02-10 02:48:36,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 181. [2022-02-10 02:48:36,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.5277777777777777) internal successors, (455), 180 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:36,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 455 transitions. [2022-02-10 02:48:36,950 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 455 transitions. Word has length 19 [2022-02-10 02:48:36,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:36,950 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 455 transitions. [2022-02-10 02:48:36,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 455 transitions. [2022-02-10 02:48:36,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:36,951 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:36,951 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:36,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-02-10 02:48:37,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:37,163 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:37,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:37,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1742123755, now seen corresponding path program 57 times [2022-02-10 02:48:37,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:37,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794788153] [2022-02-10 02:48:37,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:37,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:37,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:37,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794788153] [2022-02-10 02:48:37,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794788153] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:37,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472348804] [2022-02-10 02:48:37,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:48:37,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:37,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:37,261 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:37,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-10 02:48:37,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:48:37,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:37,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:37,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:37,426 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:37,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:37,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472348804] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:37,651 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:37,651 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2022-02-10 02:48:37,652 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061966948] [2022-02-10 02:48:37,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:37,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:48:37,652 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:37,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:48:37,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:48:37,652 INFO L87 Difference]: Start difference. First operand 181 states and 455 transitions. Second operand has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:37,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:37,908 INFO L93 Difference]: Finished difference Result 290 states and 618 transitions. [2022-02-10 02:48:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:48:37,908 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:37,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:37,909 INFO L225 Difference]: With dead ends: 290 [2022-02-10 02:48:37,909 INFO L226 Difference]: Without dead ends: 282 [2022-02-10 02:48:37,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:48:37,910 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 129 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:37,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 301 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:37,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-02-10 02:48:37,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 201. [2022-02-10 02:48:37,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 2.63) internal successors, (526), 200 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:37,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 526 transitions. [2022-02-10 02:48:37,913 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 526 transitions. Word has length 19 [2022-02-10 02:48:37,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:37,914 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 526 transitions. [2022-02-10 02:48:37,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:37,914 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 526 transitions. [2022-02-10 02:48:37,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:37,914 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:37,915 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:37,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:38,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-02-10 02:48:38,127 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:38,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:38,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1708835161, now seen corresponding path program 58 times [2022-02-10 02:48:38,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:38,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208450182] [2022-02-10 02:48:38,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:38,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:38,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:38,236 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:38,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208450182] [2022-02-10 02:48:38,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208450182] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:38,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991459656] [2022-02-10 02:48:38,237 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:48:38,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:38,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:38,240 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:38,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-10 02:48:38,267 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:48:38,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:38,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:38,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:38,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:38,673 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:38,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991459656] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:38,673 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:38,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-10 02:48:38,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151800851] [2022-02-10 02:48:38,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:38,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:48:38,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:38,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:48:38,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:48:38,674 INFO L87 Difference]: Start difference. First operand 201 states and 526 transitions. Second operand has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:38,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:38,961 INFO L93 Difference]: Finished difference Result 292 states and 619 transitions. [2022-02-10 02:48:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:48:38,961 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:38,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:38,962 INFO L225 Difference]: With dead ends: 292 [2022-02-10 02:48:38,962 INFO L226 Difference]: Without dead ends: 281 [2022-02-10 02:48:38,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:48:38,963 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 91 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:38,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 441 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:38,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-02-10 02:48:38,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 196. [2022-02-10 02:48:38,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.594871794871795) internal successors, (506), 195 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:38,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 506 transitions. [2022-02-10 02:48:38,967 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 506 transitions. Word has length 19 [2022-02-10 02:48:38,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:38,967 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 506 transitions. [2022-02-10 02:48:38,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:38,968 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 506 transitions. [2022-02-10 02:48:38,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:38,968 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:38,968 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:38,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-02-10 02:48:39,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2022-02-10 02:48:39,169 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:39,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:39,169 INFO L85 PathProgramCache]: Analyzing trace with hash 525272333, now seen corresponding path program 59 times [2022-02-10 02:48:39,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:39,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650528848] [2022-02-10 02:48:39,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:39,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:39,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:39,281 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:39,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650528848] [2022-02-10 02:48:39,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650528848] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:39,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318336314] [2022-02-10 02:48:39,281 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:48:39,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:39,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:39,283 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:39,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-10 02:48:39,304 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:48:39,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:39,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:39,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:39,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:39,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318336314] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:39,741 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:39,741 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-02-10 02:48:39,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816245638] [2022-02-10 02:48:39,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:39,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:48:39,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:39,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:48:39,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:48:39,742 INFO L87 Difference]: Start difference. First operand 196 states and 506 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:40,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:40,107 INFO L93 Difference]: Finished difference Result 296 states and 608 transitions. [2022-02-10 02:48:40,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:48:40,107 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:40,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:40,108 INFO L225 Difference]: With dead ends: 296 [2022-02-10 02:48:40,108 INFO L226 Difference]: Without dead ends: 284 [2022-02-10 02:48:40,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:48:40,111 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 105 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:40,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 389 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:48:40,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-02-10 02:48:40,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 192. [2022-02-10 02:48:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.575916230366492) internal successors, (492), 191 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:40,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 492 transitions. [2022-02-10 02:48:40,116 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 492 transitions. Word has length 19 [2022-02-10 02:48:40,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:40,116 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 492 transitions. [2022-02-10 02:48:40,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:40,116 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 492 transitions. [2022-02-10 02:48:40,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:40,117 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:40,117 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:40,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-02-10 02:48:40,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:40,327 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:40,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:40,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1063127911, now seen corresponding path program 60 times [2022-02-10 02:48:40,328 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:40,328 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455661835] [2022-02-10 02:48:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:40,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:40,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:40,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:40,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455661835] [2022-02-10 02:48:40,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455661835] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:40,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632759992] [2022-02-10 02:48:40,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:40,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:40,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:40,452 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:40,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-10 02:48:40,479 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:48:40,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:40,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:40,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:40,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:40,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632759992] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:40,869 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:40,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2022-02-10 02:48:40,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139511147] [2022-02-10 02:48:40,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:40,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:48:40,870 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:40,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:48:40,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:48:40,870 INFO L87 Difference]: Start difference. First operand 192 states and 492 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:41,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:41,149 INFO L93 Difference]: Finished difference Result 273 states and 575 transitions. [2022-02-10 02:48:41,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:48:41,149 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:41,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:41,150 INFO L225 Difference]: With dead ends: 273 [2022-02-10 02:48:41,150 INFO L226 Difference]: Without dead ends: 260 [2022-02-10 02:48:41,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:48:41,151 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 94 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:41,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 263 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:41,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-02-10 02:48:41,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 188. [2022-02-10 02:48:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.572192513368984) internal successors, (481), 187 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:41,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 481 transitions. [2022-02-10 02:48:41,155 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 481 transitions. Word has length 19 [2022-02-10 02:48:41,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:41,155 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 481 transitions. [2022-02-10 02:48:41,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:41,155 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 481 transitions. [2022-02-10 02:48:41,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:41,156 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:41,156 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:41,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-02-10 02:48:41,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:41,359 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:41,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:41,360 INFO L85 PathProgramCache]: Analyzing trace with hash 556781645, now seen corresponding path program 61 times [2022-02-10 02:48:41,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:41,360 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631519645] [2022-02-10 02:48:41,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:41,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:41,500 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:41,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631519645] [2022-02-10 02:48:41,500 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631519645] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:41,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850306012] [2022-02-10 02:48:41,500 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:48:41,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:41,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:41,502 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:41,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-10 02:48:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:41,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:41,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:41,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:41,969 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:41,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850306012] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:41,969 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:41,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-02-10 02:48:41,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189162333] [2022-02-10 02:48:41,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:41,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 02:48:41,970 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:41,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 02:48:41,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:48:41,970 INFO L87 Difference]: Start difference. First operand 188 states and 481 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:42,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:42,251 INFO L93 Difference]: Finished difference Result 248 states and 542 transitions. [2022-02-10 02:48:42,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:48:42,251 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:42,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:42,252 INFO L225 Difference]: With dead ends: 248 [2022-02-10 02:48:42,252 INFO L226 Difference]: Without dead ends: 243 [2022-02-10 02:48:42,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:48:42,253 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 56 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:42,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 312 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-02-10 02:48:42,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 191. [2022-02-10 02:48:42,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.5473684210526315) internal successors, (484), 190 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:42,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 484 transitions. [2022-02-10 02:48:42,257 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 484 transitions. Word has length 19 [2022-02-10 02:48:42,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:42,257 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 484 transitions. [2022-02-10 02:48:42,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:42,257 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 484 transitions. [2022-02-10 02:48:42,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:42,258 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:42,258 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:42,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:42,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-02-10 02:48:42,481 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:42,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:42,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1709057677, now seen corresponding path program 62 times [2022-02-10 02:48:42,481 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:42,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266558404] [2022-02-10 02:48:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:42,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:42,577 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:42,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266558404] [2022-02-10 02:48:42,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266558404] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:42,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028364111] [2022-02-10 02:48:42,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:42,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:42,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:42,579 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:42,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-10 02:48:42,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:42,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:42,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:42,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:42,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:42,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:42,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028364111] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:42,996 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:42,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 10] total 20 [2022-02-10 02:48:42,997 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468488012] [2022-02-10 02:48:42,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:42,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:48:42,997 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:42,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:48:42,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:48:42,997 INFO L87 Difference]: Start difference. First operand 191 states and 484 transitions. Second operand has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:43,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:43,205 INFO L93 Difference]: Finished difference Result 255 states and 569 transitions. [2022-02-10 02:48:43,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:48:43,205 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:43,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:43,206 INFO L225 Difference]: With dead ends: 255 [2022-02-10 02:48:43,206 INFO L226 Difference]: Without dead ends: 249 [2022-02-10 02:48:43,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:48:43,207 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 78 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:43,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 220 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:43,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-02-10 02:48:43,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 196. [2022-02-10 02:48:43,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.5692307692307694) internal successors, (501), 195 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:43,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 501 transitions. [2022-02-10 02:48:43,211 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 501 transitions. Word has length 19 [2022-02-10 02:48:43,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:43,211 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 501 transitions. [2022-02-10 02:48:43,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 501 transitions. [2022-02-10 02:48:43,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:43,212 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:43,212 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:43,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:43,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-02-10 02:48:43,431 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:43,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:43,431 INFO L85 PathProgramCache]: Analyzing trace with hash -865049297, now seen corresponding path program 63 times [2022-02-10 02:48:43,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:43,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145227469] [2022-02-10 02:48:43,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:43,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:43,539 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:43,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145227469] [2022-02-10 02:48:43,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145227469] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:43,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523082075] [2022-02-10 02:48:43,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:48:43,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:43,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:43,541 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:43,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-10 02:48:43,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:48:43,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:43,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:43,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:43,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:43,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523082075] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:43,953 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:43,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 10] total 21 [2022-02-10 02:48:43,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406654530] [2022-02-10 02:48:43,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:43,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:48:43,954 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:43,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:48:43,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:48:43,954 INFO L87 Difference]: Start difference. First operand 196 states and 501 transitions. Second operand has 22 states, 22 states have (on average 2.0) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:44,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:44,105 INFO L93 Difference]: Finished difference Result 244 states and 557 transitions. [2022-02-10 02:48:44,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 02:48:44,105 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:44,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:44,106 INFO L225 Difference]: With dead ends: 244 [2022-02-10 02:48:44,106 INFO L226 Difference]: Without dead ends: 239 [2022-02-10 02:48:44,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:48:44,107 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 99 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:44,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 184 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:44,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-02-10 02:48:44,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 196. [2022-02-10 02:48:44,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.5692307692307694) internal successors, (501), 195 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:44,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 501 transitions. [2022-02-10 02:48:44,110 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 501 transitions. Word has length 19 [2022-02-10 02:48:44,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:44,111 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 501 transitions. [2022-02-10 02:48:44,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:44,111 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 501 transitions. [2022-02-10 02:48:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:44,111 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:44,111 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:44,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:44,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:44,316 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:44,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:44,316 INFO L85 PathProgramCache]: Analyzing trace with hash 591444463, now seen corresponding path program 64 times [2022-02-10 02:48:44,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:44,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044223046] [2022-02-10 02:48:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:44,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:44,415 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:44,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044223046] [2022-02-10 02:48:44,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044223046] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:44,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198765518] [2022-02-10 02:48:44,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:48:44,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:44,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:44,417 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:44,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-10 02:48:44,438 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:48:44,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:44,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:44,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:44,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:44,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198765518] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:44,824 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:44,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 10] total 19 [2022-02-10 02:48:44,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143464809] [2022-02-10 02:48:44,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:44,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:48:44,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:44,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:48:44,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:48:44,825 INFO L87 Difference]: Start difference. First operand 196 states and 501 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:44,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:44,987 INFO L93 Difference]: Finished difference Result 234 states and 544 transitions. [2022-02-10 02:48:44,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:48:44,988 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:44,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:44,988 INFO L225 Difference]: With dead ends: 234 [2022-02-10 02:48:44,989 INFO L226 Difference]: Without dead ends: 230 [2022-02-10 02:48:44,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:48:44,989 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 72 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:44,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 184 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:44,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-02-10 02:48:44,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 196. [2022-02-10 02:48:44,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.5692307692307694) internal successors, (501), 195 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 501 transitions. [2022-02-10 02:48:44,992 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 501 transitions. Word has length 19 [2022-02-10 02:48:44,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:44,992 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 501 transitions. [2022-02-10 02:48:44,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:44,992 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 501 transitions. [2022-02-10 02:48:44,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:44,993 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:44,993 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:45,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-02-10 02:48:45,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-10 02:48:45,194 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:45,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:45,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1321499669, now seen corresponding path program 65 times [2022-02-10 02:48:45,194 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:45,194 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397008267] [2022-02-10 02:48:45,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:45,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:45,303 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:45,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397008267] [2022-02-10 02:48:45,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397008267] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:45,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704060740] [2022-02-10 02:48:45,304 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:48:45,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:45,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:45,305 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:45,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-10 02:48:45,332 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:48:45,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:45,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:45,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:45,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:45,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:45,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704060740] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:45,722 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:45,722 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 20 [2022-02-10 02:48:45,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046334937] [2022-02-10 02:48:45,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:45,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:48:45,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:45,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:48:45,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:48:45,723 INFO L87 Difference]: Start difference. First operand 196 states and 501 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:45,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:45,919 INFO L93 Difference]: Finished difference Result 270 states and 602 transitions. [2022-02-10 02:48:45,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:48:45,919 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:45,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:45,920 INFO L225 Difference]: With dead ends: 270 [2022-02-10 02:48:45,920 INFO L226 Difference]: Without dead ends: 264 [2022-02-10 02:48:45,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:48:45,920 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 98 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:45,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 228 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:45,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-02-10 02:48:45,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 203. [2022-02-10 02:48:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 2.599009900990099) internal successors, (525), 202 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 525 transitions. [2022-02-10 02:48:45,925 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 525 transitions. Word has length 19 [2022-02-10 02:48:45,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:45,925 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 525 transitions. [2022-02-10 02:48:45,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:45,925 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 525 transitions. [2022-02-10 02:48:45,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:45,926 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:45,926 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:45,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-02-10 02:48:46,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:46,147 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:46,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:46,148 INFO L85 PathProgramCache]: Analyzing trace with hash -477491289, now seen corresponding path program 66 times [2022-02-10 02:48:46,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:46,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787977568] [2022-02-10 02:48:46,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:46,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:46,261 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:46,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787977568] [2022-02-10 02:48:46,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787977568] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:46,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661988051] [2022-02-10 02:48:46,262 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:46,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:46,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:46,264 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:46,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-10 02:48:46,294 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:48:46,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:46,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:46,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:46,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:46,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661988051] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:46,700 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:46,700 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 21 [2022-02-10 02:48:46,700 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116457019] [2022-02-10 02:48:46,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:46,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:48:46,700 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:46,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:48:46,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:48:46,701 INFO L87 Difference]: Start difference. First operand 203 states and 525 transitions. Second operand has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:46,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:46,861 INFO L93 Difference]: Finished difference Result 260 states and 590 transitions. [2022-02-10 02:48:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:48:46,861 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:46,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:46,862 INFO L225 Difference]: With dead ends: 260 [2022-02-10 02:48:46,862 INFO L226 Difference]: Without dead ends: 255 [2022-02-10 02:48:46,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:48:46,863 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 109 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:46,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 200 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:46,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-02-10 02:48:46,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 203. [2022-02-10 02:48:46,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 2.599009900990099) internal successors, (525), 202 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:46,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 525 transitions. [2022-02-10 02:48:46,867 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 525 transitions. Word has length 19 [2022-02-10 02:48:46,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:46,867 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 525 transitions. [2022-02-10 02:48:46,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:46,868 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 525 transitions. [2022-02-10 02:48:46,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:46,868 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:46,868 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:46,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-02-10 02:48:47,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:47,083 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:47,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:47,084 INFO L85 PathProgramCache]: Analyzing trace with hash 979002471, now seen corresponding path program 67 times [2022-02-10 02:48:47,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:47,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455823187] [2022-02-10 02:48:47,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:47,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:47,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:47,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455823187] [2022-02-10 02:48:47,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455823187] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:47,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62793048] [2022-02-10 02:48:47,191 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:48:47,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:47,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:47,196 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:47,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-10 02:48:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:47,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:47,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:47,381 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:47,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:47,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:47,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62793048] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:47,607 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:47,607 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 19 [2022-02-10 02:48:47,607 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914354318] [2022-02-10 02:48:47,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:47,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:48:47,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:47,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:48:47,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:48:47,608 INFO L87 Difference]: Start difference. First operand 203 states and 525 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:47,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:47,787 INFO L93 Difference]: Finished difference Result 257 states and 586 transitions. [2022-02-10 02:48:47,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:48:47,787 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:47,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:47,788 INFO L225 Difference]: With dead ends: 257 [2022-02-10 02:48:47,788 INFO L226 Difference]: Without dead ends: 250 [2022-02-10 02:48:47,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:48:47,788 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 75 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:47,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 177 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:47,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-02-10 02:48:47,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 201. [2022-02-10 02:48:47,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 2.61) internal successors, (522), 200 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:47,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 522 transitions. [2022-02-10 02:48:47,793 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 522 transitions. Word has length 19 [2022-02-10 02:48:47,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:47,793 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 522 transitions. [2022-02-10 02:48:47,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:47,793 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 522 transitions. [2022-02-10 02:48:47,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:48:47,794 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:47,794 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:47,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-02-10 02:48:48,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-02-10 02:48:48,007 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:48,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:48,008 INFO L85 PathProgramCache]: Analyzing trace with hash -719875221, now seen corresponding path program 68 times [2022-02-10 02:48:48,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:48,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014514344] [2022-02-10 02:48:48,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:48,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:48,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:48,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014514344] [2022-02-10 02:48:48,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014514344] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:48,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666211072] [2022-02-10 02:48:48,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:48,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:48,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:48,113 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:48,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-10 02:48:48,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:48,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:48,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 02:48:48,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:48,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:48,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:48,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666211072] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:48,502 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:48,502 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 18 [2022-02-10 02:48:48,502 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298978932] [2022-02-10 02:48:48,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:48,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:48:48,502 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:48,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:48:48,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:48:48,503 INFO L87 Difference]: Start difference. First operand 201 states and 522 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:48,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:48,699 INFO L93 Difference]: Finished difference Result 241 states and 565 transitions. [2022-02-10 02:48:48,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:48:48,700 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:48:48,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:48,701 INFO L225 Difference]: With dead ends: 241 [2022-02-10 02:48:48,701 INFO L226 Difference]: Without dead ends: 237 [2022-02-10 02:48:48,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:48:48,701 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 45 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:48,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 203 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:48,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-02-10 02:48:48,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 201. [2022-02-10 02:48:48,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 2.61) internal successors, (522), 200 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:48,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 522 transitions. [2022-02-10 02:48:48,706 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 522 transitions. Word has length 19 [2022-02-10 02:48:48,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:48,706 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 522 transitions. [2022-02-10 02:48:48,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:48,706 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 522 transitions. [2022-02-10 02:48:48,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:48:48,706 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:48,707 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:48,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:48,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:48,919 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:48,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:48,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1992793973, now seen corresponding path program 69 times [2022-02-10 02:48:48,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:48,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087555492] [2022-02-10 02:48:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:48,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:48,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:48,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087555492] [2022-02-10 02:48:48,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087555492] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:48,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473990896] [2022-02-10 02:48:48,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:48:48,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:48,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:48,969 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:48,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-10 02:48:49,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:48:49,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:49,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:48:49,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:49,078 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:49,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:49,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473990896] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:49,110 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:49,110 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2022-02-10 02:48:49,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274529514] [2022-02-10 02:48:49,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:49,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:48:49,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:49,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:48:49,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:48:49,111 INFO L87 Difference]: Start difference. First operand 201 states and 522 transitions. Second operand has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:49,205 INFO L93 Difference]: Finished difference Result 284 states and 706 transitions. [2022-02-10 02:48:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:48:49,206 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:48:49,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:49,207 INFO L225 Difference]: With dead ends: 284 [2022-02-10 02:48:49,207 INFO L226 Difference]: Without dead ends: 278 [2022-02-10 02:48:49,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:48:49,207 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 61 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:49,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 58 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:48:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-02-10 02:48:49,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 198. [2022-02-10 02:48:49,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.6294416243654823) internal successors, (518), 197 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:49,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 518 transitions. [2022-02-10 02:48:49,211 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 518 transitions. Word has length 20 [2022-02-10 02:48:49,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:49,211 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 518 transitions. [2022-02-10 02:48:49,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:49,212 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 518 transitions. [2022-02-10 02:48:49,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:48:49,212 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:49,212 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:49,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-02-10 02:48:49,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:49,419 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:49,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:49,420 INFO L85 PathProgramCache]: Analyzing trace with hash -354384049, now seen corresponding path program 70 times [2022-02-10 02:48:49,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:49,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680385265] [2022-02-10 02:48:49,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:49,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:49,480 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:49,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:49,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680385265] [2022-02-10 02:48:49,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680385265] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:49,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937934454] [2022-02-10 02:48:49,480 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:48:49,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:49,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:49,481 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:49,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-10 02:48:49,504 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:48:49,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:49,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:48:49,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:49,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:49,601 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:49,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937934454] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:49,602 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:49,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2022-02-10 02:48:49,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758069089] [2022-02-10 02:48:49,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:49,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:48:49,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:49,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:48:49,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:48:49,603 INFO L87 Difference]: Start difference. First operand 198 states and 518 transitions. Second operand has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:49,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:49,688 INFO L93 Difference]: Finished difference Result 298 states and 744 transitions. [2022-02-10 02:48:49,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:48:49,689 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:48:49,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:49,690 INFO L225 Difference]: With dead ends: 298 [2022-02-10 02:48:49,690 INFO L226 Difference]: Without dead ends: 298 [2022-02-10 02:48:49,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:48:49,690 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 62 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:49,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 52 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:49,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-02-10 02:48:49,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 207. [2022-02-10 02:48:49,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 2.6359223300970873) internal successors, (543), 206 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:49,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 543 transitions. [2022-02-10 02:48:49,695 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 543 transitions. Word has length 20 [2022-02-10 02:48:49,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:49,695 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 543 transitions. [2022-02-10 02:48:49,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:49,695 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 543 transitions. [2022-02-10 02:48:49,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:48:49,696 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:49,696 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:49,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:49,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:49,913 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:49,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:49,914 INFO L85 PathProgramCache]: Analyzing trace with hash -276351089, now seen corresponding path program 71 times [2022-02-10 02:48:49,914 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:49,914 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995229897] [2022-02-10 02:48:49,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:49,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:49,957 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:49,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995229897] [2022-02-10 02:48:49,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995229897] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:49,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208063708] [2022-02-10 02:48:49,957 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:48:49,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:49,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:49,958 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:49,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-10 02:48:49,981 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:48:49,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:49,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:48:49,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:50,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:50,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208063708] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:50,088 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:50,088 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:48:50,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788973314] [2022-02-10 02:48:50,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:50,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:48:50,088 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:50,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:48:50,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:48:50,089 INFO L87 Difference]: Start difference. First operand 207 states and 543 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:50,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:50,402 INFO L93 Difference]: Finished difference Result 443 states and 1046 transitions. [2022-02-10 02:48:50,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-10 02:48:50,402 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:48:50,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:50,404 INFO L225 Difference]: With dead ends: 443 [2022-02-10 02:48:50,404 INFO L226 Difference]: Without dead ends: 440 [2022-02-10 02:48:50,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=424, Invalid=836, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:48:50,404 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 128 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:50,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 84 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:50,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-02-10 02:48:50,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 288. [2022-02-10 02:48:50,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 2.8501742160278747) internal successors, (818), 287 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:50,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 818 transitions. [2022-02-10 02:48:50,410 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 818 transitions. Word has length 20 [2022-02-10 02:48:50,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:50,410 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 818 transitions. [2022-02-10 02:48:50,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:50,410 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 818 transitions. [2022-02-10 02:48:50,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:48:50,411 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:50,411 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:50,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-02-10 02:48:50,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-02-10 02:48:50,613 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:50,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:50,614 INFO L85 PathProgramCache]: Analyzing trace with hash 2024151051, now seen corresponding path program 72 times [2022-02-10 02:48:50,614 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:50,614 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909631101] [2022-02-10 02:48:50,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:50,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:50,658 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:50,658 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:50,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909631101] [2022-02-10 02:48:50,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909631101] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:50,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161175224] [2022-02-10 02:48:50,658 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:50,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:50,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:50,659 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:50,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-10 02:48:50,683 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:48:50,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:50,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:48:50,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:50,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:50,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161175224] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:50,792 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:50,792 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:48:50,792 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779066842] [2022-02-10 02:48:50,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:50,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:48:50,792 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:50,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:48:50,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:48:50,793 INFO L87 Difference]: Start difference. First operand 288 states and 818 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:51,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:51,140 INFO L93 Difference]: Finished difference Result 411 states and 988 transitions. [2022-02-10 02:48:51,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 02:48:51,140 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:48:51,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:51,142 INFO L225 Difference]: With dead ends: 411 [2022-02-10 02:48:51,142 INFO L226 Difference]: Without dead ends: 407 [2022-02-10 02:48:51,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=390, Invalid=942, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:48:51,143 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 101 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:51,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 118 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:51,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-02-10 02:48:51,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 245. [2022-02-10 02:48:51,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 2.709016393442623) internal successors, (661), 244 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:51,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 661 transitions. [2022-02-10 02:48:51,148 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 661 transitions. Word has length 20 [2022-02-10 02:48:51,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:51,148 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 661 transitions. [2022-02-10 02:48:51,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:51,149 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 661 transitions. [2022-02-10 02:48:51,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:48:51,149 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:51,149 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:51,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:51,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:51,363 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:51,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:51,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1636467829, now seen corresponding path program 73 times [2022-02-10 02:48:51,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:51,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297530836] [2022-02-10 02:48:51,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:51,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:51,419 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:51,420 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:51,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297530836] [2022-02-10 02:48:51,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297530836] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:51,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518864004] [2022-02-10 02:48:51,420 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:48:51,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:51,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:51,421 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:51,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-10 02:48:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:51,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:48:51,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:51,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:51,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518864004] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:51,576 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:51,576 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:48:51,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41013547] [2022-02-10 02:48:51,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:51,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:48:51,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:51,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:48:51,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:48:51,577 INFO L87 Difference]: Start difference. First operand 245 states and 661 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:51,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:51,905 INFO L93 Difference]: Finished difference Result 445 states and 989 transitions. [2022-02-10 02:48:51,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 02:48:51,905 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:48:51,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:51,907 INFO L225 Difference]: With dead ends: 445 [2022-02-10 02:48:51,907 INFO L226 Difference]: Without dead ends: 445 [2022-02-10 02:48:51,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=432, Invalid=758, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:48:51,908 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 117 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:51,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 126 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:51,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-02-10 02:48:51,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 252. [2022-02-10 02:48:51,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 2.729083665338645) internal successors, (685), 251 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 685 transitions. [2022-02-10 02:48:51,914 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 685 transitions. Word has length 20 [2022-02-10 02:48:51,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:51,914 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 685 transitions. [2022-02-10 02:48:51,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:51,914 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 685 transitions. [2022-02-10 02:48:51,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:48:51,914 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:51,915 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:51,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:52,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:52,115 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:52,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:52,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1441648045, now seen corresponding path program 74 times [2022-02-10 02:48:52,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:52,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179856151] [2022-02-10 02:48:52,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:52,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:52,170 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:52,171 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:52,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179856151] [2022-02-10 02:48:52,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179856151] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:52,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914127253] [2022-02-10 02:48:52,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:52,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:52,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:52,172 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:52,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-10 02:48:52,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:52,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:52,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:48:52,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:52,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:52,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914127253] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:52,304 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:52,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:48:52,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813663951] [2022-02-10 02:48:52,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:52,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:48:52,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:52,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:48:52,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:48:52,305 INFO L87 Difference]: Start difference. First operand 252 states and 685 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:52,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:52,651 INFO L93 Difference]: Finished difference Result 342 states and 799 transitions. [2022-02-10 02:48:52,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-10 02:48:52,652 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:48:52,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:52,653 INFO L225 Difference]: With dead ends: 342 [2022-02-10 02:48:52,653 INFO L226 Difference]: Without dead ends: 340 [2022-02-10 02:48:52,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=781, Invalid=1475, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 02:48:52,653 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 106 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:52,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 97 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:52,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-02-10 02:48:52,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 242. [2022-02-10 02:48:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 2.6970954356846475) internal successors, (650), 241 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 650 transitions. [2022-02-10 02:48:52,658 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 650 transitions. Word has length 20 [2022-02-10 02:48:52,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:52,658 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 650 transitions. [2022-02-10 02:48:52,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:52,658 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 650 transitions. [2022-02-10 02:48:52,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:48:52,658 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:52,658 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:52,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-02-10 02:48:52,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-02-10 02:48:52,859 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:52,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:52,859 INFO L85 PathProgramCache]: Analyzing trace with hash 325273359, now seen corresponding path program 75 times [2022-02-10 02:48:52,859 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:52,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237730950] [2022-02-10 02:48:52,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:52,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:52,909 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:52,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237730950] [2022-02-10 02:48:52,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237730950] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:52,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184680175] [2022-02-10 02:48:52,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:48:52,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:52,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:52,910 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:52,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-10 02:48:52,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:48:52,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:52,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:48:52,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:53,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:53,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184680175] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:53,038 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:53,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:48:53,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256436812] [2022-02-10 02:48:53,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:53,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:48:53,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:53,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:48:53,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:48:53,039 INFO L87 Difference]: Start difference. First operand 242 states and 650 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:53,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:53,288 INFO L93 Difference]: Finished difference Result 394 states and 932 transitions. [2022-02-10 02:48:53,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-10 02:48:53,288 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:48:53,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:53,290 INFO L225 Difference]: With dead ends: 394 [2022-02-10 02:48:53,290 INFO L226 Difference]: Without dead ends: 390 [2022-02-10 02:48:53,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=320, Invalid=870, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:48:53,290 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 125 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:53,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 92 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:53,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-02-10 02:48:53,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 267. [2022-02-10 02:48:53,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 2.7406015037593985) internal successors, (729), 266 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:53,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 729 transitions. [2022-02-10 02:48:53,296 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 729 transitions. Word has length 20 [2022-02-10 02:48:53,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:53,296 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 729 transitions. [2022-02-10 02:48:53,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:53,296 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 729 transitions. [2022-02-10 02:48:53,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:48:53,297 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:53,297 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:53,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:53,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:53,511 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:53,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:53,512 INFO L85 PathProgramCache]: Analyzing trace with hash -800327541, now seen corresponding path program 76 times [2022-02-10 02:48:53,512 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:53,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061957039] [2022-02-10 02:48:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:53,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:53,557 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:53,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061957039] [2022-02-10 02:48:53,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061957039] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:53,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151865368] [2022-02-10 02:48:53,557 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:48:53,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:53,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:53,558 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:53,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-10 02:48:53,581 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:48:53,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:53,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:48:53,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:53,660 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:53,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:53,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151865368] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:53,692 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:53,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:48:53,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198518176] [2022-02-10 02:48:53,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:53,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:48:53,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:53,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:48:53,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:48:53,692 INFO L87 Difference]: Start difference. First operand 267 states and 729 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:53,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:53,888 INFO L93 Difference]: Finished difference Result 397 states and 990 transitions. [2022-02-10 02:48:53,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 02:48:53,888 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:48:53,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:53,890 INFO L225 Difference]: With dead ends: 397 [2022-02-10 02:48:53,890 INFO L226 Difference]: Without dead ends: 392 [2022-02-10 02:48:53,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:48:53,890 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 61 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:53,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 67 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:53,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-02-10 02:48:53,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 280. [2022-02-10 02:48:53,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 2.706093189964158) internal successors, (755), 279 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:53,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 755 transitions. [2022-02-10 02:48:53,895 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 755 transitions. Word has length 20 [2022-02-10 02:48:53,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:53,895 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 755 transitions. [2022-02-10 02:48:53,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:53,895 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 755 transitions. [2022-02-10 02:48:53,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:48:53,896 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:53,896 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:53,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-02-10 02:48:54,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:54,110 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:54,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:54,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1846630223, now seen corresponding path program 77 times [2022-02-10 02:48:54,110 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:54,110 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297765566] [2022-02-10 02:48:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:54,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:54,162 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:54,162 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:54,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297765566] [2022-02-10 02:48:54,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297765566] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:54,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696439552] [2022-02-10 02:48:54,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:48:54,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:54,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:54,163 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:54,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-10 02:48:54,186 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:48:54,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:54,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:48:54,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:54,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:54,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696439552] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:54,298 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:54,298 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-02-10 02:48:54,298 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516987334] [2022-02-10 02:48:54,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:54,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:48:54,298 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:54,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:48:54,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:48:54,299 INFO L87 Difference]: Start difference. First operand 280 states and 755 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:54,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:54,552 INFO L93 Difference]: Finished difference Result 525 states and 1179 transitions. [2022-02-10 02:48:54,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 02:48:54,552 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:48:54,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:54,554 INFO L225 Difference]: With dead ends: 525 [2022-02-10 02:48:54,554 INFO L226 Difference]: Without dead ends: 521 [2022-02-10 02:48:54,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=431, Invalid=759, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:48:54,554 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 149 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:54,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 91 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:54,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-02-10 02:48:54,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 298. [2022-02-10 02:48:54,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.7205387205387206) internal successors, (808), 297 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:54,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 808 transitions. [2022-02-10 02:48:54,561 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 808 transitions. Word has length 20 [2022-02-10 02:48:54,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:54,562 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 808 transitions. [2022-02-10 02:48:54,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:54,562 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 808 transitions. [2022-02-10 02:48:54,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:48:54,562 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:54,562 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:54,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-02-10 02:48:54,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:54,763 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:54,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:54,763 INFO L85 PathProgramCache]: Analyzing trace with hash 629778801, now seen corresponding path program 78 times [2022-02-10 02:48:54,763 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:54,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845123086] [2022-02-10 02:48:54,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:54,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:48:54,802 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:54,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845123086] [2022-02-10 02:48:54,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845123086] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:54,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046689814] [2022-02-10 02:48:54,803 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:54,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:54,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:54,804 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:54,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-10 02:48:54,827 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:48:54,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:54,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:48:54,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:54,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:48:54,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046689814] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:54,940 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:54,940 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-02-10 02:48:54,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249192075] [2022-02-10 02:48:54,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:54,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:48:54,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:54,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:48:54,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:48:54,940 INFO L87 Difference]: Start difference. First operand 298 states and 808 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:55,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:55,293 INFO L93 Difference]: Finished difference Result 449 states and 1003 transitions. [2022-02-10 02:48:55,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 02:48:55,293 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:48:55,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:55,294 INFO L225 Difference]: With dead ends: 449 [2022-02-10 02:48:55,295 INFO L226 Difference]: Without dead ends: 446 [2022-02-10 02:48:55,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=708, Invalid=1454, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 02:48:55,295 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 151 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:55,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 100 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:55,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-02-10 02:48:55,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 284. [2022-02-10 02:48:55,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 2.674911660777385) internal successors, (757), 283 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 757 transitions. [2022-02-10 02:48:55,301 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 757 transitions. Word has length 20 [2022-02-10 02:48:55,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:55,301 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 757 transitions. [2022-02-10 02:48:55,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 757 transitions. [2022-02-10 02:48:55,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:48:55,302 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:55,302 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:55,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:55,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2022-02-10 02:48:55,507 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:55,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:55,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1167634379, now seen corresponding path program 79 times [2022-02-10 02:48:55,508 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:55,508 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388937762] [2022-02-10 02:48:55,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:55,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:55,555 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:55,556 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:55,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388937762] [2022-02-10 02:48:55,556 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388937762] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:55,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935851918] [2022-02-10 02:48:55,556 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:48:55,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:55,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:55,557 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:55,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-10 02:48:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:55,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:48:55,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:55,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:55,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935851918] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:55,708 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:55,708 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-02-10 02:48:55,708 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089730931] [2022-02-10 02:48:55,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:55,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:48:55,708 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:55,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:48:55,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:48:55,710 INFO L87 Difference]: Start difference. First operand 284 states and 757 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:56,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:56,136 INFO L93 Difference]: Finished difference Result 404 states and 921 transitions. [2022-02-10 02:48:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-10 02:48:56,136 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:48:56,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:56,137 INFO L225 Difference]: With dead ends: 404 [2022-02-10 02:48:56,137 INFO L226 Difference]: Without dead ends: 400 [2022-02-10 02:48:56,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=776, Invalid=1674, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 02:48:56,138 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 88 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:56,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 86 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:56,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-02-10 02:48:56,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 284. [2022-02-10 02:48:56,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 2.6678445229681977) internal successors, (755), 283 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:56,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 755 transitions. [2022-02-10 02:48:56,143 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 755 transitions. Word has length 20 [2022-02-10 02:48:56,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:56,143 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 755 transitions. [2022-02-10 02:48:56,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:56,143 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 755 transitions. [2022-02-10 02:48:56,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:48:56,144 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:56,144 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:56,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-02-10 02:48:56,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:56,366 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:56,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:56,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1846479861, now seen corresponding path program 80 times [2022-02-10 02:48:56,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:56,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192598153] [2022-02-10 02:48:56,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:56,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:56,403 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:56,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192598153] [2022-02-10 02:48:56,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192598153] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:56,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907759447] [2022-02-10 02:48:56,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:56,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:56,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:56,404 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:56,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-10 02:48:56,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:56,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:56,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:48:56,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:56,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:56,551 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:56,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907759447] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:56,552 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:56,552 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 16 [2022-02-10 02:48:56,552 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150443105] [2022-02-10 02:48:56,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:56,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:48:56,552 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:56,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:48:56,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:48:56,553 INFO L87 Difference]: Start difference. First operand 284 states and 755 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:56,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:56,776 INFO L93 Difference]: Finished difference Result 548 states and 1253 transitions. [2022-02-10 02:48:56,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 02:48:56,776 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:48:56,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:56,778 INFO L225 Difference]: With dead ends: 548 [2022-02-10 02:48:56,778 INFO L226 Difference]: Without dead ends: 543 [2022-02-10 02:48:56,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=359, Invalid=633, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:48:56,778 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 150 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:56,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 78 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:56,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-02-10 02:48:56,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 318. [2022-02-10 02:48:56,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 2.7097791798107256) internal successors, (859), 317 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:56,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 859 transitions. [2022-02-10 02:48:56,786 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 859 transitions. Word has length 20 [2022-02-10 02:48:56,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:56,786 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 859 transitions. [2022-02-10 02:48:56,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:56,786 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 859 transitions. [2022-02-10 02:48:56,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:48:56,787 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:56,787 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:56,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-02-10 02:48:57,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:57,003 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:57,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:57,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1231636013, now seen corresponding path program 81 times [2022-02-10 02:48:57,004 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:57,004 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778983869] [2022-02-10 02:48:57,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:57,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:48:57,048 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:57,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778983869] [2022-02-10 02:48:57,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778983869] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:57,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969821900] [2022-02-10 02:48:57,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:48:57,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:57,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:57,050 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:57,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-10 02:48:57,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:48:57,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:57,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:48:57,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:57,168 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:57,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:57,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:48:57,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969821900] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:57,198 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:57,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 16 [2022-02-10 02:48:57,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315096806] [2022-02-10 02:48:57,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:57,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:48:57,199 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:57,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:48:57,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:48:57,199 INFO L87 Difference]: Start difference. First operand 318 states and 859 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:57,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:57,566 INFO L93 Difference]: Finished difference Result 483 states and 1104 transitions. [2022-02-10 02:48:57,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-10 02:48:57,566 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:48:57,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:57,568 INFO L225 Difference]: With dead ends: 483 [2022-02-10 02:48:57,568 INFO L226 Difference]: Without dead ends: 480 [2022-02-10 02:48:57,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=718, Invalid=1538, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 02:48:57,568 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 127 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:57,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 85 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:57,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-02-10 02:48:57,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 301. [2022-02-10 02:48:57,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 2.66) internal successors, (798), 300 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:57,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 798 transitions. [2022-02-10 02:48:57,573 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 798 transitions. Word has length 20 [2022-02-10 02:48:57,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:57,573 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 798 transitions. [2022-02-10 02:48:57,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:57,573 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 798 transitions. [2022-02-10 02:48:57,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:48:57,574 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:57,574 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:57,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-02-10 02:48:57,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2022-02-10 02:48:57,775 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:57,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:57,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1769491591, now seen corresponding path program 82 times [2022-02-10 02:48:57,775 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:57,775 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342990377] [2022-02-10 02:48:57,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:57,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:57,826 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:48:57,826 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:57,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342990377] [2022-02-10 02:48:57,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342990377] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:57,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027005731] [2022-02-10 02:48:57,827 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:48:57,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:57,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:57,828 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:57,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-10 02:48:57,857 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:48:57,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:57,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:48:57,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:57,963 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:57,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:48:58,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027005731] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:58,002 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:58,002 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 17 [2022-02-10 02:48:58,002 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78652498] [2022-02-10 02:48:58,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:58,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:48:58,002 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:58,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:48:58,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:48:58,003 INFO L87 Difference]: Start difference. First operand 301 states and 798 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:58,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:58,413 INFO L93 Difference]: Finished difference Result 476 states and 1079 transitions. [2022-02-10 02:48:58,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 02:48:58,413 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:48:58,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:58,415 INFO L225 Difference]: With dead ends: 476 [2022-02-10 02:48:58,415 INFO L226 Difference]: Without dead ends: 472 [2022-02-10 02:48:58,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=705, Invalid=1647, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 02:48:58,415 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 124 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:58,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 92 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:58,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-02-10 02:48:58,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 293. [2022-02-10 02:48:58,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 2.654109589041096) internal successors, (775), 292 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 775 transitions. [2022-02-10 02:48:58,420 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 775 transitions. Word has length 20 [2022-02-10 02:48:58,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:58,420 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 775 transitions. [2022-02-10 02:48:58,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:58,420 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 775 transitions. [2022-02-10 02:48:58,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:48:58,420 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:58,421 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:58,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-02-10 02:48:58,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:58,621 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:58,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:58,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1263145325, now seen corresponding path program 83 times [2022-02-10 02:48:58,621 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:58,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830294001] [2022-02-10 02:48:58,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:58,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:58,672 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:58,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830294001] [2022-02-10 02:48:58,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830294001] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:58,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309482106] [2022-02-10 02:48:58,672 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:48:58,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:58,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:58,673 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:58,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-10 02:48:58,701 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:48:58,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:58,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:48:58,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:58,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:58,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309482106] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:58,822 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:58,822 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2022-02-10 02:48:58,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811002853] [2022-02-10 02:48:58,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:58,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 02:48:58,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:58,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 02:48:58,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:48:58,823 INFO L87 Difference]: Start difference. First operand 293 states and 775 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:59,184 INFO L93 Difference]: Finished difference Result 434 states and 997 transitions. [2022-02-10 02:48:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 02:48:59,184 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:48:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:59,185 INFO L225 Difference]: With dead ends: 434 [2022-02-10 02:48:59,185 INFO L226 Difference]: Without dead ends: 428 [2022-02-10 02:48:59,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=746, Invalid=1804, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 02:48:59,186 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 75 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:59,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 89 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:59,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-02-10 02:48:59,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 296. [2022-02-10 02:48:59,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 2.6338983050847458) internal successors, (777), 295 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:59,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 777 transitions. [2022-02-10 02:48:59,192 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 777 transitions. Word has length 20 [2022-02-10 02:48:59,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:59,192 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 777 transitions. [2022-02-10 02:48:59,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:59,192 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 777 transitions. [2022-02-10 02:48:59,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:48:59,193 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:59,193 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:59,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-02-10 02:48:59,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:59,393 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:59,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:59,394 INFO L85 PathProgramCache]: Analyzing trace with hash -368775473, now seen corresponding path program 84 times [2022-02-10 02:48:59,394 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:59,394 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617642910] [2022-02-10 02:48:59,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:59,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:59,427 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:59,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617642910] [2022-02-10 02:48:59,427 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617642910] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:59,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453633519] [2022-02-10 02:48:59,427 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:59,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:59,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:59,428 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:59,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-10 02:48:59,453 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:48:59,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:59,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:48:59,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:59,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:59,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453633519] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:59,575 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:59,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 16 [2022-02-10 02:48:59,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654769698] [2022-02-10 02:48:59,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:59,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:48:59,576 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:59,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:48:59,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:48:59,576 INFO L87 Difference]: Start difference. First operand 296 states and 777 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:59,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:59,802 INFO L93 Difference]: Finished difference Result 686 states and 1626 transitions. [2022-02-10 02:48:59,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 02:48:59,803 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:48:59,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:59,804 INFO L225 Difference]: With dead ends: 686 [2022-02-10 02:48:59,804 INFO L226 Difference]: Without dead ends: 684 [2022-02-10 02:48:59,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:48:59,805 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 129 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:59,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 126 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:59,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-02-10 02:48:59,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 416. [2022-02-10 02:48:59,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 2.816867469879518) internal successors, (1169), 415 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1169 transitions. [2022-02-10 02:48:59,811 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1169 transitions. Word has length 20 [2022-02-10 02:48:59,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:59,812 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 1169 transitions. [2022-02-10 02:48:59,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1169 transitions. [2022-02-10 02:48:59,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:48:59,812 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:59,812 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:59,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:00,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-02-10 02:49:00,013 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:00,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:00,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1585626895, now seen corresponding path program 85 times [2022-02-10 02:49:00,013 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:00,013 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637764801] [2022-02-10 02:49:00,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:00,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:00,050 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:00,050 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:00,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637764801] [2022-02-10 02:49:00,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637764801] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:00,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356701688] [2022-02-10 02:49:00,050 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:00,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:00,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:00,052 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:00,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-10 02:49:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:00,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:49:00,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:00,172 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:00,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:00,202 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:00,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356701688] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:00,202 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:00,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 16 [2022-02-10 02:49:00,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500399153] [2022-02-10 02:49:00,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:00,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:49:00,203 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:00,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:49:00,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:49:00,203 INFO L87 Difference]: Start difference. First operand 416 states and 1169 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:00,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:00,616 INFO L93 Difference]: Finished difference Result 611 states and 1465 transitions. [2022-02-10 02:49:00,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-10 02:49:00,616 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:49:00,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:00,618 INFO L225 Difference]: With dead ends: 611 [2022-02-10 02:49:00,618 INFO L226 Difference]: Without dead ends: 609 [2022-02-10 02:49:00,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=785, Invalid=1765, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 02:49:00,618 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 124 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:00,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 99 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:00,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-02-10 02:49:00,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 413. [2022-02-10 02:49:00,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 2.8058252427184467) internal successors, (1156), 412 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:00,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1156 transitions. [2022-02-10 02:49:00,625 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1156 transitions. Word has length 20 [2022-02-10 02:49:00,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:00,625 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 1156 transitions. [2022-02-10 02:49:00,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:00,625 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1156 transitions. [2022-02-10 02:49:00,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:49:00,626 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:00,626 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:00,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:00,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:00,835 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:00,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:00,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1047771317, now seen corresponding path program 86 times [2022-02-10 02:49:00,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:00,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958955076] [2022-02-10 02:49:00,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:00,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:00,874 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:00,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958955076] [2022-02-10 02:49:00,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958955076] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:00,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775444265] [2022-02-10 02:49:00,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:00,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:00,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:00,875 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:00,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-10 02:49:00,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:00,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:00,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:49:00,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:00,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:01,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775444265] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:01,026 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:01,026 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 17 [2022-02-10 02:49:01,026 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111727267] [2022-02-10 02:49:01,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:01,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:49:01,026 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:01,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:49:01,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:49:01,026 INFO L87 Difference]: Start difference. First operand 413 states and 1156 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:01,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:01,424 INFO L93 Difference]: Finished difference Result 652 states and 1612 transitions. [2022-02-10 02:49:01,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-10 02:49:01,424 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:49:01,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:01,426 INFO L225 Difference]: With dead ends: 652 [2022-02-10 02:49:01,426 INFO L226 Difference]: Without dead ends: 648 [2022-02-10 02:49:01,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=713, Invalid=1737, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 02:49:01,427 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 136 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:01,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 103 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:01,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-02-10 02:49:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 454. [2022-02-10 02:49:01,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 2.8741721854304636) internal successors, (1302), 453 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:01,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 1302 transitions. [2022-02-10 02:49:01,435 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 1302 transitions. Word has length 20 [2022-02-10 02:49:01,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:01,435 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 1302 transitions. [2022-02-10 02:49:01,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:01,436 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 1302 transitions. [2022-02-10 02:49:01,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:49:01,436 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:01,436 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:01,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-02-10 02:49:01,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:01,637 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:01,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:01,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1554117583, now seen corresponding path program 87 times [2022-02-10 02:49:01,637 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:01,637 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91766406] [2022-02-10 02:49:01,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:01,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:01,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:01,689 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:01,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91766406] [2022-02-10 02:49:01,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91766406] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:01,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193640080] [2022-02-10 02:49:01,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:01,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:01,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:01,691 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:01,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-10 02:49:01,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:49:01,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:01,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:49:01,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:01,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:01,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193640080] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:01,878 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:01,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 18 [2022-02-10 02:49:01,879 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695753036] [2022-02-10 02:49:01,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:01,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 02:49:01,879 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:01,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 02:49:01,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:49:01,879 INFO L87 Difference]: Start difference. First operand 454 states and 1302 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:02,322 INFO L93 Difference]: Finished difference Result 669 states and 1672 transitions. [2022-02-10 02:49:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 02:49:02,323 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:49:02,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:02,325 INFO L225 Difference]: With dead ends: 669 [2022-02-10 02:49:02,325 INFO L226 Difference]: Without dead ends: 663 [2022-02-10 02:49:02,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=677, Invalid=1773, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 02:49:02,326 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 120 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:02,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 96 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:02,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-02-10 02:49:02,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 470. [2022-02-10 02:49:02,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 2.8976545842217485) internal successors, (1359), 469 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:02,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1359 transitions. [2022-02-10 02:49:02,334 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1359 transitions. Word has length 20 [2022-02-10 02:49:02,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:02,334 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 1359 transitions. [2022-02-10 02:49:02,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:02,335 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1359 transitions. [2022-02-10 02:49:02,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 02:49:02,335 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:02,335 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:02,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:02,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:02,536 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:02,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:02,536 INFO L85 PathProgramCache]: Analyzing trace with hash -70982645, now seen corresponding path program 88 times [2022-02-10 02:49:02,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:02,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416802406] [2022-02-10 02:49:02,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:02,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:02,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:02,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416802406] [2022-02-10 02:49:02,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416802406] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:02,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892838015] [2022-02-10 02:49:02,583 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:02,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:02,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:02,584 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:02,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-10 02:49:02,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:02,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:02,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:49:02,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:02,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:02,736 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:02,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892838015] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:02,737 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:02,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2022-02-10 02:49:02,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362729721] [2022-02-10 02:49:02,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:02,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:49:02,737 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:02,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:49:02,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:49:02,737 INFO L87 Difference]: Start difference. First operand 470 states and 1359 transitions. Second operand has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:03,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:03,111 INFO L93 Difference]: Finished difference Result 642 states and 1638 transitions. [2022-02-10 02:49:03,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 02:49:03,111 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 02:49:03,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:03,113 INFO L225 Difference]: With dead ends: 642 [2022-02-10 02:49:03,113 INFO L226 Difference]: Without dead ends: 634 [2022-02-10 02:49:03,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=694, Invalid=1856, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 02:49:03,113 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 105 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:03,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 85 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:03,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-02-10 02:49:03,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 469. [2022-02-10 02:49:03,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 2.8952991452991452) internal successors, (1355), 468 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1355 transitions. [2022-02-10 02:49:03,120 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1355 transitions. Word has length 20 [2022-02-10 02:49:03,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:03,120 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 1355 transitions. [2022-02-10 02:49:03,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:03,121 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1355 transitions. [2022-02-10 02:49:03,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:03,121 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:03,121 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:03,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-02-10 02:49:03,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2022-02-10 02:49:03,322 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:03,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:03,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1570356373, now seen corresponding path program 89 times [2022-02-10 02:49:03,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:03,323 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5771395] [2022-02-10 02:49:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:03,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:03,495 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:03,495 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5771395] [2022-02-10 02:49:03,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5771395] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:03,495 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042270327] [2022-02-10 02:49:03,495 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:03,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:03,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:03,500 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:03,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-10 02:49:03,527 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:49:03,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:03,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:03,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:03,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:04,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042270327] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:04,058 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:04,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 21 [2022-02-10 02:49:04,058 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747804420] [2022-02-10 02:49:04,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:04,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:49:04,058 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:04,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:49:04,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:49:04,059 INFO L87 Difference]: Start difference. First operand 469 states and 1355 transitions. Second operand has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:04,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:04,511 INFO L93 Difference]: Finished difference Result 585 states and 1483 transitions. [2022-02-10 02:49:04,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:49:04,512 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:04,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:04,513 INFO L225 Difference]: With dead ends: 585 [2022-02-10 02:49:04,513 INFO L226 Difference]: Without dead ends: 571 [2022-02-10 02:49:04,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:49:04,514 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 91 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:04,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 392 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:04,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-02-10 02:49:04,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 484. [2022-02-10 02:49:04,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 2.846790890269151) internal successors, (1375), 483 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1375 transitions. [2022-02-10 02:49:04,521 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1375 transitions. Word has length 21 [2022-02-10 02:49:04,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:04,521 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1375 transitions. [2022-02-10 02:49:04,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:04,521 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1375 transitions. [2022-02-10 02:49:04,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:04,522 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:04,522 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:04,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-02-10 02:49:04,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:04,722 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:04,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:04,723 INFO L85 PathProgramCache]: Analyzing trace with hash 146086511, now seen corresponding path program 90 times [2022-02-10 02:49:04,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:04,723 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312866427] [2022-02-10 02:49:04,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:04,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:04,870 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:04,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312866427] [2022-02-10 02:49:04,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312866427] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:04,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790887799] [2022-02-10 02:49:04,870 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:04,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:04,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:04,872 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:04,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-10 02:49:04,899 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:49:04,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:04,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:04,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:05,094 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:05,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:05,378 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:05,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790887799] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:05,378 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:05,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2022-02-10 02:49:05,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276572847] [2022-02-10 02:49:05,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:05,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:49:05,378 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:05,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:49:05,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:05,379 INFO L87 Difference]: Start difference. First operand 484 states and 1375 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:05,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:05,722 INFO L93 Difference]: Finished difference Result 616 states and 1557 transitions. [2022-02-10 02:49:05,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:49:05,723 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:05,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:05,724 INFO L225 Difference]: With dead ends: 616 [2022-02-10 02:49:05,724 INFO L226 Difference]: Without dead ends: 612 [2022-02-10 02:49:05,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:49:05,725 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 129 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:05,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 498 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:05,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-02-10 02:49:05,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 504. [2022-02-10 02:49:05,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 2.8707753479125246) internal successors, (1444), 503 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:05,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1444 transitions. [2022-02-10 02:49:05,732 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1444 transitions. Word has length 21 [2022-02-10 02:49:05,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:05,732 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 1444 transitions. [2022-02-10 02:49:05,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:05,732 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1444 transitions. [2022-02-10 02:49:05,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:05,733 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:05,733 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:05,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-02-10 02:49:05,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:05,934 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:05,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:05,934 INFO L85 PathProgramCache]: Analyzing trace with hash 990094891, now seen corresponding path program 91 times [2022-02-10 02:49:05,934 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:05,934 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351668977] [2022-02-10 02:49:05,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:05,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:06,054 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:06,055 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:06,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351668977] [2022-02-10 02:49:06,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351668977] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:06,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061059997] [2022-02-10 02:49:06,055 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:06,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:06,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:06,056 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:06,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-10 02:49:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:06,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:06,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:06,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:06,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061059997] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:06,574 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:06,574 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2022-02-10 02:49:06,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633692103] [2022-02-10 02:49:06,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:06,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:49:06,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:06,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:49:06,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:06,575 INFO L87 Difference]: Start difference. First operand 504 states and 1444 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:06,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:06,892 INFO L93 Difference]: Finished difference Result 607 states and 1548 transitions. [2022-02-10 02:49:06,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:49:06,892 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:06,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:06,894 INFO L225 Difference]: With dead ends: 607 [2022-02-10 02:49:06,894 INFO L226 Difference]: Without dead ends: 596 [2022-02-10 02:49:06,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:49:06,894 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 137 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:06,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 416 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:06,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-02-10 02:49:06,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 492. [2022-02-10 02:49:06,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 2.8574338085539717) internal successors, (1403), 491 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1403 transitions. [2022-02-10 02:49:06,901 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1403 transitions. Word has length 21 [2022-02-10 02:49:06,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:06,902 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1403 transitions. [2022-02-10 02:49:06,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1403 transitions. [2022-02-10 02:49:06,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:06,903 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:06,903 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:06,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:07,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:07,123 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:07,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:07,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1848378645, now seen corresponding path program 92 times [2022-02-10 02:49:07,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:07,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167152041] [2022-02-10 02:49:07,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:07,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:07,273 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:07,273 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:07,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167152041] [2022-02-10 02:49:07,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167152041] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:07,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995157631] [2022-02-10 02:49:07,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:07,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:07,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:07,275 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:07,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-10 02:49:07,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:07,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:07,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:07,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:07,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:07,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995157631] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:07,888 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:07,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-02-10 02:49:07,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958143193] [2022-02-10 02:49:07,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:07,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:49:07,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:07,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:49:07,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:49:07,889 INFO L87 Difference]: Start difference. First operand 492 states and 1403 transitions. Second operand has 25 states, 25 states have (on average 1.72) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:08,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:08,302 INFO L93 Difference]: Finished difference Result 597 states and 1510 transitions. [2022-02-10 02:49:08,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:49:08,303 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:08,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:08,304 INFO L225 Difference]: With dead ends: 597 [2022-02-10 02:49:08,304 INFO L226 Difference]: Without dead ends: 593 [2022-02-10 02:49:08,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:49:08,305 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 108 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:08,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 401 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:08,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-02-10 02:49:08,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 492. [2022-02-10 02:49:08,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 2.8574338085539717) internal successors, (1403), 491 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1403 transitions. [2022-02-10 02:49:08,327 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1403 transitions. Word has length 21 [2022-02-10 02:49:08,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:08,328 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1403 transitions. [2022-02-10 02:49:08,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1403 transitions. [2022-02-10 02:49:08,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:08,329 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:08,329 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:08,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:08,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:08,547 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:08,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:08,548 INFO L85 PathProgramCache]: Analyzing trace with hash 747710959, now seen corresponding path program 93 times [2022-02-10 02:49:08,548 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:08,548 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500827512] [2022-02-10 02:49:08,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:08,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:08,690 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:08,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500827512] [2022-02-10 02:49:08,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500827512] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:08,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772120711] [2022-02-10 02:49:08,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:08,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:08,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:08,692 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:08,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-10 02:49:08,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:49:08,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:08,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:08,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:08,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:09,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772120711] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:09,175 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:09,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-02-10 02:49:09,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2367060] [2022-02-10 02:49:09,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:09,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:49:09,175 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:09,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:49:09,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:49:09,175 INFO L87 Difference]: Start difference. First operand 492 states and 1403 transitions. Second operand has 24 states, 24 states have (on average 1.75) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:09,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:09,532 INFO L93 Difference]: Finished difference Result 600 states and 1512 transitions. [2022-02-10 02:49:09,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:49:09,532 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:09,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:09,533 INFO L225 Difference]: With dead ends: 600 [2022-02-10 02:49:09,533 INFO L226 Difference]: Without dead ends: 596 [2022-02-10 02:49:09,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:49:09,534 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 155 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:09,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 352 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:09,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-02-10 02:49:09,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 492. [2022-02-10 02:49:09,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 2.8574338085539717) internal successors, (1403), 491 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:09,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1403 transitions. [2022-02-10 02:49:09,541 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1403 transitions. Word has length 21 [2022-02-10 02:49:09,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:09,541 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1403 transitions. [2022-02-10 02:49:09,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:09,542 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1403 transitions. [2022-02-10 02:49:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:09,542 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:09,542 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:09,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-02-10 02:49:09,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-02-10 02:49:09,743 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:09,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:09,743 INFO L85 PathProgramCache]: Analyzing trace with hash -377889941, now seen corresponding path program 94 times [2022-02-10 02:49:09,743 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:09,743 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619755790] [2022-02-10 02:49:09,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:09,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:09,879 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:09,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619755790] [2022-02-10 02:49:09,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619755790] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:09,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039829620] [2022-02-10 02:49:09,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:09,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:09,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:09,880 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:09,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-10 02:49:09,903 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:09,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:09,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:09,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:10,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:10,363 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:10,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039829620] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:10,363 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:10,363 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2022-02-10 02:49:10,363 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464331910] [2022-02-10 02:49:10,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:10,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:49:10,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:10,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:49:10,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:10,364 INFO L87 Difference]: Start difference. First operand 492 states and 1403 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:10,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:10,695 INFO L93 Difference]: Finished difference Result 573 states and 1484 transitions. [2022-02-10 02:49:10,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:49:10,695 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:10,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:10,696 INFO L225 Difference]: With dead ends: 573 [2022-02-10 02:49:10,696 INFO L226 Difference]: Without dead ends: 569 [2022-02-10 02:49:10,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:49:10,697 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 123 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:10,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 271 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:10,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-02-10 02:49:10,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 493. [2022-02-10 02:49:10,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 2.8536585365853657) internal successors, (1404), 492 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:10,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 1404 transitions. [2022-02-10 02:49:10,704 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 1404 transitions. Word has length 21 [2022-02-10 02:49:10,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:10,704 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 1404 transitions. [2022-02-10 02:49:10,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:10,704 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 1404 transitions. [2022-02-10 02:49:10,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:10,705 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:10,705 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:10,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-02-10 02:49:10,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-02-10 02:49:10,907 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:10,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:10,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1483013803, now seen corresponding path program 95 times [2022-02-10 02:49:10,907 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:10,907 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394453649] [2022-02-10 02:49:10,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:10,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:11,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:11,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394453649] [2022-02-10 02:49:11,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394453649] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:11,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899399933] [2022-02-10 02:49:11,066 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:11,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:11,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:11,068 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:11,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-10 02:49:11,097 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:49:11,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:11,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:11,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:11,356 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:11,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:11,658 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:11,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899399933] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:11,658 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:11,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 26 [2022-02-10 02:49:11,658 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043362718] [2022-02-10 02:49:11,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:11,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:49:11,658 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:11,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:49:11,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:11,659 INFO L87 Difference]: Start difference. First operand 493 states and 1404 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:11,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:11,929 INFO L93 Difference]: Finished difference Result 569 states and 1507 transitions. [2022-02-10 02:49:11,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:49:11,929 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:11,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:11,930 INFO L225 Difference]: With dead ends: 569 [2022-02-10 02:49:11,930 INFO L226 Difference]: Without dead ends: 565 [2022-02-10 02:49:11,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:49:11,930 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 87 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:11,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 377 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:11,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-02-10 02:49:11,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 500. [2022-02-10 02:49:11,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 2.8637274549098195) internal successors, (1429), 499 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1429 transitions. [2022-02-10 02:49:11,937 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1429 transitions. Word has length 21 [2022-02-10 02:49:11,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:11,938 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 1429 transitions. [2022-02-10 02:49:11,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:11,938 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1429 transitions. [2022-02-10 02:49:11,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:11,938 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:11,938 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:11,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-02-10 02:49:12,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-02-10 02:49:12,139 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:12,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:12,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1967945113, now seen corresponding path program 96 times [2022-02-10 02:49:12,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:12,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995805208] [2022-02-10 02:49:12,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:12,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:12,259 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:12,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:12,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995805208] [2022-02-10 02:49:12,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995805208] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:12,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337584865] [2022-02-10 02:49:12,260 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:12,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:12,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:12,261 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:12,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-10 02:49:12,284 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:49:12,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:12,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:12,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:12,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:12,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337584865] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:12,776 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:12,776 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 26 [2022-02-10 02:49:12,776 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786746587] [2022-02-10 02:49:12,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:12,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:49:12,776 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:12,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:49:12,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:12,776 INFO L87 Difference]: Start difference. First operand 500 states and 1429 transitions. Second operand has 27 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:13,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:13,016 INFO L93 Difference]: Finished difference Result 569 states and 1507 transitions. [2022-02-10 02:49:13,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:49:13,017 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:13,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:13,018 INFO L225 Difference]: With dead ends: 569 [2022-02-10 02:49:13,018 INFO L226 Difference]: Without dead ends: 564 [2022-02-10 02:49:13,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:49:13,018 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 118 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:13,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 368 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:13,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-02-10 02:49:13,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 500. [2022-02-10 02:49:13,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 2.8637274549098195) internal successors, (1429), 499 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:13,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1429 transitions. [2022-02-10 02:49:13,024 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1429 transitions. Word has length 21 [2022-02-10 02:49:13,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:13,024 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 1429 transitions. [2022-02-10 02:49:13,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:13,024 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1429 transitions. [2022-02-10 02:49:13,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:13,025 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:13,025 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:13,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-02-10 02:49:13,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:13,225 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:13,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:13,226 INFO L85 PathProgramCache]: Analyzing trace with hash 266162381, now seen corresponding path program 97 times [2022-02-10 02:49:13,226 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:13,226 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732562370] [2022-02-10 02:49:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:13,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:13,355 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:13,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732562370] [2022-02-10 02:49:13,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732562370] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:13,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267438515] [2022-02-10 02:49:13,355 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:13,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:13,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:13,357 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:13,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-10 02:49:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:13,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:13,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:13,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:13,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267438515] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:13,872 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:13,872 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 24 [2022-02-10 02:49:13,872 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52703177] [2022-02-10 02:49:13,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:13,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:49:13,872 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:13,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:49:13,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:49:13,872 INFO L87 Difference]: Start difference. First operand 500 states and 1429 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:14,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:14,081 INFO L93 Difference]: Finished difference Result 555 states and 1487 transitions. [2022-02-10 02:49:14,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:49:14,082 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:14,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:14,083 INFO L225 Difference]: With dead ends: 555 [2022-02-10 02:49:14,083 INFO L226 Difference]: Without dead ends: 550 [2022-02-10 02:49:14,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 9 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:14,083 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 95 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:14,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 285 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:14,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-02-10 02:49:14,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 500. [2022-02-10 02:49:14,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 2.8637274549098195) internal successors, (1429), 499 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1429 transitions. [2022-02-10 02:49:14,089 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1429 transitions. Word has length 21 [2022-02-10 02:49:14,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:14,090 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 1429 transitions. [2022-02-10 02:49:14,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:14,090 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1429 transitions. [2022-02-10 02:49:14,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:14,091 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:14,091 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:14,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:14,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-02-10 02:49:14,307 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:14,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:14,308 INFO L85 PathProgramCache]: Analyzing trace with hash -21913105, now seen corresponding path program 98 times [2022-02-10 02:49:14,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:14,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600055066] [2022-02-10 02:49:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:14,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:14,451 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:14,451 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:14,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600055066] [2022-02-10 02:49:14,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600055066] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:14,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100493632] [2022-02-10 02:49:14,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:14,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:14,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:14,456 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:14,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-10 02:49:14,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:14,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:14,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:14,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:14,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:15,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100493632] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:15,072 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:15,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 12] total 25 [2022-02-10 02:49:15,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575917135] [2022-02-10 02:49:15,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:15,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:49:15,073 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:15,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:49:15,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:49:15,073 INFO L87 Difference]: Start difference. First operand 500 states and 1429 transitions. Second operand has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:15,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:15,431 INFO L93 Difference]: Finished difference Result 652 states and 1684 transitions. [2022-02-10 02:49:15,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:49:15,431 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:15,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:15,432 INFO L225 Difference]: With dead ends: 652 [2022-02-10 02:49:15,433 INFO L226 Difference]: Without dead ends: 642 [2022-02-10 02:49:15,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:49:15,433 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 126 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:15,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 409 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:15,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-02-10 02:49:15,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 530. [2022-02-10 02:49:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 2.90359168241966) internal successors, (1536), 529 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:15,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1536 transitions. [2022-02-10 02:49:15,440 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1536 transitions. Word has length 21 [2022-02-10 02:49:15,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:15,440 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 1536 transitions. [2022-02-10 02:49:15,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:15,440 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1536 transitions. [2022-02-10 02:49:15,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:15,441 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:15,441 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:15,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-02-10 02:49:15,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-02-10 02:49:15,642 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:15,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:15,642 INFO L85 PathProgramCache]: Analyzing trace with hash 822095275, now seen corresponding path program 99 times [2022-02-10 02:49:15,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:15,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136023255] [2022-02-10 02:49:15,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:15,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:15,760 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:15,760 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136023255] [2022-02-10 02:49:15,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136023255] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:15,760 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236295887] [2022-02-10 02:49:15,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:15,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:15,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:15,761 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:15,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-10 02:49:15,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:49:15,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:15,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:15,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:15,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:16,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236295887] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:16,348 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:16,348 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 12] total 25 [2022-02-10 02:49:16,348 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400884046] [2022-02-10 02:49:16,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:16,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:49:16,349 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:16,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:49:16,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:49:16,349 INFO L87 Difference]: Start difference. First operand 530 states and 1536 transitions. Second operand has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:16,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:16,667 INFO L93 Difference]: Finished difference Result 649 states and 1677 transitions. [2022-02-10 02:49:16,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:49:16,668 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:16,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:16,669 INFO L225 Difference]: With dead ends: 649 [2022-02-10 02:49:16,669 INFO L226 Difference]: Without dead ends: 637 [2022-02-10 02:49:16,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:49:16,669 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 147 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:16,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 428 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:16,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-02-10 02:49:16,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 524. [2022-02-10 02:49:16,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 2.88527724665392) internal successors, (1509), 523 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:16,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1509 transitions. [2022-02-10 02:49:16,676 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1509 transitions. Word has length 21 [2022-02-10 02:49:16,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:16,676 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1509 transitions. [2022-02-10 02:49:16,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:16,676 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1509 transitions. [2022-02-10 02:49:16,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:16,677 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:16,677 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:16,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-02-10 02:49:16,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:16,891 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:16,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:16,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1238764527, now seen corresponding path program 100 times [2022-02-10 02:49:16,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:16,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082165878] [2022-02-10 02:49:16,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:16,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:17,032 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:17,032 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:17,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082165878] [2022-02-10 02:49:17,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082165878] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:17,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009418506] [2022-02-10 02:49:17,032 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:17,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:17,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:17,033 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:17,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-10 02:49:17,056 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:17,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:17,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:17,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:17,255 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:17,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:17,587 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:17,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009418506] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:17,588 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:17,588 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 12] total 24 [2022-02-10 02:49:17,588 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227937652] [2022-02-10 02:49:17,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:17,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:49:17,588 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:17,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:49:17,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:49:17,589 INFO L87 Difference]: Start difference. First operand 524 states and 1509 transitions. Second operand has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:17,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:17,965 INFO L93 Difference]: Finished difference Result 627 states and 1624 transitions. [2022-02-10 02:49:17,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:49:17,965 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:17,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:17,967 INFO L225 Difference]: With dead ends: 627 [2022-02-10 02:49:17,967 INFO L226 Difference]: Without dead ends: 615 [2022-02-10 02:49:17,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:49:17,967 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 140 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:17,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 373 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:17,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-02-10 02:49:17,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 522. [2022-02-10 02:49:17,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 521 states have (on average 2.8790786948176583) internal successors, (1500), 521 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:17,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 1500 transitions. [2022-02-10 02:49:17,974 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 1500 transitions. Word has length 21 [2022-02-10 02:49:17,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:17,974 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 1500 transitions. [2022-02-10 02:49:17,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:17,974 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1500 transitions. [2022-02-10 02:49:17,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:17,974 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:17,974 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:17,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-02-10 02:49:18,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:18,175 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:18,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:18,175 INFO L85 PathProgramCache]: Analyzing trace with hash -700908949, now seen corresponding path program 101 times [2022-02-10 02:49:18,176 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:18,176 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265711755] [2022-02-10 02:49:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:18,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:18,306 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:18,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265711755] [2022-02-10 02:49:18,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265711755] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:18,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140381401] [2022-02-10 02:49:18,306 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:18,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:18,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:18,307 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:18,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-10 02:49:18,330 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:49:18,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:18,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:18,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:18,538 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:18,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:18,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140381401] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:18,800 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:18,800 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 12] total 23 [2022-02-10 02:49:18,800 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953774349] [2022-02-10 02:49:18,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:18,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:49:18,801 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:18,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:49:18,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:49:18,801 INFO L87 Difference]: Start difference. First operand 522 states and 1500 transitions. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:19,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:19,107 INFO L93 Difference]: Finished difference Result 602 states and 1586 transitions. [2022-02-10 02:49:19,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:49:19,107 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:19,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:19,109 INFO L225 Difference]: With dead ends: 602 [2022-02-10 02:49:19,109 INFO L226 Difference]: Without dead ends: 597 [2022-02-10 02:49:19,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:49:19,109 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 111 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:19,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 337 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:19,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2022-02-10 02:49:19,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 523. [2022-02-10 02:49:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 522 states have (on average 2.875478927203065) internal successors, (1501), 522 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 1501 transitions. [2022-02-10 02:49:19,118 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 1501 transitions. Word has length 21 [2022-02-10 02:49:19,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:19,118 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 1501 transitions. [2022-02-10 02:49:19,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 1501 transitions. [2022-02-10 02:49:19,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:19,119 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:19,119 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:19,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-02-10 02:49:19,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-02-10 02:49:19,331 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:19,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:19,331 INFO L85 PathProgramCache]: Analyzing trace with hash -2058390677, now seen corresponding path program 102 times [2022-02-10 02:49:19,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:19,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883623418] [2022-02-10 02:49:19,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:19,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:19,452 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:19,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:19,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883623418] [2022-02-10 02:49:19,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883623418] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:19,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301301375] [2022-02-10 02:49:19,453 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:19,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:19,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:19,454 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:19,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-10 02:49:19,478 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:49:19,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:19,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:19,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:19,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:19,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301301375] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:19,963 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:19,964 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 24 [2022-02-10 02:49:19,964 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72478779] [2022-02-10 02:49:19,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:19,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:49:19,964 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:19,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:49:19,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:49:19,964 INFO L87 Difference]: Start difference. First operand 523 states and 1501 transitions. Second operand has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:20,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:20,168 INFO L93 Difference]: Finished difference Result 590 states and 1571 transitions. [2022-02-10 02:49:20,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 02:49:20,168 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:20,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:20,169 INFO L225 Difference]: With dead ends: 590 [2022-02-10 02:49:20,170 INFO L226 Difference]: Without dead ends: 583 [2022-02-10 02:49:20,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 20 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:49:20,170 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 122 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:20,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 233 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:20,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-02-10 02:49:20,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 520. [2022-02-10 02:49:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 2.8709055876685934) internal successors, (1490), 519 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:20,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 1490 transitions. [2022-02-10 02:49:20,177 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 1490 transitions. Word has length 21 [2022-02-10 02:49:20,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:20,177 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 1490 transitions. [2022-02-10 02:49:20,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:20,177 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 1490 transitions. [2022-02-10 02:49:20,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:20,178 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:20,178 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:20,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-02-10 02:49:20,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:20,391 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:20,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:20,392 INFO L85 PathProgramCache]: Analyzing trace with hash 569993003, now seen corresponding path program 103 times [2022-02-10 02:49:20,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:20,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928308406] [2022-02-10 02:49:20,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:20,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:20,536 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:20,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928308406] [2022-02-10 02:49:20,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928308406] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:20,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749404974] [2022-02-10 02:49:20,537 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:20,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:20,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:20,540 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:20,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-10 02:49:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:20,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:20,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:20,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:21,050 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:21,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749404974] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:21,050 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:21,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 26 [2022-02-10 02:49:21,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429868356] [2022-02-10 02:49:21,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:21,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:49:21,051 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:21,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:49:21,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:21,051 INFO L87 Difference]: Start difference. First operand 520 states and 1490 transitions. Second operand has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:21,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:21,424 INFO L93 Difference]: Finished difference Result 674 states and 1752 transitions. [2022-02-10 02:49:21,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:49:21,424 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:21,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:21,426 INFO L225 Difference]: With dead ends: 674 [2022-02-10 02:49:21,426 INFO L226 Difference]: Without dead ends: 664 [2022-02-10 02:49:21,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:49:21,426 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 159 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:21,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 478 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:21,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-02-10 02:49:21,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 556. [2022-02-10 02:49:21,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 2.9207207207207206) internal successors, (1621), 555 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:21,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1621 transitions. [2022-02-10 02:49:21,439 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1621 transitions. Word has length 21 [2022-02-10 02:49:21,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:21,439 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1621 transitions. [2022-02-10 02:49:21,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:21,439 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1621 transitions. [2022-02-10 02:49:21,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:21,440 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:21,440 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:21,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:21,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:21,662 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:21,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:21,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1414001383, now seen corresponding path program 104 times [2022-02-10 02:49:21,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:21,662 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904839833] [2022-02-10 02:49:21,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:21,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:21,794 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:21,794 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:21,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904839833] [2022-02-10 02:49:21,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904839833] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:21,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520547947] [2022-02-10 02:49:21,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:21,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:21,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:21,795 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:21,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-10 02:49:21,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:21,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:21,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:21,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:22,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:22,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520547947] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:22,287 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:22,287 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 26 [2022-02-10 02:49:22,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14262746] [2022-02-10 02:49:22,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:22,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:49:22,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:22,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:49:22,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:22,288 INFO L87 Difference]: Start difference. First operand 556 states and 1621 transitions. Second operand has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 26 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:22,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:22,622 INFO L93 Difference]: Finished difference Result 672 states and 1748 transitions. [2022-02-10 02:49:22,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:49:22,623 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 26 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:22,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:22,624 INFO L225 Difference]: With dead ends: 672 [2022-02-10 02:49:22,624 INFO L226 Difference]: Without dead ends: 660 [2022-02-10 02:49:22,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:49:22,625 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 144 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:22,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 494 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:22,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-02-10 02:49:22,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 547. [2022-02-10 02:49:22,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 2.899267399267399) internal successors, (1583), 546 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:22,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 1583 transitions. [2022-02-10 02:49:22,635 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 1583 transitions. Word has length 21 [2022-02-10 02:49:22,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:22,635 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 1583 transitions. [2022-02-10 02:49:22,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 26 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:22,635 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1583 transitions. [2022-02-10 02:49:22,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:22,636 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:22,636 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:22,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-02-10 02:49:22,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2022-02-10 02:49:22,856 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:22,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:22,856 INFO L85 PathProgramCache]: Analyzing trace with hash -646858419, now seen corresponding path program 105 times [2022-02-10 02:49:22,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:22,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832571693] [2022-02-10 02:49:22,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:22,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:22,974 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:22,975 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:22,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832571693] [2022-02-10 02:49:22,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832571693] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:22,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509074805] [2022-02-10 02:49:22,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:22,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:22,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:22,976 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:22,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-10 02:49:22,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:49:22,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:23,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:23,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:23,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:23,482 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:23,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509074805] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:23,483 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:23,483 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 24 [2022-02-10 02:49:23,483 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335604898] [2022-02-10 02:49:23,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:23,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:49:23,483 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:23,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:49:23,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:49:23,484 INFO L87 Difference]: Start difference. First operand 547 states and 1583 transitions. Second operand has 25 states, 25 states have (on average 1.84) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:23,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:23,861 INFO L93 Difference]: Finished difference Result 669 states and 1710 transitions. [2022-02-10 02:49:23,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:49:23,862 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:23,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:23,863 INFO L225 Difference]: With dead ends: 669 [2022-02-10 02:49:23,864 INFO L226 Difference]: Without dead ends: 656 [2022-02-10 02:49:23,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:49:23,864 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 150 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:23,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 492 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:23,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-02-10 02:49:23,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 541. [2022-02-10 02:49:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 540 states have (on average 2.888888888888889) internal successors, (1560), 540 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:23,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 1560 transitions. [2022-02-10 02:49:23,874 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 1560 transitions. Word has length 21 [2022-02-10 02:49:23,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:23,874 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 1560 transitions. [2022-02-10 02:49:23,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:23,874 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1560 transitions. [2022-02-10 02:49:23,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:23,875 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:23,875 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:23,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:24,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:24,097 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:24,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:24,097 INFO L85 PathProgramCache]: Analyzing trace with hash -109002841, now seen corresponding path program 106 times [2022-02-10 02:49:24,097 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:24,097 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272044872] [2022-02-10 02:49:24,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:24,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:24,231 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:24,232 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:24,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272044872] [2022-02-10 02:49:24,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272044872] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:24,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546150174] [2022-02-10 02:49:24,232 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:24,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:24,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:24,233 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:24,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-02-10 02:49:24,255 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:24,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:24,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:24,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:24,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:24,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546150174] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:24,725 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:24,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 23 [2022-02-10 02:49:24,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178905791] [2022-02-10 02:49:24,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:24,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:49:24,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:24,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:49:24,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:49:24,725 INFO L87 Difference]: Start difference. First operand 541 states and 1560 transitions. Second operand has 24 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:25,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:25,113 INFO L93 Difference]: Finished difference Result 643 states and 1667 transitions. [2022-02-10 02:49:25,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:49:25,114 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:25,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:25,115 INFO L225 Difference]: With dead ends: 643 [2022-02-10 02:49:25,115 INFO L226 Difference]: Without dead ends: 630 [2022-02-10 02:49:25,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:49:25,116 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 123 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:25,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 422 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:25,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-02-10 02:49:25,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 536. [2022-02-10 02:49:25,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 2.885981308411215) internal successors, (1544), 535 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1544 transitions. [2022-02-10 02:49:25,122 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1544 transitions. Word has length 21 [2022-02-10 02:49:25,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:25,122 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 1544 transitions. [2022-02-10 02:49:25,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:25,122 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1544 transitions. [2022-02-10 02:49:25,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:25,123 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:25,123 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:25,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:25,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-02-10 02:49:25,323 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:25,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:25,324 INFO L85 PathProgramCache]: Analyzing trace with hash -615349107, now seen corresponding path program 107 times [2022-02-10 02:49:25,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:25,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29329978] [2022-02-10 02:49:25,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:25,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:25,482 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:25,482 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:25,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29329978] [2022-02-10 02:49:25,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29329978] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:25,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851631771] [2022-02-10 02:49:25,483 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:25,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:25,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:25,484 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:25,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-02-10 02:49:25,513 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:49:25,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:25,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:25,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:25,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:26,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851631771] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:26,030 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:26,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2022-02-10 02:49:26,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495151198] [2022-02-10 02:49:26,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:26,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:49:26,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:26,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:49:26,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:26,031 INFO L87 Difference]: Start difference. First operand 536 states and 1544 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:26,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:26,428 INFO L93 Difference]: Finished difference Result 613 states and 1623 transitions. [2022-02-10 02:49:26,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:49:26,428 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:26,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:26,429 INFO L225 Difference]: With dead ends: 613 [2022-02-10 02:49:26,429 INFO L226 Difference]: Without dead ends: 608 [2022-02-10 02:49:26,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:49:26,430 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 101 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:26,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 396 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:26,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-02-10 02:49:26,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 538. [2022-02-10 02:49:26,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 2.8789571694599627) internal successors, (1546), 537 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:26,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1546 transitions. [2022-02-10 02:49:26,436 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1546 transitions. Word has length 21 [2022-02-10 02:49:26,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:26,436 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 1546 transitions. [2022-02-10 02:49:26,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:26,436 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1546 transitions. [2022-02-10 02:49:26,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:26,437 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:26,437 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:26,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:26,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:26,651 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:26,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:26,651 INFO L85 PathProgramCache]: Analyzing trace with hash -580686289, now seen corresponding path program 108 times [2022-02-10 02:49:26,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:26,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691658271] [2022-02-10 02:49:26,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:26,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:26,768 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:26,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691658271] [2022-02-10 02:49:26,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691658271] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:26,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578905743] [2022-02-10 02:49:26,768 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:26,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:26,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:26,769 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:26,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-02-10 02:49:26,792 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:49:26,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:26,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:26,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:27,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:27,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578905743] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:27,300 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:27,300 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 24 [2022-02-10 02:49:27,300 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768316161] [2022-02-10 02:49:27,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:27,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:49:27,300 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:27,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:49:27,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:49:27,301 INFO L87 Difference]: Start difference. First operand 538 states and 1546 transitions. Second operand has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:27,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:27,493 INFO L93 Difference]: Finished difference Result 573 states and 1582 transitions. [2022-02-10 02:49:27,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 02:49:27,493 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:27,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:27,496 INFO L225 Difference]: With dead ends: 573 [2022-02-10 02:49:27,496 INFO L226 Difference]: Without dead ends: 569 [2022-02-10 02:49:27,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 20 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:49:27,497 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 107 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:27,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 215 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:27,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-02-10 02:49:27,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 535. [2022-02-10 02:49:27,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 534 states have (on average 2.8782771535580522) internal successors, (1537), 534 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 1537 transitions. [2022-02-10 02:49:27,510 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 1537 transitions. Word has length 21 [2022-02-10 02:49:27,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:27,510 INFO L470 AbstractCegarLoop]: Abstraction has 535 states and 1537 transitions. [2022-02-10 02:49:27,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:27,510 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 1537 transitions. [2022-02-10 02:49:27,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:27,511 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:27,512 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:27,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:27,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-02-10 02:49:27,733 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:27,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:27,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1739213167, now seen corresponding path program 109 times [2022-02-10 02:49:27,734 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:27,734 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072460611] [2022-02-10 02:49:27,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:27,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:27,857 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:27,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072460611] [2022-02-10 02:49:27,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072460611] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:27,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680176564] [2022-02-10 02:49:27,858 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:27,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:27,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:27,859 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:27,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-02-10 02:49:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:27,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:27,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:28,072 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:28,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:28,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680176564] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:28,358 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:28,358 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2022-02-10 02:49:28,358 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802923019] [2022-02-10 02:49:28,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:28,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:49:28,358 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:28,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:49:28,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:28,358 INFO L87 Difference]: Start difference. First operand 535 states and 1537 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:28,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:28,757 INFO L93 Difference]: Finished difference Result 689 states and 1784 transitions. [2022-02-10 02:49:28,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:49:28,758 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:28,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:28,759 INFO L225 Difference]: With dead ends: 689 [2022-02-10 02:49:28,759 INFO L226 Difference]: Without dead ends: 681 [2022-02-10 02:49:28,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:49:28,759 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 147 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:28,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 530 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-02-10 02:49:28,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 569. [2022-02-10 02:49:28,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 2.9190140845070425) internal successors, (1658), 568 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1658 transitions. [2022-02-10 02:49:28,767 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1658 transitions. Word has length 21 [2022-02-10 02:49:28,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:28,767 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 1658 transitions. [2022-02-10 02:49:28,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:28,767 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1658 transitions. [2022-02-10 02:49:28,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:28,767 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:28,768 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:28,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-02-10 02:49:28,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-02-10 02:49:28,968 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:28,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:28,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1711745749, now seen corresponding path program 110 times [2022-02-10 02:49:28,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:28,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501951101] [2022-02-10 02:49:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:28,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:29,097 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:29,097 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:29,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501951101] [2022-02-10 02:49:29,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501951101] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:29,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346598729] [2022-02-10 02:49:29,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:29,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:29,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:29,098 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:29,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-02-10 02:49:29,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:29,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:29,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:29,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:29,293 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:29,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:29,588 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:29,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346598729] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:29,588 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:29,588 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 25 [2022-02-10 02:49:29,588 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953246657] [2022-02-10 02:49:29,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:29,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:49:29,589 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:29,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:49:29,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:49:29,589 INFO L87 Difference]: Start difference. First operand 569 states and 1658 transitions. Second operand has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:29,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:29,953 INFO L93 Difference]: Finished difference Result 691 states and 1785 transitions. [2022-02-10 02:49:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:49:29,953 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:29,954 INFO L225 Difference]: With dead ends: 691 [2022-02-10 02:49:29,954 INFO L226 Difference]: Without dead ends: 680 [2022-02-10 02:49:29,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:49:29,955 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 130 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:29,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 548 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:29,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-02-10 02:49:29,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 562. [2022-02-10 02:49:29,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 2.9055258467023175) internal successors, (1630), 561 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:29,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1630 transitions. [2022-02-10 02:49:29,962 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1630 transitions. Word has length 21 [2022-02-10 02:49:29,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:29,962 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 1630 transitions. [2022-02-10 02:49:29,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:29,962 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1630 transitions. [2022-02-10 02:49:29,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:29,963 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:29,963 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:29,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-02-10 02:49:30,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2022-02-10 02:49:30,163 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:30,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:30,163 INFO L85 PathProgramCache]: Analyzing trace with hash 522361745, now seen corresponding path program 111 times [2022-02-10 02:49:30,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:30,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118339782] [2022-02-10 02:49:30,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:30,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:30,282 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:30,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118339782] [2022-02-10 02:49:30,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118339782] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:30,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322358864] [2022-02-10 02:49:30,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:30,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:30,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:30,283 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:30,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-02-10 02:49:30,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:49:30,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:30,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:30,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:30,491 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:30,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:30,774 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:30,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322358864] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:30,774 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:30,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-02-10 02:49:30,774 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701442545] [2022-02-10 02:49:30,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:30,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:49:30,774 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:30,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:49:30,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:49:30,775 INFO L87 Difference]: Start difference. First operand 562 states and 1630 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:31,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:31,204 INFO L93 Difference]: Finished difference Result 693 states and 1766 transitions. [2022-02-10 02:49:31,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:49:31,204 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:31,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:31,205 INFO L225 Difference]: With dead ends: 693 [2022-02-10 02:49:31,205 INFO L226 Difference]: Without dead ends: 681 [2022-02-10 02:49:31,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=769, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:49:31,206 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 141 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:31,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 599 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:31,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-02-10 02:49:31,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 556. [2022-02-10 02:49:31,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 2.8972972972972975) internal successors, (1608), 555 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:31,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1608 transitions. [2022-02-10 02:49:31,213 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1608 transitions. Word has length 21 [2022-02-10 02:49:31,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:31,213 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1608 transitions. [2022-02-10 02:49:31,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:31,213 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1608 transitions. [2022-02-10 02:49:31,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:31,213 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:31,214 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:31,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-02-10 02:49:31,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2022-02-10 02:49:31,414 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:31,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:31,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1060217323, now seen corresponding path program 112 times [2022-02-10 02:49:31,414 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:31,414 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385538404] [2022-02-10 02:49:31,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:31,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:31,549 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:31,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:31,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385538404] [2022-02-10 02:49:31,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385538404] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:31,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879271137] [2022-02-10 02:49:31,550 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:31,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:31,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:31,551 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:31,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-02-10 02:49:31,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:31,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:31,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:31,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:31,774 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:31,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:32,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879271137] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:32,042 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:32,042 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-02-10 02:49:32,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864737496] [2022-02-10 02:49:32,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:32,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:49:32,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:32,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:49:32,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:49:32,043 INFO L87 Difference]: Start difference. First operand 556 states and 1608 transitions. Second operand has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:32,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:32,504 INFO L93 Difference]: Finished difference Result 698 states and 1755 transitions. [2022-02-10 02:49:32,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:49:32,505 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:32,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:32,506 INFO L225 Difference]: With dead ends: 698 [2022-02-10 02:49:32,507 INFO L226 Difference]: Without dead ends: 685 [2022-02-10 02:49:32,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:49:32,507 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 129 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:32,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 592 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:32,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-02-10 02:49:32,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 550. [2022-02-10 02:49:32,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 549 states have (on average 2.8925318761384333) internal successors, (1588), 549 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1588 transitions. [2022-02-10 02:49:32,517 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1588 transitions. Word has length 21 [2022-02-10 02:49:32,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:32,517 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 1588 transitions. [2022-02-10 02:49:32,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:32,517 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1588 transitions. [2022-02-10 02:49:32,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:32,518 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:32,518 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:32,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:32,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:32,741 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:32,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:32,741 INFO L85 PathProgramCache]: Analyzing trace with hash 553871057, now seen corresponding path program 113 times [2022-02-10 02:49:32,741 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:32,741 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608485857] [2022-02-10 02:49:32,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:32,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:32,871 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:32,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608485857] [2022-02-10 02:49:32,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608485857] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:32,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093369325] [2022-02-10 02:49:32,871 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:32,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:32,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:32,872 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:32,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-02-10 02:49:32,900 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:49:32,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:32,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:32,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:33,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:33,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093369325] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:33,341 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:33,341 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2022-02-10 02:49:33,342 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513615567] [2022-02-10 02:49:33,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:33,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:49:33,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:33,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:49:33,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:33,342 INFO L87 Difference]: Start difference. First operand 550 states and 1588 transitions. Second operand has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:33,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:33,836 INFO L93 Difference]: Finished difference Result 661 states and 1703 transitions. [2022-02-10 02:49:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:49:33,836 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:33,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:33,838 INFO L225 Difference]: With dead ends: 661 [2022-02-10 02:49:33,838 INFO L226 Difference]: Without dead ends: 647 [2022-02-10 02:49:33,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:49:33,838 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 103 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:33,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 546 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:49:33,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-02-10 02:49:33,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 543. [2022-02-10 02:49:33,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 542 states have (on average 2.896678966789668) internal successors, (1570), 542 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:33,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 1570 transitions. [2022-02-10 02:49:33,847 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 1570 transitions. Word has length 21 [2022-02-10 02:49:33,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:33,848 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 1570 transitions. [2022-02-10 02:49:33,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:33,848 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 1570 transitions. [2022-02-10 02:49:33,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:33,849 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:33,849 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:33,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:34,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:34,063 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:34,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:34,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2037005995, now seen corresponding path program 114 times [2022-02-10 02:49:34,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:34,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481496810] [2022-02-10 02:49:34,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:34,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:34,205 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:34,205 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:34,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481496810] [2022-02-10 02:49:34,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481496810] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:34,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413697842] [2022-02-10 02:49:34,206 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:34,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:34,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:34,207 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:34,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-02-10 02:49:34,229 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:49:34,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:34,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:34,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:34,435 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:34,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:34,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413697842] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:34,662 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:34,662 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 21 [2022-02-10 02:49:34,662 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713091272] [2022-02-10 02:49:34,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:34,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:49:34,662 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:34,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:49:34,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:49:34,662 INFO L87 Difference]: Start difference. First operand 543 states and 1570 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:35,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:35,014 INFO L93 Difference]: Finished difference Result 629 states and 1658 transitions. [2022-02-10 02:49:35,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:49:35,014 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:35,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:35,016 INFO L225 Difference]: With dead ends: 629 [2022-02-10 02:49:35,016 INFO L226 Difference]: Without dead ends: 624 [2022-02-10 02:49:35,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:35,016 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 89 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:35,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 389 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:35,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-02-10 02:49:35,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 547. [2022-02-10 02:49:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 2.8827838827838828) internal successors, (1574), 546 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 1574 transitions. [2022-02-10 02:49:35,023 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 1574 transitions. Word has length 21 [2022-02-10 02:49:35,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:35,023 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 1574 transitions. [2022-02-10 02:49:35,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:35,023 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1574 transitions. [2022-02-10 02:49:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:35,024 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:35,024 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:35,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-02-10 02:49:35,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:35,224 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:35,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:35,224 INFO L85 PathProgramCache]: Analyzing trace with hash -22025361, now seen corresponding path program 115 times [2022-02-10 02:49:35,225 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:35,225 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679623591] [2022-02-10 02:49:35,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:35,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:35,362 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:35,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679623591] [2022-02-10 02:49:35,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679623591] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:35,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667312791] [2022-02-10 02:49:35,362 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:35,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:35,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:35,363 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:35,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-02-10 02:49:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:35,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:35,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:35,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:35,908 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:35,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667312791] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:35,908 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:35,908 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 26 [2022-02-10 02:49:35,908 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048422479] [2022-02-10 02:49:35,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:35,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:49:35,908 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:35,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:49:35,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:35,909 INFO L87 Difference]: Start difference. First operand 547 states and 1574 transitions. Second operand has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 26 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:36,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:36,140 INFO L93 Difference]: Finished difference Result 635 states and 1702 transitions. [2022-02-10 02:49:36,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:49:36,143 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 26 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:36,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:36,145 INFO L225 Difference]: With dead ends: 635 [2022-02-10 02:49:36,145 INFO L226 Difference]: Without dead ends: 629 [2022-02-10 02:49:36,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 20 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:49:36,146 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 133 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:36,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 259 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:36,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-02-10 02:49:36,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 554. [2022-02-10 02:49:36,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 2.8896925858951175) internal successors, (1598), 553 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:36,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 1598 transitions. [2022-02-10 02:49:36,155 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 1598 transitions. Word has length 21 [2022-02-10 02:49:36,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:36,156 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 1598 transitions. [2022-02-10 02:49:36,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 26 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:36,156 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1598 transitions. [2022-02-10 02:49:36,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:36,157 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:36,157 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:36,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:36,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:36,359 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:36,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:36,360 INFO L85 PathProgramCache]: Analyzing trace with hash 821983019, now seen corresponding path program 116 times [2022-02-10 02:49:36,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:36,360 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278586254] [2022-02-10 02:49:36,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:36,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:36,503 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:36,503 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:36,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278586254] [2022-02-10 02:49:36,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278586254] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:36,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982295370] [2022-02-10 02:49:36,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:36,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:36,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:36,505 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:36,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-02-10 02:49:36,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:36,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:36,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:36,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:36,755 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:36,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:37,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982295370] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:37,049 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:37,049 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 25 [2022-02-10 02:49:37,049 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133666528] [2022-02-10 02:49:37,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:37,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:49:37,049 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:37,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:49:37,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:49:37,049 INFO L87 Difference]: Start difference. First operand 554 states and 1598 transitions. Second operand has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:37,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:37,282 INFO L93 Difference]: Finished difference Result 624 states and 1690 transitions. [2022-02-10 02:49:37,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:49:37,282 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:37,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:37,284 INFO L225 Difference]: With dead ends: 624 [2022-02-10 02:49:37,284 INFO L226 Difference]: Without dead ends: 619 [2022-02-10 02:49:37,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:49:37,284 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 102 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:37,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 301 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:37,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-02-10 02:49:37,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 554. [2022-02-10 02:49:37,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 2.8896925858951175) internal successors, (1598), 553 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:37,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 1598 transitions. [2022-02-10 02:49:37,294 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 1598 transitions. Word has length 21 [2022-02-10 02:49:37,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:37,294 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 1598 transitions. [2022-02-10 02:49:37,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:37,294 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1598 transitions. [2022-02-10 02:49:37,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:37,295 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:37,295 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:37,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:37,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:37,511 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:37,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:37,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2016490517, now seen corresponding path program 117 times [2022-02-10 02:49:37,512 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:37,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222733123] [2022-02-10 02:49:37,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:37,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:37,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:37,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222733123] [2022-02-10 02:49:37,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222733123] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:37,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336432916] [2022-02-10 02:49:37,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:37,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:37,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:37,637 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:37,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-02-10 02:49:37,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:49:37,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:37,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:37,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:37,883 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:37,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:38,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336432916] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:38,163 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:38,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 24 [2022-02-10 02:49:38,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087841995] [2022-02-10 02:49:38,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:38,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:49:38,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:38,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:49:38,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:49:38,164 INFO L87 Difference]: Start difference. First operand 554 states and 1598 transitions. Second operand has 25 states, 25 states have (on average 1.84) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:38,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:38,398 INFO L93 Difference]: Finished difference Result 609 states and 1666 transitions. [2022-02-10 02:49:38,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:49:38,398 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:38,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:38,399 INFO L225 Difference]: With dead ends: 609 [2022-02-10 02:49:38,400 INFO L226 Difference]: Without dead ends: 605 [2022-02-10 02:49:38,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 20 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:49:38,400 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 96 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:38,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 284 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:38,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-02-10 02:49:38,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 554. [2022-02-10 02:49:38,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 2.8896925858951175) internal successors, (1598), 553 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:38,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 1598 transitions. [2022-02-10 02:49:38,408 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 1598 transitions. Word has length 21 [2022-02-10 02:49:38,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:38,408 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 1598 transitions. [2022-02-10 02:49:38,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:38,409 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1598 transitions. [2022-02-10 02:49:38,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:38,409 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:38,410 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:38,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-02-10 02:49:38,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-02-10 02:49:38,631 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:38,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:38,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1214155119, now seen corresponding path program 118 times [2022-02-10 02:49:38,631 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:38,631 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944296656] [2022-02-10 02:49:38,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:38,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:38,781 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:38,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944296656] [2022-02-10 02:49:38,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944296656] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:38,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621652874] [2022-02-10 02:49:38,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:38,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:38,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:38,784 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:38,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-02-10 02:49:38,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:38,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:38,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:38,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:39,039 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:39,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:39,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621652874] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:39,334 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:39,334 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 12] total 26 [2022-02-10 02:49:39,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084211806] [2022-02-10 02:49:39,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:39,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:49:39,335 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:39,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:49:39,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:39,335 INFO L87 Difference]: Start difference. First operand 554 states and 1598 transitions. Second operand has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:39,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:39,608 INFO L93 Difference]: Finished difference Result 657 states and 1752 transitions. [2022-02-10 02:49:39,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:49:39,608 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:39,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:39,609 INFO L225 Difference]: With dead ends: 657 [2022-02-10 02:49:39,609 INFO L226 Difference]: Without dead ends: 651 [2022-02-10 02:49:39,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:49:39,610 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 137 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:39,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 329 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:39,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-02-10 02:49:39,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 564. [2022-02-10 02:49:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 563 states have (on average 2.9005328596802844) internal successors, (1633), 563 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 1633 transitions. [2022-02-10 02:49:39,617 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 1633 transitions. Word has length 21 [2022-02-10 02:49:39,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:39,617 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 1633 transitions. [2022-02-10 02:49:39,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:39,617 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 1633 transitions. [2022-02-10 02:49:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:39,618 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:39,618 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:39,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-02-10 02:49:39,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-02-10 02:49:39,818 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:39,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:39,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2058163499, now seen corresponding path program 119 times [2022-02-10 02:49:39,819 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:39,819 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372784964] [2022-02-10 02:49:39,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:39,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:39,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:39,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372784964] [2022-02-10 02:49:39,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372784964] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:39,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726145568] [2022-02-10 02:49:39,934 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:39,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:39,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:39,935 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:39,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-02-10 02:49:39,958 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:49:39,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:39,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:39,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:40,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:40,431 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:40,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726145568] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:40,431 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:40,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 12] total 25 [2022-02-10 02:49:40,432 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794711556] [2022-02-10 02:49:40,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:40,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:49:40,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:40,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:49:40,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:49:40,432 INFO L87 Difference]: Start difference. First operand 564 states and 1633 transitions. Second operand has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:40,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:40,671 INFO L93 Difference]: Finished difference Result 645 states and 1738 transitions. [2022-02-10 02:49:40,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:49:40,671 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:40,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:40,672 INFO L225 Difference]: With dead ends: 645 [2022-02-10 02:49:40,672 INFO L226 Difference]: Without dead ends: 640 [2022-02-10 02:49:40,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:49:40,672 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 109 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:40,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 320 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:40,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-02-10 02:49:40,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 564. [2022-02-10 02:49:40,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 563 states have (on average 2.9005328596802844) internal successors, (1633), 563 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:40,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 1633 transitions. [2022-02-10 02:49:40,684 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 1633 transitions. Word has length 21 [2022-02-10 02:49:40,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:40,685 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 1633 transitions. [2022-02-10 02:49:40,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:40,685 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 1633 transitions. [2022-02-10 02:49:40,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:40,685 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:40,685 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:40,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2022-02-10 02:49:40,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-02-10 02:49:40,886 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:40,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:40,887 INFO L85 PathProgramCache]: Analyzing trace with hash -780310037, now seen corresponding path program 120 times [2022-02-10 02:49:40,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:40,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795269218] [2022-02-10 02:49:40,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:40,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:41,007 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:41,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795269218] [2022-02-10 02:49:41,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795269218] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:41,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795244611] [2022-02-10 02:49:41,007 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:41,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:41,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:41,009 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:41,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-02-10 02:49:41,033 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:49:41,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:41,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:41,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:41,234 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:41,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:41,514 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:41,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795244611] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:41,514 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:41,514 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 12] total 24 [2022-02-10 02:49:41,514 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569913643] [2022-02-10 02:49:41,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:41,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:49:41,515 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:41,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:49:41,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:49:41,515 INFO L87 Difference]: Start difference. First operand 564 states and 1633 transitions. Second operand has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:41,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:41,771 INFO L93 Difference]: Finished difference Result 638 states and 1725 transitions. [2022-02-10 02:49:41,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:49:41,772 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:41,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:41,773 INFO L225 Difference]: With dead ends: 638 [2022-02-10 02:49:41,773 INFO L226 Difference]: Without dead ends: 631 [2022-02-10 02:49:41,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:49:41,773 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 100 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:41,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 270 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:41,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2022-02-10 02:49:41,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 564. [2022-02-10 02:49:41,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 563 states have (on average 2.8987566607460034) internal successors, (1632), 563 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:41,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 1632 transitions. [2022-02-10 02:49:41,780 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 1632 transitions. Word has length 21 [2022-02-10 02:49:41,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:41,780 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 1632 transitions. [2022-02-10 02:49:41,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 1632 transitions. [2022-02-10 02:49:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:41,781 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:41,781 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:41,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-02-10 02:49:41,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-02-10 02:49:41,982 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:41,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:41,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1815779567, now seen corresponding path program 121 times [2022-02-10 02:49:41,982 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:41,982 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044091030] [2022-02-10 02:49:41,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:41,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:42,137 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:42,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044091030] [2022-02-10 02:49:42,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044091030] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:42,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483545250] [2022-02-10 02:49:42,138 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:42,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:42,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:42,139 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:42,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-02-10 02:49:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:42,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:42,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:42,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:42,690 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:42,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483545250] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:42,690 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:42,690 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 12] total 23 [2022-02-10 02:49:42,690 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585654030] [2022-02-10 02:49:42,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:42,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:49:42,690 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:42,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:49:42,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:49:42,691 INFO L87 Difference]: Start difference. First operand 564 states and 1632 transitions. Second operand has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:42,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:42,982 INFO L93 Difference]: Finished difference Result 618 states and 1692 transitions. [2022-02-10 02:49:42,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:49:42,983 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:42,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:42,984 INFO L225 Difference]: With dead ends: 618 [2022-02-10 02:49:42,984 INFO L226 Difference]: Without dead ends: 614 [2022-02-10 02:49:42,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:49:42,984 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 66 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:42,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 339 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:42,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-02-10 02:49:42,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 564. [2022-02-10 02:49:42,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 563 states have (on average 2.8987566607460034) internal successors, (1632), 563 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:42,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 1632 transitions. [2022-02-10 02:49:42,993 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 1632 transitions. Word has length 21 [2022-02-10 02:49:42,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:42,993 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 1632 transitions. [2022-02-10 02:49:42,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:42,993 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 1632 transitions. [2022-02-10 02:49:42,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:42,994 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:42,994 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:43,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-02-10 02:49:43,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:43,216 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:43,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:43,216 INFO L85 PathProgramCache]: Analyzing trace with hash 596870503, now seen corresponding path program 122 times [2022-02-10 02:49:43,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:43,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573093360] [2022-02-10 02:49:43,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:43,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:43,353 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:43,353 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573093360] [2022-02-10 02:49:43,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573093360] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:43,353 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557127487] [2022-02-10 02:49:43,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:43,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:43,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:43,354 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:43,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-02-10 02:49:43,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:43,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:43,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:43,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:43,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:43,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557127487] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:43,857 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:43,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 12] total 23 [2022-02-10 02:49:43,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946825575] [2022-02-10 02:49:43,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:43,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:49:43,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:43,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:49:43,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:49:43,858 INFO L87 Difference]: Start difference. First operand 564 states and 1632 transitions. Second operand has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:44,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:44,108 INFO L93 Difference]: Finished difference Result 606 states and 1675 transitions. [2022-02-10 02:49:44,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:49:44,108 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:44,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:44,110 INFO L225 Difference]: With dead ends: 606 [2022-02-10 02:49:44,110 INFO L226 Difference]: Without dead ends: 602 [2022-02-10 02:49:44,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:49:44,110 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 60 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:44,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 252 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:44,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-02-10 02:49:44,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 561. [2022-02-10 02:49:44,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 560 states have (on average 2.898214285714286) internal successors, (1623), 560 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:44,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 1623 transitions. [2022-02-10 02:49:44,118 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 1623 transitions. Word has length 21 [2022-02-10 02:49:44,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:44,118 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 1623 transitions. [2022-02-10 02:49:44,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:44,118 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 1623 transitions. [2022-02-10 02:49:44,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:44,119 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:44,119 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:44,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:44,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:44,321 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:44,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:44,321 INFO L85 PathProgramCache]: Analyzing trace with hash 881044335, now seen corresponding path program 123 times [2022-02-10 02:49:44,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:44,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478249945] [2022-02-10 02:49:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:44,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:44,447 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:44,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:44,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478249945] [2022-02-10 02:49:44,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478249945] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:44,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694064139] [2022-02-10 02:49:44,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:44,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:44,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:44,449 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:44,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-02-10 02:49:44,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:49:44,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:44,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:44,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:44,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:44,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694064139] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:44,959 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:44,959 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 26 [2022-02-10 02:49:44,959 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703515875] [2022-02-10 02:49:44,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:44,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:49:44,959 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:44,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:49:44,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:44,960 INFO L87 Difference]: Start difference. First operand 561 states and 1623 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:45,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:45,262 INFO L93 Difference]: Finished difference Result 695 states and 1826 transitions. [2022-02-10 02:49:45,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:49:45,263 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:45,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:45,264 INFO L225 Difference]: With dead ends: 695 [2022-02-10 02:49:45,264 INFO L226 Difference]: Without dead ends: 689 [2022-02-10 02:49:45,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:49:45,264 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 93 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:45,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 413 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:45,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-02-10 02:49:45,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 576. [2022-02-10 02:49:45,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 2.9147826086956523) internal successors, (1676), 575 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1676 transitions. [2022-02-10 02:49:45,272 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1676 transitions. Word has length 21 [2022-02-10 02:49:45,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:45,273 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 1676 transitions. [2022-02-10 02:49:45,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:45,273 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1676 transitions. [2022-02-10 02:49:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:45,273 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:45,273 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:45,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2022-02-10 02:49:45,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2022-02-10 02:49:45,474 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:45,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:45,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1725052715, now seen corresponding path program 124 times [2022-02-10 02:49:45,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:45,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107810401] [2022-02-10 02:49:45,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:45,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:45,600 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:45,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:45,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107810401] [2022-02-10 02:49:45,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107810401] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:45,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713143125] [2022-02-10 02:49:45,601 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:45,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:45,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:45,602 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:45,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-02-10 02:49:45,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:45,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:45,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:45,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:45,814 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:45,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:46,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713143125] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:46,099 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:46,099 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 26 [2022-02-10 02:49:46,099 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86261053] [2022-02-10 02:49:46,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:46,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:49:46,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:46,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:49:46,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:46,100 INFO L87 Difference]: Start difference. First operand 576 states and 1676 transitions. Second operand has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:46,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:46,349 INFO L93 Difference]: Finished difference Result 685 states and 1813 transitions. [2022-02-10 02:49:46,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:49:46,350 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:46,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:46,351 INFO L225 Difference]: With dead ends: 685 [2022-02-10 02:49:46,351 INFO L226 Difference]: Without dead ends: 680 [2022-02-10 02:49:46,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:49:46,351 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 118 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:46,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 365 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:46,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-02-10 02:49:46,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 576. [2022-02-10 02:49:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 2.9147826086956523) internal successors, (1676), 575 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1676 transitions. [2022-02-10 02:49:46,358 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1676 transitions. Word has length 21 [2022-02-10 02:49:46,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:46,358 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 1676 transitions. [2022-02-10 02:49:46,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:46,358 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1676 transitions. [2022-02-10 02:49:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:46,359 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:46,359 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:46,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-02-10 02:49:46,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-02-10 02:49:46,560 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:46,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:46,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1113420821, now seen corresponding path program 125 times [2022-02-10 02:49:46,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:46,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157130253] [2022-02-10 02:49:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:46,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:46,682 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:46,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157130253] [2022-02-10 02:49:46,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157130253] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:46,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783441648] [2022-02-10 02:49:46,682 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:46,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:46,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:46,684 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:46,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-02-10 02:49:46,710 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:49:46,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:46,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:46,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:46,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:47,186 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:47,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783441648] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:47,187 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:47,187 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 24 [2022-02-10 02:49:47,187 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802280291] [2022-02-10 02:49:47,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:47,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:49:47,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:47,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:49:47,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:49:47,188 INFO L87 Difference]: Start difference. First operand 576 states and 1676 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:47,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:47,446 INFO L93 Difference]: Finished difference Result 690 states and 1815 transitions. [2022-02-10 02:49:47,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:49:47,446 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:47,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:47,447 INFO L225 Difference]: With dead ends: 690 [2022-02-10 02:49:47,447 INFO L226 Difference]: Without dead ends: 683 [2022-02-10 02:49:47,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:49:47,447 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 138 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:47,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 270 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:47,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-02-10 02:49:47,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 576. [2022-02-10 02:49:47,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 2.9130434782608696) internal successors, (1675), 575 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:47,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1675 transitions. [2022-02-10 02:49:47,454 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1675 transitions. Word has length 21 [2022-02-10 02:49:47,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:47,454 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 1675 transitions. [2022-02-10 02:49:47,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:47,454 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1675 transitions. [2022-02-10 02:49:47,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:47,455 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:47,455 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:47,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-02-10 02:49:47,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:47,656 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:47,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:47,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1482668783, now seen corresponding path program 126 times [2022-02-10 02:49:47,657 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:47,657 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157154997] [2022-02-10 02:49:47,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:47,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:47,784 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:47,785 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:47,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157154997] [2022-02-10 02:49:47,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157154997] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:47,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440551876] [2022-02-10 02:49:47,785 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:47,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:47,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:47,787 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:47,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-02-10 02:49:47,811 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:49:47,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:47,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:47,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:48,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:48,269 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:48,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440551876] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:48,269 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:48,269 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 23 [2022-02-10 02:49:48,269 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125762567] [2022-02-10 02:49:48,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:48,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:49:48,270 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:48,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:49:48,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:49:48,270 INFO L87 Difference]: Start difference. First operand 576 states and 1675 transitions. Second operand has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:48,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:48,560 INFO L93 Difference]: Finished difference Result 668 states and 1782 transitions. [2022-02-10 02:49:48,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:49:48,560 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:48,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:48,561 INFO L225 Difference]: With dead ends: 668 [2022-02-10 02:49:48,561 INFO L226 Difference]: Without dead ends: 660 [2022-02-10 02:49:48,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:49:48,561 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 101 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:48,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 275 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:48,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-02-10 02:49:48,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 574. [2022-02-10 02:49:48,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 2.917975567190227) internal successors, (1672), 573 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 1672 transitions. [2022-02-10 02:49:48,568 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 1672 transitions. Word has length 21 [2022-02-10 02:49:48,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:48,568 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 1672 transitions. [2022-02-10 02:49:48,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:48,568 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 1672 transitions. [2022-02-10 02:49:48,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:48,569 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:48,569 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:48,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2022-02-10 02:49:48,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:48,769 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:48,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:48,770 INFO L85 PathProgramCache]: Analyzing trace with hash 357067883, now seen corresponding path program 127 times [2022-02-10 02:49:48,770 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:48,770 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108382033] [2022-02-10 02:49:48,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:48,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:48,901 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:48,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108382033] [2022-02-10 02:49:48,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108382033] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:48,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115083107] [2022-02-10 02:49:48,902 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:48,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:48,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:48,903 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:48,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-02-10 02:49:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:48,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-10 02:49:48,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:49,121 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:49,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:49,377 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115083107] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:49,377 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:49,377 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2022-02-10 02:49:49,377 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933462611] [2022-02-10 02:49:49,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:49,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:49:49,377 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:49,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:49:49,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:49,378 INFO L87 Difference]: Start difference. First operand 574 states and 1672 transitions. Second operand has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:49,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:49,666 INFO L93 Difference]: Finished difference Result 647 states and 1751 transitions. [2022-02-10 02:49:49,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:49:49,666 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:49,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:49,667 INFO L225 Difference]: With dead ends: 647 [2022-02-10 02:49:49,667 INFO L226 Difference]: Without dead ends: 643 [2022-02-10 02:49:49,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:49:49,667 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 80 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:49,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 272 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:49,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-02-10 02:49:49,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 574. [2022-02-10 02:49:49,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 2.917975567190227) internal successors, (1672), 573 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:49,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 1672 transitions. [2022-02-10 02:49:49,674 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 1672 transitions. Word has length 21 [2022-02-10 02:49:49,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:49,675 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 1672 transitions. [2022-02-10 02:49:49,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:49,675 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 1672 transitions. [2022-02-10 02:49:49,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:49:49,675 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:49,675 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:49,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2022-02-10 02:49:49,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:49,876 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:49,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:49,876 INFO L85 PathProgramCache]: Analyzing trace with hash -610792753, now seen corresponding path program 128 times [2022-02-10 02:49:49,876 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:49,876 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690905744] [2022-02-10 02:49:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:49,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:49,948 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:49,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690905744] [2022-02-10 02:49:49,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690905744] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:49,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378845233] [2022-02-10 02:49:49,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:49,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:49,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:49,949 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:49,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-02-10 02:49:49,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:49,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:49,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:49:49,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:50,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:50,101 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:50,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378845233] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:50,101 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:50,101 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2022-02-10 02:49:50,102 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122335734] [2022-02-10 02:49:50,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:50,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 02:49:50,102 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:50,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 02:49:50,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:49:50,102 INFO L87 Difference]: Start difference. First operand 574 states and 1672 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:50,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:50,235 INFO L93 Difference]: Finished difference Result 755 states and 2140 transitions. [2022-02-10 02:49:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:49:50,235 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:49:50,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:50,243 INFO L225 Difference]: With dead ends: 755 [2022-02-10 02:49:50,243 INFO L226 Difference]: Without dead ends: 748 [2022-02-10 02:49:50,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=225, Invalid=645, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:49:50,244 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 61 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:50,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 78 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:50,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-02-10 02:49:50,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 571. [2022-02-10 02:49:50,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 2.9263157894736844) internal successors, (1668), 570 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:50,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 1668 transitions. [2022-02-10 02:49:50,251 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 1668 transitions. Word has length 22 [2022-02-10 02:49:50,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:50,251 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 1668 transitions. [2022-02-10 02:49:50,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:50,251 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 1668 transitions. [2022-02-10 02:49:50,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:49:50,252 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:50,252 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:50,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-02-10 02:49:50,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-02-10 02:49:50,452 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:50,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:50,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1359692661, now seen corresponding path program 129 times [2022-02-10 02:49:50,453 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:50,453 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355777700] [2022-02-10 02:49:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:50,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:50,511 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:50,511 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:50,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355777700] [2022-02-10 02:49:50,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355777700] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:50,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934197860] [2022-02-10 02:49:50,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:50,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:50,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:50,512 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:50,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-02-10 02:49:50,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:49:50,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:50,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:49:50,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:50,612 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:50,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:50,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934197860] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:50,649 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:50,649 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2022-02-10 02:49:50,649 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123408417] [2022-02-10 02:49:50,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:50,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 02:49:50,649 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:50,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 02:49:50,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:49:50,650 INFO L87 Difference]: Start difference. First operand 571 states and 1668 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:50,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:50,754 INFO L93 Difference]: Finished difference Result 788 states and 2233 transitions. [2022-02-10 02:49:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:49:50,755 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:49:50,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:50,756 INFO L225 Difference]: With dead ends: 788 [2022-02-10 02:49:50,756 INFO L226 Difference]: Without dead ends: 788 [2022-02-10 02:49:50,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:49:50,756 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 74 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:50,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 70 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:50,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-02-10 02:49:50,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 591. [2022-02-10 02:49:50,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 2.925423728813559) internal successors, (1726), 590 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:50,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1726 transitions. [2022-02-10 02:49:50,764 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1726 transitions. Word has length 22 [2022-02-10 02:49:50,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:50,764 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 1726 transitions. [2022-02-10 02:49:50,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:50,764 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1726 transitions. [2022-02-10 02:49:50,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:49:50,764 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:50,764 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:50,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2022-02-10 02:49:50,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-02-10 02:49:50,965 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:50,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:50,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1241173041, now seen corresponding path program 130 times [2022-02-10 02:49:50,965 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:50,965 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505671574] [2022-02-10 02:49:50,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:50,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:51,022 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:51,022 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505671574] [2022-02-10 02:49:51,022 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505671574] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:51,022 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38373946] [2022-02-10 02:49:51,022 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:51,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:51,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:51,023 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:51,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-02-10 02:49:51,046 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:51,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:51,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:49:51,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:51,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:51,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38373946] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:51,172 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:51,172 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:49:51,172 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519216125] [2022-02-10 02:49:51,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:51,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:49:51,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:51,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:49:51,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:49:51,173 INFO L87 Difference]: Start difference. First operand 591 states and 1726 transitions. Second operand has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:51,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:51,594 INFO L93 Difference]: Finished difference Result 1105 states and 3035 transitions. [2022-02-10 02:49:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 02:49:51,594 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:49:51,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:51,595 INFO L225 Difference]: With dead ends: 1105 [2022-02-10 02:49:51,595 INFO L226 Difference]: Without dead ends: 1101 [2022-02-10 02:49:51,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=837, Invalid=1713, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 02:49:51,596 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 170 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:51,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 95 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:51,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2022-02-10 02:49:51,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 837. [2022-02-10 02:49:51,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 3.0526315789473686) internal successors, (2552), 836 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:51,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 2552 transitions. [2022-02-10 02:49:51,608 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 2552 transitions. Word has length 22 [2022-02-10 02:49:51,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:51,608 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 2552 transitions. [2022-02-10 02:49:51,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:51,608 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 2552 transitions. [2022-02-10 02:49:51,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:49:51,609 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:51,609 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:51,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-02-10 02:49:51,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-02-10 02:49:51,810 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:51,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:51,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1059329099, now seen corresponding path program 131 times [2022-02-10 02:49:51,810 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:51,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213261024] [2022-02-10 02:49:51,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:51,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:51,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:51,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213261024] [2022-02-10 02:49:51,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213261024] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:51,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289090429] [2022-02-10 02:49:51,872 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:51,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:51,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:51,873 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:51,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-02-10 02:49:51,908 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:49:51,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:51,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:49:51,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:52,004 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:52,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:52,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289090429] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:52,038 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:52,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:49:52,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196173179] [2022-02-10 02:49:52,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:52,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:49:52,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:52,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:49:52,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:49:52,039 INFO L87 Difference]: Start difference. First operand 837 states and 2552 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:52,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:52,470 INFO L93 Difference]: Finished difference Result 1040 states and 2878 transitions. [2022-02-10 02:49:52,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 02:49:52,470 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:49:52,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:52,471 INFO L225 Difference]: With dead ends: 1040 [2022-02-10 02:49:52,471 INFO L226 Difference]: Without dead ends: 1036 [2022-02-10 02:49:52,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=702, Invalid=1748, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 02:49:52,472 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 123 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:52,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 137 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:52,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-02-10 02:49:52,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 717. [2022-02-10 02:49:52,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 716 states have (on average 2.9539106145251397) internal successors, (2115), 716 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:52,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 2115 transitions. [2022-02-10 02:49:52,481 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 2115 transitions. Word has length 22 [2022-02-10 02:49:52,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:52,481 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 2115 transitions. [2022-02-10 02:49:52,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 2115 transitions. [2022-02-10 02:49:52,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:49:52,482 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:52,482 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:52,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-02-10 02:49:52,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-02-10 02:49:52,683 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:52,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:52,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1693677515, now seen corresponding path program 132 times [2022-02-10 02:49:52,683 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:52,683 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879406034] [2022-02-10 02:49:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:52,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:52,749 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:52,749 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879406034] [2022-02-10 02:49:52,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879406034] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:52,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312517061] [2022-02-10 02:49:52,750 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:52,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:52,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:52,751 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:52,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-02-10 02:49:52,774 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:49:52,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:52,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:49:52,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:52,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:52,899 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:52,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312517061] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:52,899 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:52,899 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:49:52,899 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694280052] [2022-02-10 02:49:52,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:52,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:49:52,899 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:52,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:49:52,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:49:52,900 INFO L87 Difference]: Start difference. First operand 717 states and 2115 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:53,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:53,346 INFO L93 Difference]: Finished difference Result 1053 states and 2730 transitions. [2022-02-10 02:49:53,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-10 02:49:53,347 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:49:53,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:53,348 INFO L225 Difference]: With dead ends: 1053 [2022-02-10 02:49:53,348 INFO L226 Difference]: Without dead ends: 1053 [2022-02-10 02:49:53,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=887, Invalid=1563, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 02:49:53,348 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 157 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:53,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 165 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:53,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2022-02-10 02:49:53,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 752. [2022-02-10 02:49:53,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 2.9760319573901466) internal successors, (2235), 751 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:53,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 2235 transitions. [2022-02-10 02:49:53,358 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 2235 transitions. Word has length 22 [2022-02-10 02:49:53,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:53,358 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 2235 transitions. [2022-02-10 02:49:53,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:53,358 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 2235 transitions. [2022-02-10 02:49:53,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:49:53,359 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:53,359 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:53,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2022-02-10 02:49:53,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:53,560 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:53,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:53,560 INFO L85 PathProgramCache]: Analyzing trace with hash 476826093, now seen corresponding path program 133 times [2022-02-10 02:49:53,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:53,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533135663] [2022-02-10 02:49:53,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:53,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:53,628 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:53,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533135663] [2022-02-10 02:49:53,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533135663] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:53,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952260330] [2022-02-10 02:49:53,629 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:53,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:53,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:53,630 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:53,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-02-10 02:49:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:53,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:49:53,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:53,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:53,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952260330] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:53,811 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:53,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:49:53,811 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420095191] [2022-02-10 02:49:53,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:53,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:49:53,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:53,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:49:53,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:49:53,812 INFO L87 Difference]: Start difference. First operand 752 states and 2235 transitions. Second operand has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:54,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:54,385 INFO L93 Difference]: Finished difference Result 892 states and 2419 transitions. [2022-02-10 02:49:54,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-10 02:49:54,387 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:49:54,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:54,396 INFO L225 Difference]: With dead ends: 892 [2022-02-10 02:49:54,396 INFO L226 Difference]: Without dead ends: 890 [2022-02-10 02:49:54,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1484, Invalid=2806, Unknown=0, NotChecked=0, Total=4290 [2022-02-10 02:49:54,396 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 127 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:54,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 109 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-02-10 02:49:54,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 695. [2022-02-10 02:49:54,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 694 states have (on average 2.935158501440922) internal successors, (2037), 694 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:54,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 2037 transitions. [2022-02-10 02:49:54,405 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 2037 transitions. Word has length 22 [2022-02-10 02:49:54,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:54,405 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 2037 transitions. [2022-02-10 02:49:54,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:54,405 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 2037 transitions. [2022-02-10 02:49:54,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:49:54,406 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:54,406 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:54,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2022-02-10 02:49:54,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-02-10 02:49:54,607 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:54,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:54,607 INFO L85 PathProgramCache]: Analyzing trace with hash -639548593, now seen corresponding path program 134 times [2022-02-10 02:49:54,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:54,607 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287945389] [2022-02-10 02:49:54,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:54,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:54,663 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:54,663 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:54,663 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287945389] [2022-02-10 02:49:54,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287945389] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:54,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118969851] [2022-02-10 02:49:54,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:54,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:54,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:54,665 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:54,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-02-10 02:49:54,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:54,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:54,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:49:54,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:54,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:54,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118969851] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:54,819 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:54,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:49:54,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674610779] [2022-02-10 02:49:54,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:54,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:49:54,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:54,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:49:54,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:49:54,820 INFO L87 Difference]: Start difference. First operand 695 states and 2037 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:55,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:55,175 INFO L93 Difference]: Finished difference Result 967 states and 2603 transitions. [2022-02-10 02:49:55,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-10 02:49:55,176 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:49:55,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:55,177 INFO L225 Difference]: With dead ends: 967 [2022-02-10 02:49:55,177 INFO L226 Difference]: Without dead ends: 963 [2022-02-10 02:49:55,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=574, Invalid=1588, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 02:49:55,178 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 117 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:55,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 94 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:55,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-02-10 02:49:55,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 738. [2022-02-10 02:49:55,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 2.959294436906377) internal successors, (2181), 737 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:55,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 2181 transitions. [2022-02-10 02:49:55,188 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 2181 transitions. Word has length 22 [2022-02-10 02:49:55,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:55,188 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 2181 transitions. [2022-02-10 02:49:55,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:55,188 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 2181 transitions. [2022-02-10 02:49:55,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:49:55,189 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:55,189 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:55,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2022-02-10 02:49:55,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:55,389 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:55,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:55,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1765149493, now seen corresponding path program 135 times [2022-02-10 02:49:55,390 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:55,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029300870] [2022-02-10 02:49:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:55,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:55,446 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:55,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:55,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029300870] [2022-02-10 02:49:55,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029300870] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:55,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059030570] [2022-02-10 02:49:55,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:55,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:55,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:55,447 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:55,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-02-10 02:49:55,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:49:55,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:55,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:49:55,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:55,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:55,601 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:55,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059030570] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:55,601 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:55,601 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:49:55,601 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717413587] [2022-02-10 02:49:55,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:55,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:49:55,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:55,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:49:55,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:49:55,602 INFO L87 Difference]: Start difference. First operand 738 states and 2181 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:55,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:55,917 INFO L93 Difference]: Finished difference Result 1022 states and 2814 transitions. [2022-02-10 02:49:55,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 02:49:55,917 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:49:55,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:55,918 INFO L225 Difference]: With dead ends: 1022 [2022-02-10 02:49:55,918 INFO L226 Difference]: Without dead ends: 1017 [2022-02-10 02:49:55,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=471, Invalid=1421, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:49:55,919 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 137 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:55,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 97 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:55,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2022-02-10 02:49:55,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 763. [2022-02-10 02:49:55,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 762 states have (on average 2.9658792650918637) internal successors, (2260), 762 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:55,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 2260 transitions. [2022-02-10 02:49:55,929 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 2260 transitions. Word has length 22 [2022-02-10 02:49:55,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:55,929 INFO L470 AbstractCegarLoop]: Abstraction has 763 states and 2260 transitions. [2022-02-10 02:49:55,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:55,929 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 2260 transitions. [2022-02-10 02:49:55,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:49:55,930 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:55,930 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:55,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2022-02-10 02:49:56,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:56,131 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:56,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:56,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1995928271, now seen corresponding path program 136 times [2022-02-10 02:49:56,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:56,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034146730] [2022-02-10 02:49:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:56,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:56,187 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:56,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034146730] [2022-02-10 02:49:56,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034146730] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:56,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106641264] [2022-02-10 02:49:56,187 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:56,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:56,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:56,188 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:56,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-02-10 02:49:56,211 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:56,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:56,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:49:56,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:56,304 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:56,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:56,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106641264] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:56,339 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:56,339 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:49:56,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918325858] [2022-02-10 02:49:56,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:56,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:49:56,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:56,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:49:56,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:49:56,340 INFO L87 Difference]: Start difference. First operand 763 states and 2260 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:56,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:56,611 INFO L93 Difference]: Finished difference Result 1058 states and 3004 transitions. [2022-02-10 02:49:56,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-10 02:49:56,612 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:49:56,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:56,614 INFO L225 Difference]: With dead ends: 1058 [2022-02-10 02:49:56,614 INFO L226 Difference]: Without dead ends: 1052 [2022-02-10 02:49:56,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=394, Invalid=1246, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:49:56,614 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 87 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:56,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 85 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:56,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-02-10 02:49:56,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 782. [2022-02-10 02:49:56,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 781 states have (on average 2.943661971830986) internal successors, (2299), 781 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 2299 transitions. [2022-02-10 02:49:56,625 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 2299 transitions. Word has length 22 [2022-02-10 02:49:56,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:56,626 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 2299 transitions. [2022-02-10 02:49:56,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:56,626 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 2299 transitions. [2022-02-10 02:49:56,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:49:56,627 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:56,627 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:56,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2022-02-10 02:49:56,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:56,828 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:56,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:56,828 INFO L85 PathProgramCache]: Analyzing trace with hash 188750607, now seen corresponding path program 137 times [2022-02-10 02:49:56,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:56,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965246511] [2022-02-10 02:49:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:56,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:56,879 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:56,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965246511] [2022-02-10 02:49:56,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965246511] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:56,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928979265] [2022-02-10 02:49:56,879 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:56,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:56,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:56,880 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:56,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-02-10 02:49:56,903 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:49:56,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:56,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:49:56,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:57,001 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:57,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:57,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928979265] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:57,037 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:57,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 19 [2022-02-10 02:49:57,037 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657778763] [2022-02-10 02:49:57,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:57,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:49:57,037 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:57,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:49:57,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:49:57,037 INFO L87 Difference]: Start difference. First operand 782 states and 2299 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:57,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:57,509 INFO L93 Difference]: Finished difference Result 1245 states and 3186 transitions. [2022-02-10 02:49:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-10 02:49:57,509 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:49:57,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:57,511 INFO L225 Difference]: With dead ends: 1245 [2022-02-10 02:49:57,511 INFO L226 Difference]: Without dead ends: 1239 [2022-02-10 02:49:57,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=917, Invalid=1633, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 02:49:57,511 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 183 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:57,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 152 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:57,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-02-10 02:49:57,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 844. [2022-02-10 02:49:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 2.962040332147094) internal successors, (2497), 843 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2497 transitions. [2022-02-10 02:49:57,523 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2497 transitions. Word has length 22 [2022-02-10 02:49:57,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:57,524 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2497 transitions. [2022-02-10 02:49:57,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:57,524 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2497 transitions. [2022-02-10 02:49:57,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:49:57,525 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:57,525 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:57,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2022-02-10 02:49:57,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:57,725 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:57,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:57,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1028100815, now seen corresponding path program 138 times [2022-02-10 02:49:57,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:57,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995406627] [2022-02-10 02:49:57,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:57,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:57,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:57,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995406627] [2022-02-10 02:49:57,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995406627] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:57,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949226375] [2022-02-10 02:49:57,778 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:57,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:57,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:57,779 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:57,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-02-10 02:49:57,803 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:49:57,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:57,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:49:57,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:57,897 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:57,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:57,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949226375] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:57,930 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:57,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 19 [2022-02-10 02:49:57,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350192313] [2022-02-10 02:49:57,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:57,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:49:57,931 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:57,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:49:57,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:49:57,931 INFO L87 Difference]: Start difference. First operand 844 states and 2497 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:58,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:58,508 INFO L93 Difference]: Finished difference Result 1092 states and 2830 transitions. [2022-02-10 02:49:58,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-10 02:49:58,508 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:49:58,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:58,510 INFO L225 Difference]: With dead ends: 1092 [2022-02-10 02:49:58,510 INFO L226 Difference]: Without dead ends: 1089 [2022-02-10 02:49:58,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1357, Invalid=2803, Unknown=0, NotChecked=0, Total=4160 [2022-02-10 02:49:58,511 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 179 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:58,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 124 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:58,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2022-02-10 02:49:58,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 753. [2022-02-10 02:49:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 752 states have (on average 2.896276595744681) internal successors, (2178), 752 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:58,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 2178 transitions. [2022-02-10 02:49:58,521 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 2178 transitions. Word has length 22 [2022-02-10 02:49:58,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:58,521 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 2178 transitions. [2022-02-10 02:49:58,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:58,521 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 2178 transitions. [2022-02-10 02:49:58,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:49:58,522 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:58,522 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:58,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Ended with exit code 0 [2022-02-10 02:49:58,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2022-02-10 02:49:58,723 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:58,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:58,723 INFO L85 PathProgramCache]: Analyzing trace with hash -490245237, now seen corresponding path program 139 times [2022-02-10 02:49:58,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:58,723 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453172155] [2022-02-10 02:49:58,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:58,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:58,782 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:58,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453172155] [2022-02-10 02:49:58,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453172155] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:58,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133496852] [2022-02-10 02:49:58,783 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:58,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:58,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:58,784 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:58,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-02-10 02:49:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:58,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:49:58,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:58,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:58,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133496852] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:58,945 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:58,945 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-02-10 02:49:58,945 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850233351] [2022-02-10 02:49:58,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:58,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:49:58,945 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:58,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:49:58,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:49:58,946 INFO L87 Difference]: Start difference. First operand 753 states and 2178 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:59,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:59,483 INFO L93 Difference]: Finished difference Result 960 states and 2471 transitions. [2022-02-10 02:49:59,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-10 02:49:59,484 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:49:59,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:59,485 INFO L225 Difference]: With dead ends: 960 [2022-02-10 02:49:59,485 INFO L226 Difference]: Without dead ends: 956 [2022-02-10 02:49:59,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1464, Invalid=3092, Unknown=0, NotChecked=0, Total=4556 [2022-02-10 02:49:59,486 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 131 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:59,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 111 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:59,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-02-10 02:49:59,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 753. [2022-02-10 02:49:59,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 752 states have (on average 2.8922872340425534) internal successors, (2175), 752 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 2175 transitions. [2022-02-10 02:49:59,496 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 2175 transitions. Word has length 22 [2022-02-10 02:49:59,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:59,496 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 2175 transitions. [2022-02-10 02:49:59,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 2175 transitions. [2022-02-10 02:49:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:49:59,497 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:59,497 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:59,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Ended with exit code 0 [2022-02-10 02:49:59,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-02-10 02:49:59,697 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:59,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:59,697 INFO L85 PathProgramCache]: Analyzing trace with hash 780656715, now seen corresponding path program 140 times [2022-02-10 02:49:59,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:59,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87844593] [2022-02-10 02:49:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:59,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:59,748 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:59,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87844593] [2022-02-10 02:49:59,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87844593] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:59,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431107742] [2022-02-10 02:49:59,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:59,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:59,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:59,749 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:59,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-02-10 02:49:59,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:59,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:59,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:49:59,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:59,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:59,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431107742] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:59,911 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:59,911 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 19 [2022-02-10 02:49:59,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564378190] [2022-02-10 02:49:59,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:59,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:49:59,911 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:59,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:49:59,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:49:59,912 INFO L87 Difference]: Start difference. First operand 753 states and 2175 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:00,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:00,313 INFO L93 Difference]: Finished difference Result 1321 states and 3359 transitions. [2022-02-10 02:50:00,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 02:50:00,314 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:50:00,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:00,315 INFO L225 Difference]: With dead ends: 1321 [2022-02-10 02:50:00,315 INFO L226 Difference]: Without dead ends: 1313 [2022-02-10 02:50:00,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=811, Invalid=1445, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 02:50:00,316 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 171 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:00,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 123 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:00,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2022-02-10 02:50:00,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 836. [2022-02-10 02:50:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 2.934131736526946) internal successors, (2450), 835 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:00,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 2450 transitions. [2022-02-10 02:50:00,333 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 2450 transitions. Word has length 22 [2022-02-10 02:50:00,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:00,333 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 2450 transitions. [2022-02-10 02:50:00,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:00,334 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 2450 transitions. [2022-02-10 02:50:00,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:50:00,335 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:00,335 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:00,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2022-02-10 02:50:00,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:00,535 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:00,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:00,535 INFO L85 PathProgramCache]: Analyzing trace with hash -436194707, now seen corresponding path program 141 times [2022-02-10 02:50:00,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:00,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337202417] [2022-02-10 02:50:00,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:00,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:00,594 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:00,594 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:00,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337202417] [2022-02-10 02:50:00,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337202417] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:00,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632123717] [2022-02-10 02:50:00,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:50:00,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:00,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:00,595 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:00,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-02-10 02:50:00,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:50:00,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:00,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:50:00,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:00,743 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:00,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:00,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632123717] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:00,777 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:00,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 19 [2022-02-10 02:50:00,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20649852] [2022-02-10 02:50:00,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:00,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:50:00,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:00,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:50:00,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:50:00,779 INFO L87 Difference]: Start difference. First operand 836 states and 2450 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:01,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:01,344 INFO L93 Difference]: Finished difference Result 1126 states and 2885 transitions. [2022-02-10 02:50:01,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-10 02:50:01,345 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:50:01,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:01,346 INFO L225 Difference]: With dead ends: 1126 [2022-02-10 02:50:01,346 INFO L226 Difference]: Without dead ends: 1123 [2022-02-10 02:50:01,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1070 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1349, Invalid=2941, Unknown=0, NotChecked=0, Total=4290 [2022-02-10 02:50:01,347 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 177 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:01,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 102 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:01,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-02-10 02:50:01,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 764. [2022-02-10 02:50:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 2.887287024901704) internal successors, (2203), 763 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:01,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2203 transitions. [2022-02-10 02:50:01,357 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 2203 transitions. Word has length 22 [2022-02-10 02:50:01,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:01,357 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 2203 transitions. [2022-02-10 02:50:01,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:01,357 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 2203 transitions. [2022-02-10 02:50:01,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:50:01,358 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:01,358 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:01,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2022-02-10 02:50:01,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-02-10 02:50:01,559 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:01,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:01,559 INFO L85 PathProgramCache]: Analyzing trace with hash 101660871, now seen corresponding path program 142 times [2022-02-10 02:50:01,559 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:01,559 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320286012] [2022-02-10 02:50:01,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:01,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:01,615 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:01,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320286012] [2022-02-10 02:50:01,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320286012] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:01,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692368209] [2022-02-10 02:50:01,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:50:01,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:01,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:01,617 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:01,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-02-10 02:50:01,639 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:50:01,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:01,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:50:01,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:01,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:01,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692368209] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:01,778 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:01,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 20 [2022-02-10 02:50:01,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885863945] [2022-02-10 02:50:01,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:01,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:50:01,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:01,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:50:01,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:50:01,779 INFO L87 Difference]: Start difference. First operand 764 states and 2203 transitions. Second operand has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:02,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:02,340 INFO L93 Difference]: Finished difference Result 1063 states and 2683 transitions. [2022-02-10 02:50:02,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-10 02:50:02,341 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:50:02,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:02,342 INFO L225 Difference]: With dead ends: 1063 [2022-02-10 02:50:02,342 INFO L226 Difference]: Without dead ends: 1059 [2022-02-10 02:50:02,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1335, Invalid=3087, Unknown=0, NotChecked=0, Total=4422 [2022-02-10 02:50:02,343 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 161 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:02,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 101 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:02,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-02-10 02:50:02,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 754. [2022-02-10 02:50:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 2.8791500664010625) internal successors, (2168), 753 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 2168 transitions. [2022-02-10 02:50:02,359 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 2168 transitions. Word has length 22 [2022-02-10 02:50:02,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:02,359 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 2168 transitions. [2022-02-10 02:50:02,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:02,359 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 2168 transitions. [2022-02-10 02:50:02,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:50:02,360 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:02,360 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:02,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2022-02-10 02:50:02,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-02-10 02:50:02,562 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:02,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:02,562 INFO L85 PathProgramCache]: Analyzing trace with hash -404685395, now seen corresponding path program 143 times [2022-02-10 02:50:02,562 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:02,562 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682274335] [2022-02-10 02:50:02,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:02,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:02,640 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:02,641 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:02,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682274335] [2022-02-10 02:50:02,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682274335] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:02,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439638266] [2022-02-10 02:50:02,641 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:50:02,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:02,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:02,642 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:02,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-02-10 02:50:02,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:50:02,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:02,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:50:02,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:02,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:02,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439638266] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:02,850 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:02,851 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 21 [2022-02-10 02:50:02,851 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276934542] [2022-02-10 02:50:02,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:02,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:50:02,851 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:02,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:50:02,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:50:02,851 INFO L87 Difference]: Start difference. First operand 754 states and 2168 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:03,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:03,406 INFO L93 Difference]: Finished difference Result 1004 states and 2562 transitions. [2022-02-10 02:50:03,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-10 02:50:03,407 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:50:03,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:03,408 INFO L225 Difference]: With dead ends: 1004 [2022-02-10 02:50:03,408 INFO L226 Difference]: Without dead ends: 998 [2022-02-10 02:50:03,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1283 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1406, Invalid=3286, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 02:50:03,409 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 133 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:03,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 100 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:03,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-02-10 02:50:03,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 754. [2022-02-10 02:50:03,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 2.8751660026560426) internal successors, (2165), 753 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:03,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 2165 transitions. [2022-02-10 02:50:03,420 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 2165 transitions. Word has length 22 [2022-02-10 02:50:03,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:03,420 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 2165 transitions. [2022-02-10 02:50:03,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:03,420 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 2165 transitions. [2022-02-10 02:50:03,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:50:03,421 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:03,421 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:03,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2022-02-10 02:50:03,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2022-02-10 02:50:03,622 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:03,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:03,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1949876879, now seen corresponding path program 144 times [2022-02-10 02:50:03,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:03,622 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979585791] [2022-02-10 02:50:03,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:03,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:03,665 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:03,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:03,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979585791] [2022-02-10 02:50:03,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979585791] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:03,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432413399] [2022-02-10 02:50:03,665 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:50:03,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:03,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:03,666 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:03,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-02-10 02:50:03,690 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:50:03,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:03,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:50:03,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:03,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:03,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432413399] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:03,835 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:03,835 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 19 [2022-02-10 02:50:03,835 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310181708] [2022-02-10 02:50:03,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:03,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:50:03,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:03,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:50:03,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:50:03,835 INFO L87 Difference]: Start difference. First operand 754 states and 2165 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:04,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:04,212 INFO L93 Difference]: Finished difference Result 1416 states and 3646 transitions. [2022-02-10 02:50:04,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-10 02:50:04,213 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:50:04,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:04,215 INFO L225 Difference]: With dead ends: 1416 [2022-02-10 02:50:04,215 INFO L226 Difference]: Without dead ends: 1409 [2022-02-10 02:50:04,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=713, Invalid=1267, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:50:04,215 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 179 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:04,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 115 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:04,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2022-02-10 02:50:04,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 935. [2022-02-10 02:50:04,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 934 states have (on average 2.941113490364026) internal successors, (2747), 934 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:04,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 2747 transitions. [2022-02-10 02:50:04,229 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 2747 transitions. Word has length 22 [2022-02-10 02:50:04,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:04,229 INFO L470 AbstractCegarLoop]: Abstraction has 935 states and 2747 transitions. [2022-02-10 02:50:04,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:04,229 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 2747 transitions. [2022-02-10 02:50:04,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:50:04,230 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:04,230 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:04,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:04,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:04,432 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:04,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:04,432 INFO L85 PathProgramCache]: Analyzing trace with hash 733025457, now seen corresponding path program 145 times [2022-02-10 02:50:04,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:04,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765711554] [2022-02-10 02:50:04,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:04,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:04,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:04,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765711554] [2022-02-10 02:50:04,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765711554] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:04,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244719024] [2022-02-10 02:50:04,481 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:50:04,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:04,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:04,482 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:04,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-02-10 02:50:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:04,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:50:04,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:04,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:04,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244719024] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:04,647 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:04,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 19 [2022-02-10 02:50:04,647 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606497379] [2022-02-10 02:50:04,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:04,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:50:04,647 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:04,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:50:04,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:50:04,647 INFO L87 Difference]: Start difference. First operand 935 states and 2747 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:05,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:05,268 INFO L93 Difference]: Finished difference Result 1262 states and 3295 transitions. [2022-02-10 02:50:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-10 02:50:05,268 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:50:05,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:05,270 INFO L225 Difference]: With dead ends: 1262 [2022-02-10 02:50:05,270 INFO L226 Difference]: Without dead ends: 1259 [2022-02-10 02:50:05,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1428, Invalid=3264, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 02:50:05,271 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 169 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:05,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 107 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:50:05,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2022-02-10 02:50:05,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 888. [2022-02-10 02:50:05,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 887 states have (on average 2.9086809470124013) internal successors, (2580), 887 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:05,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 2580 transitions. [2022-02-10 02:50:05,287 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 2580 transitions. Word has length 22 [2022-02-10 02:50:05,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:05,287 INFO L470 AbstractCegarLoop]: Abstraction has 888 states and 2580 transitions. [2022-02-10 02:50:05,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:05,287 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 2580 transitions. [2022-02-10 02:50:05,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:50:05,289 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:05,289 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:05,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:05,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:05,503 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:05,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:05,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1270881035, now seen corresponding path program 146 times [2022-02-10 02:50:05,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:05,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174711727] [2022-02-10 02:50:05,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:05,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:05,551 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:05,551 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:05,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174711727] [2022-02-10 02:50:05,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174711727] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:05,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846563964] [2022-02-10 02:50:05,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:50:05,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:05,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:05,552 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:05,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-02-10 02:50:05,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:50:05,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:05,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:50:05,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:05,699 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:05,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:05,738 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:05,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846563964] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:05,738 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:05,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 20 [2022-02-10 02:50:05,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045048299] [2022-02-10 02:50:05,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:05,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:50:05,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:05,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:50:05,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:50:05,739 INFO L87 Difference]: Start difference. First operand 888 states and 2580 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:06,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:06,344 INFO L93 Difference]: Finished difference Result 1293 states and 3393 transitions. [2022-02-10 02:50:06,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-10 02:50:06,344 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:50:06,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:06,346 INFO L225 Difference]: With dead ends: 1293 [2022-02-10 02:50:06,346 INFO L226 Difference]: Without dead ends: 1289 [2022-02-10 02:50:06,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1323, Invalid=3233, Unknown=0, NotChecked=0, Total=4556 [2022-02-10 02:50:06,347 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 148 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:06,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 117 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:50:06,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2022-02-10 02:50:06,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 917. [2022-02-10 02:50:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 916 states have (on average 2.9312227074235806) internal successors, (2685), 916 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 2685 transitions. [2022-02-10 02:50:06,366 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 2685 transitions. Word has length 22 [2022-02-10 02:50:06,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:06,366 INFO L470 AbstractCegarLoop]: Abstraction has 917 states and 2685 transitions. [2022-02-10 02:50:06,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:06,366 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 2685 transitions. [2022-02-10 02:50:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:50:06,367 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:06,367 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:06,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Ended with exit code 0 [2022-02-10 02:50:06,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:06,568 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:06,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:06,568 INFO L85 PathProgramCache]: Analyzing trace with hash 764534769, now seen corresponding path program 147 times [2022-02-10 02:50:06,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:06,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627915370] [2022-02-10 02:50:06,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:06,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:06,622 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:06,622 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:06,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627915370] [2022-02-10 02:50:06,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627915370] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:06,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337111860] [2022-02-10 02:50:06,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:50:06,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:06,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:06,623 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:06,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-02-10 02:50:06,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:50:06,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:06,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:50:06,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:06,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:06,795 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:06,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337111860] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:06,796 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:06,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 21 [2022-02-10 02:50:06,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585127149] [2022-02-10 02:50:06,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:06,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:50:06,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:06,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:50:06,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:50:06,796 INFO L87 Difference]: Start difference. First operand 917 states and 2685 transitions. Second operand has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:07,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:07,378 INFO L93 Difference]: Finished difference Result 1270 states and 3326 transitions. [2022-02-10 02:50:07,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 02:50:07,379 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:50:07,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:07,380 INFO L225 Difference]: With dead ends: 1270 [2022-02-10 02:50:07,380 INFO L226 Difference]: Without dead ends: 1264 [2022-02-10 02:50:07,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1277, Invalid=3279, Unknown=0, NotChecked=0, Total=4556 [2022-02-10 02:50:07,381 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 157 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:07,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 100 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:07,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2022-02-10 02:50:07,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 909. [2022-02-10 02:50:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 908 states have (on average 2.9317180616740086) internal successors, (2662), 908 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:07,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 2662 transitions. [2022-02-10 02:50:07,393 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 2662 transitions. Word has length 22 [2022-02-10 02:50:07,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:07,394 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 2662 transitions. [2022-02-10 02:50:07,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:07,394 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 2662 transitions. [2022-02-10 02:50:07,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:50:07,395 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:07,395 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:07,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2022-02-10 02:50:07,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:07,595 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:07,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:07,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2047297589, now seen corresponding path program 148 times [2022-02-10 02:50:07,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:07,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509824293] [2022-02-10 02:50:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:07,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:07,654 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:07,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509824293] [2022-02-10 02:50:07,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509824293] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:07,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486423172] [2022-02-10 02:50:07,654 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:50:07,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:07,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:07,655 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:07,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-02-10 02:50:07,678 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:50:07,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:07,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:50:07,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:07,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:07,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486423172] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:07,830 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:07,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2022-02-10 02:50:07,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040913954] [2022-02-10 02:50:07,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:07,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:50:07,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:07,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:50:07,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:50:07,831 INFO L87 Difference]: Start difference. First operand 909 states and 2662 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:08,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:08,353 INFO L93 Difference]: Finished difference Result 1209 states and 3200 transitions. [2022-02-10 02:50:08,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-10 02:50:08,354 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:50:08,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:08,367 INFO L225 Difference]: With dead ends: 1209 [2022-02-10 02:50:08,367 INFO L226 Difference]: Without dead ends: 1201 [2022-02-10 02:50:08,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1343 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1314, Invalid=3378, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 02:50:08,368 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 99 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:08,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 102 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:08,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2022-02-10 02:50:08,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 913. [2022-02-10 02:50:08,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 912 states have (on average 2.9221491228070176) internal successors, (2665), 912 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 2665 transitions. [2022-02-10 02:50:08,383 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 2665 transitions. Word has length 22 [2022-02-10 02:50:08,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:08,383 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 2665 transitions. [2022-02-10 02:50:08,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:08,383 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 2665 transitions. [2022-02-10 02:50:08,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:50:08,385 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:08,385 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:08,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:08,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:08,607 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:08,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:08,607 INFO L85 PathProgramCache]: Analyzing trace with hash -459003701, now seen corresponding path program 149 times [2022-02-10 02:50:08,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:08,607 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892087249] [2022-02-10 02:50:08,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:08,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:08,646 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:08,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892087249] [2022-02-10 02:50:08,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892087249] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:08,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405093998] [2022-02-10 02:50:08,646 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:50:08,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:08,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:08,647 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:08,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-02-10 02:50:08,670 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:50:08,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:08,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:50:08,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:08,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:08,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405093998] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:08,820 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:08,820 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 9] total 19 [2022-02-10 02:50:08,820 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695829107] [2022-02-10 02:50:08,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:08,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:50:08,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:08,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:50:08,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:50:08,821 INFO L87 Difference]: Start difference. First operand 913 states and 2665 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:09,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:09,219 INFO L93 Difference]: Finished difference Result 1887 states and 5114 transitions. [2022-02-10 02:50:09,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 02:50:09,219 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:50:09,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:09,222 INFO L225 Difference]: With dead ends: 1887 [2022-02-10 02:50:09,222 INFO L226 Difference]: Without dead ends: 1883 [2022-02-10 02:50:09,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=670, Invalid=1222, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:50:09,222 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 154 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:09,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 203 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:50:09,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2022-02-10 02:50:09,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1296. [2022-02-10 02:50:09,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1295 states have (on average 3.0486486486486486) internal successors, (3948), 1295 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:09,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 3948 transitions. [2022-02-10 02:50:09,241 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 3948 transitions. Word has length 22 [2022-02-10 02:50:09,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:09,241 INFO L470 AbstractCegarLoop]: Abstraction has 1296 states and 3948 transitions. [2022-02-10 02:50:09,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:09,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 3948 transitions. [2022-02-10 02:50:09,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:50:09,243 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:09,243 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:09,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Ended with exit code 0 [2022-02-10 02:50:09,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:09,443 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:09,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:09,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1675855123, now seen corresponding path program 150 times [2022-02-10 02:50:09,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:09,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561021282] [2022-02-10 02:50:09,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:09,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:09,482 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:09,482 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:09,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561021282] [2022-02-10 02:50:09,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561021282] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:09,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237741049] [2022-02-10 02:50:09,482 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:50:09,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:09,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:09,483 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:09,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-02-10 02:50:09,506 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:50:09,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:09,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:50:09,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:09,617 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:09,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:09,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237741049] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:09,657 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:09,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 9] total 19 [2022-02-10 02:50:09,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703167325] [2022-02-10 02:50:09,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:09,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:50:09,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:09,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:50:09,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:50:09,658 INFO L87 Difference]: Start difference. First operand 1296 states and 3948 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:10,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:10,383 INFO L93 Difference]: Finished difference Result 1679 states and 4611 transitions. [2022-02-10 02:50:10,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-10 02:50:10,383 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:50:10,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:10,385 INFO L225 Difference]: With dead ends: 1679 [2022-02-10 02:50:10,385 INFO L226 Difference]: Without dead ends: 1677 [2022-02-10 02:50:10,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1569, Invalid=3833, Unknown=0, NotChecked=0, Total=5402 [2022-02-10 02:50:10,386 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 178 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:10,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 110 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:50:10,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2022-02-10 02:50:10,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1240. [2022-02-10 02:50:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1239 states have (on average 3.020984665052462) internal successors, (3743), 1239 states have internal predecessors, (3743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:10,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 3743 transitions. [2022-02-10 02:50:10,402 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 3743 transitions. Word has length 22 [2022-02-10 02:50:10,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:10,403 INFO L470 AbstractCegarLoop]: Abstraction has 1240 states and 3743 transitions. [2022-02-10 02:50:10,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:10,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 3743 transitions. [2022-02-10 02:50:10,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:50:10,404 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:10,404 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:10,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2022-02-10 02:50:10,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2022-02-10 02:50:10,605 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:10,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:10,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1137999545, now seen corresponding path program 151 times [2022-02-10 02:50:10,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:10,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049044564] [2022-02-10 02:50:10,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:10,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:10,648 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:10,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049044564] [2022-02-10 02:50:10,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049044564] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:10,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125915248] [2022-02-10 02:50:10,648 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:50:10,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:10,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:10,649 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:10,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-02-10 02:50:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:10,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:50:10,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:10,784 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:10,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:10,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125915248] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:10,818 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:10,818 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 20 [2022-02-10 02:50:10,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781435945] [2022-02-10 02:50:10,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:10,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:50:10,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:10,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:50:10,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:50:10,819 INFO L87 Difference]: Start difference. First operand 1240 states and 3743 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:11,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:11,481 INFO L93 Difference]: Finished difference Result 1746 states and 4876 transitions. [2022-02-10 02:50:11,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-10 02:50:11,481 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:50:11,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:11,484 INFO L225 Difference]: With dead ends: 1746 [2022-02-10 02:50:11,484 INFO L226 Difference]: Without dead ends: 1742 [2022-02-10 02:50:11,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1387, Invalid=3583, Unknown=0, NotChecked=0, Total=4970 [2022-02-10 02:50:11,485 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 161 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:11,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 114 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:50:11,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2022-02-10 02:50:11,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1370. [2022-02-10 02:50:11,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.0672023374726076) internal successors, (4199), 1369 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:11,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 4199 transitions. [2022-02-10 02:50:11,510 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 4199 transitions. Word has length 22 [2022-02-10 02:50:11,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:11,510 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 4199 transitions. [2022-02-10 02:50:11,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:11,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 4199 transitions. [2022-02-10 02:50:11,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:50:11,513 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:11,513 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:11,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:11,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2022-02-10 02:50:11,735 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:11,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:11,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1644345811, now seen corresponding path program 152 times [2022-02-10 02:50:11,735 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:11,735 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649183240] [2022-02-10 02:50:11,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:11,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:11,784 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:11,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649183240] [2022-02-10 02:50:11,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649183240] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:11,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901718244] [2022-02-10 02:50:11,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:50:11,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:11,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:11,785 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:11,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-02-10 02:50:11,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:50:11,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:11,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:50:11,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:11,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:11,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901718244] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:11,961 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:11,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 21 [2022-02-10 02:50:11,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104130691] [2022-02-10 02:50:11,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:11,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:50:11,962 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:11,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:50:11,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:50:11,962 INFO L87 Difference]: Start difference. First operand 1370 states and 4199 transitions. Second operand has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:12,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:12,572 INFO L93 Difference]: Finished difference Result 1900 states and 5400 transitions. [2022-02-10 02:50:12,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-10 02:50:12,573 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:50:12,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:12,575 INFO L225 Difference]: With dead ends: 1900 [2022-02-10 02:50:12,575 INFO L226 Difference]: Without dead ends: 1894 [2022-02-10 02:50:12,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1257, Invalid=3435, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 02:50:12,576 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 179 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:12,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 109 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:50:12,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2022-02-10 02:50:12,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1515. [2022-02-10 02:50:12,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1514 states have (on average 3.103698811096433) internal successors, (4699), 1514 states have internal predecessors, (4699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:12,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 4699 transitions. [2022-02-10 02:50:12,599 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 4699 transitions. Word has length 22 [2022-02-10 02:50:12,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:12,599 INFO L470 AbstractCegarLoop]: Abstraction has 1515 states and 4699 transitions. [2022-02-10 02:50:12,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:12,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 4699 transitions. [2022-02-10 02:50:12,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:50:12,601 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:12,601 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:12,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Ended with exit code 0 [2022-02-10 02:50:12,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2022-02-10 02:50:12,801 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:12,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:12,801 INFO L85 PathProgramCache]: Analyzing trace with hash -161210873, now seen corresponding path program 153 times [2022-02-10 02:50:12,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:12,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256893071] [2022-02-10 02:50:12,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:12,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:12,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:12,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256893071] [2022-02-10 02:50:12,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256893071] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:12,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977524553] [2022-02-10 02:50:12,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:50:12,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:12,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:12,857 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:12,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-02-10 02:50:12,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:50:12,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:12,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:50:12,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:13,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:13,037 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:13,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977524553] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:13,037 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:13,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 22 [2022-02-10 02:50:13,037 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375286893] [2022-02-10 02:50:13,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:13,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:50:13,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:13,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:50:13,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:50:13,038 INFO L87 Difference]: Start difference. First operand 1515 states and 4699 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:13,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:13,622 INFO L93 Difference]: Finished difference Result 1928 states and 5497 transitions. [2022-02-10 02:50:13,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-10 02:50:13,622 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:50:13,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:13,625 INFO L225 Difference]: With dead ends: 1928 [2022-02-10 02:50:13,625 INFO L226 Difference]: Without dead ends: 1920 [2022-02-10 02:50:13,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1402 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1183, Invalid=3373, Unknown=0, NotChecked=0, Total=4556 [2022-02-10 02:50:13,626 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 152 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:13,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 105 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:13,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2022-02-10 02:50:13,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1541. [2022-02-10 02:50:13,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 3.1116883116883116) internal successors, (4792), 1540 states have internal predecessors, (4792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:13,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 4792 transitions. [2022-02-10 02:50:13,667 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 4792 transitions. Word has length 22 [2022-02-10 02:50:13,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:13,667 INFO L470 AbstractCegarLoop]: Abstraction has 1541 states and 4792 transitions. [2022-02-10 02:50:13,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:13,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 4792 transitions. [2022-02-10 02:50:13,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 02:50:13,670 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:13,670 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:13,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:13,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:13,879 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:13,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:13,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1428668051, now seen corresponding path program 154 times [2022-02-10 02:50:13,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:13,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633171812] [2022-02-10 02:50:13,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:13,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:13,941 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:13,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633171812] [2022-02-10 02:50:13,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633171812] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:13,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296669321] [2022-02-10 02:50:13,941 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:50:13,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:13,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:13,942 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:13,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-02-10 02:50:13,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:50:13,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:13,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:50:13,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:14,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:14,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296669321] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:14,132 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:14,132 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-02-10 02:50:14,132 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273316997] [2022-02-10 02:50:14,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:14,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:50:14,132 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:14,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:50:14,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:50:14,133 INFO L87 Difference]: Start difference. First operand 1541 states and 4792 transitions. Second operand has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:14,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:14,654 INFO L93 Difference]: Finished difference Result 1886 states and 5444 transitions. [2022-02-10 02:50:14,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 02:50:14,654 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 02:50:14,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:14,657 INFO L225 Difference]: With dead ends: 1886 [2022-02-10 02:50:14,657 INFO L226 Difference]: Without dead ends: 1876 [2022-02-10 02:50:14,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1393 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1194, Invalid=3362, Unknown=0, NotChecked=0, Total=4556 [2022-02-10 02:50:14,658 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 123 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:14,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 105 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:14,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2022-02-10 02:50:14,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1537. [2022-02-10 02:50:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 1536 states have (on average 3.1145833333333335) internal successors, (4784), 1536 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 4784 transitions. [2022-02-10 02:50:14,678 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 4784 transitions. Word has length 22 [2022-02-10 02:50:14,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:14,678 INFO L470 AbstractCegarLoop]: Abstraction has 1537 states and 4784 transitions. [2022-02-10 02:50:14,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 4784 transitions. [2022-02-10 02:50:14,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:14,680 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:14,680 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:14,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Ended with exit code 0 [2022-02-10 02:50:14,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:14,881 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:14,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:14,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1624815023, now seen corresponding path program 155 times [2022-02-10 02:50:14,881 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:14,881 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616993065] [2022-02-10 02:50:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:14,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:15,063 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:15,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616993065] [2022-02-10 02:50:15,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616993065] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:15,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211217970] [2022-02-10 02:50:15,063 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:50:15,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:15,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:15,064 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:15,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-02-10 02:50:15,089 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:50:15,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:15,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:15,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:15,337 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:15,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:15,621 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:15,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211217970] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:15,621 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:15,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 25 [2022-02-10 02:50:15,622 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236930505] [2022-02-10 02:50:15,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:15,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:50:15,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:15,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:50:15,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:50:15,622 INFO L87 Difference]: Start difference. First operand 1537 states and 4784 transitions. Second operand has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:16,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:16,148 INFO L93 Difference]: Finished difference Result 1708 states and 4978 transitions. [2022-02-10 02:50:16,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:50:16,149 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:16,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:16,151 INFO L225 Difference]: With dead ends: 1708 [2022-02-10 02:50:16,151 INFO L226 Difference]: Without dead ends: 1692 [2022-02-10 02:50:16,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:50:16,152 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 140 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:16,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 439 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:16,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-02-10 02:50:16,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1558. [2022-02-10 02:50:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1557 states have (on average 3.0892742453436095) internal successors, (4810), 1557 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 4810 transitions. [2022-02-10 02:50:16,170 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 4810 transitions. Word has length 23 [2022-02-10 02:50:16,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:16,171 INFO L470 AbstractCegarLoop]: Abstraction has 1558 states and 4810 transitions. [2022-02-10 02:50:16,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:16,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 4810 transitions. [2022-02-10 02:50:16,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:16,173 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:16,173 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:16,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Ended with exit code 0 [2022-02-10 02:50:16,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:16,373 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:16,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:16,373 INFO L85 PathProgramCache]: Analyzing trace with hash 994434735, now seen corresponding path program 156 times [2022-02-10 02:50:16,373 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:16,373 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651432499] [2022-02-10 02:50:16,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:16,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:16,523 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:16,523 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:16,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651432499] [2022-02-10 02:50:16,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651432499] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:16,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160394426] [2022-02-10 02:50:16,523 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:50:16,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:16,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:16,524 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:16,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-02-10 02:50:16,558 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:50:16,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:16,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:16,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:16,785 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:16,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:17,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160394426] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:17,152 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:17,152 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 30 [2022-02-10 02:50:17,153 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576222400] [2022-02-10 02:50:17,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:17,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 02:50:17,153 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:17,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 02:50:17,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:50:17,153 INFO L87 Difference]: Start difference. First operand 1558 states and 4810 transitions. Second operand has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:17,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:17,602 INFO L93 Difference]: Finished difference Result 1760 states and 5126 transitions. [2022-02-10 02:50:17,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:50:17,603 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:17,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:17,606 INFO L225 Difference]: With dead ends: 1760 [2022-02-10 02:50:17,606 INFO L226 Difference]: Without dead ends: 1756 [2022-02-10 02:50:17,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:50:17,606 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 160 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:17,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 705 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:17,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2022-02-10 02:50:17,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1603. [2022-02-10 02:50:17,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 3.099875156054931) internal successors, (4966), 1602 states have internal predecessors, (4966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:17,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 4966 transitions. [2022-02-10 02:50:17,627 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 4966 transitions. Word has length 23 [2022-02-10 02:50:17,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:17,627 INFO L470 AbstractCegarLoop]: Abstraction has 1603 states and 4966 transitions. [2022-02-10 02:50:17,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:17,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 4966 transitions. [2022-02-10 02:50:17,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:17,629 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:17,629 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:17,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Ended with exit code 0 [2022-02-10 02:50:17,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2022-02-10 02:50:17,830 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:17,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:17,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1838443115, now seen corresponding path program 157 times [2022-02-10 02:50:17,830 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:17,830 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384649250] [2022-02-10 02:50:17,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:17,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:17,997 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:17,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384649250] [2022-02-10 02:50:17,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384649250] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:17,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826606167] [2022-02-10 02:50:17,997 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:50:17,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:17,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:17,998 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:17,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-02-10 02:50:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:18,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:18,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:18,248 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:18,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:18,614 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:18,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826606167] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:18,614 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:18,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 31 [2022-02-10 02:50:18,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161156972] [2022-02-10 02:50:18,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:18,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:50:18,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:18,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:50:18,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:50:18,615 INFO L87 Difference]: Start difference. First operand 1603 states and 4966 transitions. Second operand has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:19,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:19,049 INFO L93 Difference]: Finished difference Result 1751 states and 5117 transitions. [2022-02-10 02:50:19,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:50:19,049 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:19,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:19,052 INFO L225 Difference]: With dead ends: 1751 [2022-02-10 02:50:19,052 INFO L226 Difference]: Without dead ends: 1740 [2022-02-10 02:50:19,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:50:19,052 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 150 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:19,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 638 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:19,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2022-02-10 02:50:19,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1575. [2022-02-10 02:50:19,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1574 states have (on average 3.090851334180432) internal successors, (4865), 1574 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 4865 transitions. [2022-02-10 02:50:19,074 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 4865 transitions. Word has length 23 [2022-02-10 02:50:19,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:19,074 INFO L470 AbstractCegarLoop]: Abstraction has 1575 states and 4865 transitions. [2022-02-10 02:50:19,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:19,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 4865 transitions. [2022-02-10 02:50:19,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:19,076 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:19,076 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:19,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Ended with exit code 0 [2022-02-10 02:50:19,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:19,277 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:19,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:19,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1000030421, now seen corresponding path program 158 times [2022-02-10 02:50:19,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:19,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908861636] [2022-02-10 02:50:19,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:19,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:19,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:19,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908861636] [2022-02-10 02:50:19,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908861636] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:19,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715007770] [2022-02-10 02:50:19,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:50:19,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:19,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:19,437 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:19,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-02-10 02:50:19,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:50:19,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:19,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:19,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:19,713 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:19,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:20,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715007770] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:20,160 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:20,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2022-02-10 02:50:20,161 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004643322] [2022-02-10 02:50:20,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:20,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:50:20,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:20,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:50:20,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:50:20,161 INFO L87 Difference]: Start difference. First operand 1575 states and 4865 transitions. Second operand has 30 states, 30 states have (on average 1.6) internal successors, (48), 29 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:20,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:20,574 INFO L93 Difference]: Finished difference Result 1725 states and 5019 transitions. [2022-02-10 02:50:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:50:20,574 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6) internal successors, (48), 29 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:20,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:20,577 INFO L225 Difference]: With dead ends: 1725 [2022-02-10 02:50:20,577 INFO L226 Difference]: Without dead ends: 1721 [2022-02-10 02:50:20,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=1014, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:50:20,578 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 156 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:20,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 537 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:20,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2022-02-10 02:50:20,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1575. [2022-02-10 02:50:20,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1574 states have (on average 3.090851334180432) internal successors, (4865), 1574 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:20,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 4865 transitions. [2022-02-10 02:50:20,597 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 4865 transitions. Word has length 23 [2022-02-10 02:50:20,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:20,597 INFO L470 AbstractCegarLoop]: Abstraction has 1575 states and 4865 transitions. [2022-02-10 02:50:20,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6) internal successors, (48), 29 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:20,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 4865 transitions. [2022-02-10 02:50:20,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:20,600 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:20,600 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:20,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2022-02-10 02:50:20,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:20,822 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:20,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1596059183, now seen corresponding path program 159 times [2022-02-10 02:50:20,822 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:20,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437915892] [2022-02-10 02:50:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:20,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:20,986 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:20,986 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:20,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437915892] [2022-02-10 02:50:20,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437915892] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:20,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677972872] [2022-02-10 02:50:20,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:50:20,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:20,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:20,988 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:20,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-02-10 02:50:21,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:50:21,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:21,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:21,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:21,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:21,593 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:21,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677972872] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:21,593 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:21,594 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2022-02-10 02:50:21,594 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014240599] [2022-02-10 02:50:21,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:21,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 02:50:21,594 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:21,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 02:50:21,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:50:21,594 INFO L87 Difference]: Start difference. First operand 1575 states and 4865 transitions. Second operand has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:22,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:22,024 INFO L93 Difference]: Finished difference Result 1731 states and 5025 transitions. [2022-02-10 02:50:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:50:22,024 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:22,027 INFO L225 Difference]: With dead ends: 1731 [2022-02-10 02:50:22,027 INFO L226 Difference]: Without dead ends: 1727 [2022-02-10 02:50:22,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=1013, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:50:22,028 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 169 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:22,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 473 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:22,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2022-02-10 02:50:22,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1575. [2022-02-10 02:50:22,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1574 states have (on average 3.090851334180432) internal successors, (4865), 1574 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:22,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 4865 transitions. [2022-02-10 02:50:22,052 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 4865 transitions. Word has length 23 [2022-02-10 02:50:22,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:22,052 INFO L470 AbstractCegarLoop]: Abstraction has 1575 states and 4865 transitions. [2022-02-10 02:50:22,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 4865 transitions. [2022-02-10 02:50:22,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:22,055 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:22,055 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:22,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:22,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:22,276 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:22,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:22,277 INFO L85 PathProgramCache]: Analyzing trace with hash 470458283, now seen corresponding path program 160 times [2022-02-10 02:50:22,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:22,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412946702] [2022-02-10 02:50:22,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:22,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:22,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:22,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412946702] [2022-02-10 02:50:22,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412946702] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:22,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795866478] [2022-02-10 02:50:22,447 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:50:22,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:22,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:22,448 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:22,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-02-10 02:50:22,484 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:50:22,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:22,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:22,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:22,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:23,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795866478] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:23,034 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:23,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2022-02-10 02:50:23,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685520378] [2022-02-10 02:50:23,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:23,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 02:50:23,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:23,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 02:50:23,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:50:23,035 INFO L87 Difference]: Start difference. First operand 1575 states and 4865 transitions. Second operand has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 27 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:23,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:23,522 INFO L93 Difference]: Finished difference Result 1731 states and 5023 transitions. [2022-02-10 02:50:23,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:50:23,522 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 27 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:23,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:23,525 INFO L225 Difference]: With dead ends: 1731 [2022-02-10 02:50:23,525 INFO L226 Difference]: Without dead ends: 1727 [2022-02-10 02:50:23,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:50:23,526 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 129 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:23,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 471 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:23,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2022-02-10 02:50:23,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1575. [2022-02-10 02:50:23,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1574 states have (on average 3.090851334180432) internal successors, (4865), 1574 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:23,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 4865 transitions. [2022-02-10 02:50:23,547 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 4865 transitions. Word has length 23 [2022-02-10 02:50:23,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:23,547 INFO L470 AbstractCegarLoop]: Abstraction has 1575 states and 4865 transitions. [2022-02-10 02:50:23,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 27 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:23,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 4865 transitions. [2022-02-10 02:50:23,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:23,550 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:23,550 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:23,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Ended with exit code 0 [2022-02-10 02:50:23,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:23,750 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:23,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:23,751 INFO L85 PathProgramCache]: Analyzing trace with hash -63431249, now seen corresponding path program 161 times [2022-02-10 02:50:23,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:23,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335042538] [2022-02-10 02:50:23,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:23,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:23,935 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:23,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335042538] [2022-02-10 02:50:23,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335042538] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:23,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719251355] [2022-02-10 02:50:23,935 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:50:23,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:23,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:23,936 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:23,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2022-02-10 02:50:23,961 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:50:23,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:23,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:23,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:24,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:24,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719251355] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:24,535 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:24,535 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2022-02-10 02:50:24,535 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309912091] [2022-02-10 02:50:24,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:24,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:50:24,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:24,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:50:24,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:50:24,536 INFO L87 Difference]: Start difference. First operand 1575 states and 4865 transitions. Second operand has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:25,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:25,115 INFO L93 Difference]: Finished difference Result 1691 states and 4982 transitions. [2022-02-10 02:50:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:50:25,115 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:25,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:25,118 INFO L225 Difference]: With dead ends: 1691 [2022-02-10 02:50:25,118 INFO L226 Difference]: Without dead ends: 1687 [2022-02-10 02:50:25,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:50:25,119 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 99 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:25,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 525 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:25,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2022-02-10 02:50:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1576. [2022-02-10 02:50:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 3.0895238095238096) internal successors, (4866), 1575 states have internal predecessors, (4866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:25,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 4866 transitions. [2022-02-10 02:50:25,147 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 4866 transitions. Word has length 23 [2022-02-10 02:50:25,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:25,147 INFO L470 AbstractCegarLoop]: Abstraction has 1576 states and 4866 transitions. [2022-02-10 02:50:25,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:25,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 4866 transitions. [2022-02-10 02:50:25,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:25,149 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:25,149 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:25,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Ended with exit code 0 [2022-02-10 02:50:25,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2022-02-10 02:50:25,350 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:25,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:25,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1638304363, now seen corresponding path program 162 times [2022-02-10 02:50:25,350 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:25,350 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477431961] [2022-02-10 02:50:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:25,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:25,497 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:25,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477431961] [2022-02-10 02:50:25,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477431961] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:25,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525037585] [2022-02-10 02:50:25,497 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:50:25,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:25,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:25,498 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:25,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2022-02-10 02:50:25,523 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:50:25,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:25,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:25,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:25,791 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:25,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:26,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525037585] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:26,178 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:26,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14] total 30 [2022-02-10 02:50:26,178 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283223107] [2022-02-10 02:50:26,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:26,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 02:50:26,178 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:26,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 02:50:26,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:50:26,178 INFO L87 Difference]: Start difference. First operand 1576 states and 4866 transitions. Second operand has 31 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:26,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:26,526 INFO L93 Difference]: Finished difference Result 1701 states and 5067 transitions. [2022-02-10 02:50:26,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:50:26,526 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:26,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:26,528 INFO L225 Difference]: With dead ends: 1701 [2022-02-10 02:50:26,529 INFO L226 Difference]: Without dead ends: 1697 [2022-02-10 02:50:26,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=954, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:50:26,529 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 112 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:26,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 516 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:26,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2022-02-10 02:50:26,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1595. [2022-02-10 02:50:26,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 3.095357590966123) internal successors, (4934), 1594 states have internal predecessors, (4934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:26,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 4934 transitions. [2022-02-10 02:50:26,560 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 4934 transitions. Word has length 23 [2022-02-10 02:50:26,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:26,560 INFO L470 AbstractCegarLoop]: Abstraction has 1595 states and 4934 transitions. [2022-02-10 02:50:26,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:26,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 4934 transitions. [2022-02-10 02:50:26,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:26,562 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:26,562 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:26,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:26,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:26,762 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:26,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:26,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1812654553, now seen corresponding path program 163 times [2022-02-10 02:50:26,763 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:26,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16711111] [2022-02-10 02:50:26,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:26,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:26,948 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:26,948 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:26,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16711111] [2022-02-10 02:50:26,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16711111] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:26,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846994968] [2022-02-10 02:50:26,948 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:50:26,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:26,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:26,949 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:26,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2022-02-10 02:50:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:26,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:26,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:27,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:27,647 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:27,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846994968] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:27,647 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:27,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14] total 31 [2022-02-10 02:50:27,647 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028477506] [2022-02-10 02:50:27,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:27,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:50:27,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:27,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:50:27,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:50:27,648 INFO L87 Difference]: Start difference. First operand 1595 states and 4934 transitions. Second operand has 32 states, 32 states have (on average 1.78125) internal successors, (57), 31 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:27,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:27,913 INFO L93 Difference]: Finished difference Result 1701 states and 5067 transitions. [2022-02-10 02:50:27,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:50:27,913 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.78125) internal successors, (57), 31 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:27,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:27,916 INFO L225 Difference]: With dead ends: 1701 [2022-02-10 02:50:27,916 INFO L226 Difference]: Without dead ends: 1696 [2022-02-10 02:50:27,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=109, Invalid=1013, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:50:27,917 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 167 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:27,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 387 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:50:27,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2022-02-10 02:50:27,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1595. [2022-02-10 02:50:27,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 3.095357590966123) internal successors, (4934), 1594 states have internal predecessors, (4934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:27,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 4934 transitions. [2022-02-10 02:50:27,950 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 4934 transitions. Word has length 23 [2022-02-10 02:50:27,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:27,950 INFO L470 AbstractCegarLoop]: Abstraction has 1595 states and 4934 transitions. [2022-02-10 02:50:27,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.78125) internal successors, (57), 31 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:27,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 4934 transitions. [2022-02-10 02:50:27,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:27,952 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:27,952 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:27,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Ended with exit code 0 [2022-02-10 02:50:28,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2022-02-10 02:50:28,153 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:28,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:28,153 INFO L85 PathProgramCache]: Analyzing trace with hash 421452941, now seen corresponding path program 164 times [2022-02-10 02:50:28,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:28,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575867427] [2022-02-10 02:50:28,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:28,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:28,317 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:28,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575867427] [2022-02-10 02:50:28,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575867427] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:28,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951327897] [2022-02-10 02:50:28,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:50:28,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:28,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:28,319 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:28,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2022-02-10 02:50:28,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:50:28,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:28,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:28,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:28,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:28,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951327897] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:28,964 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:28,964 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14] total 29 [2022-02-10 02:50:28,964 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757532042] [2022-02-10 02:50:28,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:28,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:50:28,965 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:28,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:50:28,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:50:28,965 INFO L87 Difference]: Start difference. First operand 1595 states and 4934 transitions. Second operand has 30 states, 30 states have (on average 1.8) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:29,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:29,283 INFO L93 Difference]: Finished difference Result 1680 states and 5029 transitions. [2022-02-10 02:50:29,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:50:29,283 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:29,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:29,286 INFO L225 Difference]: With dead ends: 1680 [2022-02-10 02:50:29,286 INFO L226 Difference]: Without dead ends: 1675 [2022-02-10 02:50:29,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 10 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:50:29,286 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 84 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:29,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 468 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:29,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2022-02-10 02:50:29,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1595. [2022-02-10 02:50:29,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 3.095357590966123) internal successors, (4934), 1594 states have internal predecessors, (4934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 4934 transitions. [2022-02-10 02:50:29,317 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 4934 transitions. Word has length 23 [2022-02-10 02:50:29,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:29,317 INFO L470 AbstractCegarLoop]: Abstraction has 1595 states and 4934 transitions. [2022-02-10 02:50:29,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:29,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 4934 transitions. [2022-02-10 02:50:29,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:29,319 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:29,319 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:29,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:29,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2022-02-10 02:50:29,519 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:29,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:29,520 INFO L85 PathProgramCache]: Analyzing trace with hash 123426351, now seen corresponding path program 165 times [2022-02-10 02:50:29,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:29,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100896773] [2022-02-10 02:50:29,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:29,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:29,691 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:29,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:29,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100896773] [2022-02-10 02:50:29,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100896773] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:29,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225169919] [2022-02-10 02:50:29,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:50:29,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:29,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:29,696 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:29,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2022-02-10 02:50:29,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:50:29,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:29,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:29,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:29,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:30,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225169919] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:30,352 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:30,352 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 14] total 30 [2022-02-10 02:50:30,352 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693447656] [2022-02-10 02:50:30,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:30,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 02:50:30,352 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:30,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 02:50:30,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:50:30,352 INFO L87 Difference]: Start difference. First operand 1595 states and 4934 transitions. Second operand has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:30,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:30,754 INFO L93 Difference]: Finished difference Result 1862 states and 5495 transitions. [2022-02-10 02:50:30,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:50:30,755 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:30,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:30,757 INFO L225 Difference]: With dead ends: 1862 [2022-02-10 02:50:30,758 INFO L226 Difference]: Without dead ends: 1852 [2022-02-10 02:50:30,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=1064, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:50:30,758 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 219 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:30,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 521 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:30,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2022-02-10 02:50:30,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1678. [2022-02-10 02:50:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1677 states have (on average 3.118067978533095) internal successors, (5229), 1677 states have internal predecessors, (5229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:30,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 5229 transitions. [2022-02-10 02:50:30,788 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 5229 transitions. Word has length 23 [2022-02-10 02:50:30,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:30,789 INFO L470 AbstractCegarLoop]: Abstraction has 1678 states and 5229 transitions. [2022-02-10 02:50:30,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:30,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 5229 transitions. [2022-02-10 02:50:30,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:30,791 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:30,791 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:30,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Ended with exit code 0 [2022-02-10 02:50:30,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:30,991 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:30,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:30,992 INFO L85 PathProgramCache]: Analyzing trace with hash 967434731, now seen corresponding path program 166 times [2022-02-10 02:50:30,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:30,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159729957] [2022-02-10 02:50:30,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:30,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:31,142 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:31,142 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159729957] [2022-02-10 02:50:31,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159729957] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:31,142 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076751329] [2022-02-10 02:50:31,142 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:50:31,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:31,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:31,143 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:31,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2022-02-10 02:50:31,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:50:31,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:31,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:31,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:31,414 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:31,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:31,794 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:31,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076751329] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:31,794 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:31,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 14] total 31 [2022-02-10 02:50:31,794 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159542608] [2022-02-10 02:50:31,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:31,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:50:31,794 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:31,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:50:31,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:50:31,795 INFO L87 Difference]: Start difference. First operand 1678 states and 5229 transitions. Second operand has 32 states, 32 states have (on average 1.75) internal successors, (56), 31 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:32,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:32,248 INFO L93 Difference]: Finished difference Result 1859 states and 5482 transitions. [2022-02-10 02:50:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:50:32,248 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.75) internal successors, (56), 31 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:32,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:32,261 INFO L225 Difference]: With dead ends: 1859 [2022-02-10 02:50:32,261 INFO L226 Difference]: Without dead ends: 1847 [2022-02-10 02:50:32,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:50:32,261 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 153 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:32,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 695 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:32,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2022-02-10 02:50:32,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1665. [2022-02-10 02:50:32,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1664 states have (on average 3.105168269230769) internal successors, (5167), 1664 states have internal predecessors, (5167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:32,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 5167 transitions. [2022-02-10 02:50:32,283 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 5167 transitions. Word has length 23 [2022-02-10 02:50:32,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:32,283 INFO L470 AbstractCegarLoop]: Abstraction has 1665 states and 5167 transitions. [2022-02-10 02:50:32,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.75) internal successors, (56), 31 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:32,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 5167 transitions. [2022-02-10 02:50:32,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:32,285 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:32,285 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:32,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Ended with exit code 0 [2022-02-10 02:50:32,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2022-02-10 02:50:32,486 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:32,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:32,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1093425071, now seen corresponding path program 167 times [2022-02-10 02:50:32,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:32,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222992115] [2022-02-10 02:50:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:32,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:32,635 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:32,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:32,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222992115] [2022-02-10 02:50:32,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222992115] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:32,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004559931] [2022-02-10 02:50:32,636 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:50:32,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:32,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:32,637 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:32,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2022-02-10 02:50:32,663 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:50:32,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:32,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:32,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:32,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:33,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004559931] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:33,268 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:33,268 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 14] total 29 [2022-02-10 02:50:33,268 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848146169] [2022-02-10 02:50:33,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:33,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:50:33,269 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:33,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:50:33,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:50:33,269 INFO L87 Difference]: Start difference. First operand 1665 states and 5167 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:33,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:33,750 INFO L93 Difference]: Finished difference Result 1820 states and 5367 transitions. [2022-02-10 02:50:33,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:50:33,750 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:33,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:33,753 INFO L225 Difference]: With dead ends: 1820 [2022-02-10 02:50:33,753 INFO L226 Difference]: Without dead ends: 1808 [2022-02-10 02:50:33,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 9 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:50:33,754 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 141 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:33,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 615 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:33,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2022-02-10 02:50:33,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1661. [2022-02-10 02:50:33,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1660 states have (on average 3.1012048192771084) internal successors, (5148), 1660 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:33,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 5148 transitions. [2022-02-10 02:50:33,785 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 5148 transitions. Word has length 23 [2022-02-10 02:50:33,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:33,785 INFO L470 AbstractCegarLoop]: Abstraction has 1661 states and 5148 transitions. [2022-02-10 02:50:33,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:33,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 5148 transitions. [2022-02-10 02:50:33,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:33,788 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:33,788 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:33,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Ended with exit code 0 [2022-02-10 02:50:33,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:33,995 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:33,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:33,996 INFO L85 PathProgramCache]: Analyzing trace with hash -555569493, now seen corresponding path program 168 times [2022-02-10 02:50:33,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:33,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009927428] [2022-02-10 02:50:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:33,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:34,152 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:34,152 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:34,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009927428] [2022-02-10 02:50:34,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009927428] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:34,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985449136] [2022-02-10 02:50:34,153 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:50:34,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:34,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:34,154 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:34,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2022-02-10 02:50:34,181 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:50:34,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:34,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:34,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:34,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:34,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985449136] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:34,822 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:34,822 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 14] total 28 [2022-02-10 02:50:34,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753347185] [2022-02-10 02:50:34,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:34,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 02:50:34,822 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:34,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 02:50:34,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:50:34,823 INFO L87 Difference]: Start difference. First operand 1661 states and 5148 transitions. Second operand has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 28 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:35,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:35,213 INFO L93 Difference]: Finished difference Result 1784 states and 5293 transitions. [2022-02-10 02:50:35,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:50:35,214 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 28 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:35,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:35,216 INFO L225 Difference]: With dead ends: 1784 [2022-02-10 02:50:35,216 INFO L226 Difference]: Without dead ends: 1779 [2022-02-10 02:50:35,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=954, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:50:35,217 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 134 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:35,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 455 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:35,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2022-02-10 02:50:35,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1662. [2022-02-10 02:50:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1661 states have (on average 3.0999397953040337) internal successors, (5149), 1661 states have internal predecessors, (5149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 5149 transitions. [2022-02-10 02:50:35,241 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 5149 transitions. Word has length 23 [2022-02-10 02:50:35,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:35,241 INFO L470 AbstractCegarLoop]: Abstraction has 1662 states and 5149 transitions. [2022-02-10 02:50:35,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 28 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:35,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 5149 transitions. [2022-02-10 02:50:35,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:35,243 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:35,243 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:35,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Ended with exit code 0 [2022-02-10 02:50:35,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:35,444 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:35,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:35,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1913051221, now seen corresponding path program 169 times [2022-02-10 02:50:35,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:35,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839424578] [2022-02-10 02:50:35,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:35,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:35,591 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:35,592 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:35,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839424578] [2022-02-10 02:50:35,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839424578] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:35,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778829405] [2022-02-10 02:50:35,592 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:50:35,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:35,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:35,593 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:35,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2022-02-10 02:50:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:35,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:35,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:35,883 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:35,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:36,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778829405] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:36,251 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:36,251 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14] total 29 [2022-02-10 02:50:36,251 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725549395] [2022-02-10 02:50:36,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:36,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:50:36,252 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:36,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:50:36,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:50:36,252 INFO L87 Difference]: Start difference. First operand 1662 states and 5149 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:36,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:36,537 INFO L93 Difference]: Finished difference Result 1767 states and 5261 transitions. [2022-02-10 02:50:36,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:50:36,537 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:36,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:36,540 INFO L225 Difference]: With dead ends: 1767 [2022-02-10 02:50:36,540 INFO L226 Difference]: Without dead ends: 1760 [2022-02-10 02:50:36,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 10 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:50:36,540 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 237 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:36,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 363 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:50:36,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2022-02-10 02:50:36,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1657. [2022-02-10 02:50:36,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1656 states have (on average 3.0972222222222223) internal successors, (5129), 1656 states have internal predecessors, (5129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:36,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 5129 transitions. [2022-02-10 02:50:36,569 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 5129 transitions. Word has length 23 [2022-02-10 02:50:36,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:36,569 INFO L470 AbstractCegarLoop]: Abstraction has 1657 states and 5129 transitions. [2022-02-10 02:50:36,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 5129 transitions. [2022-02-10 02:50:36,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:36,572 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:36,572 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:36,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Ended with exit code 0 [2022-02-10 02:50:36,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:36,787 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:36,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:36,788 INFO L85 PathProgramCache]: Analyzing trace with hash 406848235, now seen corresponding path program 170 times [2022-02-10 02:50:36,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:36,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004500790] [2022-02-10 02:50:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:36,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:36,937 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:36,937 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:36,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004500790] [2022-02-10 02:50:36,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004500790] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:36,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562078243] [2022-02-10 02:50:36,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:50:36,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:36,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:36,939 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:36,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2022-02-10 02:50:36,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:50:36,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:36,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:36,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:37,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:37,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562078243] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:37,541 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:37,541 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 30 [2022-02-10 02:50:37,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880993174] [2022-02-10 02:50:37,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:37,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 02:50:37,542 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:37,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 02:50:37,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:50:37,542 INFO L87 Difference]: Start difference. First operand 1657 states and 5129 transitions. Second operand has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:37,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:37,941 INFO L93 Difference]: Finished difference Result 1903 states and 5640 transitions. [2022-02-10 02:50:37,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:50:37,941 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:37,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:37,945 INFO L225 Difference]: With dead ends: 1903 [2022-02-10 02:50:37,945 INFO L226 Difference]: Without dead ends: 1893 [2022-02-10 02:50:37,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=1064, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:50:37,945 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 226 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:37,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 485 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:37,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2022-02-10 02:50:37,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1739. [2022-02-10 02:50:37,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1738 states have (on average 3.1231300345224398) internal successors, (5428), 1738 states have internal predecessors, (5428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:37,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 5428 transitions. [2022-02-10 02:50:37,969 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 5428 transitions. Word has length 23 [2022-02-10 02:50:37,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:37,969 INFO L470 AbstractCegarLoop]: Abstraction has 1739 states and 5428 transitions. [2022-02-10 02:50:37,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:37,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 5428 transitions. [2022-02-10 02:50:37,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:37,971 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:37,971 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:37,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Ended with exit code 0 [2022-02-10 02:50:38,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable175 [2022-02-10 02:50:38,172 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:38,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:38,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1250856615, now seen corresponding path program 171 times [2022-02-10 02:50:38,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:38,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462236569] [2022-02-10 02:50:38,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:38,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:38,355 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:38,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462236569] [2022-02-10 02:50:38,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462236569] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:38,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247190687] [2022-02-10 02:50:38,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:50:38,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:38,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:38,356 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:38,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2022-02-10 02:50:38,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:50:38,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:38,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:38,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:38,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:38,968 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:38,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247190687] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:38,968 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:38,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 31 [2022-02-10 02:50:38,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537033101] [2022-02-10 02:50:38,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:38,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:50:38,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:38,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:50:38,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:50:38,969 INFO L87 Difference]: Start difference. First operand 1739 states and 5428 transitions. Second operand has 32 states, 32 states have (on average 1.71875) internal successors, (55), 31 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:39,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:39,388 INFO L93 Difference]: Finished difference Result 1902 states and 5636 transitions. [2022-02-10 02:50:39,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:50:39,388 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.71875) internal successors, (55), 31 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:39,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:39,391 INFO L225 Difference]: With dead ends: 1902 [2022-02-10 02:50:39,391 INFO L226 Difference]: Without dead ends: 1890 [2022-02-10 02:50:39,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:50:39,392 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 203 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:39,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 610 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:39,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2022-02-10 02:50:39,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1722. [2022-02-10 02:50:39,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1721 states have (on average 3.1092388146426497) internal successors, (5351), 1721 states have internal predecessors, (5351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:39,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 5351 transitions. [2022-02-10 02:50:39,414 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 5351 transitions. Word has length 23 [2022-02-10 02:50:39,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:39,414 INFO L470 AbstractCegarLoop]: Abstraction has 1722 states and 5351 transitions. [2022-02-10 02:50:39,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.71875) internal successors, (55), 31 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 5351 transitions. [2022-02-10 02:50:39,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:39,416 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:39,416 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:39,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:39,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:39,617 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:39,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:39,617 INFO L85 PathProgramCache]: Analyzing trace with hash -810003187, now seen corresponding path program 172 times [2022-02-10 02:50:39,617 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:39,617 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469594547] [2022-02-10 02:50:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:39,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:39,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:39,786 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:39,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469594547] [2022-02-10 02:50:39,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469594547] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:39,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347654147] [2022-02-10 02:50:39,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:50:39,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:39,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:39,788 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:39,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2022-02-10 02:50:39,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:50:39,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:39,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:39,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:40,040 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:40,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:40,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347654147] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:40,395 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:40,395 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 29 [2022-02-10 02:50:40,395 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222508312] [2022-02-10 02:50:40,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:40,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:50:40,395 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:40,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:50:40,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:50:40,396 INFO L87 Difference]: Start difference. First operand 1722 states and 5351 transitions. Second operand has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:40,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:40,868 INFO L93 Difference]: Finished difference Result 1885 states and 5544 transitions. [2022-02-10 02:50:40,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:50:40,868 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:40,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:40,871 INFO L225 Difference]: With dead ends: 1885 [2022-02-10 02:50:40,871 INFO L226 Difference]: Without dead ends: 1872 [2022-02-10 02:50:40,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:50:40,872 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 136 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:40,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 634 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:40,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2022-02-10 02:50:40,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1711. [2022-02-10 02:50:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1710 states have (on average 3.101754385964912) internal successors, (5304), 1710 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:40,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 5304 transitions. [2022-02-10 02:50:40,893 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 5304 transitions. Word has length 23 [2022-02-10 02:50:40,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:40,893 INFO L470 AbstractCegarLoop]: Abstraction has 1711 states and 5304 transitions. [2022-02-10 02:50:40,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:40,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 5304 transitions. [2022-02-10 02:50:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:40,895 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:40,895 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:40,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Ended with exit code 0 [2022-02-10 02:50:41,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177,174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:41,096 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:41,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:41,096 INFO L85 PathProgramCache]: Analyzing trace with hash -272147609, now seen corresponding path program 173 times [2022-02-10 02:50:41,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:41,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940928495] [2022-02-10 02:50:41,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:41,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:41,252 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:41,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940928495] [2022-02-10 02:50:41,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940928495] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:41,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136001945] [2022-02-10 02:50:41,252 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:50:41,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:41,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:41,253 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:41,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2022-02-10 02:50:41,278 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:50:41,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:41,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:41,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:41,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:41,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136001945] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:41,855 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:41,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 28 [2022-02-10 02:50:41,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060662363] [2022-02-10 02:50:41,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:41,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 02:50:41,856 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:41,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 02:50:41,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:50:41,856 INFO L87 Difference]: Start difference. First operand 1711 states and 5304 transitions. Second operand has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:42,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:42,307 INFO L93 Difference]: Finished difference Result 1848 states and 5461 transitions. [2022-02-10 02:50:42,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:50:42,307 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:42,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:42,310 INFO L225 Difference]: With dead ends: 1848 [2022-02-10 02:50:42,310 INFO L226 Difference]: Without dead ends: 1835 [2022-02-10 02:50:42,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=1068, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:50:42,311 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 173 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:42,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 499 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:42,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2022-02-10 02:50:42,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1702. [2022-02-10 02:50:42,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1701 states have (on average 3.101704879482657) internal successors, (5276), 1701 states have internal predecessors, (5276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:42,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 5276 transitions. [2022-02-10 02:50:42,332 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 5276 transitions. Word has length 23 [2022-02-10 02:50:42,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:42,332 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 5276 transitions. [2022-02-10 02:50:42,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:42,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 5276 transitions. [2022-02-10 02:50:42,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:42,334 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:42,334 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:42,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:42,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2022-02-10 02:50:42,535 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:42,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:42,535 INFO L85 PathProgramCache]: Analyzing trace with hash -778493875, now seen corresponding path program 174 times [2022-02-10 02:50:42,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:42,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619632618] [2022-02-10 02:50:42,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:42,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:42,705 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:42,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619632618] [2022-02-10 02:50:42,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619632618] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:42,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812628376] [2022-02-10 02:50:42,705 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:50:42,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:42,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:42,706 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:42,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2022-02-10 02:50:42,731 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:50:42,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:42,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:42,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:42,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:43,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812628376] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:43,290 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:43,290 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 27 [2022-02-10 02:50:43,291 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253328102] [2022-02-10 02:50:43,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:43,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 02:50:43,291 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:43,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 02:50:43,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:50:43,291 INFO L87 Difference]: Start difference. First operand 1702 states and 5276 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:43,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:43,809 INFO L93 Difference]: Finished difference Result 1810 states and 5394 transitions. [2022-02-10 02:50:43,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:50:43,809 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:43,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:43,812 INFO L225 Difference]: With dead ends: 1810 [2022-02-10 02:50:43,812 INFO L226 Difference]: Without dead ends: 1805 [2022-02-10 02:50:43,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:50:43,813 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 125 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:43,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 607 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:43,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2022-02-10 02:50:43,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1704. [2022-02-10 02:50:43,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 3.099236641221374) internal successors, (5278), 1703 states have internal predecessors, (5278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 5278 transitions. [2022-02-10 02:50:43,834 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 5278 transitions. Word has length 23 [2022-02-10 02:50:43,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:43,834 INFO L470 AbstractCegarLoop]: Abstraction has 1704 states and 5278 transitions. [2022-02-10 02:50:43,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:43,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 5278 transitions. [2022-02-10 02:50:43,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:43,836 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:43,837 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:43,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Ended with exit code 0 [2022-02-10 02:50:44,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2022-02-10 02:50:44,037 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:44,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:44,037 INFO L85 PathProgramCache]: Analyzing trace with hash -743831057, now seen corresponding path program 175 times [2022-02-10 02:50:44,037 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:44,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505574645] [2022-02-10 02:50:44,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:44,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:44,217 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:44,217 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:44,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505574645] [2022-02-10 02:50:44,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505574645] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:44,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921276103] [2022-02-10 02:50:44,217 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:50:44,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:44,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:44,219 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:44,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2022-02-10 02:50:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:44,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:44,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:44,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:44,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921276103] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:44,867 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:44,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14] total 29 [2022-02-10 02:50:44,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767462056] [2022-02-10 02:50:44,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:44,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:50:44,867 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:44,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:50:44,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:50:44,867 INFO L87 Difference]: Start difference. First operand 1704 states and 5278 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:45,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:45,160 INFO L93 Difference]: Finished difference Result 1784 states and 5362 transitions. [2022-02-10 02:50:45,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:50:45,160 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:45,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:45,163 INFO L225 Difference]: With dead ends: 1784 [2022-02-10 02:50:45,163 INFO L226 Difference]: Without dead ends: 1777 [2022-02-10 02:50:45,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 10 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:50:45,163 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 133 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:45,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 385 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:50:45,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2022-02-10 02:50:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1700. [2022-02-10 02:50:45,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1699 states have (on average 3.097704532077693) internal successors, (5263), 1699 states have internal predecessors, (5263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:45,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 5263 transitions. [2022-02-10 02:50:45,184 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 5263 transitions. Word has length 23 [2022-02-10 02:50:45,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:45,184 INFO L470 AbstractCegarLoop]: Abstraction has 1700 states and 5263 transitions. [2022-02-10 02:50:45,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:45,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 5263 transitions. [2022-02-10 02:50:45,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:45,186 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:45,186 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:45,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Ended with exit code 0 [2022-02-10 02:50:45,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:45,387 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:45,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:45,387 INFO L85 PathProgramCache]: Analyzing trace with hash 602992047, now seen corresponding path program 176 times [2022-02-10 02:50:45,387 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:45,387 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233883080] [2022-02-10 02:50:45,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:45,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:45,527 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:45,527 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:45,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233883080] [2022-02-10 02:50:45,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233883080] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:45,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883219508] [2022-02-10 02:50:45,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:50:45,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:45,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:45,529 INFO L229 MonitoredProcess]: Starting monitored process 178 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:45,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2022-02-10 02:50:45,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:50:45,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:45,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:45,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:45,752 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:45,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:46,149 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:46,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883219508] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:46,149 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:46,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 30 [2022-02-10 02:50:46,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387172314] [2022-02-10 02:50:46,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:46,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 02:50:46,151 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:46,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 02:50:46,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:50:46,151 INFO L87 Difference]: Start difference. First operand 1700 states and 5263 transitions. Second operand has 31 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 30 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:46,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:46,635 INFO L93 Difference]: Finished difference Result 1929 states and 5703 transitions. [2022-02-10 02:50:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:50:46,636 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 30 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:46,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:46,639 INFO L225 Difference]: With dead ends: 1929 [2022-02-10 02:50:46,639 INFO L226 Difference]: Without dead ends: 1919 [2022-02-10 02:50:46,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=1064, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:50:46,640 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 143 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:46,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 696 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:46,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2022-02-10 02:50:46,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1772. [2022-02-10 02:50:46,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1771 states have (on average 3.1202710333145114) internal successors, (5526), 1771 states have internal predecessors, (5526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:46,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 5526 transitions. [2022-02-10 02:50:46,662 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 5526 transitions. Word has length 23 [2022-02-10 02:50:46,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:46,662 INFO L470 AbstractCegarLoop]: Abstraction has 1772 states and 5526 transitions. [2022-02-10 02:50:46,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 30 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:46,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 5526 transitions. [2022-02-10 02:50:46,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:46,664 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:46,664 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:46,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Ended with exit code 0 [2022-02-10 02:50:46,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,178 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:46,865 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:46,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:46,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1447000427, now seen corresponding path program 177 times [2022-02-10 02:50:46,865 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:46,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776739976] [2022-02-10 02:50:46,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:46,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:47,033 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:47,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:47,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776739976] [2022-02-10 02:50:47,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776739976] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:47,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893978830] [2022-02-10 02:50:47,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:50:47,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:47,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:47,034 INFO L229 MonitoredProcess]: Starting monitored process 179 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:47,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2022-02-10 02:50:47,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:50:47,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:47,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:47,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:47,277 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:47,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:47,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893978830] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:47,659 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:47,660 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 31 [2022-02-10 02:50:47,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639390332] [2022-02-10 02:50:47,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:47,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:50:47,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:47,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:50:47,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:50:47,660 INFO L87 Difference]: Start difference. First operand 1772 states and 5526 transitions. Second operand has 32 states, 32 states have (on average 1.6875) internal successors, (54), 31 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:48,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:48,116 INFO L93 Difference]: Finished difference Result 1927 states and 5699 transitions. [2022-02-10 02:50:48,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:50:48,117 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.6875) internal successors, (54), 31 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:48,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:48,120 INFO L225 Difference]: With dead ends: 1927 [2022-02-10 02:50:48,120 INFO L226 Difference]: Without dead ends: 1915 [2022-02-10 02:50:48,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:50:48,120 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 168 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:48,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 702 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:48,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2022-02-10 02:50:48,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1756. [2022-02-10 02:50:48,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1755 states have (on average 3.10997150997151) internal successors, (5458), 1755 states have internal predecessors, (5458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:48,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 5458 transitions. [2022-02-10 02:50:48,144 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 5458 transitions. Word has length 23 [2022-02-10 02:50:48,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:48,144 INFO L470 AbstractCegarLoop]: Abstraction has 1756 states and 5458 transitions. [2022-02-10 02:50:48,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.6875) internal successors, (54), 31 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:48,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 5458 transitions. [2022-02-10 02:50:48,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:48,146 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:48,146 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:48,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Ended with exit code 0 [2022-02-10 02:50:48,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,179 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:48,347 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:48,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:48,347 INFO L85 PathProgramCache]: Analyzing trace with hash -613859375, now seen corresponding path program 178 times [2022-02-10 02:50:48,347 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:48,347 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055703457] [2022-02-10 02:50:48,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:48,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:48,516 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:48,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055703457] [2022-02-10 02:50:48,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055703457] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:48,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259117607] [2022-02-10 02:50:48,516 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:50:48,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:48,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:48,517 INFO L229 MonitoredProcess]: Starting monitored process 180 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:48,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Waiting until timeout for monitored process [2022-02-10 02:50:48,541 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:50:48,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:48,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:48,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:48,748 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:48,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:49,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259117607] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:49,104 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:49,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 29 [2022-02-10 02:50:49,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403086005] [2022-02-10 02:50:49,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:49,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:50:49,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:49,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:50:49,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:50:49,105 INFO L87 Difference]: Start difference. First operand 1756 states and 5458 transitions. Second operand has 30 states, 30 states have (on average 1.7) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:49,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:49,623 INFO L93 Difference]: Finished difference Result 1917 states and 5630 transitions. [2022-02-10 02:50:49,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:50:49,623 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:49,626 INFO L225 Difference]: With dead ends: 1917 [2022-02-10 02:50:49,626 INFO L226 Difference]: Without dead ends: 1904 [2022-02-10 02:50:49,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:50:49,627 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 162 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:49,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 735 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:49,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2022-02-10 02:50:49,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1745. [2022-02-10 02:50:49,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1744 states have (on average 3.1049311926605503) internal successors, (5415), 1744 states have internal predecessors, (5415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 5415 transitions. [2022-02-10 02:50:49,648 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 5415 transitions. Word has length 23 [2022-02-10 02:50:49,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:49,648 INFO L470 AbstractCegarLoop]: Abstraction has 1745 states and 5415 transitions. [2022-02-10 02:50:49,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:49,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 5415 transitions. [2022-02-10 02:50:49,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:49,650 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:49,650 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:49,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Ended with exit code 0 [2022-02-10 02:50:49,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 180 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable183 [2022-02-10 02:50:49,851 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:49,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:49,851 INFO L85 PathProgramCache]: Analyzing trace with hash -76003797, now seen corresponding path program 179 times [2022-02-10 02:50:49,851 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:49,851 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672684243] [2022-02-10 02:50:49,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:49,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:50,028 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:50,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672684243] [2022-02-10 02:50:50,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672684243] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:50,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023394526] [2022-02-10 02:50:50,028 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:50:50,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:50,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:50,029 INFO L229 MonitoredProcess]: Starting monitored process 181 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:50,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Waiting until timeout for monitored process [2022-02-10 02:50:50,055 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:50:50,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:50,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:50,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:50,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:50,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023394526] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:50,602 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:50,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 28 [2022-02-10 02:50:50,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005723076] [2022-02-10 02:50:50,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:50,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 02:50:50,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:50,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 02:50:50,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:50:50,603 INFO L87 Difference]: Start difference. First operand 1745 states and 5415 transitions. Second operand has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:51,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:51,199 INFO L93 Difference]: Finished difference Result 1917 states and 5598 transitions. [2022-02-10 02:50:51,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:50:51,199 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:51,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:51,203 INFO L225 Difference]: With dead ends: 1917 [2022-02-10 02:50:51,203 INFO L226 Difference]: Without dead ends: 1903 [2022-02-10 02:50:51,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=1068, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:50:51,203 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 129 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:51,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 785 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:50:51,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2022-02-10 02:50:51,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1735. [2022-02-10 02:50:51,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1734 states have (on average 3.1026528258362167) internal successors, (5380), 1734 states have internal predecessors, (5380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 5380 transitions. [2022-02-10 02:50:51,228 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 5380 transitions. Word has length 23 [2022-02-10 02:50:51,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:51,228 INFO L470 AbstractCegarLoop]: Abstraction has 1735 states and 5380 transitions. [2022-02-10 02:50:51,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:51,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 5380 transitions. [2022-02-10 02:50:51,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:51,230 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:51,230 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:51,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:51,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,181 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:51,431 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:51,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:51,431 INFO L85 PathProgramCache]: Analyzing trace with hash -582350063, now seen corresponding path program 180 times [2022-02-10 02:50:51,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:51,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426115274] [2022-02-10 02:50:51,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:51,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:51,599 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:51,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426115274] [2022-02-10 02:50:51,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426115274] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:51,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491765226] [2022-02-10 02:50:51,599 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:50:51,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:51,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:51,600 INFO L229 MonitoredProcess]: Starting monitored process 182 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:51,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Waiting until timeout for monitored process [2022-02-10 02:50:51,632 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:50:51,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:51,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:51,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:51,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:52,173 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:52,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491765226] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:52,174 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:52,174 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 27 [2022-02-10 02:50:52,174 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590837702] [2022-02-10 02:50:52,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:52,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 02:50:52,174 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:52,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 02:50:52,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:50:52,174 INFO L87 Difference]: Start difference. First operand 1735 states and 5380 transitions. Second operand has 28 states, 28 states have (on average 1.75) internal successors, (49), 27 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:52,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:52,731 INFO L93 Difference]: Finished difference Result 1873 states and 5526 transitions. [2022-02-10 02:50:52,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:50:52,732 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.75) internal successors, (49), 27 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:52,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:52,735 INFO L225 Difference]: With dead ends: 1873 [2022-02-10 02:50:52,735 INFO L226 Difference]: Without dead ends: 1859 [2022-02-10 02:50:52,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:50:52,735 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 156 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:52,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 601 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:52,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2022-02-10 02:50:52,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 1726. [2022-02-10 02:50:52,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1725 states have (on average 3.102608695652174) internal successors, (5352), 1725 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:52,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 5352 transitions. [2022-02-10 02:50:52,757 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 5352 transitions. Word has length 23 [2022-02-10 02:50:52,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:52,758 INFO L470 AbstractCegarLoop]: Abstraction has 1726 states and 5352 transitions. [2022-02-10 02:50:52,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.75) internal successors, (49), 27 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:52,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 5352 transitions. [2022-02-10 02:50:52,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:52,768 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:52,768 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:52,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Ended with exit code 0 [2022-02-10 02:50:52,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 182 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable185 [2022-02-10 02:50:52,969 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:52,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:52,969 INFO L85 PathProgramCache]: Analyzing trace with hash 900784875, now seen corresponding path program 181 times [2022-02-10 02:50:52,969 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:52,969 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382522090] [2022-02-10 02:50:52,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:52,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:53,132 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:53,133 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:53,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382522090] [2022-02-10 02:50:53,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382522090] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:53,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952738238] [2022-02-10 02:50:53,133 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:50:53,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:53,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:53,134 INFO L229 MonitoredProcess]: Starting monitored process 183 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:53,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Waiting until timeout for monitored process [2022-02-10 02:50:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:53,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:53,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:53,390 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:53,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:53,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952738238] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:53,678 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:53,678 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 26 [2022-02-10 02:50:53,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137554419] [2022-02-10 02:50:53,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:53,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:50:53,678 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:53,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:50:53,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:50:53,678 INFO L87 Difference]: Start difference. First operand 1726 states and 5352 transitions. Second operand has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:54,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:54,184 INFO L93 Difference]: Finished difference Result 1833 states and 5463 transitions. [2022-02-10 02:50:54,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:50:54,184 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:54,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:54,187 INFO L225 Difference]: With dead ends: 1833 [2022-02-10 02:50:54,188 INFO L226 Difference]: Without dead ends: 1828 [2022-02-10 02:50:54,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:50:54,188 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 125 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:54,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 540 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:54,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2022-02-10 02:50:54,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1729. [2022-02-10 02:50:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1728 states have (on average 3.0989583333333335) internal successors, (5355), 1728 states have internal predecessors, (5355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:54,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 5355 transitions. [2022-02-10 02:50:54,218 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 5355 transitions. Word has length 23 [2022-02-10 02:50:54,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:54,218 INFO L470 AbstractCegarLoop]: Abstraction has 1729 states and 5355 transitions. [2022-02-10 02:50:54,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:54,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 5355 transitions. [2022-02-10 02:50:54,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:54,221 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:54,221 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:54,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Ended with exit code 0 [2022-02-10 02:50:54,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,183 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:54,421 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:54,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:54,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1142255659, now seen corresponding path program 182 times [2022-02-10 02:50:54,422 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:54,422 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747824134] [2022-02-10 02:50:54,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:54,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:54,581 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:54,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747824134] [2022-02-10 02:50:54,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747824134] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:54,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521349023] [2022-02-10 02:50:54,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:50:54,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:54,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:54,582 INFO L229 MonitoredProcess]: Starting monitored process 184 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:54,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Waiting until timeout for monitored process [2022-02-10 02:50:54,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:50:54,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:54,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:54,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:54,849 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:54,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:55,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521349023] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:55,213 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:55,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14] total 29 [2022-02-10 02:50:55,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909431350] [2022-02-10 02:50:55,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:55,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:50:55,213 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:55,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:50:55,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:50:55,214 INFO L87 Difference]: Start difference. First operand 1729 states and 5355 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:55,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:55,467 INFO L93 Difference]: Finished difference Result 1778 states and 5406 transitions. [2022-02-10 02:50:55,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:50:55,467 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:55,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:55,470 INFO L225 Difference]: With dead ends: 1778 [2022-02-10 02:50:55,470 INFO L226 Difference]: Without dead ends: 1774 [2022-02-10 02:50:55,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 10 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:50:55,471 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 104 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:55,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 303 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:50:55,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2022-02-10 02:50:55,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1725. [2022-02-10 02:50:55,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1725 states, 1724 states have (on average 3.0991879350348026) internal successors, (5343), 1724 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:55,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 5343 transitions. [2022-02-10 02:50:55,502 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 5343 transitions. Word has length 23 [2022-02-10 02:50:55,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:55,502 INFO L470 AbstractCegarLoop]: Abstraction has 1725 states and 5343 transitions. [2022-02-10 02:50:55,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:55,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 5343 transitions. [2022-02-10 02:50:55,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:55,504 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:55,504 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:55,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:55,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,184 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:55,704 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:55,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:55,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1906484373, now seen corresponding path program 183 times [2022-02-10 02:50:55,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:55,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125939467] [2022-02-10 02:50:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:55,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:55,847 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:55,848 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:55,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125939467] [2022-02-10 02:50:55,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125939467] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:55,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885366631] [2022-02-10 02:50:55,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:50:55,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:55,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:55,849 INFO L229 MonitoredProcess]: Starting monitored process 185 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:55,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Waiting until timeout for monitored process [2022-02-10 02:50:55,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:50:55,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:55,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:55,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:56,095 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:56,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:56,464 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:56,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885366631] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:56,464 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:56,464 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 30 [2022-02-10 02:50:56,464 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127662398] [2022-02-10 02:50:56,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:56,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 02:50:56,464 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:56,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 02:50:56,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:50:56,465 INFO L87 Difference]: Start difference. First operand 1725 states and 5343 transitions. Second operand has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:56,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:56,979 INFO L93 Difference]: Finished difference Result 1929 states and 5687 transitions. [2022-02-10 02:50:56,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:50:56,979 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:56,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:56,983 INFO L225 Difference]: With dead ends: 1929 [2022-02-10 02:50:56,983 INFO L226 Difference]: Without dead ends: 1921 [2022-02-10 02:50:56,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=1068, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:50:56,983 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 164 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:56,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 770 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:56,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2022-02-10 02:50:57,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1776. [2022-02-10 02:50:57,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1776 states, 1775 states have (on average 3.112676056338028) internal successors, (5525), 1775 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:57,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 5525 transitions. [2022-02-10 02:50:57,015 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 5525 transitions. Word has length 23 [2022-02-10 02:50:57,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:57,015 INFO L470 AbstractCegarLoop]: Abstraction has 1776 states and 5525 transitions. [2022-02-10 02:50:57,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 5525 transitions. [2022-02-10 02:50:57,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:57,018 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:57,018 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:57,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Ended with exit code 0 [2022-02-10 02:50:57,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2022-02-10 02:50:57,218 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:57,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:57,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1062475993, now seen corresponding path program 184 times [2022-02-10 02:50:57,219 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:57,219 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824595255] [2022-02-10 02:50:57,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:57,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:57,366 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:57,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824595255] [2022-02-10 02:50:57,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824595255] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:57,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836754559] [2022-02-10 02:50:57,366 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:50:57,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:57,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:57,367 INFO L229 MonitoredProcess]: Starting monitored process 186 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:57,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Waiting until timeout for monitored process [2022-02-10 02:50:57,391 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:50:57,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:57,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:57,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:57,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:57,972 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836754559] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:57,973 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:57,973 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 31 [2022-02-10 02:50:57,973 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295650519] [2022-02-10 02:50:57,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:57,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:50:57,973 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:57,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:50:57,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:50:57,973 INFO L87 Difference]: Start difference. First operand 1776 states and 5525 transitions. Second operand has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:58,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:58,455 INFO L93 Difference]: Finished difference Result 1931 states and 5688 transitions. [2022-02-10 02:50:58,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:50:58,456 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:58,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:58,459 INFO L225 Difference]: With dead ends: 1931 [2022-02-10 02:50:58,459 INFO L226 Difference]: Without dead ends: 1920 [2022-02-10 02:50:58,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:50:58,459 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 185 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:58,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 752 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:58,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2022-02-10 02:50:58,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1767. [2022-02-10 02:50:58,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1766 states have (on average 3.108154020385051) internal successors, (5489), 1766 states have internal predecessors, (5489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:58,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 5489 transitions. [2022-02-10 02:50:58,482 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 5489 transitions. Word has length 23 [2022-02-10 02:50:58,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:58,482 INFO L470 AbstractCegarLoop]: Abstraction has 1767 states and 5489 transitions. [2022-02-10 02:50:58,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:58,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 5489 transitions. [2022-02-10 02:50:58,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:50:58,485 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:58,485 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:58,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:58,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 186 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2022-02-10 02:50:58,685 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:58,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:58,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1171631501, now seen corresponding path program 185 times [2022-02-10 02:50:58,686 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:58,686 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461977266] [2022-02-10 02:50:58,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:58,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:58,841 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:58,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:58,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461977266] [2022-02-10 02:50:58,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461977266] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:58,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554184573] [2022-02-10 02:50:58,842 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:50:58,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:58,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:58,843 INFO L229 MonitoredProcess]: Starting monitored process 187 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:58,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Waiting until timeout for monitored process [2022-02-10 02:50:58,869 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:50:58,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:58,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:50:58,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:59,085 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:59,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:59,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554184573] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:59,430 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:59,430 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2022-02-10 02:50:59,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29802815] [2022-02-10 02:50:59,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:59,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:50:59,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:59,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:50:59,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:50:59,431 INFO L87 Difference]: Start difference. First operand 1767 states and 5489 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:59,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:59,992 INFO L93 Difference]: Finished difference Result 1931 states and 5661 transitions. [2022-02-10 02:50:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:50:59,992 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:50:59,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:59,996 INFO L225 Difference]: With dead ends: 1931 [2022-02-10 02:50:59,996 INFO L226 Difference]: Without dead ends: 1919 [2022-02-10 02:50:59,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:50:59,996 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 186 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:59,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 819 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:59,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2022-02-10 02:51:00,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1759. [2022-02-10 02:51:00,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1758 states have (on average 3.1052332195676904) internal successors, (5459), 1758 states have internal predecessors, (5459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:00,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 5459 transitions. [2022-02-10 02:51:00,020 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 5459 transitions. Word has length 23 [2022-02-10 02:51:00,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:00,020 INFO L470 AbstractCegarLoop]: Abstraction has 1759 states and 5459 transitions. [2022-02-10 02:51:00,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:00,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 5459 transitions. [2022-02-10 02:51:00,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:00,022 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:00,022 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:00,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Ended with exit code 0 [2022-02-10 02:51:00,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,187 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:00,224 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:00,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:00,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1709487079, now seen corresponding path program 186 times [2022-02-10 02:51:00,225 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:00,225 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390480721] [2022-02-10 02:51:00,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:00,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:00,382 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:00,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390480721] [2022-02-10 02:51:00,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390480721] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:00,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742151618] [2022-02-10 02:51:00,382 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:51:00,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:00,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:00,384 INFO L229 MonitoredProcess]: Starting monitored process 188 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:00,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Waiting until timeout for monitored process [2022-02-10 02:51:00,409 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:51:00,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:00,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:00,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:00,623 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:00,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:00,961 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:00,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742151618] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:00,961 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:00,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2022-02-10 02:51:00,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334205509] [2022-02-10 02:51:00,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:00,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 02:51:00,962 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:00,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 02:51:00,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:51:00,962 INFO L87 Difference]: Start difference. First operand 1759 states and 5459 transitions. Second operand has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 28 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:01,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:01,583 INFO L93 Difference]: Finished difference Result 1934 states and 5642 transitions. [2022-02-10 02:51:01,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:51:01,584 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 28 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:01,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:01,587 INFO L225 Difference]: With dead ends: 1934 [2022-02-10 02:51:01,587 INFO L226 Difference]: Without dead ends: 1921 [2022-02-10 02:51:01,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:51:01,588 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 136 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:01,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 843 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:51:01,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2022-02-10 02:51:01,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1751. [2022-02-10 02:51:01,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1750 states have (on average 3.1034285714285716) internal successors, (5431), 1750 states have internal predecessors, (5431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:01,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 5431 transitions. [2022-02-10 02:51:01,612 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 5431 transitions. Word has length 23 [2022-02-10 02:51:01,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:01,612 INFO L470 AbstractCegarLoop]: Abstraction has 1751 states and 5431 transitions. [2022-02-10 02:51:01,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 28 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:01,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 5431 transitions. [2022-02-10 02:51:01,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:01,615 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:01,615 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:01,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Ended with exit code 0 [2022-02-10 02:51:01,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable191 [2022-02-10 02:51:01,815 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:01,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:01,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1203140813, now seen corresponding path program 187 times [2022-02-10 02:51:01,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:01,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090887446] [2022-02-10 02:51:01,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:01,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:01,980 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:01,980 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:01,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090887446] [2022-02-10 02:51:01,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090887446] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:01,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917303502] [2022-02-10 02:51:01,981 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:51:01,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:01,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:01,982 INFO L229 MonitoredProcess]: Starting monitored process 189 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:01,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Waiting until timeout for monitored process [2022-02-10 02:51:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:02,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:02,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:02,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:02,565 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:02,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917303502] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:02,565 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:02,566 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2022-02-10 02:51:02,566 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583278641] [2022-02-10 02:51:02,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:02,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 02:51:02,566 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:02,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 02:51:02,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:51:02,566 INFO L87 Difference]: Start difference. First operand 1751 states and 5431 transitions. Second operand has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:03,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:03,163 INFO L93 Difference]: Finished difference Result 1939 states and 5627 transitions. [2022-02-10 02:51:03,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:51:03,164 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:03,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:03,167 INFO L225 Difference]: With dead ends: 1939 [2022-02-10 02:51:03,167 INFO L226 Difference]: Without dead ends: 1925 [2022-02-10 02:51:03,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=1071, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:51:03,168 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 167 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:03,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 717 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:51:03,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2022-02-10 02:51:03,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1743. [2022-02-10 02:51:03,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1743 states, 1742 states have (on average 3.102755453501722) internal successors, (5405), 1742 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:03,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 5405 transitions. [2022-02-10 02:51:03,191 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 5405 transitions. Word has length 23 [2022-02-10 02:51:03,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:03,191 INFO L470 AbstractCegarLoop]: Abstraction has 1743 states and 5405 transitions. [2022-02-10 02:51:03,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:03,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 5405 transitions. [2022-02-10 02:51:03,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:03,193 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:03,194 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:03,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Ended with exit code 0 [2022-02-10 02:51:03,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,189 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:03,394 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:03,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:03,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1608691545, now seen corresponding path program 188 times [2022-02-10 02:51:03,394 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:03,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334590939] [2022-02-10 02:51:03,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:03,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:03,568 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:03,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334590939] [2022-02-10 02:51:03,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334590939] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:03,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276279457] [2022-02-10 02:51:03,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:51:03,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:03,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:03,570 INFO L229 MonitoredProcess]: Starting monitored process 190 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:03,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Waiting until timeout for monitored process [2022-02-10 02:51:03,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:51:03,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:03,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:03,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:03,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:04,107 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:04,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276279457] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:04,108 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:04,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2022-02-10 02:51:04,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172586968] [2022-02-10 02:51:04,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:04,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:51:04,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:04,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:51:04,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:51:04,108 INFO L87 Difference]: Start difference. First operand 1743 states and 5405 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:04,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:04,719 INFO L93 Difference]: Finished difference Result 1886 states and 5554 transitions. [2022-02-10 02:51:04,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:51:04,720 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:04,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:04,723 INFO L225 Difference]: With dead ends: 1886 [2022-02-10 02:51:04,723 INFO L226 Difference]: Without dead ends: 1871 [2022-02-10 02:51:04,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=1070, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:51:04,723 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 124 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:04,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 675 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:51:04,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2022-02-10 02:51:04,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1733. [2022-02-10 02:51:04,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 3.1062355658198615) internal successors, (5380), 1732 states have internal predecessors, (5380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:04,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 5380 transitions. [2022-02-10 02:51:04,752 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 5380 transitions. Word has length 23 [2022-02-10 02:51:04,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:04,753 INFO L470 AbstractCegarLoop]: Abstraction has 1733 states and 5380 transitions. [2022-02-10 02:51:04,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:04,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 5380 transitions. [2022-02-10 02:51:04,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:04,756 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:04,756 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:04,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Ended with exit code 0 [2022-02-10 02:51:04,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,190 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:04,966 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:04,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:04,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1418818573, now seen corresponding path program 189 times [2022-02-10 02:51:04,966 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:04,966 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542816870] [2022-02-10 02:51:04,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:04,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:05,148 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:05,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:05,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542816870] [2022-02-10 02:51:05,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542816870] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:05,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86461830] [2022-02-10 02:51:05,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:51:05,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:05,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:05,149 INFO L229 MonitoredProcess]: Starting monitored process 191 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:05,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Waiting until timeout for monitored process [2022-02-10 02:51:05,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:51:05,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:05,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:05,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:05,410 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:05,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:05,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86461830] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:05,674 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:05,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 25 [2022-02-10 02:51:05,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420747888] [2022-02-10 02:51:05,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:05,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:51:05,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:05,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:51:05,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:51:05,675 INFO L87 Difference]: Start difference. First operand 1733 states and 5380 transitions. Second operand has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:06,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:06,269 INFO L93 Difference]: Finished difference Result 1846 states and 5496 transitions. [2022-02-10 02:51:06,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:51:06,269 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:06,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:06,272 INFO L225 Difference]: With dead ends: 1846 [2022-02-10 02:51:06,272 INFO L226 Difference]: Without dead ends: 1841 [2022-02-10 02:51:06,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=894, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:51:06,273 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 108 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:06,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 685 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:51:06,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2022-02-10 02:51:06,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1738. [2022-02-10 02:51:06,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1737 states have (on average 3.1001727115716755) internal successors, (5385), 1737 states have internal predecessors, (5385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:06,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 5385 transitions. [2022-02-10 02:51:06,301 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 5385 transitions. Word has length 23 [2022-02-10 02:51:06,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:06,301 INFO L470 AbstractCegarLoop]: Abstraction has 1738 states and 5385 transitions. [2022-02-10 02:51:06,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:06,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 5385 transitions. [2022-02-10 02:51:06,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:06,304 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:06,304 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:06,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Ended with exit code 0 [2022-02-10 02:51:06,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194,191 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:06,505 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:06,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:06,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1475866867, now seen corresponding path program 190 times [2022-02-10 02:51:06,505 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:06,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908130976] [2022-02-10 02:51:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:06,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:06,656 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:06,657 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:06,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908130976] [2022-02-10 02:51:06,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908130976] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:06,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932221121] [2022-02-10 02:51:06,657 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:51:06,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:06,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:06,658 INFO L229 MonitoredProcess]: Starting monitored process 192 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:06,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Waiting until timeout for monitored process [2022-02-10 02:51:06,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:51:06,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:06,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:06,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:06,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:07,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932221121] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:07,287 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:07,287 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14] total 30 [2022-02-10 02:51:07,288 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523949551] [2022-02-10 02:51:07,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:07,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 02:51:07,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:07,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 02:51:07,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:51:07,288 INFO L87 Difference]: Start difference. First operand 1738 states and 5385 transitions. Second operand has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:07,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:07,631 INFO L93 Difference]: Finished difference Result 1854 states and 5566 transitions. [2022-02-10 02:51:07,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:51:07,632 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:07,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:07,635 INFO L225 Difference]: With dead ends: 1854 [2022-02-10 02:51:07,635 INFO L226 Difference]: Without dead ends: 1848 [2022-02-10 02:51:07,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:51:07,635 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 108 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:07,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 440 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:07,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2022-02-10 02:51:07,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1747. [2022-02-10 02:51:07,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1746 states have (on average 3.1019473081328752) internal successors, (5416), 1746 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:07,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 5416 transitions. [2022-02-10 02:51:07,658 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 5416 transitions. Word has length 23 [2022-02-10 02:51:07,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:07,658 INFO L470 AbstractCegarLoop]: Abstraction has 1747 states and 5416 transitions. [2022-02-10 02:51:07,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:07,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 5416 transitions. [2022-02-10 02:51:07,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:07,661 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:07,661 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:07,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:07,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,192 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:07,863 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:07,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:07,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1975092049, now seen corresponding path program 191 times [2022-02-10 02:51:07,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:07,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518443914] [2022-02-10 02:51:07,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:07,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:08,021 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:08,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518443914] [2022-02-10 02:51:08,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518443914] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:08,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256138504] [2022-02-10 02:51:08,021 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:51:08,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:08,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:08,022 INFO L229 MonitoredProcess]: Starting monitored process 193 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:08,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Waiting until timeout for monitored process [2022-02-10 02:51:08,047 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:51:08,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:08,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:08,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:08,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:08,660 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:08,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256138504] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:08,661 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:08,661 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14] total 31 [2022-02-10 02:51:08,661 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075652859] [2022-02-10 02:51:08,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:08,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:51:08,662 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:08,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:51:08,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:51:08,662 INFO L87 Difference]: Start difference. First operand 1747 states and 5416 transitions. Second operand has 32 states, 32 states have (on average 1.75) internal successors, (56), 31 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:08,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:08,978 INFO L93 Difference]: Finished difference Result 1843 states and 5554 transitions. [2022-02-10 02:51:08,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:51:08,979 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.75) internal successors, (56), 31 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:08,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:08,982 INFO L225 Difference]: With dead ends: 1843 [2022-02-10 02:51:08,982 INFO L226 Difference]: Without dead ends: 1838 [2022-02-10 02:51:08,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=1013, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:51:08,983 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 164 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:08,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 431 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:08,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2022-02-10 02:51:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1747. [2022-02-10 02:51:09,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1746 states have (on average 3.1019473081328752) internal successors, (5416), 1746 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:09,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 5416 transitions. [2022-02-10 02:51:09,007 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 5416 transitions. Word has length 23 [2022-02-10 02:51:09,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:09,007 INFO L470 AbstractCegarLoop]: Abstraction has 1747 states and 5416 transitions. [2022-02-10 02:51:09,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.75) internal successors, (56), 31 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:09,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 5416 transitions. [2022-02-10 02:51:09,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:09,009 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:09,009 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:09,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Ended with exit code 0 [2022-02-10 02:51:09,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,193 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:09,210 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:09,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:09,210 INFO L85 PathProgramCache]: Analyzing trace with hash -518598289, now seen corresponding path program 192 times [2022-02-10 02:51:09,210 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:09,210 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108651085] [2022-02-10 02:51:09,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:09,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:09,371 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:09,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108651085] [2022-02-10 02:51:09,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108651085] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:09,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110895440] [2022-02-10 02:51:09,371 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:51:09,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:09,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:09,372 INFO L229 MonitoredProcess]: Starting monitored process 194 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:09,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Waiting until timeout for monitored process [2022-02-10 02:51:09,398 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:51:09,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:09,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:09,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:09,656 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:09,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:10,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110895440] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:10,040 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:10,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14] total 29 [2022-02-10 02:51:10,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029557920] [2022-02-10 02:51:10,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:10,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:51:10,040 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:10,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:51:10,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:51:10,040 INFO L87 Difference]: Start difference. First operand 1747 states and 5416 transitions. Second operand has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:10,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:10,418 INFO L93 Difference]: Finished difference Result 1822 states and 5515 transitions. [2022-02-10 02:51:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:51:10,419 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:10,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:10,421 INFO L225 Difference]: With dead ends: 1822 [2022-02-10 02:51:10,421 INFO L226 Difference]: Without dead ends: 1818 [2022-02-10 02:51:10,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 10 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:51:10,422 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 110 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:10,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 513 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:10,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-02-10 02:51:10,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1747. [2022-02-10 02:51:10,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1746 states have (on average 3.1019473081328752) internal successors, (5416), 1746 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:10,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 5416 transitions. [2022-02-10 02:51:10,443 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 5416 transitions. Word has length 23 [2022-02-10 02:51:10,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:10,444 INFO L470 AbstractCegarLoop]: Abstraction has 1747 states and 5416 transitions. [2022-02-10 02:51:10,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:10,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 5416 transitions. [2022-02-10 02:51:10,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:10,446 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:10,446 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:10,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:10,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,194 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:10,646 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:10,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:10,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1045427093, now seen corresponding path program 193 times [2022-02-10 02:51:10,647 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:10,647 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217044980] [2022-02-10 02:51:10,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:10,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:10,802 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:10,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217044980] [2022-02-10 02:51:10,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217044980] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:10,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457244452] [2022-02-10 02:51:10,802 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:51:10,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:10,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:10,803 INFO L229 MonitoredProcess]: Starting monitored process 195 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:10,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Waiting until timeout for monitored process [2022-02-10 02:51:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:10,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:10,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:11,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:11,427 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:11,427 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457244452] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:11,427 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:11,427 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 14] total 30 [2022-02-10 02:51:11,428 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428070661] [2022-02-10 02:51:11,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:11,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 02:51:11,428 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:11,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 02:51:11,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:51:11,428 INFO L87 Difference]: Start difference. First operand 1747 states and 5416 transitions. Second operand has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:11,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:11,803 INFO L93 Difference]: Finished difference Result 1884 states and 5641 transitions. [2022-02-10 02:51:11,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:51:11,803 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:11,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:11,806 INFO L225 Difference]: With dead ends: 1884 [2022-02-10 02:51:11,806 INFO L226 Difference]: Without dead ends: 1878 [2022-02-10 02:51:11,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:51:11,807 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 139 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:11,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 503 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:11,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2022-02-10 02:51:11,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1760. [2022-02-10 02:51:11,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1759 states have (on average 3.105173393973849) internal successors, (5462), 1759 states have internal predecessors, (5462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:11,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 5462 transitions. [2022-02-10 02:51:11,829 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 5462 transitions. Word has length 23 [2022-02-10 02:51:11,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:11,829 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 5462 transitions. [2022-02-10 02:51:11,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:11,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 5462 transitions. [2022-02-10 02:51:11,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:11,831 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:11,831 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:11,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Ended with exit code 0 [2022-02-10 02:51:12,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable198 [2022-02-10 02:51:12,032 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:12,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:12,032 INFO L85 PathProgramCache]: Analyzing trace with hash -201418713, now seen corresponding path program 194 times [2022-02-10 02:51:12,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:12,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818415259] [2022-02-10 02:51:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:12,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:12,190 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:12,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818415259] [2022-02-10 02:51:12,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818415259] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:12,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108478545] [2022-02-10 02:51:12,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:51:12,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:12,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:12,192 INFO L229 MonitoredProcess]: Starting monitored process 196 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:12,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Waiting until timeout for monitored process [2022-02-10 02:51:12,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:51:12,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:12,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:12,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:12,455 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:12,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:12,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108478545] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:12,819 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:12,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 14] total 31 [2022-02-10 02:51:12,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336607141] [2022-02-10 02:51:12,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:12,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:51:12,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:12,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:51:12,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:51:12,820 INFO L87 Difference]: Start difference. First operand 1760 states and 5462 transitions. Second operand has 32 states, 32 states have (on average 1.71875) internal successors, (55), 31 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:13,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:13,158 INFO L93 Difference]: Finished difference Result 1872 states and 5627 transitions. [2022-02-10 02:51:13,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:51:13,159 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.71875) internal successors, (55), 31 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:13,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:13,162 INFO L225 Difference]: With dead ends: 1872 [2022-02-10 02:51:13,162 INFO L226 Difference]: Without dead ends: 1867 [2022-02-10 02:51:13,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=1013, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:51:13,162 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 137 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:13,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 483 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2022-02-10 02:51:13,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 1760. [2022-02-10 02:51:13,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1759 states have (on average 3.105173393973849) internal successors, (5462), 1759 states have internal predecessors, (5462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 5462 transitions. [2022-02-10 02:51:13,185 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 5462 transitions. Word has length 23 [2022-02-10 02:51:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:13,185 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 5462 transitions. [2022-02-10 02:51:13,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.71875) internal successors, (55), 31 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:13,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 5462 transitions. [2022-02-10 02:51:13,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:13,188 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:13,188 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:13,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Ended with exit code 0 [2022-02-10 02:51:13,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2022-02-10 02:51:13,388 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:13,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:13,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1255075047, now seen corresponding path program 195 times [2022-02-10 02:51:13,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:13,389 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147091142] [2022-02-10 02:51:13,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:13,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:13,554 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:13,554 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:13,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147091142] [2022-02-10 02:51:13,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147091142] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:13,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967044934] [2022-02-10 02:51:13,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:51:13,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:13,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:13,555 INFO L229 MonitoredProcess]: Starting monitored process 197 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:13,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Waiting until timeout for monitored process [2022-02-10 02:51:13,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:51:13,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:13,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:13,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:13,828 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:13,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:14,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967044934] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:14,195 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:14,195 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 14] total 29 [2022-02-10 02:51:14,195 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834542334] [2022-02-10 02:51:14,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:14,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:51:14,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:14,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:51:14,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:51:14,195 INFO L87 Difference]: Start difference. First operand 1760 states and 5462 transitions. Second operand has 30 states, 30 states have (on average 1.7) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:14,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:14,599 INFO L93 Difference]: Finished difference Result 1859 states and 5600 transitions. [2022-02-10 02:51:14,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:51:14,600 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:14,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:14,602 INFO L225 Difference]: With dead ends: 1859 [2022-02-10 02:51:14,602 INFO L226 Difference]: Without dead ends: 1852 [2022-02-10 02:51:14,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:51:14,603 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 114 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:14,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 497 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:14,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2022-02-10 02:51:14,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1760. [2022-02-10 02:51:14,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1759 states have (on average 3.104604889141558) internal successors, (5461), 1759 states have internal predecessors, (5461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:14,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 5461 transitions. [2022-02-10 02:51:14,637 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 5461 transitions. Word has length 23 [2022-02-10 02:51:14,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:14,637 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 5461 transitions. [2022-02-10 02:51:14,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:14,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 5461 transitions. [2022-02-10 02:51:14,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:14,639 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:14,639 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:14,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Ended with exit code 0 [2022-02-10 02:51:14,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200,197 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:14,840 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:14,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:14,840 INFO L85 PathProgramCache]: Analyzing trace with hash -443802645, now seen corresponding path program 196 times [2022-02-10 02:51:14,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:14,841 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701969789] [2022-02-10 02:51:14,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:14,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:14,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:14,994 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701969789] [2022-02-10 02:51:14,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701969789] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:14,994 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145806543] [2022-02-10 02:51:14,994 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:51:14,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:14,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:14,995 INFO L229 MonitoredProcess]: Starting monitored process 198 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:14,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Waiting until timeout for monitored process [2022-02-10 02:51:15,022 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:51:15,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:15,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:15,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:15,266 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:15,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:15,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145806543] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:15,611 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:15,611 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 14] total 28 [2022-02-10 02:51:15,611 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167803374] [2022-02-10 02:51:15,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:15,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 02:51:15,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:15,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 02:51:15,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:51:15,612 INFO L87 Difference]: Start difference. First operand 1760 states and 5461 transitions. Second operand has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:15,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:15,973 INFO L93 Difference]: Finished difference Result 1833 states and 5549 transitions. [2022-02-10 02:51:15,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:51:15,973 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:15,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:15,977 INFO L225 Difference]: With dead ends: 1833 [2022-02-10 02:51:15,977 INFO L226 Difference]: Without dead ends: 1829 [2022-02-10 02:51:15,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=954, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:51:15,977 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 101 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:15,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 431 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:15,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2022-02-10 02:51:16,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1760. [2022-02-10 02:51:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1759 states have (on average 3.104604889141558) internal successors, (5461), 1759 states have internal predecessors, (5461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:16,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 5461 transitions. [2022-02-10 02:51:16,008 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 5461 transitions. Word has length 23 [2022-02-10 02:51:16,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:16,008 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 5461 transitions. [2022-02-10 02:51:16,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:16,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 5461 transitions. [2022-02-10 02:51:16,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:16,010 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:16,010 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:16,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Ended with exit code 0 [2022-02-10 02:51:16,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2022-02-10 02:51:16,210 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:16,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:16,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2114664939, now seen corresponding path program 197 times [2022-02-10 02:51:16,211 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:16,211 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943041447] [2022-02-10 02:51:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:16,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:16,389 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:16,389 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:16,389 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943041447] [2022-02-10 02:51:16,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943041447] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:16,389 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805174808] [2022-02-10 02:51:16,389 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:51:16,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:16,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:16,390 INFO L229 MonitoredProcess]: Starting monitored process 199 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:16,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Waiting until timeout for monitored process [2022-02-10 02:51:16,416 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:51:16,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:16,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:16,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:16,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:17,022 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805174808] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:17,022 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:17,022 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 14] total 28 [2022-02-10 02:51:17,022 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631125915] [2022-02-10 02:51:17,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:17,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 02:51:17,022 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:17,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 02:51:17,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:51:17,022 INFO L87 Difference]: Start difference. First operand 1760 states and 5461 transitions. Second operand has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:17,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:17,349 INFO L93 Difference]: Finished difference Result 1815 states and 5518 transitions. [2022-02-10 02:51:17,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:51:17,349 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:17,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:17,353 INFO L225 Difference]: With dead ends: 1815 [2022-02-10 02:51:17,353 INFO L226 Difference]: Without dead ends: 1811 [2022-02-10 02:51:17,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:51:17,353 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 87 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:17,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 354 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:17,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2022-02-10 02:51:17,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1756. [2022-02-10 02:51:17,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1755 states have (on average 3.104843304843305) internal successors, (5449), 1755 states have internal predecessors, (5449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 5449 transitions. [2022-02-10 02:51:17,386 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 5449 transitions. Word has length 23 [2022-02-10 02:51:17,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:17,386 INFO L470 AbstractCegarLoop]: Abstraction has 1756 states and 5449 transitions. [2022-02-10 02:51:17,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:17,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 5449 transitions. [2022-02-10 02:51:17,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:17,390 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:17,390 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:17,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:17,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 199 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2022-02-10 02:51:17,612 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:17,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:17,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1896128525, now seen corresponding path program 198 times [2022-02-10 02:51:17,613 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:17,613 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69503396] [2022-02-10 02:51:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:17,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:17,756 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:17,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69503396] [2022-02-10 02:51:17,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69503396] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:17,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662308112] [2022-02-10 02:51:17,756 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:51:17,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:17,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:17,757 INFO L229 MonitoredProcess]: Starting monitored process 200 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:17,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Waiting until timeout for monitored process [2022-02-10 02:51:17,783 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:51:17,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:17,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:17,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:17,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:18,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662308112] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:18,373 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:18,373 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 30 [2022-02-10 02:51:18,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941021312] [2022-02-10 02:51:18,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:18,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 02:51:18,373 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:18,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 02:51:18,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:51:18,374 INFO L87 Difference]: Start difference. First operand 1756 states and 5449 transitions. Second operand has 31 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 30 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:18,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:18,716 INFO L93 Difference]: Finished difference Result 1930 states and 5735 transitions. [2022-02-10 02:51:18,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:51:18,716 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 30 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:18,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:18,720 INFO L225 Difference]: With dead ends: 1930 [2022-02-10 02:51:18,720 INFO L226 Difference]: Without dead ends: 1924 [2022-02-10 02:51:18,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:51:18,720 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 182 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:18,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 441 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:18,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2022-02-10 02:51:18,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1775. [2022-02-10 02:51:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1774 states have (on average 3.1099210822998873) internal successors, (5517), 1774 states have internal predecessors, (5517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 5517 transitions. [2022-02-10 02:51:18,753 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 5517 transitions. Word has length 23 [2022-02-10 02:51:18,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:18,753 INFO L470 AbstractCegarLoop]: Abstraction has 1775 states and 5517 transitions. [2022-02-10 02:51:18,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 30 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:18,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 5517 transitions. [2022-02-10 02:51:18,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:18,756 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:18,756 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:18,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:18,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203,200 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:18,956 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:18,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:18,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1052120145, now seen corresponding path program 199 times [2022-02-10 02:51:18,957 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:18,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092254734] [2022-02-10 02:51:18,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:18,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:19,105 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:19,105 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:19,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092254734] [2022-02-10 02:51:19,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092254734] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:19,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854060188] [2022-02-10 02:51:19,105 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:51:19,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:19,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:19,106 INFO L229 MonitoredProcess]: Starting monitored process 201 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:19,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Waiting until timeout for monitored process [2022-02-10 02:51:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:19,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:19,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:19,359 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:19,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:19,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854060188] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:19,727 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:19,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 31 [2022-02-10 02:51:19,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481370940] [2022-02-10 02:51:19,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:19,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:51:19,728 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:19,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:51:19,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:51:19,728 INFO L87 Difference]: Start difference. First operand 1775 states and 5517 transitions. Second operand has 32 states, 32 states have (on average 1.6875) internal successors, (54), 31 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:20,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:20,065 INFO L93 Difference]: Finished difference Result 1918 states and 5720 transitions. [2022-02-10 02:51:20,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:51:20,065 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.6875) internal successors, (54), 31 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:20,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:20,069 INFO L225 Difference]: With dead ends: 1918 [2022-02-10 02:51:20,069 INFO L226 Difference]: Without dead ends: 1913 [2022-02-10 02:51:20,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=1013, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:51:20,069 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 125 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:20,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 481 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:20,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2022-02-10 02:51:20,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1775. [2022-02-10 02:51:20,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1774 states have (on average 3.1099210822998873) internal successors, (5517), 1774 states have internal predecessors, (5517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:20,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 5517 transitions. [2022-02-10 02:51:20,101 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 5517 transitions. Word has length 23 [2022-02-10 02:51:20,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:20,101 INFO L470 AbstractCegarLoop]: Abstraction has 1775 states and 5517 transitions. [2022-02-10 02:51:20,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.6875) internal successors, (54), 31 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:20,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 5517 transitions. [2022-02-10 02:51:20,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:20,103 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:20,103 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:20,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Ended with exit code 0 [2022-02-10 02:51:20,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 201 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable204 [2022-02-10 02:51:20,304 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:20,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:20,304 INFO L85 PathProgramCache]: Analyzing trace with hash 404373615, now seen corresponding path program 200 times [2022-02-10 02:51:20,304 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:20,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470306489] [2022-02-10 02:51:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:20,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:20,454 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:20,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470306489] [2022-02-10 02:51:20,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470306489] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:20,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991533154] [2022-02-10 02:51:20,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:51:20,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:20,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:20,456 INFO L229 MonitoredProcess]: Starting monitored process 202 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:20,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Waiting until timeout for monitored process [2022-02-10 02:51:20,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:51:20,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:20,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:20,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:20,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:21,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991533154] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:21,081 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:21,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 29 [2022-02-10 02:51:21,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367523571] [2022-02-10 02:51:21,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:21,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:51:21,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:21,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:51:21,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:51:21,081 INFO L87 Difference]: Start difference. First operand 1775 states and 5517 transitions. Second operand has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 29 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:21,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:21,477 INFO L93 Difference]: Finished difference Result 1916 states and 5707 transitions. [2022-02-10 02:51:21,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:51:21,477 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 29 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:21,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:21,480 INFO L225 Difference]: With dead ends: 1916 [2022-02-10 02:51:21,481 INFO L226 Difference]: Without dead ends: 1909 [2022-02-10 02:51:21,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:51:21,481 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 148 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:21,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 482 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:21,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2022-02-10 02:51:21,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1775. [2022-02-10 02:51:21,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1774 states have (on average 3.1093573844419393) internal successors, (5516), 1774 states have internal predecessors, (5516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:21,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 5516 transitions. [2022-02-10 02:51:21,503 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 5516 transitions. Word has length 23 [2022-02-10 02:51:21,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:21,503 INFO L470 AbstractCegarLoop]: Abstraction has 1775 states and 5516 transitions. [2022-02-10 02:51:21,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 29 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:21,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 5516 transitions. [2022-02-10 02:51:21,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:21,505 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:21,505 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:21,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Ended with exit code 0 [2022-02-10 02:51:21,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,202 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:21,706 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:21,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1294504077, now seen corresponding path program 201 times [2022-02-10 02:51:21,706 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:21,706 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118637715] [2022-02-10 02:51:21,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:21,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:21,863 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:21,863 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:21,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118637715] [2022-02-10 02:51:21,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118637715] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:21,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141220974] [2022-02-10 02:51:21,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:51:21,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:21,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:21,865 INFO L229 MonitoredProcess]: Starting monitored process 203 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:21,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Waiting until timeout for monitored process [2022-02-10 02:51:21,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:51:21,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:21,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:21,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:22,127 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:22,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:22,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141220974] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:22,475 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:22,475 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 28 [2022-02-10 02:51:22,475 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001770674] [2022-02-10 02:51:22,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:22,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 02:51:22,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:22,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 02:51:22,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:51:22,476 INFO L87 Difference]: Start difference. First operand 1775 states and 5516 transitions. Second operand has 29 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:22,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:22,852 INFO L93 Difference]: Finished difference Result 1887 states and 5652 transitions. [2022-02-10 02:51:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:51:22,852 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:22,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:22,855 INFO L225 Difference]: With dead ends: 1887 [2022-02-10 02:51:22,855 INFO L226 Difference]: Without dead ends: 1879 [2022-02-10 02:51:22,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:51:22,856 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 119 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:22,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 377 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:22,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-02-10 02:51:22,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1775. [2022-02-10 02:51:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1774 states have (on average 3.108793686583991) internal successors, (5515), 1774 states have internal predecessors, (5515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:22,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 5515 transitions. [2022-02-10 02:51:22,885 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 5515 transitions. Word has length 23 [2022-02-10 02:51:22,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:22,885 INFO L470 AbstractCegarLoop]: Abstraction has 1775 states and 5515 transitions. [2022-02-10 02:51:22,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:22,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 5515 transitions. [2022-02-10 02:51:22,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:22,887 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:22,887 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:22,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Ended with exit code 0 [2022-02-10 02:51:23,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 203 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2022-02-10 02:51:23,088 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:23,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:23,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1874862319, now seen corresponding path program 202 times [2022-02-10 02:51:23,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:23,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795151086] [2022-02-10 02:51:23,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:23,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:23,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:23,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795151086] [2022-02-10 02:51:23,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795151086] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:23,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686636067] [2022-02-10 02:51:23,248 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:51:23,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:23,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:23,249 INFO L229 MonitoredProcess]: Starting monitored process 204 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:23,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Waiting until timeout for monitored process [2022-02-10 02:51:23,274 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:51:23,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:23,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:23,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:23,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:23,818 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:23,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686636067] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:23,818 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:23,818 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 27 [2022-02-10 02:51:23,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931392505] [2022-02-10 02:51:23,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:23,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 02:51:23,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:23,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 02:51:23,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:51:23,819 INFO L87 Difference]: Start difference. First operand 1775 states and 5515 transitions. Second operand has 28 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:24,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:24,216 INFO L93 Difference]: Finished difference Result 1864 states and 5617 transitions. [2022-02-10 02:51:24,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:51:24,216 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:24,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:24,219 INFO L225 Difference]: With dead ends: 1864 [2022-02-10 02:51:24,219 INFO L226 Difference]: Without dead ends: 1860 [2022-02-10 02:51:24,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:51:24,220 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 110 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:24,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 394 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:24,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2022-02-10 02:51:24,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1775. [2022-02-10 02:51:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1774 states have (on average 3.108793686583991) internal successors, (5515), 1774 states have internal predecessors, (5515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:24,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 5515 transitions. [2022-02-10 02:51:24,242 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 5515 transitions. Word has length 23 [2022-02-10 02:51:24,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:24,242 INFO L470 AbstractCegarLoop]: Abstraction has 1775 states and 5515 transitions. [2022-02-10 02:51:24,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:24,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 5515 transitions. [2022-02-10 02:51:24,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:24,244 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:24,244 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:24,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Ended with exit code 0 [2022-02-10 02:51:24,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable207 [2022-02-10 02:51:24,445 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:24,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:24,445 INFO L85 PathProgramCache]: Analyzing trace with hash -177218581, now seen corresponding path program 203 times [2022-02-10 02:51:24,445 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:24,445 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831634065] [2022-02-10 02:51:24,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:24,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:24,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:24,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:24,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831634065] [2022-02-10 02:51:24,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831634065] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:24,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336791156] [2022-02-10 02:51:24,602 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:51:24,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:24,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:24,603 INFO L229 MonitoredProcess]: Starting monitored process 205 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:24,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Waiting until timeout for monitored process [2022-02-10 02:51:24,629 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:51:24,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:24,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:24,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:24,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:25,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336791156] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:25,225 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:25,225 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 14] total 28 [2022-02-10 02:51:25,225 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260760925] [2022-02-10 02:51:25,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:25,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 02:51:25,225 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:25,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 02:51:25,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:51:25,226 INFO L87 Difference]: Start difference. First operand 1775 states and 5515 transitions. Second operand has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:25,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:25,567 INFO L93 Difference]: Finished difference Result 1884 states and 5631 transitions. [2022-02-10 02:51:25,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:51:25,567 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:25,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:25,570 INFO L225 Difference]: With dead ends: 1884 [2022-02-10 02:51:25,570 INFO L226 Difference]: Without dead ends: 1876 [2022-02-10 02:51:25,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:51:25,570 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 228 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:25,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 343 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:25,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2022-02-10 02:51:25,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1770. [2022-02-10 02:51:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1769 states have (on average 3.1074053137365745) internal successors, (5497), 1769 states have internal predecessors, (5497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:25,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 5497 transitions. [2022-02-10 02:51:25,593 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 5497 transitions. Word has length 23 [2022-02-10 02:51:25,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:25,593 INFO L470 AbstractCegarLoop]: Abstraction has 1770 states and 5497 transitions. [2022-02-10 02:51:25,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:25,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 5497 transitions. [2022-02-10 02:51:25,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:25,596 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:25,596 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:25,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Ended with exit code 0 [2022-02-10 02:51:25,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,205 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:25,796 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:25,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:25,797 INFO L85 PathProgramCache]: Analyzing trace with hash -417021201, now seen corresponding path program 204 times [2022-02-10 02:51:25,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:25,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111312304] [2022-02-10 02:51:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:25,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:25,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:25,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111312304] [2022-02-10 02:51:25,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111312304] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:25,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638865768] [2022-02-10 02:51:25,959 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:51:25,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:25,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:25,960 INFO L229 MonitoredProcess]: Starting monitored process 206 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:25,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Waiting until timeout for monitored process [2022-02-10 02:51:25,986 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:51:25,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:25,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:25,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:26,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:26,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638865768] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:26,563 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:26,563 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 27 [2022-02-10 02:51:26,563 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6580205] [2022-02-10 02:51:26,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:26,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 02:51:26,563 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:26,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 02:51:26,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:51:26,563 INFO L87 Difference]: Start difference. First operand 1770 states and 5497 transitions. Second operand has 28 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:26,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:26,904 INFO L93 Difference]: Finished difference Result 1837 states and 5567 transitions. [2022-02-10 02:51:26,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:51:26,904 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:26,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:26,907 INFO L225 Difference]: With dead ends: 1837 [2022-02-10 02:51:26,907 INFO L226 Difference]: Without dead ends: 1833 [2022-02-10 02:51:26,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:51:26,907 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 108 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:26,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 323 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:26,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2022-02-10 02:51:26,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 1765. [2022-02-10 02:51:26,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1765 states, 1764 states have (on average 3.1077097505668934) internal successors, (5482), 1764 states have internal predecessors, (5482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:26,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 5482 transitions. [2022-02-10 02:51:26,930 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 5482 transitions. Word has length 23 [2022-02-10 02:51:26,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:26,930 INFO L470 AbstractCegarLoop]: Abstraction has 1765 states and 5482 transitions. [2022-02-10 02:51:26,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:26,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 5482 transitions. [2022-02-10 02:51:26,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:26,932 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:26,932 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:26,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Ended with exit code 0 [2022-02-10 02:51:27,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,206 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:27,133 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:27,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:27,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1796898155, now seen corresponding path program 205 times [2022-02-10 02:51:27,133 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:27,133 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760200338] [2022-02-10 02:51:27,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:27,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:27,273 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:27,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760200338] [2022-02-10 02:51:27,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760200338] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:27,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624200212] [2022-02-10 02:51:27,273 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:51:27,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:27,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:27,274 INFO L229 MonitoredProcess]: Starting monitored process 207 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:27,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Waiting until timeout for monitored process [2022-02-10 02:51:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:27,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:27,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:27,499 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:27,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:27,868 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:27,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624200212] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:27,869 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:27,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 30 [2022-02-10 02:51:27,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925949648] [2022-02-10 02:51:27,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:27,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 02:51:27,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:27,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 02:51:27,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:51:27,869 INFO L87 Difference]: Start difference. First operand 1765 states and 5482 transitions. Second operand has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:28,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:28,209 INFO L93 Difference]: Finished difference Result 1984 states and 5852 transitions. [2022-02-10 02:51:28,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:51:28,209 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:28,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:28,213 INFO L225 Difference]: With dead ends: 1984 [2022-02-10 02:51:28,213 INFO L226 Difference]: Without dead ends: 1978 [2022-02-10 02:51:28,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:51:28,213 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 207 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:28,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 443 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:28,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2022-02-10 02:51:28,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1795. [2022-02-10 02:51:28,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 3.1153846153846154) internal successors, (5589), 1794 states have internal predecessors, (5589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:28,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 5589 transitions. [2022-02-10 02:51:28,236 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 5589 transitions. Word has length 23 [2022-02-10 02:51:28,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:28,236 INFO L470 AbstractCegarLoop]: Abstraction has 1795 states and 5589 transitions. [2022-02-10 02:51:28,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:28,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 5589 transitions. [2022-02-10 02:51:28,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:28,239 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:28,239 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:28,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Ended with exit code 0 [2022-02-10 02:51:28,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2022-02-10 02:51:28,439 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:28,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:28,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1654060761, now seen corresponding path program 206 times [2022-02-10 02:51:28,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:28,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216995874] [2022-02-10 02:51:28,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:28,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:28,587 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:28,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216995874] [2022-02-10 02:51:28,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216995874] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:28,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457782766] [2022-02-10 02:51:28,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:51:28,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:28,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:28,588 INFO L229 MonitoredProcess]: Starting monitored process 208 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:28,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Waiting until timeout for monitored process [2022-02-10 02:51:28,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:51:28,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:28,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:28,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:28,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:29,194 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:29,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457782766] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:29,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:29,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 31 [2022-02-10 02:51:29,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115058106] [2022-02-10 02:51:29,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:29,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:51:29,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:29,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:51:29,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:51:29,195 INFO L87 Difference]: Start difference. First operand 1795 states and 5589 transitions. Second operand has 32 states, 32 states have (on average 1.65625) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:29,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:29,546 INFO L93 Difference]: Finished difference Result 1974 states and 5837 transitions. [2022-02-10 02:51:29,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:51:29,547 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.65625) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:29,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:29,550 INFO L225 Difference]: With dead ends: 1974 [2022-02-10 02:51:29,550 INFO L226 Difference]: Without dead ends: 1969 [2022-02-10 02:51:29,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=1013, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:51:29,550 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 170 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:29,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 526 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:29,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2022-02-10 02:51:29,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1795. [2022-02-10 02:51:29,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 3.1153846153846154) internal successors, (5589), 1794 states have internal predecessors, (5589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:29,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 5589 transitions. [2022-02-10 02:51:29,573 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 5589 transitions. Word has length 23 [2022-02-10 02:51:29,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:29,573 INFO L470 AbstractCegarLoop]: Abstraction has 1795 states and 5589 transitions. [2022-02-10 02:51:29,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.65625) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:29,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 5589 transitions. [2022-02-10 02:51:29,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:29,575 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:29,575 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:29,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Ended with exit code 0 [2022-02-10 02:51:29,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2022-02-10 02:51:29,776 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:29,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:29,776 INFO L85 PathProgramCache]: Analyzing trace with hash -197567001, now seen corresponding path program 207 times [2022-02-10 02:51:29,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:29,776 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444875595] [2022-02-10 02:51:29,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:29,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:29,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:29,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444875595] [2022-02-10 02:51:29,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444875595] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:29,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837315390] [2022-02-10 02:51:29,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:51:29,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:29,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:29,927 INFO L229 MonitoredProcess]: Starting monitored process 209 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:29,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Waiting until timeout for monitored process [2022-02-10 02:51:29,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:51:29,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:29,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:29,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:30,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:30,569 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:30,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837315390] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:30,570 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:30,570 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 29 [2022-02-10 02:51:30,570 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989211834] [2022-02-10 02:51:30,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:30,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:51:30,570 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:30,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:51:30,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:51:30,570 INFO L87 Difference]: Start difference. First operand 1795 states and 5589 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:30,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:30,969 INFO L93 Difference]: Finished difference Result 1979 states and 5837 transitions. [2022-02-10 02:51:30,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:51:30,969 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:30,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:30,972 INFO L225 Difference]: With dead ends: 1979 [2022-02-10 02:51:30,972 INFO L226 Difference]: Without dead ends: 1972 [2022-02-10 02:51:30,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:51:30,973 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 125 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:30,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 505 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:30,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2022-02-10 02:51:30,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1795. [2022-02-10 02:51:30,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 3.1148272017837235) internal successors, (5588), 1794 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:30,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 5588 transitions. [2022-02-10 02:51:30,996 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 5588 transitions. Word has length 23 [2022-02-10 02:51:30,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:30,996 INFO L470 AbstractCegarLoop]: Abstraction has 1795 states and 5588 transitions. [2022-02-10 02:51:30,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:30,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 5588 transitions. [2022-02-10 02:51:30,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:30,998 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:30,998 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:31,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Ended with exit code 0 [2022-02-10 02:51:31,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2022-02-10 02:51:31,199 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:31,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:31,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1896444693, now seen corresponding path program 208 times [2022-02-10 02:51:31,199 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:31,199 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104905318] [2022-02-10 02:51:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:31,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:31,357 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:31,357 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104905318] [2022-02-10 02:51:31,357 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104905318] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:31,357 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748594846] [2022-02-10 02:51:31,357 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:51:31,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:31,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:31,358 INFO L229 MonitoredProcess]: Starting monitored process 210 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:31,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Waiting until timeout for monitored process [2022-02-10 02:51:31,384 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:51:31,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:31,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:31,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:31,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:31,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748594846] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:31,967 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:31,967 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 28 [2022-02-10 02:51:31,967 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210369535] [2022-02-10 02:51:31,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:31,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 02:51:31,967 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:31,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 02:51:31,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:51:31,968 INFO L87 Difference]: Start difference. First operand 1795 states and 5588 transitions. Second operand has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 28 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:32,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:32,418 INFO L93 Difference]: Finished difference Result 1971 states and 5812 transitions. [2022-02-10 02:51:32,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:51:32,418 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 28 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:32,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:32,422 INFO L225 Difference]: With dead ends: 1971 [2022-02-10 02:51:32,422 INFO L226 Difference]: Without dead ends: 1963 [2022-02-10 02:51:32,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:51:32,422 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 182 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:32,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 513 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:32,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2022-02-10 02:51:32,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1795. [2022-02-10 02:51:32,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 3.1142697881828316) internal successors, (5587), 1794 states have internal predecessors, (5587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:32,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 5587 transitions. [2022-02-10 02:51:32,446 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 5587 transitions. Word has length 23 [2022-02-10 02:51:32,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:32,446 INFO L470 AbstractCegarLoop]: Abstraction has 1795 states and 5587 transitions. [2022-02-10 02:51:32,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 28 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:32,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 5587 transitions. [2022-02-10 02:51:32,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:32,448 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:32,448 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:32,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Ended with exit code 0 [2022-02-10 02:51:32,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2022-02-10 02:51:32,649 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:32,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:32,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1272921703, now seen corresponding path program 209 times [2022-02-10 02:51:32,649 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:32,649 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289463614] [2022-02-10 02:51:32,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:32,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:32,808 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:32,809 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:32,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289463614] [2022-02-10 02:51:32,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289463614] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:32,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104100020] [2022-02-10 02:51:32,809 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:51:32,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:32,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:32,810 INFO L229 MonitoredProcess]: Starting monitored process 211 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:32,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Waiting until timeout for monitored process [2022-02-10 02:51:32,835 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:51:32,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:32,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:32,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:33,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:33,396 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:33,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104100020] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:33,396 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:33,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 27 [2022-02-10 02:51:33,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142644275] [2022-02-10 02:51:33,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:33,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 02:51:33,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:33,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 02:51:33,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:51:33,397 INFO L87 Difference]: Start difference. First operand 1795 states and 5587 transitions. Second operand has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:33,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:33,822 INFO L93 Difference]: Finished difference Result 1932 states and 5750 transitions. [2022-02-10 02:51:33,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:51:33,822 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:33,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:33,825 INFO L225 Difference]: With dead ends: 1932 [2022-02-10 02:51:33,825 INFO L226 Difference]: Without dead ends: 1923 [2022-02-10 02:51:33,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:51:33,825 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 137 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:33,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 425 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:33,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2022-02-10 02:51:33,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1793. [2022-02-10 02:51:33,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1792 states have (on average 3.1160714285714284) internal successors, (5584), 1792 states have internal predecessors, (5584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:33,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 5584 transitions. [2022-02-10 02:51:33,848 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 5584 transitions. Word has length 23 [2022-02-10 02:51:33,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:33,848 INFO L470 AbstractCegarLoop]: Abstraction has 1793 states and 5584 transitions. [2022-02-10 02:51:33,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:33,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 5584 transitions. [2022-02-10 02:51:33,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:51:33,850 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:33,850 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:33,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Ended with exit code 0 [2022-02-10 02:51:34,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 211 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable214 [2022-02-10 02:51:34,051 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:34,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:34,051 INFO L85 PathProgramCache]: Analyzing trace with hash 739032171, now seen corresponding path program 210 times [2022-02-10 02:51:34,051 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:34,051 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316019191] [2022-02-10 02:51:34,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:34,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:34,216 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:34,217 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:34,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316019191] [2022-02-10 02:51:34,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316019191] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:34,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589145024] [2022-02-10 02:51:34,217 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:51:34,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:34,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:34,218 INFO L229 MonitoredProcess]: Starting monitored process 212 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:34,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Waiting until timeout for monitored process [2022-02-10 02:51:34,244 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:51:34,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:34,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 02:51:34,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:34,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:34,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589145024] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:34,779 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:34,779 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 26 [2022-02-10 02:51:34,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338255727] [2022-02-10 02:51:34,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:34,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:51:34,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:34,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:51:34,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:51:34,780 INFO L87 Difference]: Start difference. First operand 1793 states and 5584 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:35,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:35,184 INFO L93 Difference]: Finished difference Result 1906 states and 5709 transitions. [2022-02-10 02:51:35,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:51:35,184 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 02:51:35,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:35,187 INFO L225 Difference]: With dead ends: 1906 [2022-02-10 02:51:35,187 INFO L226 Difference]: Without dead ends: 1902 [2022-02-10 02:51:35,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 26 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:51:35,188 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 128 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:35,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 380 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:35,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2022-02-10 02:51:35,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1793. [2022-02-10 02:51:35,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1792 states have (on average 3.1160714285714284) internal successors, (5584), 1792 states have internal predecessors, (5584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:35,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 5584 transitions. [2022-02-10 02:51:35,210 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 5584 transitions. Word has length 23 [2022-02-10 02:51:35,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:35,210 INFO L470 AbstractCegarLoop]: Abstraction has 1793 states and 5584 transitions. [2022-02-10 02:51:35,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:35,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 5584 transitions. [2022-02-10 02:51:35,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:35,213 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:35,213 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:35,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Ended with exit code 0 [2022-02-10 02:51:35,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215,212 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:35,413 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:35,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:35,413 INFO L85 PathProgramCache]: Analyzing trace with hash -344727285, now seen corresponding path program 211 times [2022-02-10 02:51:35,414 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:35,414 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813158797] [2022-02-10 02:51:35,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:35,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:35,485 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:35,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813158797] [2022-02-10 02:51:35,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813158797] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:35,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845368750] [2022-02-10 02:51:35,485 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:51:35,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:35,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:35,486 INFO L229 MonitoredProcess]: Starting monitored process 213 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:35,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Waiting until timeout for monitored process [2022-02-10 02:51:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:35,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:35,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:35,615 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:35,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:35,654 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:35,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845368750] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:35,655 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:35,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 21 [2022-02-10 02:51:35,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344774283] [2022-02-10 02:51:35,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:35,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:51:35,655 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:35,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:51:35,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:51:35,655 INFO L87 Difference]: Start difference. First operand 1793 states and 5584 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:35,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:35,804 INFO L93 Difference]: Finished difference Result 2219 states and 6798 transitions. [2022-02-10 02:51:35,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:51:35,805 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:35,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:35,808 INFO L225 Difference]: With dead ends: 2219 [2022-02-10 02:51:35,808 INFO L226 Difference]: Without dead ends: 2211 [2022-02-10 02:51:35,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:51:35,808 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 69 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:35,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 69 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:51:35,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2022-02-10 02:51:35,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 1790. [2022-02-10 02:51:35,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1790 states, 1789 states have (on average 3.1190609278926775) internal successors, (5580), 1789 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:35,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 5580 transitions. [2022-02-10 02:51:35,832 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 5580 transitions. Word has length 24 [2022-02-10 02:51:35,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:35,832 INFO L470 AbstractCegarLoop]: Abstraction has 1790 states and 5580 transitions. [2022-02-10 02:51:35,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:35,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 5580 transitions. [2022-02-10 02:51:35,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:35,841 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:35,841 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:35,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Ended with exit code 0 [2022-02-10 02:51:36,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216,213 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:36,042 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:36,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:36,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2085787953, now seen corresponding path program 212 times [2022-02-10 02:51:36,042 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:36,042 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750722431] [2022-02-10 02:51:36,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:36,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:36,114 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:36,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:36,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750722431] [2022-02-10 02:51:36,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750722431] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:36,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941286181] [2022-02-10 02:51:36,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:51:36,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:36,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:36,116 INFO L229 MonitoredProcess]: Starting monitored process 214 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:36,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Waiting until timeout for monitored process [2022-02-10 02:51:36,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:51:36,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:36,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:36,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:36,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:36,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941286181] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:36,277 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:36,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 21 [2022-02-10 02:51:36,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148943263] [2022-02-10 02:51:36,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:36,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:51:36,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:36,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:51:36,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:51:36,278 INFO L87 Difference]: Start difference. First operand 1790 states and 5580 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:36,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:36,422 INFO L93 Difference]: Finished difference Result 2291 states and 7006 transitions. [2022-02-10 02:51:36,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:51:36,422 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:36,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:36,426 INFO L225 Difference]: With dead ends: 2291 [2022-02-10 02:51:36,426 INFO L226 Difference]: Without dead ends: 2291 [2022-02-10 02:51:36,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=237, Invalid=519, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:51:36,426 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 54 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:36,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 88 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:51:36,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2022-02-10 02:51:36,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 1833. [2022-02-10 02:51:36,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1832 states have (on average 3.1151746724890828) internal successors, (5707), 1832 states have internal predecessors, (5707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:36,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 5707 transitions. [2022-02-10 02:51:36,451 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 5707 transitions. Word has length 24 [2022-02-10 02:51:36,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:36,451 INFO L470 AbstractCegarLoop]: Abstraction has 1833 states and 5707 transitions. [2022-02-10 02:51:36,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:36,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 5707 transitions. [2022-02-10 02:51:36,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:36,454 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:36,454 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:36,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Ended with exit code 0 [2022-02-10 02:51:36,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217 [2022-02-10 02:51:36,655 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:36,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:36,655 INFO L85 PathProgramCache]: Analyzing trace with hash -712181873, now seen corresponding path program 213 times [2022-02-10 02:51:36,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:36,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549804896] [2022-02-10 02:51:36,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:36,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:36,725 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:36,725 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:36,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549804896] [2022-02-10 02:51:36,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549804896] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:36,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554185052] [2022-02-10 02:51:36,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:51:36,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:36,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:36,726 INFO L229 MonitoredProcess]: Starting monitored process 215 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:36,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Waiting until timeout for monitored process [2022-02-10 02:51:36,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:51:36,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:36,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:36,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:36,867 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:36,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:36,904 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:36,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554185052] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:36,905 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:36,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:51:36,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785469558] [2022-02-10 02:51:36,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:36,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:51:36,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:36,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:51:36,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:51:36,905 INFO L87 Difference]: Start difference. First operand 1833 states and 5707 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:37,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:37,557 INFO L93 Difference]: Finished difference Result 3079 states and 9271 transitions. [2022-02-10 02:51:37,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-10 02:51:37,557 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:37,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:37,562 INFO L225 Difference]: With dead ends: 3079 [2022-02-10 02:51:37,562 INFO L226 Difference]: Without dead ends: 3074 [2022-02-10 02:51:37,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1252 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1502, Invalid=3190, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 02:51:37,563 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 187 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:37,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 104 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:37,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2022-02-10 02:51:37,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 2564. [2022-02-10 02:51:37,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2564 states, 2563 states have (on average 3.1806476785017557) internal successors, (8152), 2563 states have internal predecessors, (8152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 8152 transitions. [2022-02-10 02:51:37,613 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 8152 transitions. Word has length 24 [2022-02-10 02:51:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:37,613 INFO L470 AbstractCegarLoop]: Abstraction has 2564 states and 8152 transitions. [2022-02-10 02:51:37,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:37,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 8152 transitions. [2022-02-10 02:51:37,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:37,616 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:37,616 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:37,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:37,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,215 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:37,817 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:37,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1588320267, now seen corresponding path program 214 times [2022-02-10 02:51:37,817 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:37,817 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927135888] [2022-02-10 02:51:37,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:37,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:37,886 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:37,887 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:37,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927135888] [2022-02-10 02:51:37,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927135888] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:37,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905426547] [2022-02-10 02:51:37,887 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:51:37,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:37,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:37,888 INFO L229 MonitoredProcess]: Starting monitored process 216 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:37,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Waiting until timeout for monitored process [2022-02-10 02:51:37,913 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:51:37,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:37,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:37,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:38,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:38,065 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:38,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905426547] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:38,065 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:38,066 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:51:38,066 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201730804] [2022-02-10 02:51:38,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:38,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:51:38,066 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:38,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:51:38,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:51:38,066 INFO L87 Difference]: Start difference. First operand 2564 states and 8152 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:38,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:38,643 INFO L93 Difference]: Finished difference Result 2927 states and 8831 transitions. [2022-02-10 02:51:38,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-10 02:51:38,643 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:38,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:38,648 INFO L225 Difference]: With dead ends: 2927 [2022-02-10 02:51:38,648 INFO L226 Difference]: Without dead ends: 2923 [2022-02-10 02:51:38,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1174, Invalid=2986, Unknown=0, NotChecked=0, Total=4160 [2022-02-10 02:51:38,648 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 180 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:38,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 131 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:38,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2022-02-10 02:51:38,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2229. [2022-02-10 02:51:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 2228 states have (on average 3.1149012567324954) internal successors, (6940), 2228 states have internal predecessors, (6940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:38,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 6940 transitions. [2022-02-10 02:51:38,682 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 6940 transitions. Word has length 24 [2022-02-10 02:51:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:38,683 INFO L470 AbstractCegarLoop]: Abstraction has 2229 states and 6940 transitions. [2022-02-10 02:51:38,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:38,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 6940 transitions. [2022-02-10 02:51:38,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:38,685 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:38,685 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:38,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Ended with exit code 0 [2022-02-10 02:51:38,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,216 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:38,887 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:38,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:38,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2072298613, now seen corresponding path program 215 times [2022-02-10 02:51:38,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:38,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668804736] [2022-02-10 02:51:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:38,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:38,970 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:38,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668804736] [2022-02-10 02:51:38,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668804736] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:38,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263740708] [2022-02-10 02:51:38,970 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:51:38,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:38,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:38,972 INFO L229 MonitoredProcess]: Starting monitored process 217 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:38,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Waiting until timeout for monitored process [2022-02-10 02:51:38,997 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:51:38,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:38,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:38,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:39,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:39,146 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:39,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263740708] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:39,146 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:39,146 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:51:39,146 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684008452] [2022-02-10 02:51:39,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:39,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:51:39,146 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:39,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:51:39,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:51:39,147 INFO L87 Difference]: Start difference. First operand 2229 states and 6940 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:39,843 INFO L93 Difference]: Finished difference Result 2844 states and 8269 transitions. [2022-02-10 02:51:39,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-10 02:51:39,843 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:39,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:39,847 INFO L225 Difference]: With dead ends: 2844 [2022-02-10 02:51:39,847 INFO L226 Difference]: Without dead ends: 2844 [2022-02-10 02:51:39,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1051 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1639, Invalid=2917, Unknown=0, NotChecked=0, Total=4556 [2022-02-10 02:51:39,848 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 181 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:39,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 226 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:39,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2022-02-10 02:51:39,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2380. [2022-02-10 02:51:39,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2379 states have (on average 3.1349306431273645) internal successors, (7458), 2379 states have internal predecessors, (7458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:39,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 7458 transitions. [2022-02-10 02:51:39,881 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 7458 transitions. Word has length 24 [2022-02-10 02:51:39,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:39,881 INFO L470 AbstractCegarLoop]: Abstraction has 2380 states and 7458 transitions. [2022-02-10 02:51:39,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:39,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 7458 transitions. [2022-02-10 02:51:39,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:39,884 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:39,884 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:39,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Ended with exit code 0 [2022-02-10 02:51:40,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,217 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:40,085 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:40,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:40,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1005817261, now seen corresponding path program 216 times [2022-02-10 02:51:40,085 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:40,085 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312142498] [2022-02-10 02:51:40,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:40,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:40,156 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:40,156 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312142498] [2022-02-10 02:51:40,157 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312142498] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:40,157 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880703214] [2022-02-10 02:51:40,157 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:51:40,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:40,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:40,158 INFO L229 MonitoredProcess]: Starting monitored process 218 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:40,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Waiting until timeout for monitored process [2022-02-10 02:51:40,184 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:51:40,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:40,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:40,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:40,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:40,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880703214] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:40,331 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:40,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:51:40,332 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628932405] [2022-02-10 02:51:40,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:40,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:51:40,332 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:40,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:51:40,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:51:40,332 INFO L87 Difference]: Start difference. First operand 2380 states and 7458 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:41,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:41,121 INFO L93 Difference]: Finished difference Result 2590 states and 7744 transitions. [2022-02-10 02:51:41,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-10 02:51:41,121 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:41,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:41,125 INFO L225 Difference]: With dead ends: 2590 [2022-02-10 02:51:41,125 INFO L226 Difference]: Without dead ends: 2588 [2022-02-10 02:51:41,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2587, Invalid=4895, Unknown=0, NotChecked=0, Total=7482 [2022-02-10 02:51:41,126 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 153 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:41,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 141 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:41,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2022-02-10 02:51:41,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 2105. [2022-02-10 02:51:41,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2105 states, 2104 states have (on average 3.091730038022814) internal successors, (6505), 2104 states have internal predecessors, (6505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:41,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 6505 transitions. [2022-02-10 02:51:41,157 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 6505 transitions. Word has length 24 [2022-02-10 02:51:41,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:41,157 INFO L470 AbstractCegarLoop]: Abstraction has 2105 states and 6505 transitions. [2022-02-10 02:51:41,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:41,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 6505 transitions. [2022-02-10 02:51:41,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:41,159 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:41,159 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:41,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:41,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2022-02-10 02:51:41,360 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:41,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:41,360 INFO L85 PathProgramCache]: Analyzing trace with hash -110557425, now seen corresponding path program 217 times [2022-02-10 02:51:41,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:41,360 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985177201] [2022-02-10 02:51:41,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:41,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:41,429 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:41,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985177201] [2022-02-10 02:51:41,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985177201] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:41,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275629909] [2022-02-10 02:51:41,429 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:51:41,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:41,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:41,431 INFO L229 MonitoredProcess]: Starting monitored process 219 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:41,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Waiting until timeout for monitored process [2022-02-10 02:51:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:41,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:41,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:41,594 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:41,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:41,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275629909] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:41,633 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:41,633 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:51:41,633 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954893306] [2022-02-10 02:51:41,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:41,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:51:41,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:41,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:51:41,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:51:41,633 INFO L87 Difference]: Start difference. First operand 2105 states and 6505 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:42,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:42,146 INFO L93 Difference]: Finished difference Result 2603 states and 7650 transitions. [2022-02-10 02:51:42,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-10 02:51:42,147 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:42,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:42,151 INFO L225 Difference]: With dead ends: 2603 [2022-02-10 02:51:42,151 INFO L226 Difference]: Without dead ends: 2599 [2022-02-10 02:51:42,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=967, Invalid=2693, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 02:51:42,151 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 199 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:42,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 112 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:42,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2599 states. [2022-02-10 02:51:42,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2599 to 2183. [2022-02-10 02:51:42,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2183 states, 2182 states have (on average 3.0989917506874427) internal successors, (6762), 2182 states have internal predecessors, (6762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 6762 transitions. [2022-02-10 02:51:42,181 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 6762 transitions. Word has length 24 [2022-02-10 02:51:42,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:42,182 INFO L470 AbstractCegarLoop]: Abstraction has 2183 states and 6762 transitions. [2022-02-10 02:51:42,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:42,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 6762 transitions. [2022-02-10 02:51:42,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:42,184 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:42,184 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:42,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Ended with exit code 0 [2022-02-10 02:51:42,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2022-02-10 02:51:42,385 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:42,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:42,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1236158325, now seen corresponding path program 218 times [2022-02-10 02:51:42,385 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:42,385 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760550716] [2022-02-10 02:51:42,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:42,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:42,456 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:42,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760550716] [2022-02-10 02:51:42,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760550716] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:42,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492020944] [2022-02-10 02:51:42,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:51:42,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:42,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:42,457 INFO L229 MonitoredProcess]: Starting monitored process 220 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:42,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (220)] Waiting until timeout for monitored process [2022-02-10 02:51:42,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:51:42,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:42,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:42,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:42,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:42,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492020944] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:42,633 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:42,633 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:51:42,633 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209916730] [2022-02-10 02:51:42,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:42,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:51:42,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:42,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:51:42,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:51:42,633 INFO L87 Difference]: Start difference. First operand 2183 states and 6762 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:43,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:43,080 INFO L93 Difference]: Finished difference Result 2748 states and 8169 transitions. [2022-02-10 02:51:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-10 02:51:43,081 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:43,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:43,085 INFO L225 Difference]: With dead ends: 2748 [2022-02-10 02:51:43,085 INFO L226 Difference]: Without dead ends: 2743 [2022-02-10 02:51:43,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=792, Invalid=2400, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 02:51:43,085 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 172 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:43,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 112 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:51:43,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2743 states. [2022-02-10 02:51:43,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2743 to 2247. [2022-02-10 02:51:43,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 3.110418521816563) internal successors, (6986), 2246 states have internal predecessors, (6986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:43,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 6986 transitions. [2022-02-10 02:51:43,118 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 6986 transitions. Word has length 24 [2022-02-10 02:51:43,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:43,118 INFO L470 AbstractCegarLoop]: Abstraction has 2247 states and 6986 transitions. [2022-02-10 02:51:43,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:43,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 6986 transitions. [2022-02-10 02:51:43,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:43,121 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:43,121 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:43,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (220)] Ended with exit code 0 [2022-02-10 02:51:43,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2022-02-10 02:51:43,321 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:43,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:43,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1770047857, now seen corresponding path program 219 times [2022-02-10 02:51:43,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:43,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258186221] [2022-02-10 02:51:43,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:43,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:43,402 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:43,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258186221] [2022-02-10 02:51:43,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258186221] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:43,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871915910] [2022-02-10 02:51:43,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:51:43,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:43,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:43,403 INFO L229 MonitoredProcess]: Starting monitored process 221 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:43,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (221)] Waiting until timeout for monitored process [2022-02-10 02:51:43,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:51:43,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:43,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:43,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:43,551 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:43,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:43,591 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:43,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871915910] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:43,592 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:43,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:51:43,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285460185] [2022-02-10 02:51:43,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:43,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:51:43,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:43,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:51:43,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:51:43,592 INFO L87 Difference]: Start difference. First operand 2247 states and 6986 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:44,002 INFO L93 Difference]: Finished difference Result 2997 states and 9081 transitions. [2022-02-10 02:51:44,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-10 02:51:44,002 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:44,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:44,007 INFO L225 Difference]: With dead ends: 2997 [2022-02-10 02:51:44,007 INFO L226 Difference]: Without dead ends: 2991 [2022-02-10 02:51:44,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=650, Invalid=2106, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 02:51:44,008 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 126 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:44,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 113 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:51:44,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2022-02-10 02:51:44,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 2289. [2022-02-10 02:51:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2288 states have (on average 3.11013986013986) internal successors, (7116), 2288 states have internal predecessors, (7116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:44,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 7116 transitions. [2022-02-10 02:51:44,050 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 7116 transitions. Word has length 24 [2022-02-10 02:51:44,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:44,050 INFO L470 AbstractCegarLoop]: Abstraction has 2289 states and 7116 transitions. [2022-02-10 02:51:44,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:44,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 7116 transitions. [2022-02-10 02:51:44,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:44,053 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:44,053 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:44,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (221)] Ended with exit code 0 [2022-02-10 02:51:44,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 221 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2022-02-10 02:51:44,253 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:44,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:44,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1140754165, now seen corresponding path program 220 times [2022-02-10 02:51:44,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:44,254 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234626970] [2022-02-10 02:51:44,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:44,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:44,325 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:44,325 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:44,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234626970] [2022-02-10 02:51:44,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234626970] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:44,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636518343] [2022-02-10 02:51:44,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:51:44,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:44,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:44,352 INFO L229 MonitoredProcess]: Starting monitored process 222 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:44,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Waiting until timeout for monitored process [2022-02-10 02:51:44,377 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:51:44,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:44,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:44,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:44,491 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:44,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:44,530 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:44,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636518343] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:44,530 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:44,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:51:44,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294203703] [2022-02-10 02:51:44,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:44,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:51:44,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:44,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:51:44,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:51:44,531 INFO L87 Difference]: Start difference. First operand 2289 states and 7116 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:44,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:44,880 INFO L93 Difference]: Finished difference Result 3084 states and 9432 transitions. [2022-02-10 02:51:44,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 02:51:44,880 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:44,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:44,884 INFO L225 Difference]: With dead ends: 3084 [2022-02-10 02:51:44,885 INFO L226 Difference]: Without dead ends: 3077 [2022-02-10 02:51:44,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=542, Invalid=1810, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 02:51:44,885 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 81 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:44,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 111 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:51:44,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2022-02-10 02:51:44,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 2315. [2022-02-10 02:51:44,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2315 states, 2314 states have (on average 3.098962834917891) internal successors, (7171), 2314 states have internal predecessors, (7171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:44,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 7171 transitions. [2022-02-10 02:51:44,932 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 7171 transitions. Word has length 24 [2022-02-10 02:51:44,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:44,932 INFO L470 AbstractCegarLoop]: Abstraction has 2315 states and 7171 transitions. [2022-02-10 02:51:44,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:44,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 7171 transitions. [2022-02-10 02:51:44,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:44,935 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:44,935 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:44,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Ended with exit code 0 [2022-02-10 02:51:45,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,222 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:45,136 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:45,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:45,136 INFO L85 PathProgramCache]: Analyzing trace with hash 707790671, now seen corresponding path program 221 times [2022-02-10 02:51:45,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:45,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206901236] [2022-02-10 02:51:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:45,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:45,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:45,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206901236] [2022-02-10 02:51:45,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206901236] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:45,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556545482] [2022-02-10 02:51:45,201 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:51:45,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:45,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:45,202 INFO L229 MonitoredProcess]: Starting monitored process 223 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:45,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (223)] Waiting until timeout for monitored process [2022-02-10 02:51:45,228 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:51:45,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:45,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:45,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:45,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:45,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556545482] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:45,405 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:45,405 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 22 [2022-02-10 02:51:45,405 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013042941] [2022-02-10 02:51:45,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:45,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:51:45,405 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:45,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:51:45,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:51:45,406 INFO L87 Difference]: Start difference. First operand 2315 states and 7171 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:46,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:46,155 INFO L93 Difference]: Finished difference Result 3178 states and 9043 transitions. [2022-02-10 02:51:46,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-10 02:51:46,155 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:46,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:46,161 INFO L225 Difference]: With dead ends: 3178 [2022-02-10 02:51:46,161 INFO L226 Difference]: Without dead ends: 3170 [2022-02-10 02:51:46,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1719, Invalid=3111, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 02:51:46,162 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 186 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:46,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 220 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:46,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2022-02-10 02:51:46,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 2530. [2022-02-10 02:51:46,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2529 states have (on average 3.120205614867537) internal successors, (7891), 2529 states have internal predecessors, (7891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:46,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 7891 transitions. [2022-02-10 02:51:46,219 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 7891 transitions. Word has length 24 [2022-02-10 02:51:46,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:46,219 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 7891 transitions. [2022-02-10 02:51:46,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 7891 transitions. [2022-02-10 02:51:46,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:46,222 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:46,222 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:46,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (223)] Ended with exit code 0 [2022-02-10 02:51:46,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 223 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2022-02-10 02:51:46,423 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:46,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:46,423 INFO L85 PathProgramCache]: Analyzing trace with hash -509060751, now seen corresponding path program 222 times [2022-02-10 02:51:46,423 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:46,423 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628797682] [2022-02-10 02:51:46,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:46,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:46,489 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:46,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628797682] [2022-02-10 02:51:46,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628797682] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:46,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658498002] [2022-02-10 02:51:46,489 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:51:46,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:46,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:46,490 INFO L229 MonitoredProcess]: Starting monitored process 224 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:46,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (224)] Waiting until timeout for monitored process [2022-02-10 02:51:46,516 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:51:46,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:46,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:46,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:46,630 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:46,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:46,669 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:46,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658498002] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:46,669 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:46,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 22 [2022-02-10 02:51:46,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761413446] [2022-02-10 02:51:46,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:46,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:51:46,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:46,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:51:46,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:51:46,670 INFO L87 Difference]: Start difference. First operand 2530 states and 7891 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:47,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:47,516 INFO L93 Difference]: Finished difference Result 2912 states and 8408 transitions. [2022-02-10 02:51:47,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-10 02:51:47,516 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:47,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:47,521 INFO L225 Difference]: With dead ends: 2912 [2022-02-10 02:51:47,521 INFO L226 Difference]: Without dead ends: 2909 [2022-02-10 02:51:47,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1865 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2386, Invalid=4924, Unknown=0, NotChecked=0, Total=7310 [2022-02-10 02:51:47,522 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 180 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:47,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 151 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:47,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2022-02-10 02:51:47,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 2107. [2022-02-10 02:51:47,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2107 states, 2106 states have (on average 3.04985754985755) internal successors, (6423), 2106 states have internal predecessors, (6423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2107 states to 2107 states and 6423 transitions. [2022-02-10 02:51:47,555 INFO L78 Accepts]: Start accepts. Automaton has 2107 states and 6423 transitions. Word has length 24 [2022-02-10 02:51:47,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:47,555 INFO L470 AbstractCegarLoop]: Abstraction has 2107 states and 6423 transitions. [2022-02-10 02:51:47,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:47,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2107 states and 6423 transitions. [2022-02-10 02:51:47,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:47,557 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:47,557 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:47,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (224)] Ended with exit code 0 [2022-02-10 02:51:47,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable227 [2022-02-10 02:51:47,758 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:47,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:47,758 INFO L85 PathProgramCache]: Analyzing trace with hash 28794827, now seen corresponding path program 223 times [2022-02-10 02:51:47,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:47,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104580002] [2022-02-10 02:51:47,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:47,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:47,844 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:47,845 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:47,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104580002] [2022-02-10 02:51:47,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104580002] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:47,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159720496] [2022-02-10 02:51:47,845 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:51:47,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:47,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:47,846 INFO L229 MonitoredProcess]: Starting monitored process 225 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:47,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (225)] Waiting until timeout for monitored process [2022-02-10 02:51:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:47,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:47,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:48,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:48,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159720496] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:48,041 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:48,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2022-02-10 02:51:48,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746320529] [2022-02-10 02:51:48,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:48,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:51:48,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:48,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:51:48,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:51:48,042 INFO L87 Difference]: Start difference. First operand 2107 states and 6423 transitions. Second operand has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:48,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:48,857 INFO L93 Difference]: Finished difference Result 2438 states and 6895 transitions. [2022-02-10 02:51:48,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-10 02:51:48,857 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:48,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:48,861 INFO L225 Difference]: With dead ends: 2438 [2022-02-10 02:51:48,861 INFO L226 Difference]: Without dead ends: 2434 [2022-02-10 02:51:48,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2147 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2548, Invalid=5284, Unknown=0, NotChecked=0, Total=7832 [2022-02-10 02:51:48,862 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 112 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:48,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 177 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:48,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2022-02-10 02:51:48,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2107. [2022-02-10 02:51:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2107 states, 2106 states have (on average 3.0474833808167143) internal successors, (6418), 2106 states have internal predecessors, (6418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:48,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2107 states to 2107 states and 6418 transitions. [2022-02-10 02:51:48,890 INFO L78 Accepts]: Start accepts. Automaton has 2107 states and 6418 transitions. Word has length 24 [2022-02-10 02:51:48,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:48,890 INFO L470 AbstractCegarLoop]: Abstraction has 2107 states and 6418 transitions. [2022-02-10 02:51:48,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2107 states and 6418 transitions. [2022-02-10 02:51:48,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:48,893 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:48,893 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:48,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (225)] Ended with exit code 0 [2022-02-10 02:51:49,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228,225 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:49,093 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:49,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:49,094 INFO L85 PathProgramCache]: Analyzing trace with hash 991212555, now seen corresponding path program 224 times [2022-02-10 02:51:49,094 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:49,094 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233799665] [2022-02-10 02:51:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:49,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:49,153 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:49,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233799665] [2022-02-10 02:51:49,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233799665] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:49,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371918854] [2022-02-10 02:51:49,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:51:49,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:49,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:49,154 INFO L229 MonitoredProcess]: Starting monitored process 226 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:49,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (226)] Waiting until timeout for monitored process [2022-02-10 02:51:49,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:51:49,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:49,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:49,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:49,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:49,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371918854] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:49,343 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:49,343 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 22 [2022-02-10 02:51:49,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170582363] [2022-02-10 02:51:49,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:49,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:51:49,343 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:49,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:51:49,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:51:49,343 INFO L87 Difference]: Start difference. First operand 2107 states and 6418 transitions. Second operand has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:50,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:50,017 INFO L93 Difference]: Finished difference Result 3187 states and 8889 transitions. [2022-02-10 02:51:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-10 02:51:50,017 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:50,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:50,022 INFO L225 Difference]: With dead ends: 3187 [2022-02-10 02:51:50,022 INFO L226 Difference]: Without dead ends: 3176 [2022-02-10 02:51:50,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1569, Invalid=2853, Unknown=0, NotChecked=0, Total=4422 [2022-02-10 02:51:50,023 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 199 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:50,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 177 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:50,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2022-02-10 02:51:50,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 2379. [2022-02-10 02:51:50,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2379 states, 2378 states have (on average 3.0849453322119427) internal successors, (7336), 2378 states have internal predecessors, (7336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:50,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 7336 transitions. [2022-02-10 02:51:50,057 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 7336 transitions. Word has length 24 [2022-02-10 02:51:50,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:50,057 INFO L470 AbstractCegarLoop]: Abstraction has 2379 states and 7336 transitions. [2022-02-10 02:51:50,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:50,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 7336 transitions. [2022-02-10 02:51:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:50,060 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:50,060 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:50,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (226)] Ended with exit code 0 [2022-02-10 02:51:50,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,226 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:50,261 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:50,261 INFO L85 PathProgramCache]: Analyzing trace with hash -225638867, now seen corresponding path program 225 times [2022-02-10 02:51:50,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:50,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8815836] [2022-02-10 02:51:50,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:50,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:50,320 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:50,320 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:50,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8815836] [2022-02-10 02:51:50,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8815836] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:50,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491046907] [2022-02-10 02:51:50,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:51:50,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:50,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:50,322 INFO L229 MonitoredProcess]: Starting monitored process 227 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:50,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (227)] Waiting until timeout for monitored process [2022-02-10 02:51:50,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:51:50,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:50,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:50,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:50,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:50,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491046907] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:50,508 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:50,508 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 22 [2022-02-10 02:51:50,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557192653] [2022-02-10 02:51:50,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:50,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:51:50,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:50,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:51:50,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:51:50,508 INFO L87 Difference]: Start difference. First operand 2379 states and 7336 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:51,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:51,359 INFO L93 Difference]: Finished difference Result 2829 states and 8020 transitions. [2022-02-10 02:51:51,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-10 02:51:51,359 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:51,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:51,363 INFO L225 Difference]: With dead ends: 2829 [2022-02-10 02:51:51,363 INFO L226 Difference]: Without dead ends: 2825 [2022-02-10 02:51:51,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1974 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2346, Invalid=5136, Unknown=0, NotChecked=0, Total=7482 [2022-02-10 02:51:51,364 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 220 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:51,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 133 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:51,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2022-02-10 02:51:51,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2018. [2022-02-10 02:51:51,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 2017 states have (on average 3.028755577590481) internal successors, (6109), 2017 states have internal predecessors, (6109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:51,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 6109 transitions. [2022-02-10 02:51:51,393 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 6109 transitions. Word has length 24 [2022-02-10 02:51:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:51,393 INFO L470 AbstractCegarLoop]: Abstraction has 2018 states and 6109 transitions. [2022-02-10 02:51:51,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:51,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 6109 transitions. [2022-02-10 02:51:51,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:51,395 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:51,395 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:51,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (227)] Ended with exit code 0 [2022-02-10 02:51:51,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,227 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:51,596 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:51,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:51,596 INFO L85 PathProgramCache]: Analyzing trace with hash 312216711, now seen corresponding path program 226 times [2022-02-10 02:51:51,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:51,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101920649] [2022-02-10 02:51:51,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:51,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:51,661 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:51,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101920649] [2022-02-10 02:51:51,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101920649] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:51,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053530950] [2022-02-10 02:51:51,661 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:51:51,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:51,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:51,662 INFO L229 MonitoredProcess]: Starting monitored process 228 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:51,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (228)] Waiting until timeout for monitored process [2022-02-10 02:51:51,688 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:51:51,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:51,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:51,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:51,810 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:51,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:51,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053530950] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:51,856 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:51,856 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 23 [2022-02-10 02:51:51,856 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088263965] [2022-02-10 02:51:51,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:51,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:51:51,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:51,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:51:51,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:51:51,857 INFO L87 Difference]: Start difference. First operand 2018 states and 6109 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:52,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:52,829 INFO L93 Difference]: Finished difference Result 2475 states and 6848 transitions. [2022-02-10 02:51:52,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-10 02:51:52,830 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:52,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:52,833 INFO L225 Difference]: With dead ends: 2475 [2022-02-10 02:51:52,833 INFO L226 Difference]: Without dead ends: 2471 [2022-02-10 02:51:52,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2118 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2339, Invalid=5317, Unknown=0, NotChecked=0, Total=7656 [2022-02-10 02:51:52,833 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 213 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:52,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 180 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:52,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2022-02-10 02:51:52,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2005. [2022-02-10 02:51:52,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 2004 states have (on average 3.0254491017964074) internal successors, (6063), 2004 states have internal predecessors, (6063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 6063 transitions. [2022-02-10 02:51:52,860 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 6063 transitions. Word has length 24 [2022-02-10 02:51:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:52,860 INFO L470 AbstractCegarLoop]: Abstraction has 2005 states and 6063 transitions. [2022-02-10 02:51:52,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 6063 transitions. [2022-02-10 02:51:52,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:52,863 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:52,863 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:52,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (228)] Ended with exit code 0 [2022-02-10 02:51:53,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,228 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:53,063 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:53,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:53,063 INFO L85 PathProgramCache]: Analyzing trace with hash -194129555, now seen corresponding path program 227 times [2022-02-10 02:51:53,063 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:53,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089095983] [2022-02-10 02:51:53,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:53,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:53,135 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:53,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089095983] [2022-02-10 02:51:53,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089095983] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:53,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767986884] [2022-02-10 02:51:53,135 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:51:53,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:53,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:53,136 INFO L229 MonitoredProcess]: Starting monitored process 229 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:53,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (229)] Waiting until timeout for monitored process [2022-02-10 02:51:53,163 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:51:53,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:53,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:53,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:53,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:53,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767986884] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:53,329 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:53,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 24 [2022-02-10 02:51:53,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459181766] [2022-02-10 02:51:53,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:53,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:51:53,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:53,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:51:53,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:51:53,330 INFO L87 Difference]: Start difference. First operand 2005 states and 6063 transitions. Second operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:54,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:54,122 INFO L93 Difference]: Finished difference Result 2396 states and 6677 transitions. [2022-02-10 02:51:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-10 02:51:54,122 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:54,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:54,125 INFO L225 Difference]: With dead ends: 2396 [2022-02-10 02:51:54,125 INFO L226 Difference]: Without dead ends: 2390 [2022-02-10 02:51:54,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2321 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2455, Invalid=5555, Unknown=0, NotChecked=0, Total=8010 [2022-02-10 02:51:54,126 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 143 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:54,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 148 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:54,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2022-02-10 02:51:54,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 2005. [2022-02-10 02:51:54,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 2004 states have (on average 3.023453093812375) internal successors, (6059), 2004 states have internal predecessors, (6059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:54,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 6059 transitions. [2022-02-10 02:51:54,166 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 6059 transitions. Word has length 24 [2022-02-10 02:51:54,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:54,167 INFO L470 AbstractCegarLoop]: Abstraction has 2005 states and 6059 transitions. [2022-02-10 02:51:54,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 6059 transitions. [2022-02-10 02:51:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:54,169 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:54,169 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:54,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (229)] Ended with exit code 0 [2022-02-10 02:51:54,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232,229 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:54,370 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:54,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:54,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1187356367, now seen corresponding path program 228 times [2022-02-10 02:51:54,370 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:54,370 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154420475] [2022-02-10 02:51:54,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:54,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:54,425 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:54,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154420475] [2022-02-10 02:51:54,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154420475] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:54,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921613493] [2022-02-10 02:51:54,425 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:51:54,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:54,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:54,426 INFO L229 MonitoredProcess]: Starting monitored process 230 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:54,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (230)] Waiting until timeout for monitored process [2022-02-10 02:51:54,453 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:51:54,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:54,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:54,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:54,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:54,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921613493] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:54,626 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:54,626 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 12] total 22 [2022-02-10 02:51:54,627 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743095113] [2022-02-10 02:51:54,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:54,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:51:54,627 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:54,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:51:54,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:51:54,627 INFO L87 Difference]: Start difference. First operand 2005 states and 6059 transitions. Second operand has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:55,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:55,238 INFO L93 Difference]: Finished difference Result 3278 states and 9103 transitions. [2022-02-10 02:51:55,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-10 02:51:55,238 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:55,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:55,243 INFO L225 Difference]: With dead ends: 3278 [2022-02-10 02:51:55,243 INFO L226 Difference]: Without dead ends: 3268 [2022-02-10 02:51:55,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1433, Invalid=2599, Unknown=0, NotChecked=0, Total=4032 [2022-02-10 02:51:55,243 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 218 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:55,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 155 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:55,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2022-02-10 02:51:55,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 2313. [2022-02-10 02:51:55,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2312 states have (on average 3.0666089965397925) internal successors, (7090), 2312 states have internal predecessors, (7090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:55,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 7090 transitions. [2022-02-10 02:51:55,278 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 7090 transitions. Word has length 24 [2022-02-10 02:51:55,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:55,278 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 7090 transitions. [2022-02-10 02:51:55,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:55,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 7090 transitions. [2022-02-10 02:51:55,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:55,282 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:55,282 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:55,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (230)] Ended with exit code 0 [2022-02-10 02:51:55,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233,230 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:55,483 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:55,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:55,483 INFO L85 PathProgramCache]: Analyzing trace with hash -29495055, now seen corresponding path program 229 times [2022-02-10 02:51:55,484 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:55,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855644518] [2022-02-10 02:51:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:55,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:55,538 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:55,539 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:55,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855644518] [2022-02-10 02:51:55,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855644518] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:55,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032851597] [2022-02-10 02:51:55,539 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:51:55,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:55,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:55,540 INFO L229 MonitoredProcess]: Starting monitored process 231 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:55,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (231)] Waiting until timeout for monitored process [2022-02-10 02:51:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:55,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:55,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:55,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:55,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032851597] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:55,738 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:55,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 12] total 22 [2022-02-10 02:51:55,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775907573] [2022-02-10 02:51:55,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:55,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:51:55,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:55,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:51:55,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:51:55,739 INFO L87 Difference]: Start difference. First operand 2313 states and 7090 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:56,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:56,652 INFO L93 Difference]: Finished difference Result 2847 states and 7989 transitions. [2022-02-10 02:51:56,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-10 02:51:56,652 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:56,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:56,657 INFO L225 Difference]: With dead ends: 2847 [2022-02-10 02:51:56,657 INFO L226 Difference]: Without dead ends: 2844 [2022-02-10 02:51:56,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2255 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2425, Invalid=5585, Unknown=0, NotChecked=0, Total=8010 [2022-02-10 02:51:56,658 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 218 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:56,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 132 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:56,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2022-02-10 02:51:56,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2156. [2022-02-10 02:51:56,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2155 states have (on average 3.0357308584686775) internal successors, (6542), 2155 states have internal predecessors, (6542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:56,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 6542 transitions. [2022-02-10 02:51:56,693 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 6542 transitions. Word has length 24 [2022-02-10 02:51:56,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:56,693 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 6542 transitions. [2022-02-10 02:51:56,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:56,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 6542 transitions. [2022-02-10 02:51:56,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:56,695 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:56,695 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:56,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (231)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:56,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2022-02-10 02:51:56,897 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:56,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:56,897 INFO L85 PathProgramCache]: Analyzing trace with hash 508360523, now seen corresponding path program 230 times [2022-02-10 02:51:56,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:56,897 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813359689] [2022-02-10 02:51:56,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:56,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:56,959 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:56,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:56,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813359689] [2022-02-10 02:51:56,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813359689] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:56,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345431410] [2022-02-10 02:51:56,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:51:56,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:56,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:56,961 INFO L229 MonitoredProcess]: Starting monitored process 232 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:56,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (232)] Waiting until timeout for monitored process [2022-02-10 02:51:56,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:51:56,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:56,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:56,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:57,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:57,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345431410] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:57,156 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:57,156 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 23 [2022-02-10 02:51:57,156 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063303626] [2022-02-10 02:51:57,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:57,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:51:57,157 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:57,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:51:57,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:51:57,157 INFO L87 Difference]: Start difference. First operand 2156 states and 6542 transitions. Second operand has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:58,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:58,062 INFO L93 Difference]: Finished difference Result 2815 states and 7863 transitions. [2022-02-10 02:51:58,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-10 02:51:58,063 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:58,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:58,067 INFO L225 Difference]: With dead ends: 2815 [2022-02-10 02:51:58,067 INFO L226 Difference]: Without dead ends: 2810 [2022-02-10 02:51:58,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2243 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2291, Invalid=5541, Unknown=0, NotChecked=0, Total=7832 [2022-02-10 02:51:58,068 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 218 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:58,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 147 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:58,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2022-02-10 02:51:58,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 2146. [2022-02-10 02:51:58,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2146 states, 2145 states have (on average 3.046153846153846) internal successors, (6534), 2145 states have internal predecessors, (6534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:58,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2146 states to 2146 states and 6534 transitions. [2022-02-10 02:51:58,102 INFO L78 Accepts]: Start accepts. Automaton has 2146 states and 6534 transitions. Word has length 24 [2022-02-10 02:51:58,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:58,102 INFO L470 AbstractCegarLoop]: Abstraction has 2146 states and 6534 transitions. [2022-02-10 02:51:58,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:58,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2146 states and 6534 transitions. [2022-02-10 02:51:58,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:58,105 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:58,105 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:58,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (232)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:58,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 232 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2022-02-10 02:51:58,306 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:58,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:58,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2014257, now seen corresponding path program 231 times [2022-02-10 02:51:58,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:58,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834350036] [2022-02-10 02:51:58,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:58,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:58,372 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:58,372 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:58,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834350036] [2022-02-10 02:51:58,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834350036] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:58,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878539232] [2022-02-10 02:51:58,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:51:58,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:58,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:58,374 INFO L229 MonitoredProcess]: Starting monitored process 233 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:58,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (233)] Waiting until timeout for monitored process [2022-02-10 02:51:58,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:51:58,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:58,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:58,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:58,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:58,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878539232] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:58,577 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:58,578 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 24 [2022-02-10 02:51:58,578 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841588482] [2022-02-10 02:51:58,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:58,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:51:58,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:58,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:51:58,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:51:58,578 INFO L87 Difference]: Start difference. First operand 2146 states and 6534 transitions. Second operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:59,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:59,451 INFO L93 Difference]: Finished difference Result 2711 states and 7556 transitions. [2022-02-10 02:51:59,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-10 02:51:59,452 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:51:59,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:59,455 INFO L225 Difference]: With dead ends: 2711 [2022-02-10 02:51:59,455 INFO L226 Difference]: Without dead ends: 2705 [2022-02-10 02:51:59,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2316 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2242, Invalid=5590, Unknown=0, NotChecked=0, Total=7832 [2022-02-10 02:51:59,456 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 186 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:59,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 138 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:59,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2022-02-10 02:51:59,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2136. [2022-02-10 02:51:59,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2136 states, 2135 states have (on average 3.0440281030444964) internal successors, (6499), 2135 states have internal predecessors, (6499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:59,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 6499 transitions. [2022-02-10 02:51:59,487 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 6499 transitions. Word has length 24 [2022-02-10 02:51:59,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:59,487 INFO L470 AbstractCegarLoop]: Abstraction has 2136 states and 6499 transitions. [2022-02-10 02:51:59,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:59,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 6499 transitions. [2022-02-10 02:51:59,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:51:59,489 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:59,489 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:59,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (233)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:59,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable236 [2022-02-10 02:51:59,690 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:59,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:59,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1485149195, now seen corresponding path program 232 times [2022-02-10 02:51:59,690 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:59,690 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066916086] [2022-02-10 02:51:59,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:59,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:59,762 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:59,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066916086] [2022-02-10 02:51:59,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066916086] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:59,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052061996] [2022-02-10 02:51:59,762 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:51:59,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:59,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:59,767 INFO L229 MonitoredProcess]: Starting monitored process 234 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:59,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (234)] Waiting until timeout for monitored process [2022-02-10 02:51:59,794 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:51:59,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:59,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:51:59,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:59,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:59,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052061996] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:59,970 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:59,970 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 25 [2022-02-10 02:51:59,970 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903380637] [2022-02-10 02:51:59,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:59,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:51:59,971 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:59,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:51:59,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:51:59,971 INFO L87 Difference]: Start difference. First operand 2136 states and 6499 transitions. Second operand has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:00,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:00,767 INFO L93 Difference]: Finished difference Result 2631 states and 7384 transitions. [2022-02-10 02:52:00,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-10 02:52:00,767 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:52:00,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:00,771 INFO L225 Difference]: With dead ends: 2631 [2022-02-10 02:52:00,771 INFO L226 Difference]: Without dead ends: 2623 [2022-02-10 02:52:00,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2417 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2313, Invalid=5697, Unknown=0, NotChecked=0, Total=8010 [2022-02-10 02:52:00,772 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 176 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:00,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 103 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:52:00,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2623 states. [2022-02-10 02:52:00,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2623 to 2136. [2022-02-10 02:52:00,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2136 states, 2135 states have (on average 3.042622950819672) internal successors, (6496), 2135 states have internal predecessors, (6496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:00,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 6496 transitions. [2022-02-10 02:52:00,801 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 6496 transitions. Word has length 24 [2022-02-10 02:52:00,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:00,801 INFO L470 AbstractCegarLoop]: Abstraction has 2136 states and 6496 transitions. [2022-02-10 02:52:00,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:00,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 6496 transitions. [2022-02-10 02:52:00,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:52:00,804 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:00,804 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:00,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (234)] Ended with exit code 0 [2022-02-10 02:52:01,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237,234 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:01,004 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:01,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:01,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1322120053, now seen corresponding path program 233 times [2022-02-10 02:52:01,005 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:01,005 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997734020] [2022-02-10 02:52:01,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:01,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:01,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:01,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997734020] [2022-02-10 02:52:01,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997734020] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:01,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345418555] [2022-02-10 02:52:01,056 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:52:01,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:01,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:01,057 INFO L229 MonitoredProcess]: Starting monitored process 235 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:01,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (235)] Waiting until timeout for monitored process [2022-02-10 02:52:01,085 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:52:01,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:01,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:52:01,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:01,220 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:01,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:01,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345418555] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:01,258 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:01,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 11] total 22 [2022-02-10 02:52:01,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946411126] [2022-02-10 02:52:01,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:01,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:52:01,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:01,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:52:01,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:52:01,259 INFO L87 Difference]: Start difference. First operand 2136 states and 6496 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:01,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:01,847 INFO L93 Difference]: Finished difference Result 3691 states and 10410 transitions. [2022-02-10 02:52:01,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 02:52:01,848 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:52:01,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:01,853 INFO L225 Difference]: With dead ends: 3691 [2022-02-10 02:52:01,853 INFO L226 Difference]: Without dead ends: 3682 [2022-02-10 02:52:01,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1300, Invalid=2360, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 02:52:01,854 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 221 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:01,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 147 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:52:01,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3682 states. [2022-02-10 02:52:01,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3682 to 2723. [2022-02-10 02:52:01,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2723 states, 2722 states have (on average 3.100661278471712) internal successors, (8440), 2722 states have internal predecessors, (8440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:01,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 8440 transitions. [2022-02-10 02:52:01,911 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 8440 transitions. Word has length 24 [2022-02-10 02:52:01,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:01,911 INFO L470 AbstractCegarLoop]: Abstraction has 2723 states and 8440 transitions. [2022-02-10 02:52:01,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:01,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 8440 transitions. [2022-02-10 02:52:01,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:52:01,914 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:01,914 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:01,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (235)] Ended with exit code 0 [2022-02-10 02:52:02,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 235 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable238 [2022-02-10 02:52:02,115 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:02,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:02,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1755995821, now seen corresponding path program 234 times [2022-02-10 02:52:02,115 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:02,115 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326570468] [2022-02-10 02:52:02,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:02,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:02,166 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:02,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326570468] [2022-02-10 02:52:02,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326570468] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:02,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550039652] [2022-02-10 02:52:02,166 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:52:02,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:02,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:02,167 INFO L229 MonitoredProcess]: Starting monitored process 236 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:02,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (236)] Waiting until timeout for monitored process [2022-02-10 02:52:02,193 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:52:02,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:02,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:52:02,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:02,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:02,360 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550039652] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:02,360 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:02,360 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 11] total 22 [2022-02-10 02:52:02,360 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126718764] [2022-02-10 02:52:02,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:02,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:52:02,360 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:02,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:52:02,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:52:02,360 INFO L87 Difference]: Start difference. First operand 2723 states and 8440 transitions. Second operand has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:03,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:03,330 INFO L93 Difference]: Finished difference Result 3379 states and 9671 transitions. [2022-02-10 02:52:03,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-10 02:52:03,330 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:52:03,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:03,335 INFO L225 Difference]: With dead ends: 3379 [2022-02-10 02:52:03,335 INFO L226 Difference]: Without dead ends: 3376 [2022-02-10 02:52:03,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2749 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2607, Invalid=6323, Unknown=0, NotChecked=0, Total=8930 [2022-02-10 02:52:03,336 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 218 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:03,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 130 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:52:03,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2022-02-10 02:52:03,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 2571. [2022-02-10 02:52:03,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 2570 states have (on average 3.078988326848249) internal successors, (7913), 2570 states have internal predecessors, (7913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:03,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 7913 transitions. [2022-02-10 02:52:03,392 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 7913 transitions. Word has length 24 [2022-02-10 02:52:03,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:03,392 INFO L470 AbstractCegarLoop]: Abstraction has 2571 states and 7913 transitions. [2022-02-10 02:52:03,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:03,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 7913 transitions. [2022-02-10 02:52:03,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:52:03,395 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:03,395 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:03,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (236)] Ended with exit code 0 [2022-02-10 02:52:03,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 236 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2022-02-10 02:52:03,595 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:03,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:03,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2001115897, now seen corresponding path program 235 times [2022-02-10 02:52:03,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:03,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887251279] [2022-02-10 02:52:03,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:03,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:03,657 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:03,657 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:03,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887251279] [2022-02-10 02:52:03,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887251279] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:03,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760683919] [2022-02-10 02:52:03,657 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:52:03,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:03,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:03,658 INFO L229 MonitoredProcess]: Starting monitored process 237 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:03,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (237)] Waiting until timeout for monitored process [2022-02-10 02:52:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:03,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:52:03,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:03,826 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:03,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:03,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760683919] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:03,863 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:03,863 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 12] total 23 [2022-02-10 02:52:03,864 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148219414] [2022-02-10 02:52:03,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:03,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:52:03,864 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:03,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:52:03,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:52:03,864 INFO L87 Difference]: Start difference. First operand 2571 states and 7913 transitions. Second operand has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:04,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:04,781 INFO L93 Difference]: Finished difference Result 3463 states and 9971 transitions. [2022-02-10 02:52:04,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-10 02:52:04,782 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:52:04,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:04,787 INFO L225 Difference]: With dead ends: 3463 [2022-02-10 02:52:04,788 INFO L226 Difference]: Without dead ends: 3459 [2022-02-10 02:52:04,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2354, Invalid=6018, Unknown=0, NotChecked=0, Total=8372 [2022-02-10 02:52:04,789 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 255 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:04,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 109 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:52:04,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2022-02-10 02:52:04,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 2718. [2022-02-10 02:52:04,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2718 states, 2717 states have (on average 3.0923813029076186) internal successors, (8402), 2717 states have internal predecessors, (8402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:04,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 8402 transitions. [2022-02-10 02:52:04,853 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 8402 transitions. Word has length 24 [2022-02-10 02:52:04,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:04,853 INFO L470 AbstractCegarLoop]: Abstraction has 2718 states and 8402 transitions. [2022-02-10 02:52:04,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:04,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 8402 transitions. [2022-02-10 02:52:04,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:52:04,857 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:04,857 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:04,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (237)] Ended with exit code 0 [2022-02-10 02:52:05,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,237 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:05,058 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:05,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:05,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1787505133, now seen corresponding path program 236 times [2022-02-10 02:52:05,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:05,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461746067] [2022-02-10 02:52:05,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:05,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:05,119 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:05,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461746067] [2022-02-10 02:52:05,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461746067] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:05,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953479075] [2022-02-10 02:52:05,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:52:05,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:05,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:05,120 INFO L229 MonitoredProcess]: Starting monitored process 238 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:05,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (238)] Waiting until timeout for monitored process [2022-02-10 02:52:05,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:52:05,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:05,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:52:05,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:05,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:05,319 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:05,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953479075] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:05,319 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:05,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 24 [2022-02-10 02:52:05,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17180487] [2022-02-10 02:52:05,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:05,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:52:05,319 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:05,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:52:05,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:52:05,320 INFO L87 Difference]: Start difference. First operand 2718 states and 8402 transitions. Second operand has 24 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:06,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:06,198 INFO L93 Difference]: Finished difference Result 3626 states and 10498 transitions. [2022-02-10 02:52:06,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-10 02:52:06,198 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:52:06,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:06,203 INFO L225 Difference]: With dead ends: 3626 [2022-02-10 02:52:06,203 INFO L226 Difference]: Without dead ends: 3620 [2022-02-10 02:52:06,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2455 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2184, Invalid=5826, Unknown=0, NotChecked=0, Total=8010 [2022-02-10 02:52:06,205 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 181 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:06,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 140 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:52:06,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2022-02-10 02:52:06,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 2865. [2022-02-10 02:52:06,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2864 states have (on average 3.1110335195530725) internal successors, (8910), 2864 states have internal predecessors, (8910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:06,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 8910 transitions. [2022-02-10 02:52:06,272 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 8910 transitions. Word has length 24 [2022-02-10 02:52:06,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:06,272 INFO L470 AbstractCegarLoop]: Abstraction has 2865 states and 8910 transitions. [2022-02-10 02:52:06,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:06,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 8910 transitions. [2022-02-10 02:52:06,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:52:06,275 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:06,275 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:06,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (238)] Ended with exit code 0 [2022-02-10 02:52:06,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,238 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:06,476 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:06,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:06,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1024327225, now seen corresponding path program 237 times [2022-02-10 02:52:06,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:06,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912594435] [2022-02-10 02:52:06,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:06,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:06,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:06,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912594435] [2022-02-10 02:52:06,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912594435] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:06,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685749059] [2022-02-10 02:52:06,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:52:06,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:06,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:06,546 INFO L229 MonitoredProcess]: Starting monitored process 239 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:06,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (239)] Waiting until timeout for monitored process [2022-02-10 02:52:06,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:52:06,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:06,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:52:06,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:06,717 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:06,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:06,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685749059] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:06,756 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:06,756 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 25 [2022-02-10 02:52:06,757 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890607926] [2022-02-10 02:52:06,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:06,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:52:06,757 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:06,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:52:06,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:52:06,757 INFO L87 Difference]: Start difference. First operand 2865 states and 8910 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:07,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:07,610 INFO L93 Difference]: Finished difference Result 3575 states and 10349 transitions. [2022-02-10 02:52:07,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-10 02:52:07,611 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:52:07,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:07,616 INFO L225 Difference]: With dead ends: 3575 [2022-02-10 02:52:07,616 INFO L226 Difference]: Without dead ends: 3567 [2022-02-10 02:52:07,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2430 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2096, Invalid=5736, Unknown=0, NotChecked=0, Total=7832 [2022-02-10 02:52:07,617 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 166 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:07,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 141 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:52:07,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3567 states. [2022-02-10 02:52:07,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3567 to 2858. [2022-02-10 02:52:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2858 states, 2857 states have (on average 3.111655582779139) internal successors, (8890), 2857 states have internal predecessors, (8890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:07,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 8890 transitions. [2022-02-10 02:52:07,687 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 8890 transitions. Word has length 24 [2022-02-10 02:52:07,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:07,687 INFO L470 AbstractCegarLoop]: Abstraction has 2858 states and 8890 transitions. [2022-02-10 02:52:07,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:07,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 8890 transitions. [2022-02-10 02:52:07,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:52:07,691 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:07,691 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:07,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (239)] Ended with exit code 0 [2022-02-10 02:52:07,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,239 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:07,891 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:07,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:07,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2003182893, now seen corresponding path program 238 times [2022-02-10 02:52:07,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:07,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20855483] [2022-02-10 02:52:07,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:07,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:07,964 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:07,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20855483] [2022-02-10 02:52:07,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20855483] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:07,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565346330] [2022-02-10 02:52:07,964 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:52:07,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:07,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:07,965 INFO L229 MonitoredProcess]: Starting monitored process 240 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:07,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (240)] Waiting until timeout for monitored process [2022-02-10 02:52:07,991 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:52:07,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:07,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:52:07,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:08,138 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:08,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:08,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565346330] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:08,183 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:08,183 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 26 [2022-02-10 02:52:08,183 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344916625] [2022-02-10 02:52:08,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:08,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:52:08,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:08,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:52:08,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:52:08,184 INFO L87 Difference]: Start difference. First operand 2858 states and 8890 transitions. Second operand has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:08,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:08,912 INFO L93 Difference]: Finished difference Result 3489 states and 10169 transitions. [2022-02-10 02:52:08,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-10 02:52:08,913 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:52:08,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:08,917 INFO L225 Difference]: With dead ends: 3489 [2022-02-10 02:52:08,917 INFO L226 Difference]: Without dead ends: 3479 [2022-02-10 02:52:08,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2432 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2129, Invalid=5703, Unknown=0, NotChecked=0, Total=7832 [2022-02-10 02:52:08,919 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 163 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:08,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 78 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:52:08,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2022-02-10 02:52:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 2863. [2022-02-10 02:52:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2862 states have (on average 3.1076170510132775) internal successors, (8894), 2862 states have internal predecessors, (8894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 8894 transitions. [2022-02-10 02:52:08,958 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 8894 transitions. Word has length 24 [2022-02-10 02:52:08,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:08,958 INFO L470 AbstractCegarLoop]: Abstraction has 2863 states and 8894 transitions. [2022-02-10 02:52:08,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:08,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 8894 transitions. [2022-02-10 02:52:08,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:52:08,962 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:08,962 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:08,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (240)] Ended with exit code 0 [2022-02-10 02:52:09,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243,240 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:09,162 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:09,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:09,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1806477745, now seen corresponding path program 239 times [2022-02-10 02:52:09,162 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:09,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092150023] [2022-02-10 02:52:09,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:09,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:09,209 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:09,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:09,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092150023] [2022-02-10 02:52:09,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092150023] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:09,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114703434] [2022-02-10 02:52:09,210 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:52:09,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:09,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:09,211 INFO L229 MonitoredProcess]: Starting monitored process 241 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:09,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (241)] Waiting until timeout for monitored process [2022-02-10 02:52:09,251 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:52:09,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:09,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:52:09,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:09,397 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:09,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:09,436 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:09,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114703434] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:09,436 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:09,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 10] total 22 [2022-02-10 02:52:09,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405429756] [2022-02-10 02:52:09,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:09,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:52:09,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:09,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:52:09,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:52:09,437 INFO L87 Difference]: Start difference. First operand 2863 states and 8894 transitions. Second operand has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:10,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:10,062 INFO L93 Difference]: Finished difference Result 5367 states and 15904 transitions. [2022-02-10 02:52:10,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-10 02:52:10,062 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:52:10,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:10,071 INFO L225 Difference]: With dead ends: 5367 [2022-02-10 02:52:10,071 INFO L226 Difference]: Without dead ends: 5361 [2022-02-10 02:52:10,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1230, Invalid=2310, Unknown=0, NotChecked=0, Total=3540 [2022-02-10 02:52:10,072 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 208 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:10,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 250 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:52:10,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5361 states. [2022-02-10 02:52:10,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5361 to 4078. [2022-02-10 02:52:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4078 states, 4077 states have (on average 3.1947510424331615) internal successors, (13025), 4077 states have internal predecessors, (13025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4078 states to 4078 states and 13025 transitions. [2022-02-10 02:52:10,143 INFO L78 Accepts]: Start accepts. Automaton has 4078 states and 13025 transitions. Word has length 24 [2022-02-10 02:52:10,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:10,143 INFO L470 AbstractCegarLoop]: Abstraction has 4078 states and 13025 transitions. [2022-02-10 02:52:10,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:10,143 INFO L276 IsEmpty]: Start isEmpty. Operand 4078 states and 13025 transitions. [2022-02-10 02:52:10,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:52:10,148 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:10,148 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:10,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (241)] Ended with exit code 0 [2022-02-10 02:52:10,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 241 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable244 [2022-02-10 02:52:10,349 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:10,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:10,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1271638129, now seen corresponding path program 240 times [2022-02-10 02:52:10,349 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:10,349 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317089689] [2022-02-10 02:52:10,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:10,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:10,396 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:10,396 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317089689] [2022-02-10 02:52:10,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317089689] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:10,396 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920887573] [2022-02-10 02:52:10,396 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:52:10,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:10,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:10,397 INFO L229 MonitoredProcess]: Starting monitored process 242 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:10,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (242)] Waiting until timeout for monitored process [2022-02-10 02:52:10,424 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:52:10,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:10,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:52:10,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:10,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:10,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920887573] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:10,596 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:10,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 10] total 22 [2022-02-10 02:52:10,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183251217] [2022-02-10 02:52:10,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:10,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:52:10,597 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:10,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:52:10,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:52:10,597 INFO L87 Difference]: Start difference. First operand 4078 states and 13025 transitions. Second operand has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:11,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:11,701 INFO L93 Difference]: Finished difference Result 4851 states and 14545 transitions. [2022-02-10 02:52:11,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-10 02:52:11,701 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:52:11,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:11,708 INFO L225 Difference]: With dead ends: 4851 [2022-02-10 02:52:11,709 INFO L226 Difference]: Without dead ends: 4849 [2022-02-10 02:52:11,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3841 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2847, Invalid=7455, Unknown=0, NotChecked=0, Total=10302 [2022-02-10 02:52:11,710 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 207 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:11,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 136 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:52:11,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4849 states. [2022-02-10 02:52:11,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4849 to 3931. [2022-02-10 02:52:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3931 states, 3930 states have (on average 3.1806615776081424) internal successors, (12500), 3930 states have internal predecessors, (12500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3931 states to 3931 states and 12500 transitions. [2022-02-10 02:52:11,773 INFO L78 Accepts]: Start accepts. Automaton has 3931 states and 12500 transitions. Word has length 24 [2022-02-10 02:52:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:11,773 INFO L470 AbstractCegarLoop]: Abstraction has 3931 states and 12500 transitions. [2022-02-10 02:52:11,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3931 states and 12500 transitions. [2022-02-10 02:52:11,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:52:11,777 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:11,777 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:11,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (242)] Ended with exit code 0 [2022-02-10 02:52:11,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 242 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2022-02-10 02:52:11,978 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:11,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:11,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1809493707, now seen corresponding path program 241 times [2022-02-10 02:52:11,979 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:11,979 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538885257] [2022-02-10 02:52:11,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:11,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:12,030 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:12,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538885257] [2022-02-10 02:52:12,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538885257] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:12,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562925523] [2022-02-10 02:52:12,030 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:52:12,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:12,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:12,031 INFO L229 MonitoredProcess]: Starting monitored process 243 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:12,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (243)] Waiting until timeout for monitored process [2022-02-10 02:52:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:12,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:52:12,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:12,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:12,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562925523] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:12,231 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:12,231 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 11] total 23 [2022-02-10 02:52:12,231 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747953217] [2022-02-10 02:52:12,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:12,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:52:12,232 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:12,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:52:12,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:52:12,232 INFO L87 Difference]: Start difference. First operand 3931 states and 12500 transitions. Second operand has 23 states, 23 states have (on average 1.608695652173913) internal successors, (37), 23 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:13,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:13,266 INFO L93 Difference]: Finished difference Result 5022 states and 15220 transitions. [2022-02-10 02:52:13,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-10 02:52:13,266 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.608695652173913) internal successors, (37), 23 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:52:13,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:13,273 INFO L225 Difference]: With dead ends: 5022 [2022-02-10 02:52:13,273 INFO L226 Difference]: Without dead ends: 5018 [2022-02-10 02:52:13,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3352 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2499, Invalid=6813, Unknown=0, NotChecked=0, Total=9312 [2022-02-10 02:52:13,274 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 200 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:13,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 166 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:52:13,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5018 states. [2022-02-10 02:52:13,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5018 to 4112. [2022-02-10 02:52:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4112 states, 4111 states have (on average 3.1950863536852347) internal successors, (13135), 4111 states have internal predecessors, (13135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:13,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4112 states to 4112 states and 13135 transitions. [2022-02-10 02:52:13,336 INFO L78 Accepts]: Start accepts. Automaton has 4112 states and 13135 transitions. Word has length 24 [2022-02-10 02:52:13,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:13,336 INFO L470 AbstractCegarLoop]: Abstraction has 4112 states and 13135 transitions. [2022-02-10 02:52:13,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.608695652173913) internal successors, (37), 23 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:13,337 INFO L276 IsEmpty]: Start isEmpty. Operand 4112 states and 13135 transitions. [2022-02-10 02:52:13,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:52:13,342 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:13,342 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:13,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (243)] Ended with exit code 0 [2022-02-10 02:52:13,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2022-02-10 02:52:13,542 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:13,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:13,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1303147441, now seen corresponding path program 242 times [2022-02-10 02:52:13,543 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:13,543 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442151070] [2022-02-10 02:52:13,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:13,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:13,600 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:13,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442151070] [2022-02-10 02:52:13,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442151070] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:13,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138787797] [2022-02-10 02:52:13,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:52:13,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:13,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:13,601 INFO L229 MonitoredProcess]: Starting monitored process 244 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:13,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (244)] Waiting until timeout for monitored process [2022-02-10 02:52:13,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:52:13,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:13,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:52:13,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:13,770 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:13,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:13,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138787797] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:13,808 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:13,809 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 12] total 24 [2022-02-10 02:52:13,809 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40762132] [2022-02-10 02:52:13,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:13,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:52:13,809 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:13,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:52:13,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:52:13,809 INFO L87 Difference]: Start difference. First operand 4112 states and 13135 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:14,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:14,777 INFO L93 Difference]: Finished difference Result 5303 states and 16198 transitions. [2022-02-10 02:52:14,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-10 02:52:14,777 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:52:14,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:14,785 INFO L225 Difference]: With dead ends: 5303 [2022-02-10 02:52:14,785 INFO L226 Difference]: Without dead ends: 5297 [2022-02-10 02:52:14,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2974 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2222, Invalid=6334, Unknown=0, NotChecked=0, Total=8556 [2022-02-10 02:52:14,786 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 203 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:14,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 133 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:52:14,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5297 states. [2022-02-10 02:52:14,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5297 to 4549. [2022-02-10 02:52:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4549 states, 4548 states have (on average 3.215259454705365) internal successors, (14623), 4548 states have internal predecessors, (14623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:14,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4549 states to 4549 states and 14623 transitions. [2022-02-10 02:52:14,854 INFO L78 Accepts]: Start accepts. Automaton has 4549 states and 14623 transitions. Word has length 24 [2022-02-10 02:52:14,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:14,854 INFO L470 AbstractCegarLoop]: Abstraction has 4549 states and 14623 transitions. [2022-02-10 02:52:14,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:14,855 INFO L276 IsEmpty]: Start isEmpty. Operand 4549 states and 14623 transitions. [2022-02-10 02:52:14,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:52:14,861 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:14,861 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:14,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (244)] Ended with exit code 0 [2022-02-10 02:52:15,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247,244 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:15,062 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:15,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:15,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1508684917, now seen corresponding path program 243 times [2022-02-10 02:52:15,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:15,063 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879605369] [2022-02-10 02:52:15,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:15,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:15,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:15,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879605369] [2022-02-10 02:52:15,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879605369] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:15,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895170199] [2022-02-10 02:52:15,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:52:15,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:15,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:15,126 INFO L229 MonitoredProcess]: Starting monitored process 245 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:15,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (245)] Waiting until timeout for monitored process [2022-02-10 02:52:15,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:52:15,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:15,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:52:15,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:15,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:15,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895170199] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:15,339 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:15,339 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 25 [2022-02-10 02:52:15,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914585986] [2022-02-10 02:52:15,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:15,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:52:15,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:15,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:52:15,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:52:15,340 INFO L87 Difference]: Start difference. First operand 4549 states and 14623 transitions. Second operand has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:16,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:16,243 INFO L93 Difference]: Finished difference Result 5759 states and 17737 transitions. [2022-02-10 02:52:16,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-10 02:52:16,243 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:52:16,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:16,252 INFO L225 Difference]: With dead ends: 5759 [2022-02-10 02:52:16,252 INFO L226 Difference]: Without dead ends: 5751 [2022-02-10 02:52:16,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2699 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2022, Invalid=5988, Unknown=0, NotChecked=0, Total=8010 [2022-02-10 02:52:16,254 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 241 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:16,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 122 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:52:16,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5751 states. [2022-02-10 02:52:16,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5751 to 4981. [2022-02-10 02:52:16,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4981 states, 4980 states have (on average 3.2333333333333334) internal successors, (16102), 4980 states have internal predecessors, (16102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:16,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4981 states to 4981 states and 16102 transitions. [2022-02-10 02:52:16,333 INFO L78 Accepts]: Start accepts. Automaton has 4981 states and 16102 transitions. Word has length 24 [2022-02-10 02:52:16,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:16,333 INFO L470 AbstractCegarLoop]: Abstraction has 4981 states and 16102 transitions. [2022-02-10 02:52:16,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:16,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4981 states and 16102 transitions. [2022-02-10 02:52:16,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:52:16,340 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:16,340 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:16,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (245)] Ended with exit code 0 [2022-02-10 02:52:16,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable248 [2022-02-10 02:52:16,541 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:16,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:16,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1518825201, now seen corresponding path program 244 times [2022-02-10 02:52:16,541 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:16,541 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504782509] [2022-02-10 02:52:16,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:16,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:16,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:16,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504782509] [2022-02-10 02:52:16,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504782509] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:16,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804571431] [2022-02-10 02:52:16,611 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:52:16,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:16,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:16,612 INFO L229 MonitoredProcess]: Starting monitored process 246 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:16,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (246)] Waiting until timeout for monitored process [2022-02-10 02:52:16,638 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:52:16,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:16,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:52:16,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:16,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:16,834 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:16,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804571431] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:16,834 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:16,834 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 26 [2022-02-10 02:52:16,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224635189] [2022-02-10 02:52:16,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:16,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:52:16,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:16,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:52:16,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:52:16,835 INFO L87 Difference]: Start difference. First operand 4981 states and 16102 transitions. Second operand has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:17,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:17,715 INFO L93 Difference]: Finished difference Result 5801 states and 17879 transitions. [2022-02-10 02:52:17,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-10 02:52:17,715 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:52:17,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:17,724 INFO L225 Difference]: With dead ends: 5801 [2022-02-10 02:52:17,725 INFO L226 Difference]: Without dead ends: 5791 [2022-02-10 02:52:17,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2535 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1904, Invalid=5752, Unknown=0, NotChecked=0, Total=7656 [2022-02-10 02:52:17,726 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 184 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:17,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 141 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:52:17,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5791 states. [2022-02-10 02:52:17,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5791 to 5019. [2022-02-10 02:52:17,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5019 states, 5018 states have (on average 3.23595057791949) internal successors, (16238), 5018 states have internal predecessors, (16238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:17,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5019 states to 5019 states and 16238 transitions. [2022-02-10 02:52:17,805 INFO L78 Accepts]: Start accepts. Automaton has 5019 states and 16238 transitions. Word has length 24 [2022-02-10 02:52:17,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:17,805 INFO L470 AbstractCegarLoop]: Abstraction has 5019 states and 16238 transitions. [2022-02-10 02:52:17,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:17,805 INFO L276 IsEmpty]: Start isEmpty. Operand 5019 states and 16238 transitions. [2022-02-10 02:52:17,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:52:17,812 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:17,812 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:17,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (246)] Ended with exit code 0 [2022-02-10 02:52:18,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 246 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2022-02-10 02:52:18,013 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:18,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:18,013 INFO L85 PathProgramCache]: Analyzing trace with hash 882358347, now seen corresponding path program 245 times [2022-02-10 02:52:18,013 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:18,013 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124292322] [2022-02-10 02:52:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:18,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:18,089 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:18,089 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:18,089 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124292322] [2022-02-10 02:52:18,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124292322] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:18,089 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532006317] [2022-02-10 02:52:18,089 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:52:18,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:18,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:18,090 INFO L229 MonitoredProcess]: Starting monitored process 247 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:18,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (247)] Waiting until timeout for monitored process [2022-02-10 02:52:18,118 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:52:18,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:18,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:52:18,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:18,309 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:18,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:18,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532006317] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:18,349 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:18,349 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 27 [2022-02-10 02:52:18,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62983425] [2022-02-10 02:52:18,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:18,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:52:18,351 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:18,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:52:18,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:52:18,352 INFO L87 Difference]: Start difference. First operand 5019 states and 16238 transitions. Second operand has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:19,114 INFO L93 Difference]: Finished difference Result 5738 states and 17800 transitions. [2022-02-10 02:52:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-10 02:52:19,114 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:52:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:19,123 INFO L225 Difference]: With dead ends: 5738 [2022-02-10 02:52:19,123 INFO L226 Difference]: Without dead ends: 5726 [2022-02-10 02:52:19,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2447 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1912, Invalid=5570, Unknown=0, NotChecked=0, Total=7482 [2022-02-10 02:52:19,125 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 140 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:19,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 109 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:52:19,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5726 states. [2022-02-10 02:52:19,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5726 to 5011. [2022-02-10 02:52:19,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5011 states, 5010 states have (on average 3.2385229540918163) internal successors, (16225), 5010 states have internal predecessors, (16225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5011 states to 5011 states and 16225 transitions. [2022-02-10 02:52:19,203 INFO L78 Accepts]: Start accepts. Automaton has 5011 states and 16225 transitions. Word has length 24 [2022-02-10 02:52:19,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:19,203 INFO L470 AbstractCegarLoop]: Abstraction has 5011 states and 16225 transitions. [2022-02-10 02:52:19,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand 5011 states and 16225 transitions. [2022-02-10 02:52:19,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:19,210 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:19,210 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:19,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (247)] Ended with exit code 0 [2022-02-10 02:52:19,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,247 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:19,410 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:19,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:19,410 INFO L85 PathProgramCache]: Analyzing trace with hash 590697451, now seen corresponding path program 246 times [2022-02-10 02:52:19,410 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:19,411 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244573463] [2022-02-10 02:52:19,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:19,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:19,648 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:19,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244573463] [2022-02-10 02:52:19,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244573463] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:19,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420635548] [2022-02-10 02:52:19,648 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:52:19,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:19,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:19,649 INFO L229 MonitoredProcess]: Starting monitored process 248 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:19,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (248)] Waiting until timeout for monitored process [2022-02-10 02:52:19,677 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:52:19,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:19,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:19,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:19,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:20,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420635548] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:20,306 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:20,307 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 29 [2022-02-10 02:52:20,307 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534043889] [2022-02-10 02:52:20,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:20,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:52:20,307 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:20,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:52:20,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:52:20,307 INFO L87 Difference]: Start difference. First operand 5011 states and 16225 transitions. Second operand has 30 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:20,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:20,986 INFO L93 Difference]: Finished difference Result 5247 states and 16497 transitions. [2022-02-10 02:52:20,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 02:52:20,987 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:20,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:20,996 INFO L225 Difference]: With dead ends: 5247 [2022-02-10 02:52:20,997 INFO L226 Difference]: Without dead ends: 5229 [2022-02-10 02:52:20,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=1353, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:52:20,997 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 168 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:20,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 543 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:52:21,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5229 states. [2022-02-10 02:52:21,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5229 to 5039. [2022-02-10 02:52:21,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5039 states, 5038 states have (on average 3.2248908296943233) internal successors, (16247), 5038 states have internal predecessors, (16247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:21,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5039 states to 5039 states and 16247 transitions. [2022-02-10 02:52:21,088 INFO L78 Accepts]: Start accepts. Automaton has 5039 states and 16247 transitions. Word has length 25 [2022-02-10 02:52:21,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:21,088 INFO L470 AbstractCegarLoop]: Abstraction has 5039 states and 16247 transitions. [2022-02-10 02:52:21,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:21,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5039 states and 16247 transitions. [2022-02-10 02:52:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:21,095 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:21,095 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:21,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (248)] Ended with exit code 0 [2022-02-10 02:52:21,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251,248 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:21,295 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:21,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:21,296 INFO L85 PathProgramCache]: Analyzing trace with hash 223242863, now seen corresponding path program 247 times [2022-02-10 02:52:21,296 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:21,296 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489566415] [2022-02-10 02:52:21,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:21,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:21,482 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:21,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489566415] [2022-02-10 02:52:21,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489566415] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:21,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666283270] [2022-02-10 02:52:21,482 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:52:21,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:21,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:21,484 INFO L229 MonitoredProcess]: Starting monitored process 249 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:21,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (249)] Waiting until timeout for monitored process [2022-02-10 02:52:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:21,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:21,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:21,755 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:21,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:22,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666283270] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:22,214 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:22,214 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-02-10 02:52:22,214 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063904685] [2022-02-10 02:52:22,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:22,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:52:22,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:22,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:52:22,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:52:22,215 INFO L87 Difference]: Start difference. First operand 5039 states and 16247 transitions. Second operand has 36 states, 36 states have (on average 1.5) internal successors, (54), 35 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:22,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:22,802 INFO L93 Difference]: Finished difference Result 5332 states and 16752 transitions. [2022-02-10 02:52:22,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:52:22,802 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5) internal successors, (54), 35 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:22,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:22,812 INFO L225 Difference]: With dead ends: 5332 [2022-02-10 02:52:22,812 INFO L226 Difference]: Without dead ends: 5328 [2022-02-10 02:52:22,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:52:22,812 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 214 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:22,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 907 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:52:22,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2022-02-10 02:52:22,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 5123. [2022-02-10 02:52:22,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 3.228816868410777) internal successors, (16538), 5122 states have internal predecessors, (16538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:22,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 16538 transitions. [2022-02-10 02:52:22,890 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 16538 transitions. Word has length 25 [2022-02-10 02:52:22,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:22,890 INFO L470 AbstractCegarLoop]: Abstraction has 5123 states and 16538 transitions. [2022-02-10 02:52:22,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5) internal successors, (54), 35 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:22,890 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 16538 transitions. [2022-02-10 02:52:22,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:22,896 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:22,896 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:22,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (249)] Ended with exit code 0 [2022-02-10 02:52:23,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252,249 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:23,097 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:23,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:23,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1067251243, now seen corresponding path program 248 times [2022-02-10 02:52:23,097 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:23,098 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500530460] [2022-02-10 02:52:23,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:23,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:23,314 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:23,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500530460] [2022-02-10 02:52:23,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500530460] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:23,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777920630] [2022-02-10 02:52:23,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:52:23,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:23,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:23,315 INFO L229 MonitoredProcess]: Starting monitored process 250 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:23,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (250)] Waiting until timeout for monitored process [2022-02-10 02:52:23,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:52:23,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:23,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:23,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:23,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:24,051 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:24,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777920630] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:24,051 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:24,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-02-10 02:52:24,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472040725] [2022-02-10 02:52:24,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:24,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:52:24,052 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:24,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:52:24,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:52:24,052 INFO L87 Difference]: Start difference. First operand 5123 states and 16538 transitions. Second operand has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:24,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:24,661 INFO L93 Difference]: Finished difference Result 5323 states and 16743 transitions. [2022-02-10 02:52:24,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:52:24,662 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:24,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:24,671 INFO L225 Difference]: With dead ends: 5323 [2022-02-10 02:52:24,671 INFO L226 Difference]: Without dead ends: 5312 [2022-02-10 02:52:24,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=1422, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:52:24,672 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 196 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:24,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 935 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:52:24,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5312 states. [2022-02-10 02:52:24,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5312 to 5059. [2022-02-10 02:52:24,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5059 states, 5058 states have (on average 3.2226176354290232) internal successors, (16300), 5058 states have internal predecessors, (16300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:24,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5059 states to 5059 states and 16300 transitions. [2022-02-10 02:52:24,755 INFO L78 Accepts]: Start accepts. Automaton has 5059 states and 16300 transitions. Word has length 25 [2022-02-10 02:52:24,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:24,755 INFO L470 AbstractCegarLoop]: Abstraction has 5059 states and 16300 transitions. [2022-02-10 02:52:24,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:24,755 INFO L276 IsEmpty]: Start isEmpty. Operand 5059 states and 16300 transitions. [2022-02-10 02:52:24,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:24,762 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:24,762 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:24,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (250)] Ended with exit code 0 [2022-02-10 02:52:24,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,250 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:24,963 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:24,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:24,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1771222293, now seen corresponding path program 249 times [2022-02-10 02:52:24,963 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:24,963 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279650925] [2022-02-10 02:52:24,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:24,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:25,173 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:25,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279650925] [2022-02-10 02:52:25,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279650925] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:25,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040260288] [2022-02-10 02:52:25,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:52:25,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:25,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:25,174 INFO L229 MonitoredProcess]: Starting monitored process 251 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:25,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (251)] Waiting until timeout for monitored process [2022-02-10 02:52:25,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:52:25,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:25,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:25,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:25,482 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:25,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:25,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040260288] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:25,946 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:25,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-10 02:52:25,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314461810] [2022-02-10 02:52:25,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:25,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:52:25,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:25,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:52:25,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:52:25,947 INFO L87 Difference]: Start difference. First operand 5059 states and 16300 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:26,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:26,528 INFO L93 Difference]: Finished difference Result 5261 states and 16508 transitions. [2022-02-10 02:52:26,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:52:26,528 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:26,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:26,538 INFO L225 Difference]: With dead ends: 5261 [2022-02-10 02:52:26,538 INFO L226 Difference]: Without dead ends: 5257 [2022-02-10 02:52:26,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=1358, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:52:26,538 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 178 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:26,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 819 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:52:26,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5257 states. [2022-02-10 02:52:26,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5257 to 5059. [2022-02-10 02:52:26,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5059 states, 5058 states have (on average 3.2226176354290232) internal successors, (16300), 5058 states have internal predecessors, (16300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:26,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5059 states to 5059 states and 16300 transitions. [2022-02-10 02:52:26,635 INFO L78 Accepts]: Start accepts. Automaton has 5059 states and 16300 transitions. Word has length 25 [2022-02-10 02:52:26,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:26,635 INFO L470 AbstractCegarLoop]: Abstraction has 5059 states and 16300 transitions. [2022-02-10 02:52:26,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:26,635 INFO L276 IsEmpty]: Start isEmpty. Operand 5059 states and 16300 transitions. [2022-02-10 02:52:26,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:26,643 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:26,643 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:26,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (251)] Ended with exit code 0 [2022-02-10 02:52:26,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 251 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254 [2022-02-10 02:52:26,844 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:26,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:26,845 INFO L85 PathProgramCache]: Analyzing trace with hash 824867311, now seen corresponding path program 250 times [2022-02-10 02:52:26,845 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:26,845 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048041263] [2022-02-10 02:52:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:26,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:27,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:27,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048041263] [2022-02-10 02:52:27,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048041263] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:27,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424292685] [2022-02-10 02:52:27,036 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:52:27,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:27,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:27,038 INFO L229 MonitoredProcess]: Starting monitored process 252 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:27,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (252)] Waiting until timeout for monitored process [2022-02-10 02:52:27,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:52:27,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:27,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:27,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:27,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:27,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424292685] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:27,780 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:27,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-02-10 02:52:27,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425194934] [2022-02-10 02:52:27,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:27,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:52:27,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:27,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:52:27,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:52:27,781 INFO L87 Difference]: Start difference. First operand 5059 states and 16300 transitions. Second operand has 34 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 33 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:28,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:28,420 INFO L93 Difference]: Finished difference Result 5267 states and 16514 transitions. [2022-02-10 02:52:28,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:52:28,421 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 33 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:28,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:28,458 INFO L225 Difference]: With dead ends: 5267 [2022-02-10 02:52:28,458 INFO L226 Difference]: Without dead ends: 5263 [2022-02-10 02:52:28,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=1357, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:52:28,458 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 208 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:28,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 800 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:52:28,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5263 states. [2022-02-10 02:52:28,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5263 to 5059. [2022-02-10 02:52:28,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5059 states, 5058 states have (on average 3.2226176354290232) internal successors, (16300), 5058 states have internal predecessors, (16300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5059 states to 5059 states and 16300 transitions. [2022-02-10 02:52:28,536 INFO L78 Accepts]: Start accepts. Automaton has 5059 states and 16300 transitions. Word has length 25 [2022-02-10 02:52:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:28,536 INFO L470 AbstractCegarLoop]: Abstraction has 5059 states and 16300 transitions. [2022-02-10 02:52:28,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 33 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5059 states and 16300 transitions. [2022-02-10 02:52:28,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:28,544 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:28,544 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:28,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (252)] Ended with exit code 0 [2022-02-10 02:52:28,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2022-02-10 02:52:28,747 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:28,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:28,748 INFO L85 PathProgramCache]: Analyzing trace with hash -300733589, now seen corresponding path program 251 times [2022-02-10 02:52:28,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:28,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713256145] [2022-02-10 02:52:28,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:28,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:28,946 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:28,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713256145] [2022-02-10 02:52:28,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713256145] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:28,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283846101] [2022-02-10 02:52:28,946 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:52:28,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:28,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:28,947 INFO L229 MonitoredProcess]: Starting monitored process 253 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:28,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (253)] Waiting until timeout for monitored process [2022-02-10 02:52:28,974 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:52:28,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:28,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:28,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:29,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:29,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283846101] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:29,641 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:29,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-02-10 02:52:29,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696967259] [2022-02-10 02:52:29,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:29,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 02:52:29,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:29,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 02:52:29,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:52:29,642 INFO L87 Difference]: Start difference. First operand 5059 states and 16300 transitions. Second operand has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:30,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:30,303 INFO L93 Difference]: Finished difference Result 5273 states and 16520 transitions. [2022-02-10 02:52:30,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:52:30,304 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:30,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:30,314 INFO L225 Difference]: With dead ends: 5273 [2022-02-10 02:52:30,314 INFO L226 Difference]: Without dead ends: 5269 [2022-02-10 02:52:30,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:52:30,314 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 175 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:30,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 706 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:52:30,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5269 states. [2022-02-10 02:52:30,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5269 to 5059. [2022-02-10 02:52:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5059 states, 5058 states have (on average 3.2226176354290232) internal successors, (16300), 5058 states have internal predecessors, (16300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:30,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5059 states to 5059 states and 16300 transitions. [2022-02-10 02:52:30,389 INFO L78 Accepts]: Start accepts. Automaton has 5059 states and 16300 transitions. Word has length 25 [2022-02-10 02:52:30,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:30,390 INFO L470 AbstractCegarLoop]: Abstraction has 5059 states and 16300 transitions. [2022-02-10 02:52:30,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:30,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5059 states and 16300 transitions. [2022-02-10 02:52:30,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:30,397 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:30,397 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:30,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (253)] Ended with exit code 0 [2022-02-10 02:52:30,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256,253 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:30,597 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:30,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:30,598 INFO L85 PathProgramCache]: Analyzing trace with hash -834623121, now seen corresponding path program 252 times [2022-02-10 02:52:30,598 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:30,598 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21733420] [2022-02-10 02:52:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:30,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:30,808 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:30,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21733420] [2022-02-10 02:52:30,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21733420] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:30,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077390348] [2022-02-10 02:52:30,808 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:52:30,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:30,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:30,809 INFO L229 MonitoredProcess]: Starting monitored process 254 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:30,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (254)] Waiting until timeout for monitored process [2022-02-10 02:52:30,842 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:52:30,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:30,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:30,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:31,115 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:31,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:31,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077390348] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:31,527 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:31,527 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-02-10 02:52:31,527 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646438073] [2022-02-10 02:52:31,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:31,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:52:31,527 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:31,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:52:31,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:52:31,528 INFO L87 Difference]: Start difference. First operand 5059 states and 16300 transitions. Second operand has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:32,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:32,268 INFO L93 Difference]: Finished difference Result 5269 states and 16513 transitions. [2022-02-10 02:52:32,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 02:52:32,268 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:32,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:32,278 INFO L225 Difference]: With dead ends: 5269 [2022-02-10 02:52:32,278 INFO L226 Difference]: Without dead ends: 5265 [2022-02-10 02:52:32,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1355, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:52:32,278 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 194 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:32,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 691 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:52:32,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5265 states. [2022-02-10 02:52:32,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5265 to 5059. [2022-02-10 02:52:32,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5059 states, 5058 states have (on average 3.2226176354290232) internal successors, (16300), 5058 states have internal predecessors, (16300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:32,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5059 states to 5059 states and 16300 transitions. [2022-02-10 02:52:32,353 INFO L78 Accepts]: Start accepts. Automaton has 5059 states and 16300 transitions. Word has length 25 [2022-02-10 02:52:32,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:32,353 INFO L470 AbstractCegarLoop]: Abstraction has 5059 states and 16300 transitions. [2022-02-10 02:52:32,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:32,353 INFO L276 IsEmpty]: Start isEmpty. Operand 5059 states and 16300 transitions. [2022-02-10 02:52:32,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:32,359 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:32,359 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:32,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (254)] Ended with exit code 0 [2022-02-10 02:52:32,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 254 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable257 [2022-02-10 02:52:32,560 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:32,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:32,560 INFO L85 PathProgramCache]: Analyzing trace with hash -205329429, now seen corresponding path program 253 times [2022-02-10 02:52:32,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:32,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451875961] [2022-02-10 02:52:32,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:32,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:32,768 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:32,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451875961] [2022-02-10 02:52:32,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451875961] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:32,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980680306] [2022-02-10 02:52:32,768 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:52:32,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:32,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:32,769 INFO L229 MonitoredProcess]: Starting monitored process 255 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:32,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (255)] Waiting until timeout for monitored process [2022-02-10 02:52:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:32,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:32,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:33,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:33,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980680306] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:33,449 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:33,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 30 [2022-02-10 02:52:33,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405900897] [2022-02-10 02:52:33,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:33,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 02:52:33,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:33,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 02:52:33,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:52:33,450 INFO L87 Difference]: Start difference. First operand 5059 states and 16300 transitions. Second operand has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:34,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:34,202 INFO L93 Difference]: Finished difference Result 5215 states and 16458 transitions. [2022-02-10 02:52:34,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:52:34,203 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:34,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:34,212 INFO L225 Difference]: With dead ends: 5215 [2022-02-10 02:52:34,212 INFO L226 Difference]: Without dead ends: 5211 [2022-02-10 02:52:34,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=1354, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:52:34,213 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 132 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:34,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 645 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1523 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:52:34,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5211 states. [2022-02-10 02:52:34,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5211 to 5060. [2022-02-10 02:52:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5060 states, 5059 states have (on average 3.22217829610595) internal successors, (16301), 5059 states have internal predecessors, (16301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:34,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5060 states to 5060 states and 16301 transitions. [2022-02-10 02:52:34,284 INFO L78 Accepts]: Start accepts. Automaton has 5060 states and 16301 transitions. Word has length 25 [2022-02-10 02:52:34,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:34,284 INFO L470 AbstractCegarLoop]: Abstraction has 5060 states and 16301 transitions. [2022-02-10 02:52:34,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:34,285 INFO L276 IsEmpty]: Start isEmpty. Operand 5060 states and 16301 transitions. [2022-02-10 02:52:34,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:34,291 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:34,291 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:34,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (255)] Forceful destruction successful, exit code 0 [2022-02-10 02:52:34,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 255 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable258 [2022-02-10 02:52:34,491 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:34,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:34,492 INFO L85 PathProgramCache]: Analyzing trace with hash 857161387, now seen corresponding path program 254 times [2022-02-10 02:52:34,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:34,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640525160] [2022-02-10 02:52:34,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:34,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:34,673 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:34,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640525160] [2022-02-10 02:52:34,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640525160] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:34,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223896937] [2022-02-10 02:52:34,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:52:34,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:34,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:34,675 INFO L229 MonitoredProcess]: Starting monitored process 256 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:34,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (256)] Waiting until timeout for monitored process [2022-02-10 02:52:34,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:52:34,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:34,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:34,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:35,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:35,495 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:35,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223896937] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:35,495 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:35,495 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 16] total 36 [2022-02-10 02:52:35,495 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727006908] [2022-02-10 02:52:35,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:35,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:52:35,495 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:35,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:52:35,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:52:35,496 INFO L87 Difference]: Start difference. First operand 5060 states and 16301 transitions. Second operand has 37 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 36 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:35,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:35,936 INFO L93 Difference]: Finished difference Result 5284 states and 16742 transitions. [2022-02-10 02:52:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:52:35,936 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 36 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:35,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:35,946 INFO L225 Difference]: With dead ends: 5284 [2022-02-10 02:52:35,947 INFO L226 Difference]: Without dead ends: 5280 [2022-02-10 02:52:35,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=1357, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:52:35,947 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 139 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:35,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 683 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:52:35,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5280 states. [2022-02-10 02:52:36,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5280 to 5114. [2022-02-10 02:52:36,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5114 states, 5113 states have (on average 3.2258947780168197) internal successors, (16494), 5113 states have internal predecessors, (16494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:36,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5114 states to 5114 states and 16494 transitions. [2022-02-10 02:52:36,025 INFO L78 Accepts]: Start accepts. Automaton has 5114 states and 16494 transitions. Word has length 25 [2022-02-10 02:52:36,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:36,025 INFO L470 AbstractCegarLoop]: Abstraction has 5114 states and 16494 transitions. [2022-02-10 02:52:36,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 36 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:36,025 INFO L276 IsEmpty]: Start isEmpty. Operand 5114 states and 16494 transitions. [2022-02-10 02:52:36,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:36,031 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:36,032 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:36,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (256)] Forceful destruction successful, exit code 0 [2022-02-10 02:52:36,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 256 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable259 [2022-02-10 02:52:36,232 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:36,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:36,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1701169767, now seen corresponding path program 255 times [2022-02-10 02:52:36,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:36,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777781111] [2022-02-10 02:52:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:36,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:36,409 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:36,409 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:36,409 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777781111] [2022-02-10 02:52:36,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777781111] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:36,409 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491212837] [2022-02-10 02:52:36,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:52:36,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:36,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:36,410 INFO L229 MonitoredProcess]: Starting monitored process 257 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:36,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (257)] Waiting until timeout for monitored process [2022-02-10 02:52:36,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:52:36,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:36,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:36,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:36,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:37,211 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:37,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491212837] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:37,211 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:37,211 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 16] total 35 [2022-02-10 02:52:37,211 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588887691] [2022-02-10 02:52:37,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:37,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:52:37,212 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:37,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:52:37,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:52:37,212 INFO L87 Difference]: Start difference. First operand 5114 states and 16494 transitions. Second operand has 36 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 35 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:37,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:37,645 INFO L93 Difference]: Finished difference Result 5284 states and 16742 transitions. [2022-02-10 02:52:37,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:52:37,646 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 35 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:37,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:37,655 INFO L225 Difference]: With dead ends: 5284 [2022-02-10 02:52:37,655 INFO L226 Difference]: Without dead ends: 5279 [2022-02-10 02:52:37,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=1288, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:52:37,655 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 128 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:37,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 692 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:52:37,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5279 states. [2022-02-10 02:52:37,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5279 to 5114. [2022-02-10 02:52:37,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5114 states, 5113 states have (on average 3.2258947780168197) internal successors, (16494), 5113 states have internal predecessors, (16494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:37,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5114 states to 5114 states and 16494 transitions. [2022-02-10 02:52:37,727 INFO L78 Accepts]: Start accepts. Automaton has 5114 states and 16494 transitions. Word has length 25 [2022-02-10 02:52:37,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:37,728 INFO L470 AbstractCegarLoop]: Abstraction has 5114 states and 16494 transitions. [2022-02-10 02:52:37,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 35 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:37,728 INFO L276 IsEmpty]: Start isEmpty. Operand 5114 states and 16494 transitions. [2022-02-10 02:52:37,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:37,735 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:37,735 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:37,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (257)] Ended with exit code 0 [2022-02-10 02:52:37,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260,257 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:37,937 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:37,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:37,937 INFO L85 PathProgramCache]: Analyzing trace with hash -359690035, now seen corresponding path program 256 times [2022-02-10 02:52:37,937 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:37,937 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733938821] [2022-02-10 02:52:37,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:37,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:38,122 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:38,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:38,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733938821] [2022-02-10 02:52:38,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733938821] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:38,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859368900] [2022-02-10 02:52:38,123 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:52:38,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:38,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:38,124 INFO L229 MonitoredProcess]: Starting monitored process 258 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:38,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (258)] Waiting until timeout for monitored process [2022-02-10 02:52:38,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:52:38,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:38,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:38,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:38,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:38,890 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859368900] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:38,890 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:38,890 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 16] total 34 [2022-02-10 02:52:38,890 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584900453] [2022-02-10 02:52:38,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:38,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:52:38,890 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:38,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:52:38,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:52:38,890 INFO L87 Difference]: Start difference. First operand 5114 states and 16494 transitions. Second operand has 35 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 34 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:39,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:39,383 INFO L93 Difference]: Finished difference Result 5243 states and 16650 transitions. [2022-02-10 02:52:39,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:52:39,383 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 34 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:39,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:39,392 INFO L225 Difference]: With dead ends: 5243 [2022-02-10 02:52:39,392 INFO L226 Difference]: Without dead ends: 5238 [2022-02-10 02:52:39,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:52:39,392 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 118 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:39,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 729 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:52:39,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5238 states. [2022-02-10 02:52:39,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5238 to 5114. [2022-02-10 02:52:39,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5114 states, 5113 states have (on average 3.2258947780168197) internal successors, (16494), 5113 states have internal predecessors, (16494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:39,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5114 states to 5114 states and 16494 transitions. [2022-02-10 02:52:39,461 INFO L78 Accepts]: Start accepts. Automaton has 5114 states and 16494 transitions. Word has length 25 [2022-02-10 02:52:39,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:39,461 INFO L470 AbstractCegarLoop]: Abstraction has 5114 states and 16494 transitions. [2022-02-10 02:52:39,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 34 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:39,461 INFO L276 IsEmpty]: Start isEmpty. Operand 5114 states and 16494 transitions. [2022-02-10 02:52:39,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:39,468 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:39,468 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:39,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (258)] Ended with exit code 0 [2022-02-10 02:52:39,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261,258 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:39,678 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:39,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:39,678 INFO L85 PathProgramCache]: Analyzing trace with hash -966200849, now seen corresponding path program 257 times [2022-02-10 02:52:39,678 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:39,678 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621316145] [2022-02-10 02:52:39,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:39,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:39,857 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:39,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621316145] [2022-02-10 02:52:39,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621316145] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:39,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466212057] [2022-02-10 02:52:39,857 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:52:39,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:39,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:39,859 INFO L229 MonitoredProcess]: Starting monitored process 259 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:39,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (259)] Waiting until timeout for monitored process [2022-02-10 02:52:39,886 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:52:39,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:39,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:39,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:40,178 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:40,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:40,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466212057] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:40,636 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:40,636 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 16] total 36 [2022-02-10 02:52:40,636 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361891557] [2022-02-10 02:52:40,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:40,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:52:40,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:40,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:52:40,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:52:40,637 INFO L87 Difference]: Start difference. First operand 5114 states and 16494 transitions. Second operand has 37 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 36 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:41,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:41,199 INFO L93 Difference]: Finished difference Result 5638 states and 17821 transitions. [2022-02-10 02:52:41,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:52:41,199 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 36 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:41,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:41,209 INFO L225 Difference]: With dead ends: 5638 [2022-02-10 02:52:41,209 INFO L226 Difference]: Without dead ends: 5628 [2022-02-10 02:52:41,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 21 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=151, Invalid=1489, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:52:41,210 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 176 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:41,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 740 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:52:41,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2022-02-10 02:52:41,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 5334. [2022-02-10 02:52:41,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5334 states, 5333 states have (on average 3.2394524657791113) internal successors, (17276), 5333 states have internal predecessors, (17276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:41,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5334 states to 5334 states and 17276 transitions. [2022-02-10 02:52:41,318 INFO L78 Accepts]: Start accepts. Automaton has 5334 states and 17276 transitions. Word has length 25 [2022-02-10 02:52:41,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:41,318 INFO L470 AbstractCegarLoop]: Abstraction has 5334 states and 17276 transitions. [2022-02-10 02:52:41,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 36 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:41,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5334 states and 17276 transitions. [2022-02-10 02:52:41,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:41,326 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:41,326 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:41,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (259)] Ended with exit code 0 [2022-02-10 02:52:41,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 259 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable262 [2022-02-10 02:52:41,526 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:41,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:41,526 INFO L85 PathProgramCache]: Analyzing trace with hash -122192469, now seen corresponding path program 258 times [2022-02-10 02:52:41,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:41,527 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781399964] [2022-02-10 02:52:41,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:41,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:41,711 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:41,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781399964] [2022-02-10 02:52:41,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781399964] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:41,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035215345] [2022-02-10 02:52:41,711 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:52:41,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:41,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:41,712 INFO L229 MonitoredProcess]: Starting monitored process 260 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:41,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (260)] Waiting until timeout for monitored process [2022-02-10 02:52:41,739 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:52:41,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:41,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:41,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:42,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:42,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035215345] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:42,475 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:42,475 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 16] total 35 [2022-02-10 02:52:42,475 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622733196] [2022-02-10 02:52:42,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:42,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:52:42,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:42,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:52:42,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:52:42,476 INFO L87 Difference]: Start difference. First operand 5334 states and 17276 transitions. Second operand has 36 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 35 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:43,102 INFO L93 Difference]: Finished difference Result 5635 states and 17796 transitions. [2022-02-10 02:52:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:52:43,102 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 35 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:43,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:43,112 INFO L225 Difference]: With dead ends: 5635 [2022-02-10 02:52:43,112 INFO L226 Difference]: Without dead ends: 5623 [2022-02-10 02:52:43,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 22 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=142, Invalid=1418, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:52:43,113 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 148 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:43,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 1057 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:52:43,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5623 states. [2022-02-10 02:52:43,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5623 to 5304. [2022-02-10 02:52:43,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5304 states, 5303 states have (on average 3.2300584574769) internal successors, (17129), 5303 states have internal predecessors, (17129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:43,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 17129 transitions. [2022-02-10 02:52:43,228 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 17129 transitions. Word has length 25 [2022-02-10 02:52:43,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:43,228 INFO L470 AbstractCegarLoop]: Abstraction has 5304 states and 17129 transitions. [2022-02-10 02:52:43,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 35 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:43,229 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 17129 transitions. [2022-02-10 02:52:43,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:43,235 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:43,235 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:43,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (260)] Ended with exit code 0 [2022-02-10 02:52:43,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263,260 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:43,435 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:43,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:43,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2111915025, now seen corresponding path program 259 times [2022-02-10 02:52:43,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:43,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571442846] [2022-02-10 02:52:43,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:43,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:43,671 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:43,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571442846] [2022-02-10 02:52:43,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571442846] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:43,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794249013] [2022-02-10 02:52:43,671 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:52:43,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:43,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:43,673 INFO L229 MonitoredProcess]: Starting monitored process 261 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:43,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (261)] Waiting until timeout for monitored process [2022-02-10 02:52:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:43,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:43,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:43,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:44,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794249013] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:44,444 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:44,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 16] total 34 [2022-02-10 02:52:44,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323874056] [2022-02-10 02:52:44,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:44,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:52:44,445 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:44,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:52:44,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:52:44,445 INFO L87 Difference]: Start difference. First operand 5304 states and 17129 transitions. Second operand has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 34 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:45,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:45,089 INFO L93 Difference]: Finished difference Result 5550 states and 17516 transitions. [2022-02-10 02:52:45,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:52:45,089 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 34 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:45,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:45,100 INFO L225 Difference]: With dead ends: 5550 [2022-02-10 02:52:45,101 INFO L226 Difference]: Without dead ends: 5538 [2022-02-10 02:52:45,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=137, Invalid=1423, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:52:45,101 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 153 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:45,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 886 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:52:45,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5538 states. [2022-02-10 02:52:45,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5538 to 5296. [2022-02-10 02:52:45,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 5295 states have (on average 3.2275731822474034) internal successors, (17090), 5295 states have internal predecessors, (17090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 17090 transitions. [2022-02-10 02:52:45,186 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 17090 transitions. Word has length 25 [2022-02-10 02:52:45,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:45,186 INFO L470 AbstractCegarLoop]: Abstraction has 5296 states and 17090 transitions. [2022-02-10 02:52:45,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 34 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:45,186 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 17090 transitions. [2022-02-10 02:52:45,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:45,194 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:45,194 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:45,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (261)] Ended with exit code 0 [2022-02-10 02:52:45,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,261 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:45,394 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:45,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:45,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1645196693, now seen corresponding path program 260 times [2022-02-10 02:52:45,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:45,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654406260] [2022-02-10 02:52:45,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:45,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:45,582 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:45,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654406260] [2022-02-10 02:52:45,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654406260] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:45,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212924239] [2022-02-10 02:52:45,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:52:45,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:45,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:45,583 INFO L229 MonitoredProcess]: Starting monitored process 262 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:45,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (262)] Waiting until timeout for monitored process [2022-02-10 02:52:45,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:52:45,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:45,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:45,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:45,921 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:45,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:46,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212924239] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:46,342 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:46,343 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 16] total 33 [2022-02-10 02:52:46,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060209606] [2022-02-10 02:52:46,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:46,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:52:46,343 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:46,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:52:46,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:52:46,343 INFO L87 Difference]: Start difference. First operand 5296 states and 17090 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:46,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:46,866 INFO L93 Difference]: Finished difference Result 5485 states and 17342 transitions. [2022-02-10 02:52:46,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:52:46,866 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:46,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:46,876 INFO L225 Difference]: With dead ends: 5485 [2022-02-10 02:52:46,876 INFO L226 Difference]: Without dead ends: 5480 [2022-02-10 02:52:46,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=1288, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:52:46,877 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 144 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:46,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 656 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:52:46,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5480 states. [2022-02-10 02:52:46,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5480 to 5297. [2022-02-10 02:52:46,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 5296 states have (on average 3.2271525679758306) internal successors, (17091), 5296 states have internal predecessors, (17091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:46,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 17091 transitions. [2022-02-10 02:52:46,962 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 17091 transitions. Word has length 25 [2022-02-10 02:52:46,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:46,962 INFO L470 AbstractCegarLoop]: Abstraction has 5297 states and 17091 transitions. [2022-02-10 02:52:46,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:46,962 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 17091 transitions. [2022-02-10 02:52:46,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:46,969 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:46,969 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:46,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (262)] Ended with exit code 0 [2022-02-10 02:52:47,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265,262 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:47,170 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:47,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:47,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1292288875, now seen corresponding path program 261 times [2022-02-10 02:52:47,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:47,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659966002] [2022-02-10 02:52:47,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:47,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:47,357 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:47,357 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659966002] [2022-02-10 02:52:47,357 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659966002] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:47,357 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740083182] [2022-02-10 02:52:47,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:52:47,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:47,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:47,359 INFO L229 MonitoredProcess]: Starting monitored process 263 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:47,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (263)] Waiting until timeout for monitored process [2022-02-10 02:52:47,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:52:47,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:47,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:47,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:47,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:48,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740083182] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:48,158 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:48,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 16] total 34 [2022-02-10 02:52:48,158 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684506467] [2022-02-10 02:52:48,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:48,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:52:48,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:48,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:52:48,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1088, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:52:48,159 INFO L87 Difference]: Start difference. First operand 5297 states and 17091 transitions. Second operand has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 34 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:48,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:48,556 INFO L93 Difference]: Finished difference Result 5444 states and 17248 transitions. [2022-02-10 02:52:48,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:52:48,556 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 34 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:48,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:48,566 INFO L225 Difference]: With dead ends: 5444 [2022-02-10 02:52:48,566 INFO L226 Difference]: Without dead ends: 5437 [2022-02-10 02:52:48,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=1273, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:52:48,566 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 233 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:48,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 571 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:52:48,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-02-10 02:52:48,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5290. [2022-02-10 02:52:48,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 5289 states have (on average 3.225940631499338) internal successors, (17062), 5289 states have internal predecessors, (17062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:48,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 17062 transitions. [2022-02-10 02:52:48,645 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 17062 transitions. Word has length 25 [2022-02-10 02:52:48,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:48,645 INFO L470 AbstractCegarLoop]: Abstraction has 5290 states and 17062 transitions. [2022-02-10 02:52:48,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 34 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:48,645 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 17062 transitions. [2022-02-10 02:52:48,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:48,652 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:48,652 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:48,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (263)] Forceful destruction successful, exit code 0 [2022-02-10 02:52:48,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 263 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable266 [2022-02-10 02:52:48,853 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:48,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:48,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1655855317, now seen corresponding path program 262 times [2022-02-10 02:52:48,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:48,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5582015] [2022-02-10 02:52:48,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:48,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:49,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:49,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5582015] [2022-02-10 02:52:49,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5582015] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:49,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648522024] [2022-02-10 02:52:49,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:52:49,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:49,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:49,038 INFO L229 MonitoredProcess]: Starting monitored process 264 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:49,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (264)] Waiting until timeout for monitored process [2022-02-10 02:52:49,066 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:52:49,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:49,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:49,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:49,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:49,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648522024] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:49,818 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:49,818 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 36 [2022-02-10 02:52:49,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66513647] [2022-02-10 02:52:49,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:49,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:52:49,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:49,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:52:49,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:52:49,819 INFO L87 Difference]: Start difference. First operand 5290 states and 17062 transitions. Second operand has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 36 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:50,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:50,458 INFO L93 Difference]: Finished difference Result 5761 states and 18274 transitions. [2022-02-10 02:52:50,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:52:50,459 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 36 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:50,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:50,467 INFO L225 Difference]: With dead ends: 5761 [2022-02-10 02:52:50,468 INFO L226 Difference]: Without dead ends: 5751 [2022-02-10 02:52:50,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=151, Invalid=1489, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:52:50,468 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 164 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:50,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 882 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:52:50,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5751 states. [2022-02-10 02:52:50,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5751 to 5508. [2022-02-10 02:52:50,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5508 states, 5507 states have (on average 3.242418739785727) internal successors, (17856), 5507 states have internal predecessors, (17856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:50,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5508 states to 5508 states and 17856 transitions. [2022-02-10 02:52:50,543 INFO L78 Accepts]: Start accepts. Automaton has 5508 states and 17856 transitions. Word has length 25 [2022-02-10 02:52:50,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:50,543 INFO L470 AbstractCegarLoop]: Abstraction has 5508 states and 17856 transitions. [2022-02-10 02:52:50,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 36 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:50,543 INFO L276 IsEmpty]: Start isEmpty. Operand 5508 states and 17856 transitions. [2022-02-10 02:52:50,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:50,550 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:50,550 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:50,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (264)] Ended with exit code 0 [2022-02-10 02:52:50,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 264 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable267 [2022-02-10 02:52:50,751 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:50,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:50,751 INFO L85 PathProgramCache]: Analyzing trace with hash -811846937, now seen corresponding path program 263 times [2022-02-10 02:52:50,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:50,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730994268] [2022-02-10 02:52:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:50,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:50,981 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:50,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730994268] [2022-02-10 02:52:50,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730994268] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:50,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914355053] [2022-02-10 02:52:50,981 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:52:50,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:50,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:50,983 INFO L229 MonitoredProcess]: Starting monitored process 265 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:50,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (265)] Waiting until timeout for monitored process [2022-02-10 02:52:51,016 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:52:51,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:51,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:51,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:51,292 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:51,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:51,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914355053] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:51,766 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:51,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 35 [2022-02-10 02:52:51,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618319701] [2022-02-10 02:52:51,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:51,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:52:51,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:51,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:52:51,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:52:51,767 INFO L87 Difference]: Start difference. First operand 5508 states and 17856 transitions. Second operand has 36 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:52,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:52,307 INFO L93 Difference]: Finished difference Result 5761 states and 18266 transitions. [2022-02-10 02:52:52,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:52:52,307 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:52,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:52,317 INFO L225 Difference]: With dead ends: 5761 [2022-02-10 02:52:52,317 INFO L226 Difference]: Without dead ends: 5749 [2022-02-10 02:52:52,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=142, Invalid=1418, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:52:52,317 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 178 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:52,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 855 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:52:52,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5749 states. [2022-02-10 02:52:52,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5749 to 5471. [2022-02-10 02:52:52,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5471 states, 5470 states have (on average 3.2329067641681903) internal successors, (17684), 5470 states have internal predecessors, (17684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5471 states to 5471 states and 17684 transitions. [2022-02-10 02:52:52,420 INFO L78 Accepts]: Start accepts. Automaton has 5471 states and 17684 transitions. Word has length 25 [2022-02-10 02:52:52,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:52,420 INFO L470 AbstractCegarLoop]: Abstraction has 5471 states and 17684 transitions. [2022-02-10 02:52:52,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:52,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5471 states and 17684 transitions. [2022-02-10 02:52:52,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:52,427 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:52,427 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:52,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (265)] Ended with exit code 0 [2022-02-10 02:52:52,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 265 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable268 [2022-02-10 02:52:52,628 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:52,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:52,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1422260557, now seen corresponding path program 264 times [2022-02-10 02:52:52,628 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:52,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873117261] [2022-02-10 02:52:52,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:52,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:52,809 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:52,809 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:52,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873117261] [2022-02-10 02:52:52,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873117261] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:52,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871946579] [2022-02-10 02:52:52,809 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:52:52,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:52,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:52,810 INFO L229 MonitoredProcess]: Starting monitored process 266 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:52,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (266)] Waiting until timeout for monitored process [2022-02-10 02:52:52,838 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:52:52,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:52,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:52,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:53,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:53,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871946579] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:53,560 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:53,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 34 [2022-02-10 02:52:53,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428809272] [2022-02-10 02:52:53,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:53,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:52:53,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:53,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:52:53,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:52:53,561 INFO L87 Difference]: Start difference. First operand 5471 states and 17684 transitions. Second operand has 35 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 34 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:54,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:54,225 INFO L93 Difference]: Finished difference Result 5709 states and 18037 transitions. [2022-02-10 02:52:54,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:52:54,225 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 34 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:54,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:54,236 INFO L225 Difference]: With dead ends: 5709 [2022-02-10 02:52:54,236 INFO L226 Difference]: Without dead ends: 5696 [2022-02-10 02:52:54,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=137, Invalid=1423, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:52:54,236 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 148 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:54,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 968 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:52:54,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2022-02-10 02:52:54,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5444. [2022-02-10 02:52:54,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5444 states, 5443 states have (on average 3.2270806540510746) internal successors, (17565), 5443 states have internal predecessors, (17565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:54,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 17565 transitions. [2022-02-10 02:52:54,316 INFO L78 Accepts]: Start accepts. Automaton has 5444 states and 17565 transitions. Word has length 25 [2022-02-10 02:52:54,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:54,316 INFO L470 AbstractCegarLoop]: Abstraction has 5444 states and 17565 transitions. [2022-02-10 02:52:54,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 34 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:54,316 INFO L276 IsEmpty]: Start isEmpty. Operand 5444 states and 17565 transitions. [2022-02-10 02:52:54,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:54,323 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:54,323 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:54,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (266)] Ended with exit code 0 [2022-02-10 02:52:54,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 266 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable269 [2022-02-10 02:52:54,524 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:54,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:54,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1960116135, now seen corresponding path program 265 times [2022-02-10 02:52:54,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:54,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853944846] [2022-02-10 02:52:54,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:54,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:54,732 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:54,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:54,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853944846] [2022-02-10 02:52:54,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853944846] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:54,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496549736] [2022-02-10 02:52:54,732 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:52:54,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:54,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:54,733 INFO L229 MonitoredProcess]: Starting monitored process 267 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:54,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (267)] Waiting until timeout for monitored process [2022-02-10 02:52:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:54,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:54,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:55,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:55,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496549736] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:55,479 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:55,479 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 33 [2022-02-10 02:52:55,479 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408341695] [2022-02-10 02:52:55,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:55,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:52:55,479 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:55,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:52:55,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:52:55,480 INFO L87 Difference]: Start difference. First operand 5444 states and 17565 transitions. Second operand has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 33 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:56,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:56,230 INFO L93 Difference]: Finished difference Result 5641 states and 17834 transitions. [2022-02-10 02:52:56,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:52:56,231 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 33 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:56,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:56,241 INFO L225 Difference]: With dead ends: 5641 [2022-02-10 02:52:56,241 INFO L226 Difference]: Without dead ends: 5628 [2022-02-10 02:52:56,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=1422, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:52:56,242 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 162 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:56,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 975 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:52:56,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2022-02-10 02:52:56,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 5426. [2022-02-10 02:52:56,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5426 states, 5425 states have (on average 3.2276497695852533) internal successors, (17510), 5425 states have internal predecessors, (17510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5426 states to 5426 states and 17510 transitions. [2022-02-10 02:52:56,319 INFO L78 Accepts]: Start accepts. Automaton has 5426 states and 17510 transitions. Word has length 25 [2022-02-10 02:52:56,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:56,319 INFO L470 AbstractCegarLoop]: Abstraction has 5426 states and 17510 transitions. [2022-02-10 02:52:56,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 33 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:56,319 INFO L276 IsEmpty]: Start isEmpty. Operand 5426 states and 17510 transitions. [2022-02-10 02:52:56,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:56,326 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:56,326 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:56,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (267)] Ended with exit code 0 [2022-02-10 02:52:56,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270,267 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:56,526 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:56,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:56,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1453769869, now seen corresponding path program 266 times [2022-02-10 02:52:56,527 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:56,527 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893987569] [2022-02-10 02:52:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:56,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:56,768 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:56,768 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:56,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893987569] [2022-02-10 02:52:56,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893987569] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:56,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741600375] [2022-02-10 02:52:56,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:52:56,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:56,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:56,769 INFO L229 MonitoredProcess]: Starting monitored process 268 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:56,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (268)] Waiting until timeout for monitored process [2022-02-10 02:52:56,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:52:56,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:56,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:56,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:57,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:57,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741600375] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:57,532 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:57,532 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 32 [2022-02-10 02:52:57,532 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132216108] [2022-02-10 02:52:57,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:57,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 02:52:57,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:57,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 02:52:57,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:52:57,533 INFO L87 Difference]: Start difference. First operand 5426 states and 17510 transitions. Second operand has 33 states, 33 states have (on average 1.696969696969697) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:58,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:58,091 INFO L93 Difference]: Finished difference Result 5581 states and 17700 transitions. [2022-02-10 02:52:58,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:52:58,091 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.696969696969697) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:58,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:58,101 INFO L225 Difference]: With dead ends: 5581 [2022-02-10 02:52:58,101 INFO L226 Difference]: Without dead ends: 5576 [2022-02-10 02:52:58,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1287, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:52:58,101 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 182 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:58,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 641 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:52:58,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5576 states. [2022-02-10 02:52:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5576 to 5428. [2022-02-10 02:52:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5428 states, 5427 states have (on average 3.22682881886862) internal successors, (17512), 5427 states have internal predecessors, (17512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5428 states to 5428 states and 17512 transitions. [2022-02-10 02:52:58,181 INFO L78 Accepts]: Start accepts. Automaton has 5428 states and 17512 transitions. Word has length 25 [2022-02-10 02:52:58,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:58,181 INFO L470 AbstractCegarLoop]: Abstraction has 5428 states and 17512 transitions. [2022-02-10 02:52:58,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.696969696969697) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:58,181 INFO L276 IsEmpty]: Start isEmpty. Operand 5428 states and 17512 transitions. [2022-02-10 02:52:58,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:58,188 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:58,188 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:58,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (268)] Ended with exit code 0 [2022-02-10 02:52:58,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 268 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable271 [2022-02-10 02:52:58,388 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:58,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:58,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1488432687, now seen corresponding path program 267 times [2022-02-10 02:52:58,389 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:58,389 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045416530] [2022-02-10 02:52:58,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:58,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:58,570 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:58,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045416530] [2022-02-10 02:52:58,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045416530] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:58,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490879641] [2022-02-10 02:52:58,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:52:58,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:58,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:58,571 INFO L229 MonitoredProcess]: Starting monitored process 269 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:58,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (269)] Waiting until timeout for monitored process [2022-02-10 02:52:58,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:52:58,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:58,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:58,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:58,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:59,348 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:59,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490879641] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:59,349 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:59,349 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 16] total 34 [2022-02-10 02:52:59,349 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899384848] [2022-02-10 02:52:59,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:59,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:52:59,349 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:59,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:52:59,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1088, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:52:59,349 INFO L87 Difference]: Start difference. First operand 5428 states and 17512 transitions. Second operand has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 34 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:59,757 INFO L93 Difference]: Finished difference Result 5546 states and 17638 transitions. [2022-02-10 02:52:59,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:52:59,757 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 34 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:52:59,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:59,767 INFO L225 Difference]: With dead ends: 5546 [2022-02-10 02:52:59,767 INFO L226 Difference]: Without dead ends: 5539 [2022-02-10 02:52:59,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=1273, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:52:59,767 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 152 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:59,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 526 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:52:59,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5539 states. [2022-02-10 02:52:59,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5539 to 5422. [2022-02-10 02:52:59,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5422 states, 5421 states have (on average 3.2259730676996865) internal successors, (17488), 5421 states have internal predecessors, (17488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:59,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5422 states to 5422 states and 17488 transitions. [2022-02-10 02:52:59,849 INFO L78 Accepts]: Start accepts. Automaton has 5422 states and 17488 transitions. Word has length 25 [2022-02-10 02:52:59,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:59,849 INFO L470 AbstractCegarLoop]: Abstraction has 5422 states and 17488 transitions. [2022-02-10 02:52:59,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 34 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:59,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5422 states and 17488 transitions. [2022-02-10 02:52:59,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:52:59,857 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:59,857 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:59,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (269)] Forceful destruction successful, exit code 0 [2022-02-10 02:53:00,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,269 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:00,057 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:00,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:00,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1560307345, now seen corresponding path program 268 times [2022-02-10 02:53:00,057 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:00,058 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719781866] [2022-02-10 02:53:00,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:00,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:00,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:00,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719781866] [2022-02-10 02:53:00,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719781866] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:00,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401816060] [2022-02-10 02:53:00,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:53:00,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:00,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:00,256 INFO L229 MonitoredProcess]: Starting monitored process 270 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:00,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (270)] Waiting until timeout for monitored process [2022-02-10 02:53:00,282 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:53:00,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:00,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:00,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:00,554 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:00,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:01,018 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:01,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401816060] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:01,018 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:01,018 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 36 [2022-02-10 02:53:01,018 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048224888] [2022-02-10 02:53:01,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:01,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:53:01,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:01,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:53:01,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:53:01,019 INFO L87 Difference]: Start difference. First operand 5422 states and 17488 transitions. Second operand has 37 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 36 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:01,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:01,636 INFO L93 Difference]: Finished difference Result 5806 states and 18406 transitions. [2022-02-10 02:53:01,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:53:01,637 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 36 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:01,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:01,648 INFO L225 Difference]: With dead ends: 5806 [2022-02-10 02:53:01,649 INFO L226 Difference]: Without dead ends: 5796 [2022-02-10 02:53:01,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=151, Invalid=1489, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:53:01,649 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 241 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:01,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 872 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:53:01,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5796 states. [2022-02-10 02:53:01,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5796 to 5593. [2022-02-10 02:53:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5593 states, 5592 states have (on average 3.2399856938483547) internal successors, (18118), 5592 states have internal predecessors, (18118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:01,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5593 states to 5593 states and 18118 transitions. [2022-02-10 02:53:01,762 INFO L78 Accepts]: Start accepts. Automaton has 5593 states and 18118 transitions. Word has length 25 [2022-02-10 02:53:01,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:01,762 INFO L470 AbstractCegarLoop]: Abstraction has 5593 states and 18118 transitions. [2022-02-10 02:53:01,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 36 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:01,762 INFO L276 IsEmpty]: Start isEmpty. Operand 5593 states and 18118 transitions. [2022-02-10 02:53:01,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:01,770 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:01,770 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:01,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (270)] Ended with exit code 0 [2022-02-10 02:53:01,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273,270 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:01,970 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:01,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:01,971 INFO L85 PathProgramCache]: Analyzing trace with hash -716298965, now seen corresponding path program 269 times [2022-02-10 02:53:01,971 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:01,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803884831] [2022-02-10 02:53:01,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:01,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:02,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:02,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803884831] [2022-02-10 02:53:02,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803884831] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:02,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146365588] [2022-02-10 02:53:02,150 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:53:02,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:02,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:02,151 INFO L229 MonitoredProcess]: Starting monitored process 271 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:02,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (271)] Waiting until timeout for monitored process [2022-02-10 02:53:02,179 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:53:02,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:02,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:02,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:02,438 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:02,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:02,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146365588] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:02,892 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:02,892 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 35 [2022-02-10 02:53:02,892 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311959679] [2022-02-10 02:53:02,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:02,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:53:02,892 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:02,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:53:02,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:53:02,893 INFO L87 Difference]: Start difference. First operand 5593 states and 18118 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:03,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:03,570 INFO L93 Difference]: Finished difference Result 5805 states and 18402 transitions. [2022-02-10 02:53:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:53:03,571 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:03,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:03,582 INFO L225 Difference]: With dead ends: 5805 [2022-02-10 02:53:03,582 INFO L226 Difference]: Without dead ends: 5793 [2022-02-10 02:53:03,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=1418, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:53:03,583 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 146 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:03,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 1133 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:53:03,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5793 states. [2022-02-10 02:53:03,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5793 to 5561. [2022-02-10 02:53:03,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5561 states, 5560 states have (on average 3.2320143884892087) internal successors, (17970), 5560 states have internal predecessors, (17970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:03,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5561 states to 5561 states and 17970 transitions. [2022-02-10 02:53:03,710 INFO L78 Accepts]: Start accepts. Automaton has 5561 states and 17970 transitions. Word has length 25 [2022-02-10 02:53:03,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:03,711 INFO L470 AbstractCegarLoop]: Abstraction has 5561 states and 17970 transitions. [2022-02-10 02:53:03,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:03,711 INFO L276 IsEmpty]: Start isEmpty. Operand 5561 states and 17970 transitions. [2022-02-10 02:53:03,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:03,718 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:03,718 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:03,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (271)] Ended with exit code 0 [2022-02-10 02:53:03,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,271 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:03,919 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:03,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:03,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1517808529, now seen corresponding path program 270 times [2022-02-10 02:53:03,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:03,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217594863] [2022-02-10 02:53:03,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:03,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:04,095 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:04,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217594863] [2022-02-10 02:53:04,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217594863] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:04,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979264341] [2022-02-10 02:53:04,096 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:53:04,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:04,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:04,097 INFO L229 MonitoredProcess]: Starting monitored process 272 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:04,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (272)] Waiting until timeout for monitored process [2022-02-10 02:53:04,124 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:53:04,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:04,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:04,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:04,384 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:04,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:04,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979264341] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:04,833 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:04,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 34 [2022-02-10 02:53:04,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779668941] [2022-02-10 02:53:04,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:04,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:53:04,834 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:04,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:53:04,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:53:04,834 INFO L87 Difference]: Start difference. First operand 5561 states and 17970 transitions. Second operand has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:05,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:05,563 INFO L93 Difference]: Finished difference Result 5773 states and 18237 transitions. [2022-02-10 02:53:05,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:53:05,564 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:05,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:05,575 INFO L225 Difference]: With dead ends: 5773 [2022-02-10 02:53:05,575 INFO L226 Difference]: Without dead ends: 5760 [2022-02-10 02:53:05,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=137, Invalid=1423, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:53:05,575 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 147 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:05,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 1075 Invalid, 1618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:53:05,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5760 states. [2022-02-10 02:53:05,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5760 to 5537. [2022-02-10 02:53:05,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5537 states, 5536 states have (on average 3.2285043352601157) internal successors, (17873), 5536 states have internal predecessors, (17873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:05,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5537 states to 5537 states and 17873 transitions. [2022-02-10 02:53:05,668 INFO L78 Accepts]: Start accepts. Automaton has 5537 states and 17873 transitions. Word has length 25 [2022-02-10 02:53:05,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:05,668 INFO L470 AbstractCegarLoop]: Abstraction has 5537 states and 17873 transitions. [2022-02-10 02:53:05,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:05,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5537 states and 17873 transitions. [2022-02-10 02:53:05,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:05,675 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:05,675 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:05,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (272)] Forceful destruction successful, exit code 0 [2022-02-10 02:53:05,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275,272 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:05,876 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:05,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:05,877 INFO L85 PathProgramCache]: Analyzing trace with hash 2055664107, now seen corresponding path program 271 times [2022-02-10 02:53:05,877 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:05,877 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359407020] [2022-02-10 02:53:05,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:05,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:06,084 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:06,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359407020] [2022-02-10 02:53:06,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359407020] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:06,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711883246] [2022-02-10 02:53:06,085 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:53:06,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:06,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:06,086 INFO L229 MonitoredProcess]: Starting monitored process 273 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:06,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (273)] Waiting until timeout for monitored process [2022-02-10 02:53:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:06,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:06,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:06,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:06,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711883246] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:06,836 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:06,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 33 [2022-02-10 02:53:06,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833397652] [2022-02-10 02:53:06,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:06,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:53:06,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:06,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:53:06,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:53:06,837 INFO L87 Difference]: Start difference. First operand 5537 states and 17873 transitions. Second operand has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:07,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:07,555 INFO L93 Difference]: Finished difference Result 5754 states and 18133 transitions. [2022-02-10 02:53:07,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:53:07,555 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:07,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:07,566 INFO L225 Difference]: With dead ends: 5754 [2022-02-10 02:53:07,566 INFO L226 Difference]: Without dead ends: 5740 [2022-02-10 02:53:07,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=1422, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:53:07,566 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 185 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:07,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 931 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1502 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:53:07,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5740 states. [2022-02-10 02:53:07,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5740 to 5517. [2022-02-10 02:53:07,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5517 states, 5516 states have (on average 3.22643219724438) internal successors, (17797), 5516 states have internal predecessors, (17797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:07,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 17797 transitions. [2022-02-10 02:53:07,655 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 17797 transitions. Word has length 25 [2022-02-10 02:53:07,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:07,655 INFO L470 AbstractCegarLoop]: Abstraction has 5517 states and 17797 transitions. [2022-02-10 02:53:07,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:07,655 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 17797 transitions. [2022-02-10 02:53:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:07,662 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:07,662 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:07,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (273)] Ended with exit code 0 [2022-02-10 02:53:07,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 273 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable276 [2022-02-10 02:53:07,863 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:07,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:07,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1549317841, now seen corresponding path program 272 times [2022-02-10 02:53:07,863 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:07,863 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56168343] [2022-02-10 02:53:07,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:07,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:08,055 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:08,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:08,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56168343] [2022-02-10 02:53:08,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56168343] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:08,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462412036] [2022-02-10 02:53:08,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:53:08,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:08,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:08,057 INFO L229 MonitoredProcess]: Starting monitored process 274 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:08,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (274)] Waiting until timeout for monitored process [2022-02-10 02:53:08,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:53:08,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:08,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:08,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:08,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:08,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462412036] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:08,737 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:08,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 32 [2022-02-10 02:53:08,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630443170] [2022-02-10 02:53:08,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:08,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 02:53:08,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:08,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 02:53:08,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:53:08,738 INFO L87 Difference]: Start difference. First operand 5517 states and 17797 transitions. Second operand has 33 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 32 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:09,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:09,504 INFO L93 Difference]: Finished difference Result 5692 states and 17999 transitions. [2022-02-10 02:53:09,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:53:09,504 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 32 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:09,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:09,514 INFO L225 Difference]: With dead ends: 5692 [2022-02-10 02:53:09,514 INFO L226 Difference]: Without dead ends: 5678 [2022-02-10 02:53:09,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=1421, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:53:09,515 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 155 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:09,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 875 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:53:09,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5678 states. [2022-02-10 02:53:09,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5678 to 5500. [2022-02-10 02:53:09,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5500 states, 5499 states have (on average 3.226950354609929) internal successors, (17745), 5499 states have internal predecessors, (17745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5500 states to 5500 states and 17745 transitions. [2022-02-10 02:53:09,595 INFO L78 Accepts]: Start accepts. Automaton has 5500 states and 17745 transitions. Word has length 25 [2022-02-10 02:53:09,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:09,595 INFO L470 AbstractCegarLoop]: Abstraction has 5500 states and 17745 transitions. [2022-02-10 02:53:09,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 32 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:09,595 INFO L276 IsEmpty]: Start isEmpty. Operand 5500 states and 17745 transitions. [2022-02-10 02:53:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:09,602 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:09,602 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:09,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (274)] Ended with exit code 0 [2022-02-10 02:53:09,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 274 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable277 [2022-02-10 02:53:09,803 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:09,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:09,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1262514517, now seen corresponding path program 273 times [2022-02-10 02:53:09,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:09,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984302923] [2022-02-10 02:53:09,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:09,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:09,999 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:09,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984302923] [2022-02-10 02:53:09,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984302923] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:09,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566562257] [2022-02-10 02:53:09,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:53:09,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:09,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:10,000 INFO L229 MonitoredProcess]: Starting monitored process 275 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:10,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (275)] Waiting until timeout for monitored process [2022-02-10 02:53:10,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:53:10,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:10,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:10,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:10,305 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:10,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:10,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566562257] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:10,700 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:10,700 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 31 [2022-02-10 02:53:10,700 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470261633] [2022-02-10 02:53:10,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:10,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:53:10,700 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:10,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:53:10,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:53:10,701 INFO L87 Difference]: Start difference. First operand 5500 states and 17745 transitions. Second operand has 32 states, 32 states have (on average 1.6875) internal successors, (54), 31 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:11,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:11,420 INFO L93 Difference]: Finished difference Result 5639 states and 17898 transitions. [2022-02-10 02:53:11,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:53:11,421 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.6875) internal successors, (54), 31 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:11,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:11,432 INFO L225 Difference]: With dead ends: 5639 [2022-02-10 02:53:11,432 INFO L226 Difference]: Without dead ends: 5634 [2022-02-10 02:53:11,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=1286, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:53:11,433 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 127 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:11,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 826 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:53:11,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5634 states. [2022-02-10 02:53:11,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5634 to 5503. [2022-02-10 02:53:11,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5503 states, 5502 states have (on average 3.225736095965104) internal successors, (17748), 5502 states have internal predecessors, (17748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:11,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5503 states to 5503 states and 17748 transitions. [2022-02-10 02:53:11,556 INFO L78 Accepts]: Start accepts. Automaton has 5503 states and 17748 transitions. Word has length 25 [2022-02-10 02:53:11,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:11,556 INFO L470 AbstractCegarLoop]: Abstraction has 5503 states and 17748 transitions. [2022-02-10 02:53:11,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.6875) internal successors, (54), 31 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:11,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5503 states and 17748 transitions. [2022-02-10 02:53:11,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:11,562 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:11,562 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:11,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (275)] Forceful destruction successful, exit code 0 [2022-02-10 02:53:11,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 275 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable278 [2022-02-10 02:53:11,763 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:11,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:11,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1021043733, now seen corresponding path program 274 times [2022-02-10 02:53:11,763 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:11,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432121570] [2022-02-10 02:53:11,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:11,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:11,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:11,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432121570] [2022-02-10 02:53:11,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432121570] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:11,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66406694] [2022-02-10 02:53:11,939 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:53:11,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:11,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:11,941 INFO L229 MonitoredProcess]: Starting monitored process 276 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:11,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (276)] Waiting until timeout for monitored process [2022-02-10 02:53:11,967 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:53:11,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:11,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:11,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:53:12,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:12,719 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:12,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66406694] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:12,719 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:12,719 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 16] total 34 [2022-02-10 02:53:12,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068718067] [2022-02-10 02:53:12,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:12,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:53:12,719 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:12,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:53:12,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1088, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:53:12,720 INFO L87 Difference]: Start difference. First operand 5503 states and 17748 transitions. Second operand has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 34 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:13,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:13,123 INFO L93 Difference]: Finished difference Result 5597 states and 17847 transitions. [2022-02-10 02:53:13,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:53:13,123 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 34 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:13,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:13,134 INFO L225 Difference]: With dead ends: 5597 [2022-02-10 02:53:13,134 INFO L226 Difference]: Without dead ends: 5590 [2022-02-10 02:53:13,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=1273, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:53:13,135 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 191 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:13,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 532 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:53:13,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5590 states. [2022-02-10 02:53:13,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5590 to 5498. [2022-02-10 02:53:13,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5498 states, 5497 states have (on average 3.225213752956158) internal successors, (17729), 5497 states have internal predecessors, (17729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5498 states to 5498 states and 17729 transitions. [2022-02-10 02:53:13,224 INFO L78 Accepts]: Start accepts. Automaton has 5498 states and 17729 transitions. Word has length 25 [2022-02-10 02:53:13,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:13,224 INFO L470 AbstractCegarLoop]: Abstraction has 5498 states and 17729 transitions. [2022-02-10 02:53:13,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 34 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:13,224 INFO L276 IsEmpty]: Start isEmpty. Operand 5498 states and 17729 transitions. [2022-02-10 02:53:13,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:13,232 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:13,232 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:13,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (276)] Forceful destruction successful, exit code 0 [2022-02-10 02:53:13,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 276 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable279 [2022-02-10 02:53:13,433 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:13,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:13,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1401679787, now seen corresponding path program 275 times [2022-02-10 02:53:13,433 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:13,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653338700] [2022-02-10 02:53:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:13,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:13,619 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:13,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653338700] [2022-02-10 02:53:13,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653338700] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:13,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979838403] [2022-02-10 02:53:13,619 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:53:13,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:13,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:13,620 INFO L229 MonitoredProcess]: Starting monitored process 277 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:13,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (277)] Waiting until timeout for monitored process [2022-02-10 02:53:13,647 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:53:13,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:13,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:13,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:13,899 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:13,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:14,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979838403] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:14,382 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:14,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 36 [2022-02-10 02:53:14,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668923288] [2022-02-10 02:53:14,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:14,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:53:14,382 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:14,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:53:14,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:53:14,382 INFO L87 Difference]: Start difference. First operand 5498 states and 17729 transitions. Second operand has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:15,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:15,065 INFO L93 Difference]: Finished difference Result 5823 states and 18411 transitions. [2022-02-10 02:53:15,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:53:15,065 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:15,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:15,079 INFO L225 Difference]: With dead ends: 5823 [2022-02-10 02:53:15,079 INFO L226 Difference]: Without dead ends: 5813 [2022-02-10 02:53:15,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=151, Invalid=1489, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:53:15,080 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 178 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:15,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 1023 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:53:15,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5813 states. [2022-02-10 02:53:15,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5813 to 5622. [2022-02-10 02:53:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5622 states, 5621 states have (on average 3.2348336594911937) internal successors, (18183), 5621 states have internal predecessors, (18183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:15,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5622 states to 5622 states and 18183 transitions. [2022-02-10 02:53:15,171 INFO L78 Accepts]: Start accepts. Automaton has 5622 states and 18183 transitions. Word has length 25 [2022-02-10 02:53:15,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:15,172 INFO L470 AbstractCegarLoop]: Abstraction has 5622 states and 18183 transitions. [2022-02-10 02:53:15,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:15,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5622 states and 18183 transitions. [2022-02-10 02:53:15,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:15,180 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:15,180 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:15,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (277)] Ended with exit code 0 [2022-02-10 02:53:15,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280,277 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:15,380 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:15,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:15,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2049279129, now seen corresponding path program 276 times [2022-02-10 02:53:15,381 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:15,381 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272694645] [2022-02-10 02:53:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:15,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:15,557 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:15,557 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:15,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272694645] [2022-02-10 02:53:15,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272694645] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:15,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302051242] [2022-02-10 02:53:15,557 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:53:15,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:15,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:15,558 INFO L229 MonitoredProcess]: Starting monitored process 278 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:15,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (278)] Waiting until timeout for monitored process [2022-02-10 02:53:15,585 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:53:15,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:15,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:15,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:15,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:16,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302051242] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:16,271 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:16,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 35 [2022-02-10 02:53:16,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894316862] [2022-02-10 02:53:16,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:16,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:53:16,272 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:16,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:53:16,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:53:16,272 INFO L87 Difference]: Start difference. First operand 5622 states and 18183 transitions. Second operand has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:16,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:16,939 INFO L93 Difference]: Finished difference Result 5821 states and 18407 transitions. [2022-02-10 02:53:16,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:53:16,939 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:16,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:16,950 INFO L225 Difference]: With dead ends: 5821 [2022-02-10 02:53:16,950 INFO L226 Difference]: Without dead ends: 5809 [2022-02-10 02:53:16,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=1418, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:53:16,950 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 184 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:16,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 1118 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1562 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:53:16,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5809 states. [2022-02-10 02:53:17,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5809 to 5597. [2022-02-10 02:53:17,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5597 states, 5596 states have (on average 3.2303431022158686) internal successors, (18077), 5596 states have internal predecessors, (18077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 18077 transitions. [2022-02-10 02:53:17,059 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 18077 transitions. Word has length 25 [2022-02-10 02:53:17,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:17,059 INFO L470 AbstractCegarLoop]: Abstraction has 5597 states and 18077 transitions. [2022-02-10 02:53:17,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:17,059 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 18077 transitions. [2022-02-10 02:53:17,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:17,067 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:17,067 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:17,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (278)] Ended with exit code 0 [2022-02-10 02:53:17,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 278 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable281 [2022-02-10 02:53:17,268 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:17,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:17,268 INFO L85 PathProgramCache]: Analyzing trace with hash 184828365, now seen corresponding path program 277 times [2022-02-10 02:53:17,268 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:17,268 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306490947] [2022-02-10 02:53:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:17,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:17,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:17,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306490947] [2022-02-10 02:53:17,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306490947] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:17,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941561542] [2022-02-10 02:53:17,447 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:53:17,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:17,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:17,448 INFO L229 MonitoredProcess]: Starting monitored process 279 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:17,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (279)] Waiting until timeout for monitored process [2022-02-10 02:53:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:17,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:17,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:17,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:18,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941561542] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:18,148 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:18,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 34 [2022-02-10 02:53:18,148 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589029614] [2022-02-10 02:53:18,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:18,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:53:18,148 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:18,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:53:18,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:53:18,149 INFO L87 Difference]: Start difference. First operand 5597 states and 18077 transitions. Second operand has 35 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:18,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:18,784 INFO L93 Difference]: Finished difference Result 5801 states and 18297 transitions. [2022-02-10 02:53:18,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:53:18,784 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:18,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:18,793 INFO L225 Difference]: With dead ends: 5801 [2022-02-10 02:53:18,794 INFO L226 Difference]: Without dead ends: 5788 [2022-02-10 02:53:18,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=137, Invalid=1423, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:53:18,794 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 209 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:18,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 918 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:53:18,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2022-02-10 02:53:18,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 5580. [2022-02-10 02:53:18,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5580 states, 5579 states have (on average 3.228177092668937) internal successors, (18010), 5579 states have internal predecessors, (18010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:18,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5580 states to 5580 states and 18010 transitions. [2022-02-10 02:53:18,872 INFO L78 Accepts]: Start accepts. Automaton has 5580 states and 18010 transitions. Word has length 25 [2022-02-10 02:53:18,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:18,872 INFO L470 AbstractCegarLoop]: Abstraction has 5580 states and 18010 transitions. [2022-02-10 02:53:18,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:18,872 INFO L276 IsEmpty]: Start isEmpty. Operand 5580 states and 18010 transitions. [2022-02-10 02:53:18,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:18,879 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:18,879 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:18,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (279)] Ended with exit code 0 [2022-02-10 02:53:19,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 279 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable282 [2022-02-10 02:53:19,079 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:19,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:19,079 INFO L85 PathProgramCache]: Analyzing trace with hash 722683943, now seen corresponding path program 278 times [2022-02-10 02:53:19,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:19,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156773312] [2022-02-10 02:53:19,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:19,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:19,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:19,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156773312] [2022-02-10 02:53:19,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156773312] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:19,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283251047] [2022-02-10 02:53:19,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:53:19,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:19,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:19,264 INFO L229 MonitoredProcess]: Starting monitored process 280 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:19,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (280)] Waiting until timeout for monitored process [2022-02-10 02:53:19,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:53:19,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:19,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:19,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:19,544 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:19,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:19,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283251047] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:19,987 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:19,987 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 33 [2022-02-10 02:53:19,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453921858] [2022-02-10 02:53:19,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:19,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:53:19,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:19,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:53:19,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:53:19,987 INFO L87 Difference]: Start difference. First operand 5580 states and 18010 transitions. Second operand has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 33 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:20,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:20,755 INFO L93 Difference]: Finished difference Result 5797 states and 18244 transitions. [2022-02-10 02:53:20,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:53:20,756 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 33 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:20,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:20,767 INFO L225 Difference]: With dead ends: 5797 [2022-02-10 02:53:20,767 INFO L226 Difference]: Without dead ends: 5783 [2022-02-10 02:53:20,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=1422, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:53:20,767 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 169 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:20,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 1046 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:53:20,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5783 states. [2022-02-10 02:53:20,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5783 to 5564. [2022-02-10 02:53:20,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5564 states, 5563 states have (on average 3.226856012942657) internal successors, (17951), 5563 states have internal predecessors, (17951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:20,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5564 states to 5564 states and 17951 transitions. [2022-02-10 02:53:20,852 INFO L78 Accepts]: Start accepts. Automaton has 5564 states and 17951 transitions. Word has length 25 [2022-02-10 02:53:20,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:20,852 INFO L470 AbstractCegarLoop]: Abstraction has 5564 states and 17951 transitions. [2022-02-10 02:53:20,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 33 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:20,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5564 states and 17951 transitions. [2022-02-10 02:53:20,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:20,860 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:20,860 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:20,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (280)] Ended with exit code 0 [2022-02-10 02:53:21,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283,280 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:21,060 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:21,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:21,061 INFO L85 PathProgramCache]: Analyzing trace with hash 216337677, now seen corresponding path program 279 times [2022-02-10 02:53:21,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:21,061 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176948126] [2022-02-10 02:53:21,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:21,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:21,253 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:21,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176948126] [2022-02-10 02:53:21,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176948126] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:21,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096469086] [2022-02-10 02:53:21,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:53:21,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:21,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:21,255 INFO L229 MonitoredProcess]: Starting monitored process 281 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:21,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (281)] Waiting until timeout for monitored process [2022-02-10 02:53:21,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:53:21,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:21,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:21,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:21,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:21,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096469086] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:21,968 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:21,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 32 [2022-02-10 02:53:21,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601251464] [2022-02-10 02:53:21,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:21,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 02:53:21,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:21,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 02:53:21,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:53:21,969 INFO L87 Difference]: Start difference. First operand 5564 states and 17951 transitions. Second operand has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:22,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:22,677 INFO L93 Difference]: Finished difference Result 5793 states and 18196 transitions. [2022-02-10 02:53:22,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:53:22,677 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:22,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:22,689 INFO L225 Difference]: With dead ends: 5793 [2022-02-10 02:53:22,689 INFO L226 Difference]: Without dead ends: 5778 [2022-02-10 02:53:22,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=1421, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:53:22,689 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 197 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:22,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 847 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:53:22,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5778 states. [2022-02-10 02:53:22,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5778 to 5549. [2022-02-10 02:53:22,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5549 states, 5548 states have (on average 3.2263878875270366) internal successors, (17900), 5548 states have internal predecessors, (17900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:22,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 17900 transitions. [2022-02-10 02:53:22,792 INFO L78 Accepts]: Start accepts. Automaton has 5549 states and 17900 transitions. Word has length 25 [2022-02-10 02:53:22,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:22,792 INFO L470 AbstractCegarLoop]: Abstraction has 5549 states and 17900 transitions. [2022-02-10 02:53:22,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:22,793 INFO L276 IsEmpty]: Start isEmpty. Operand 5549 states and 17900 transitions. [2022-02-10 02:53:22,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:22,800 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:22,800 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:22,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (281)] Ended with exit code 0 [2022-02-10 02:53:23,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284,281 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:23,000 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:23,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:23,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1699472615, now seen corresponding path program 280 times [2022-02-10 02:53:23,001 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:23,001 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234764064] [2022-02-10 02:53:23,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:23,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:23,196 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:23,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234764064] [2022-02-10 02:53:23,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234764064] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:23,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10882856] [2022-02-10 02:53:23,196 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:53:23,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:23,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:23,197 INFO L229 MonitoredProcess]: Starting monitored process 282 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:23,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (282)] Waiting until timeout for monitored process [2022-02-10 02:53:23,223 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:53:23,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:23,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:23,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:23,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:23,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10882856] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:23,844 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:23,844 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 31 [2022-02-10 02:53:23,844 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396707486] [2022-02-10 02:53:23,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:23,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:53:23,844 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:23,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:53:23,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:53:23,845 INFO L87 Difference]: Start difference. First operand 5549 states and 17900 transitions. Second operand has 32 states, 32 states have (on average 1.65625) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:24,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:24,615 INFO L93 Difference]: Finished difference Result 5727 states and 18089 transitions. [2022-02-10 02:53:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 02:53:24,616 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.65625) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:24,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:24,626 INFO L225 Difference]: With dead ends: 5727 [2022-02-10 02:53:24,626 INFO L226 Difference]: Without dead ends: 5712 [2022-02-10 02:53:24,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=1420, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:53:24,627 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 182 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:24,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 848 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:53:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5712 states. [2022-02-10 02:53:24,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5712 to 5535. [2022-02-10 02:53:24,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5535 states, 5534 states have (on average 3.2267799060354174) internal successors, (17857), 5534 states have internal predecessors, (17857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5535 states to 5535 states and 17857 transitions. [2022-02-10 02:53:24,708 INFO L78 Accepts]: Start accepts. Automaton has 5535 states and 17857 transitions. Word has length 25 [2022-02-10 02:53:24,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:24,708 INFO L470 AbstractCegarLoop]: Abstraction has 5535 states and 17857 transitions. [2022-02-10 02:53:24,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.65625) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:24,708 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states and 17857 transitions. [2022-02-10 02:53:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:24,715 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:24,715 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:24,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (282)] Forceful destruction successful, exit code 0 [2022-02-10 02:53:24,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285,282 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:24,916 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:24,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:24,916 INFO L85 PathProgramCache]: Analyzing trace with hash 432015437, now seen corresponding path program 281 times [2022-02-10 02:53:24,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:24,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242984957] [2022-02-10 02:53:24,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:24,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:25,118 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:25,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242984957] [2022-02-10 02:53:25,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242984957] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:25,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457585720] [2022-02-10 02:53:25,118 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:53:25,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:25,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:25,119 INFO L229 MonitoredProcess]: Starting monitored process 283 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:25,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (283)] Waiting until timeout for monitored process [2022-02-10 02:53:25,146 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:53:25,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:25,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:25,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:25,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:25,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457585720] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:25,790 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:25,790 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 30 [2022-02-10 02:53:25,790 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430534721] [2022-02-10 02:53:25,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:25,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 02:53:25,791 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:25,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 02:53:25,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:53:25,791 INFO L87 Difference]: Start difference. First operand 5535 states and 17857 transitions. Second operand has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:26,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:26,587 INFO L93 Difference]: Finished difference Result 5675 states and 18003 transitions. [2022-02-10 02:53:26,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:53:26,587 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:26,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:26,597 INFO L225 Difference]: With dead ends: 5675 [2022-02-10 02:53:26,597 INFO L226 Difference]: Without dead ends: 5670 [2022-02-10 02:53:26,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 28 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=121, Invalid=1285, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:53:26,598 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 129 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:26,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 881 Invalid, 1787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:53:26,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5670 states. [2022-02-10 02:53:26,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5670 to 5539. [2022-02-10 02:53:26,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5539 states, 5538 states have (on average 3.2251715420729505) internal successors, (17861), 5538 states have internal predecessors, (17861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:26,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5539 states to 5539 states and 17861 transitions. [2022-02-10 02:53:26,674 INFO L78 Accepts]: Start accepts. Automaton has 5539 states and 17861 transitions. Word has length 25 [2022-02-10 02:53:26,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:26,674 INFO L470 AbstractCegarLoop]: Abstraction has 5539 states and 17861 transitions. [2022-02-10 02:53:26,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:26,674 INFO L276 IsEmpty]: Start isEmpty. Operand 5539 states and 17861 transitions. [2022-02-10 02:53:26,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:26,681 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:26,681 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:26,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (283)] Ended with exit code 0 [2022-02-10 02:53:26,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 283 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable286 [2022-02-10 02:53:26,881 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:26,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:26,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1505401425, now seen corresponding path program 282 times [2022-02-10 02:53:26,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:26,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795356909] [2022-02-10 02:53:26,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:26,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:27,058 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:27,059 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:27,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795356909] [2022-02-10 02:53:27,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795356909] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:27,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536689070] [2022-02-10 02:53:27,059 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:53:27,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:27,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:27,060 INFO L229 MonitoredProcess]: Starting monitored process 284 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:27,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (284)] Waiting until timeout for monitored process [2022-02-10 02:53:27,090 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:53:27,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:27,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:27,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:27,377 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:53:27,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:27,828 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:27,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536689070] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:27,828 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:27,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 16] total 34 [2022-02-10 02:53:27,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394930488] [2022-02-10 02:53:27,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:27,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:53:27,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:27,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:53:27,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1088, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:53:27,829 INFO L87 Difference]: Start difference. First operand 5539 states and 17861 transitions. Second operand has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 34 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:28,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:28,201 INFO L93 Difference]: Finished difference Result 5603 states and 17928 transitions. [2022-02-10 02:53:28,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:53:28,201 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 34 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:28,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:28,210 INFO L225 Difference]: With dead ends: 5603 [2022-02-10 02:53:28,210 INFO L226 Difference]: Without dead ends: 5599 [2022-02-10 02:53:28,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 10 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=1275, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:53:28,210 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 107 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:28,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 428 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:53:28,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5599 states. [2022-02-10 02:53:28,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5599 to 5534. [2022-02-10 02:53:28,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5534 states, 5533 states have (on average 3.2253750225917224) internal successors, (17846), 5533 states have internal predecessors, (17846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:28,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5534 states to 5534 states and 17846 transitions. [2022-02-10 02:53:28,284 INFO L78 Accepts]: Start accepts. Automaton has 5534 states and 17846 transitions. Word has length 25 [2022-02-10 02:53:28,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:28,284 INFO L470 AbstractCegarLoop]: Abstraction has 5534 states and 17846 transitions. [2022-02-10 02:53:28,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 34 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:28,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5534 states and 17846 transitions. [2022-02-10 02:53:28,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:28,290 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:28,291 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:28,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (284)] Ended with exit code 0 [2022-02-10 02:53:28,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 284 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable287 [2022-02-10 02:53:28,491 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:28,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:28,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1265999633, now seen corresponding path program 283 times [2022-02-10 02:53:28,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:28,491 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11197497] [2022-02-10 02:53:28,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:28,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:28,672 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:28,672 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:28,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11197497] [2022-02-10 02:53:28,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11197497] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:28,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961023886] [2022-02-10 02:53:28,673 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:53:28,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:28,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:28,674 INFO L229 MonitoredProcess]: Starting monitored process 285 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:28,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (285)] Waiting until timeout for monitored process [2022-02-10 02:53:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:28,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:28,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:28,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:29,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961023886] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:29,418 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:29,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-02-10 02:53:29,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376549151] [2022-02-10 02:53:29,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:29,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:53:29,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:29,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:53:29,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:53:29,419 INFO L87 Difference]: Start difference. First operand 5534 states and 17846 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:30,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:30,148 INFO L93 Difference]: Finished difference Result 5794 states and 18301 transitions. [2022-02-10 02:53:30,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:53:30,149 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:30,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:30,160 INFO L225 Difference]: With dead ends: 5794 [2022-02-10 02:53:30,161 INFO L226 Difference]: Without dead ends: 5786 [2022-02-10 02:53:30,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=1493, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:53:30,161 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 201 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 1691 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:30,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 1107 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1691 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:53:30,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2022-02-10 02:53:30,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 5605. [2022-02-10 02:53:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5605 states, 5604 states have (on average 3.2298358315488938) internal successors, (18100), 5604 states have internal predecessors, (18100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:30,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5605 states to 5605 states and 18100 transitions. [2022-02-10 02:53:30,273 INFO L78 Accepts]: Start accepts. Automaton has 5605 states and 18100 transitions. Word has length 25 [2022-02-10 02:53:30,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:30,273 INFO L470 AbstractCegarLoop]: Abstraction has 5605 states and 18100 transitions. [2022-02-10 02:53:30,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:30,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5605 states and 18100 transitions. [2022-02-10 02:53:30,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:30,281 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:30,281 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:30,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (285)] Forceful destruction successful, exit code 0 [2022-02-10 02:53:30,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 285 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable288 [2022-02-10 02:53:30,482 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:30,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:30,482 INFO L85 PathProgramCache]: Analyzing trace with hash -421991253, now seen corresponding path program 284 times [2022-02-10 02:53:30,482 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:30,482 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601930921] [2022-02-10 02:53:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:30,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:30,680 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:30,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601930921] [2022-02-10 02:53:30,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601930921] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:30,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690551341] [2022-02-10 02:53:30,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:53:30,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:30,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:30,681 INFO L229 MonitoredProcess]: Starting monitored process 286 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:30,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (286)] Waiting until timeout for monitored process [2022-02-10 02:53:30,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:53:30,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:30,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:30,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:30,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:31,403 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:31,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690551341] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:31,403 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:31,403 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-02-10 02:53:31,403 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135414728] [2022-02-10 02:53:31,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:31,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:53:31,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:31,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:53:31,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:53:31,404 INFO L87 Difference]: Start difference. First operand 5605 states and 18100 transitions. Second operand has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:32,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:32,173 INFO L93 Difference]: Finished difference Result 5796 states and 18302 transitions. [2022-02-10 02:53:32,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:53:32,173 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:32,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:32,184 INFO L225 Difference]: With dead ends: 5796 [2022-02-10 02:53:32,184 INFO L226 Difference]: Without dead ends: 5785 [2022-02-10 02:53:32,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=1422, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:53:32,184 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 160 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:32,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 1352 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:53:32,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5785 states. [2022-02-10 02:53:32,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5785 to 5594. [2022-02-10 02:53:32,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5594 states, 5593 states have (on average 3.228321115680315) internal successors, (18056), 5593 states have internal predecessors, (18056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:32,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5594 states to 5594 states and 18056 transitions. [2022-02-10 02:53:32,279 INFO L78 Accepts]: Start accepts. Automaton has 5594 states and 18056 transitions. Word has length 25 [2022-02-10 02:53:32,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:32,279 INFO L470 AbstractCegarLoop]: Abstraction has 5594 states and 18056 transitions. [2022-02-10 02:53:32,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:32,280 INFO L276 IsEmpty]: Start isEmpty. Operand 5594 states and 18056 transitions. [2022-02-10 02:53:32,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:32,289 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:32,289 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:32,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (286)] Forceful destruction successful, exit code 0 [2022-02-10 02:53:32,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 286 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable289 [2022-02-10 02:53:32,495 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:32,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:32,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1812116241, now seen corresponding path program 285 times [2022-02-10 02:53:32,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:32,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44549621] [2022-02-10 02:53:32,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:32,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:32,681 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:32,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44549621] [2022-02-10 02:53:32,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44549621] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:32,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927571223] [2022-02-10 02:53:32,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:53:32,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:32,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:32,682 INFO L229 MonitoredProcess]: Starting monitored process 287 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:32,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (287)] Waiting until timeout for monitored process [2022-02-10 02:53:32,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:53:32,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:32,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:32,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:32,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:33,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927571223] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:33,400 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:33,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-10 02:53:33,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482091341] [2022-02-10 02:53:33,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:33,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:53:33,400 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:33,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:53:33,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:53:33,401 INFO L87 Difference]: Start difference. First operand 5594 states and 18056 transitions. Second operand has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:34,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:34,182 INFO L93 Difference]: Finished difference Result 5794 states and 18267 transitions. [2022-02-10 02:53:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:53:34,183 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:34,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:34,193 INFO L225 Difference]: With dead ends: 5794 [2022-02-10 02:53:34,193 INFO L226 Difference]: Without dead ends: 5782 [2022-02-10 02:53:34,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=1427, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:53:34,193 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 200 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:34,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 1166 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:53:34,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5782 states. [2022-02-10 02:53:34,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5782 to 5584. [2022-02-10 02:53:34,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5584 states, 5583 states have (on average 3.2272971520687803) internal successors, (18018), 5583 states have internal predecessors, (18018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:34,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5584 states to 5584 states and 18018 transitions. [2022-02-10 02:53:34,276 INFO L78 Accepts]: Start accepts. Automaton has 5584 states and 18018 transitions. Word has length 25 [2022-02-10 02:53:34,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:34,276 INFO L470 AbstractCegarLoop]: Abstraction has 5584 states and 18018 transitions. [2022-02-10 02:53:34,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:34,276 INFO L276 IsEmpty]: Start isEmpty. Operand 5584 states and 18018 transitions. [2022-02-10 02:53:34,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:34,283 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:34,283 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:34,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (287)] Forceful destruction successful, exit code 0 [2022-02-10 02:53:34,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290,287 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:34,484 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:34,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:34,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1944995477, now seen corresponding path program 286 times [2022-02-10 02:53:34,484 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:34,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381901949] [2022-02-10 02:53:34,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:34,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:34,669 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:34,670 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:34,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381901949] [2022-02-10 02:53:34,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381901949] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:34,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658409952] [2022-02-10 02:53:34,670 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:53:34,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:34,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:34,671 INFO L229 MonitoredProcess]: Starting monitored process 288 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:34,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (288)] Waiting until timeout for monitored process [2022-02-10 02:53:34,697 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:53:34,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:34,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:34,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:34,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:35,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658409952] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:35,363 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:35,363 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-02-10 02:53:35,363 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641051084] [2022-02-10 02:53:35,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:35,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:53:35,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:35,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:53:35,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:53:35,364 INFO L87 Difference]: Start difference. First operand 5584 states and 18018 transitions. Second operand has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:36,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:36,097 INFO L93 Difference]: Finished difference Result 5795 states and 18240 transitions. [2022-02-10 02:53:36,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:53:36,097 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:36,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:36,107 INFO L225 Difference]: With dead ends: 5795 [2022-02-10 02:53:36,107 INFO L226 Difference]: Without dead ends: 5782 [2022-02-10 02:53:36,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=1426, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:53:36,108 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 196 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:36,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 1008 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:53:36,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5782 states. [2022-02-10 02:53:36,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5782 to 5574. [2022-02-10 02:53:36,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 5573 states have (on average 3.2266283868652432) internal successors, (17982), 5573 states have internal predecessors, (17982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:36,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 17982 transitions. [2022-02-10 02:53:36,216 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 17982 transitions. Word has length 25 [2022-02-10 02:53:36,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:36,216 INFO L470 AbstractCegarLoop]: Abstraction has 5574 states and 17982 transitions. [2022-02-10 02:53:36,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:36,217 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 17982 transitions. [2022-02-10 02:53:36,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:36,223 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:36,223 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:36,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (288)] Forceful destruction successful, exit code 0 [2022-02-10 02:53:36,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 288 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable291 [2022-02-10 02:53:36,423 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:36,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:36,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1843625553, now seen corresponding path program 287 times [2022-02-10 02:53:36,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:36,424 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573260886] [2022-02-10 02:53:36,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:36,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:36,617 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:36,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573260886] [2022-02-10 02:53:36,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573260886] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:36,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490271365] [2022-02-10 02:53:36,618 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:53:36,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:36,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:36,619 INFO L229 MonitoredProcess]: Starting monitored process 289 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:36,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (289)] Waiting until timeout for monitored process [2022-02-10 02:53:36,645 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:53:36,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:36,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:36,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:36,914 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:36,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:37,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490271365] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:37,319 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:37,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-02-10 02:53:37,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684215314] [2022-02-10 02:53:37,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:37,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 02:53:37,319 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:37,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 02:53:37,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:53:37,320 INFO L87 Difference]: Start difference. First operand 5574 states and 17982 transitions. Second operand has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 32 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:38,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:38,207 INFO L93 Difference]: Finished difference Result 5798 states and 18217 transitions. [2022-02-10 02:53:38,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 02:53:38,207 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 32 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:38,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:38,217 INFO L225 Difference]: With dead ends: 5798 [2022-02-10 02:53:38,217 INFO L226 Difference]: Without dead ends: 5784 [2022-02-10 02:53:38,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=135, Invalid=1425, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:53:38,217 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 189 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:38,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 1180 Invalid, 1977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:53:38,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5784 states. [2022-02-10 02:53:38,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5784 to 5564. [2022-02-10 02:53:38,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5564 states, 5563 states have (on average 3.2263167355743305) internal successors, (17948), 5563 states have internal predecessors, (17948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:38,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5564 states to 5564 states and 17948 transitions. [2022-02-10 02:53:38,295 INFO L78 Accepts]: Start accepts. Automaton has 5564 states and 17948 transitions. Word has length 25 [2022-02-10 02:53:38,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:38,296 INFO L470 AbstractCegarLoop]: Abstraction has 5564 states and 17948 transitions. [2022-02-10 02:53:38,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 32 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:38,296 INFO L276 IsEmpty]: Start isEmpty. Operand 5564 states and 17948 transitions. [2022-02-10 02:53:38,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:38,302 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:38,303 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:38,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (289)] Ended with exit code 0 [2022-02-10 02:53:38,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292,289 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:38,503 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:38,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:38,503 INFO L85 PathProgramCache]: Analyzing trace with hash -968206805, now seen corresponding path program 288 times [2022-02-10 02:53:38,503 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:38,503 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032211804] [2022-02-10 02:53:38,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:38,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:38,702 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:38,703 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:38,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032211804] [2022-02-10 02:53:38,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032211804] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:38,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013572568] [2022-02-10 02:53:38,703 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:53:38,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:38,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:38,704 INFO L229 MonitoredProcess]: Starting monitored process 290 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:38,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (290)] Waiting until timeout for monitored process [2022-02-10 02:53:38,731 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:53:38,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:38,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:38,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:38,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:39,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013572568] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:39,379 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:39,379 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-02-10 02:53:39,379 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978840396] [2022-02-10 02:53:39,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:39,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:53:39,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:39,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:53:39,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:53:39,380 INFO L87 Difference]: Start difference. First operand 5564 states and 17948 transitions. Second operand has 32 states, 32 states have (on average 1.59375) internal successors, (51), 31 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:40,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:40,286 INFO L93 Difference]: Finished difference Result 5803 states and 18198 transitions. [2022-02-10 02:53:40,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:53:40,286 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 31 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:40,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:40,297 INFO L225 Difference]: With dead ends: 5803 [2022-02-10 02:53:40,297 INFO L226 Difference]: Without dead ends: 5788 [2022-02-10 02:53:40,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=1424, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:53:40,297 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 177 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:40,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 1118 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:53:40,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2022-02-10 02:53:40,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 5554. [2022-02-10 02:53:40,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5554 states, 5553 states have (on average 3.226364127498649) internal successors, (17916), 5553 states have internal predecessors, (17916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:40,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5554 states to 5554 states and 17916 transitions. [2022-02-10 02:53:40,384 INFO L78 Accepts]: Start accepts. Automaton has 5554 states and 17916 transitions. Word has length 25 [2022-02-10 02:53:40,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:40,384 INFO L470 AbstractCegarLoop]: Abstraction has 5554 states and 17916 transitions. [2022-02-10 02:53:40,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 31 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:40,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5554 states and 17916 transitions. [2022-02-10 02:53:40,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:40,391 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:40,391 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:40,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (290)] Ended with exit code 0 [2022-02-10 02:53:40,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 290 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable293 [2022-02-10 02:53:40,592 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:40,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:40,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2059303313, now seen corresponding path program 289 times [2022-02-10 02:53:40,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:40,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771137845] [2022-02-10 02:53:40,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:40,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:40,825 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:40,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771137845] [2022-02-10 02:53:40,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771137845] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:40,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008403761] [2022-02-10 02:53:40,826 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:53:40,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:40,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:40,827 INFO L229 MonitoredProcess]: Starting monitored process 291 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:40,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (291)] Waiting until timeout for monitored process [2022-02-10 02:53:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:40,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:40,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:41,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:41,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008403761] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:41,490 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:41,490 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 30 [2022-02-10 02:53:41,490 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676789940] [2022-02-10 02:53:41,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:41,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 02:53:41,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:41,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 02:53:41,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:53:41,490 INFO L87 Difference]: Start difference. First operand 5554 states and 17916 transitions. Second operand has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:42,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:42,418 INFO L93 Difference]: Finished difference Result 5732 states and 18102 transitions. [2022-02-10 02:53:42,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 02:53:42,418 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:42,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:42,428 INFO L225 Difference]: With dead ends: 5732 [2022-02-10 02:53:42,428 INFO L226 Difference]: Without dead ends: 5716 [2022-02-10 02:53:42,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=137, Invalid=1423, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:53:42,428 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 134 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:42,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 1014 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1918 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:53:42,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5716 states. [2022-02-10 02:53:42,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5716 to 5541. [2022-02-10 02:53:42,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5541 states, 5540 states have (on average 3.228158844765343) internal successors, (17884), 5540 states have internal predecessors, (17884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5541 states to 5541 states and 17884 transitions. [2022-02-10 02:53:42,506 INFO L78 Accepts]: Start accepts. Automaton has 5541 states and 17884 transitions. Word has length 25 [2022-02-10 02:53:42,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:42,507 INFO L470 AbstractCegarLoop]: Abstraction has 5541 states and 17884 transitions. [2022-02-10 02:53:42,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:42,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5541 states and 17884 transitions. [2022-02-10 02:53:42,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:42,514 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:42,514 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:42,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (291)] Ended with exit code 0 [2022-02-10 02:53:42,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294,291 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:42,715 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:42,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:42,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1422836459, now seen corresponding path program 290 times [2022-02-10 02:53:42,715 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:42,715 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391821505] [2022-02-10 02:53:42,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:42,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:42,925 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:42,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:42,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391821505] [2022-02-10 02:53:42,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391821505] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:42,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18779623] [2022-02-10 02:53:42,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:53:42,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:42,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:42,926 INFO L229 MonitoredProcess]: Starting monitored process 292 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:42,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (292)] Waiting until timeout for monitored process [2022-02-10 02:53:42,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:53:42,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:42,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:42,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:43,234 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:43,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:43,570 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:43,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18779623] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:43,570 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:43,570 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 29 [2022-02-10 02:53:43,570 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535487642] [2022-02-10 02:53:43,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:43,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:53:43,570 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:43,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:53:43,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:53:43,571 INFO L87 Difference]: Start difference. First operand 5541 states and 17884 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:44,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:44,406 INFO L93 Difference]: Finished difference Result 5683 states and 18030 transitions. [2022-02-10 02:53:44,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 02:53:44,407 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:44,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:44,417 INFO L225 Difference]: With dead ends: 5683 [2022-02-10 02:53:44,417 INFO L226 Difference]: Without dead ends: 5678 [2022-02-10 02:53:44,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=1217, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:53:44,417 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 127 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 1843 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:44,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 945 Invalid, 1858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1843 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:53:44,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5678 states. [2022-02-10 02:53:44,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5678 to 5547. [2022-02-10 02:53:44,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5547 states, 5546 states have (on average 3.2257482870537326) internal successors, (17890), 5546 states have internal predecessors, (17890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:44,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5547 states to 5547 states and 17890 transitions. [2022-02-10 02:53:44,545 INFO L78 Accepts]: Start accepts. Automaton has 5547 states and 17890 transitions. Word has length 25 [2022-02-10 02:53:44,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:44,545 INFO L470 AbstractCegarLoop]: Abstraction has 5547 states and 17890 transitions. [2022-02-10 02:53:44,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:44,546 INFO L276 IsEmpty]: Start isEmpty. Operand 5547 states and 17890 transitions. [2022-02-10 02:53:44,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:44,553 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:44,553 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:44,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (292)] Ended with exit code 0 [2022-02-10 02:53:44,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295,292 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:44,754 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:44,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:44,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1641122833, now seen corresponding path program 291 times [2022-02-10 02:53:44,754 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:44,754 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558771502] [2022-02-10 02:53:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:44,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:44,943 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:44,943 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:44,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558771502] [2022-02-10 02:53:44,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558771502] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:44,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29161447] [2022-02-10 02:53:44,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:53:44,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:44,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:44,944 INFO L229 MonitoredProcess]: Starting monitored process 293 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:44,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (293)] Waiting until timeout for monitored process [2022-02-10 02:53:44,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:53:44,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:44,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:44,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:45,284 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:45,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:45,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29161447] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:45,741 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:45,741 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 16] total 36 [2022-02-10 02:53:45,741 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884416193] [2022-02-10 02:53:45,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:45,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:53:45,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:45,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:53:45,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:53:45,742 INFO L87 Difference]: Start difference. First operand 5547 states and 17890 transitions. Second operand has 37 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 36 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:46,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:46,236 INFO L93 Difference]: Finished difference Result 5696 states and 18135 transitions. [2022-02-10 02:53:46,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:53:46,236 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 36 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:46,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:46,246 INFO L225 Difference]: With dead ends: 5696 [2022-02-10 02:53:46,247 INFO L226 Difference]: Without dead ends: 5690 [2022-02-10 02:53:46,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=136, Invalid=1424, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:53:46,247 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 150 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:46,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 639 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:53:46,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5690 states. [2022-02-10 02:53:46,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5690 to 5558. [2022-02-10 02:53:46,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 5557 states have (on average 3.2262011876912005) internal successors, (17928), 5557 states have internal predecessors, (17928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:46,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 17928 transitions. [2022-02-10 02:53:46,328 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 17928 transitions. Word has length 25 [2022-02-10 02:53:46,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:46,328 INFO L470 AbstractCegarLoop]: Abstraction has 5558 states and 17928 transitions. [2022-02-10 02:53:46,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 36 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:46,328 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 17928 transitions. [2022-02-10 02:53:46,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:46,335 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:46,335 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:46,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (293)] Ended with exit code 0 [2022-02-10 02:53:46,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296,293 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:46,535 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:46,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:46,536 INFO L85 PathProgramCache]: Analyzing trace with hash -797114453, now seen corresponding path program 292 times [2022-02-10 02:53:46,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:46,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547048486] [2022-02-10 02:53:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:46,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:46,714 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:46,715 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:46,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547048486] [2022-02-10 02:53:46,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547048486] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:46,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053853749] [2022-02-10 02:53:46,715 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:53:46,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:46,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:46,716 INFO L229 MonitoredProcess]: Starting monitored process 294 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:46,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (294)] Waiting until timeout for monitored process [2022-02-10 02:53:46,742 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:53:46,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:46,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:46,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:47,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:47,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053853749] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:47,511 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:47,511 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 16] total 35 [2022-02-10 02:53:47,511 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913866869] [2022-02-10 02:53:47,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:47,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:53:47,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:47,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:53:47,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:53:47,512 INFO L87 Difference]: Start difference. First operand 5558 states and 17928 transitions. Second operand has 36 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 35 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:47,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:47,979 INFO L93 Difference]: Finished difference Result 5685 states and 18123 transitions. [2022-02-10 02:53:47,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:53:47,979 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 35 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:47,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:47,990 INFO L225 Difference]: With dead ends: 5685 [2022-02-10 02:53:47,990 INFO L226 Difference]: Without dead ends: 5680 [2022-02-10 02:53:47,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=1288, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:53:47,990 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 146 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:47,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 656 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:53:47,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5680 states. [2022-02-10 02:53:48,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5680 to 5558. [2022-02-10 02:53:48,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 5557 states have (on average 3.2262011876912005) internal successors, (17928), 5557 states have internal predecessors, (17928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:48,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 17928 transitions. [2022-02-10 02:53:48,077 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 17928 transitions. Word has length 25 [2022-02-10 02:53:48,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:48,077 INFO L470 AbstractCegarLoop]: Abstraction has 5558 states and 17928 transitions. [2022-02-10 02:53:48,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 35 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:48,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 17928 transitions. [2022-02-10 02:53:48,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:48,085 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:48,085 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:48,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (294)] Ended with exit code 0 [2022-02-10 02:53:48,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297,294 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:48,285 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:48,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:48,286 INFO L85 PathProgramCache]: Analyzing trace with hash 659379307, now seen corresponding path program 293 times [2022-02-10 02:53:48,286 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:48,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34764878] [2022-02-10 02:53:48,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:48,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:48,472 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:48,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34764878] [2022-02-10 02:53:48,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34764878] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:48,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527860247] [2022-02-10 02:53:48,472 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:53:48,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:48,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:48,473 INFO L229 MonitoredProcess]: Starting monitored process 295 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:48,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (295)] Waiting until timeout for monitored process [2022-02-10 02:53:48,500 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:53:48,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:48,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:48,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:48,816 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:48,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:49,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527860247] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:49,272 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:49,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 16] total 34 [2022-02-10 02:53:49,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243131612] [2022-02-10 02:53:49,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:49,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:53:49,273 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:49,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:53:49,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:53:49,273 INFO L87 Difference]: Start difference. First operand 5558 states and 17928 transitions. Second operand has 35 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 34 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:49,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:49,719 INFO L93 Difference]: Finished difference Result 5656 states and 18064 transitions. [2022-02-10 02:53:49,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:53:49,719 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 34 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:49,730 INFO L225 Difference]: With dead ends: 5656 [2022-02-10 02:53:49,730 INFO L226 Difference]: Without dead ends: 5652 [2022-02-10 02:53:49,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=1289, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:53:49,731 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 123 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:49,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 602 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:53:49,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2022-02-10 02:53:49,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 5558. [2022-02-10 02:53:49,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 5557 states have (on average 3.2262011876912005) internal successors, (17928), 5557 states have internal predecessors, (17928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 17928 transitions. [2022-02-10 02:53:49,857 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 17928 transitions. Word has length 25 [2022-02-10 02:53:49,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:49,857 INFO L470 AbstractCegarLoop]: Abstraction has 5558 states and 17928 transitions. [2022-02-10 02:53:49,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 34 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:49,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 17928 transitions. [2022-02-10 02:53:49,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:49,864 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:49,864 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:49,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (295)] Ended with exit code 0 [2022-02-10 02:53:50,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 295 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable298 [2022-02-10 02:53:50,064 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:50,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:50,065 INFO L85 PathProgramCache]: Analyzing trace with hash -385040145, now seen corresponding path program 294 times [2022-02-10 02:53:50,065 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:50,065 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531926073] [2022-02-10 02:53:50,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:50,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:50,247 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:50,247 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:50,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531926073] [2022-02-10 02:53:50,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531926073] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:50,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652083503] [2022-02-10 02:53:50,248 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:53:50,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:50,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:50,249 INFO L229 MonitoredProcess]: Starting monitored process 296 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:50,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (296)] Waiting until timeout for monitored process [2022-02-10 02:53:50,276 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:53:50,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:50,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:50,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:50,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:51,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652083503] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:51,030 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:51,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 16] total 36 [2022-02-10 02:53:51,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400059987] [2022-02-10 02:53:51,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:51,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:53:51,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:51,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:53:51,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:53:51,031 INFO L87 Difference]: Start difference. First operand 5558 states and 17928 transitions. Second operand has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 36 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:51,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:51,510 INFO L93 Difference]: Finished difference Result 5739 states and 18247 transitions. [2022-02-10 02:53:51,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:53:51,510 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 36 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:51,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:51,520 INFO L225 Difference]: With dead ends: 5739 [2022-02-10 02:53:51,520 INFO L226 Difference]: Without dead ends: 5733 [2022-02-10 02:53:51,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=136, Invalid=1424, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:53:51,520 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 164 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:51,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 621 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:53:51,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5733 states. [2022-02-10 02:53:51,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5733 to 5574. [2022-02-10 02:53:51,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 5573 states have (on average 3.2271666965727617) internal successors, (17985), 5573 states have internal predecessors, (17985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:51,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 17985 transitions. [2022-02-10 02:53:51,603 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 17985 transitions. Word has length 25 [2022-02-10 02:53:51,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:51,603 INFO L470 AbstractCegarLoop]: Abstraction has 5574 states and 17985 transitions. [2022-02-10 02:53:51,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 36 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:51,603 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 17985 transitions. [2022-02-10 02:53:51,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:51,610 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:51,610 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:51,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (296)] Forceful destruction successful, exit code 0 [2022-02-10 02:53:51,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 296 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable299 [2022-02-10 02:53:51,811 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:51,811 INFO L85 PathProgramCache]: Analyzing trace with hash 458968235, now seen corresponding path program 295 times [2022-02-10 02:53:51,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:51,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284705092] [2022-02-10 02:53:51,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:51,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:51,991 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:51,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284705092] [2022-02-10 02:53:51,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284705092] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:51,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386056434] [2022-02-10 02:53:51,991 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:53:51,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:51,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:51,993 INFO L229 MonitoredProcess]: Starting monitored process 297 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:51,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (297)] Waiting until timeout for monitored process [2022-02-10 02:53:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:52,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:52,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:52,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:52,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386056434] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:52,785 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:52,785 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 16] total 35 [2022-02-10 02:53:52,785 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822188165] [2022-02-10 02:53:52,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:52,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:53:52,786 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:52,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:53:52,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:53:52,786 INFO L87 Difference]: Start difference. First operand 5574 states and 17985 transitions. Second operand has 36 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:53,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:53,248 INFO L93 Difference]: Finished difference Result 5727 states and 18233 transitions. [2022-02-10 02:53:53,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:53:53,248 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:53,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:53,258 INFO L225 Difference]: With dead ends: 5727 [2022-02-10 02:53:53,258 INFO L226 Difference]: Without dead ends: 5722 [2022-02-10 02:53:53,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 22 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=1288, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:53:53,259 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 124 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:53,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 661 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:53:53,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5722 states. [2022-02-10 02:53:53,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5722 to 5574. [2022-02-10 02:53:53,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 5573 states have (on average 3.2271666965727617) internal successors, (17985), 5573 states have internal predecessors, (17985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:53,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 17985 transitions. [2022-02-10 02:53:53,342 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 17985 transitions. Word has length 25 [2022-02-10 02:53:53,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:53,342 INFO L470 AbstractCegarLoop]: Abstraction has 5574 states and 17985 transitions. [2022-02-10 02:53:53,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:53,342 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 17985 transitions. [2022-02-10 02:53:53,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:53,349 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:53,349 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:53,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (297)] Ended with exit code 0 [2022-02-10 02:53:53,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 297 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable300 [2022-02-10 02:53:53,549 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:53,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:53,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1915461995, now seen corresponding path program 296 times [2022-02-10 02:53:53,550 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:53,550 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437975896] [2022-02-10 02:53:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:53,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:53,731 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:53,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437975896] [2022-02-10 02:53:53,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437975896] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:53,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619110408] [2022-02-10 02:53:53,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:53:53,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:53,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:53,732 INFO L229 MonitoredProcess]: Starting monitored process 298 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:53,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (298)] Waiting until timeout for monitored process [2022-02-10 02:53:53,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:53:53,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:53,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:53,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:54,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:54,517 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:54,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619110408] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:54,518 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:54,518 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 16] total 34 [2022-02-10 02:53:54,518 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401563249] [2022-02-10 02:53:54,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:54,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:53:54,518 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:54,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:53:54,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:53:54,518 INFO L87 Difference]: Start difference. First operand 5574 states and 17985 transitions. Second operand has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:54,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:54,981 INFO L93 Difference]: Finished difference Result 5705 states and 18185 transitions. [2022-02-10 02:53:54,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:53:54,981 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:54,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:54,991 INFO L225 Difference]: With dead ends: 5705 [2022-02-10 02:53:54,991 INFO L226 Difference]: Without dead ends: 5698 [2022-02-10 02:53:54,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 21 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:53:54,992 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 128 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:54,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 562 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:53:54,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5698 states. [2022-02-10 02:53:55,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5698 to 5574. [2022-02-10 02:53:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 5573 states have (on average 3.2269872600035887) internal successors, (17984), 5573 states have internal predecessors, (17984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:55,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 17984 transitions. [2022-02-10 02:53:55,116 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 17984 transitions. Word has length 25 [2022-02-10 02:53:55,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:55,116 INFO L470 AbstractCegarLoop]: Abstraction has 5574 states and 17984 transitions. [2022-02-10 02:53:55,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:55,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 17984 transitions. [2022-02-10 02:53:55,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:55,123 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:55,123 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:55,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (298)] Forceful destruction successful, exit code 0 [2022-02-10 02:53:55,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 298 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable301 [2022-02-10 02:53:55,324 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:55,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:55,324 INFO L85 PathProgramCache]: Analyzing trace with hash 216584303, now seen corresponding path program 297 times [2022-02-10 02:53:55,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:55,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57653809] [2022-02-10 02:53:55,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:55,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:55,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:55,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57653809] [2022-02-10 02:53:55,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57653809] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:55,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331043553] [2022-02-10 02:53:55,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:53:55,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:55,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:55,512 INFO L229 MonitoredProcess]: Starting monitored process 299 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:55,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (299)] Waiting until timeout for monitored process [2022-02-10 02:53:55,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:53:55,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:55,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:55,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:55,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:56,279 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:56,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331043553] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:56,279 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:56,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 16] total 33 [2022-02-10 02:53:56,280 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947036432] [2022-02-10 02:53:56,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:56,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:53:56,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:56,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:53:56,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:53:56,280 INFO L87 Difference]: Start difference. First operand 5574 states and 17984 transitions. Second operand has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:56,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:56,772 INFO L93 Difference]: Finished difference Result 5670 states and 18108 transitions. [2022-02-10 02:53:56,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:53:56,772 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:56,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:56,782 INFO L225 Difference]: With dead ends: 5670 [2022-02-10 02:53:56,782 INFO L226 Difference]: Without dead ends: 5666 [2022-02-10 02:53:56,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 22 SyntacticMatches, 10 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=1288, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:53:56,782 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 116 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:56,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 610 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:53:56,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5666 states. [2022-02-10 02:53:56,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5666 to 5574. [2022-02-10 02:53:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 5573 states have (on average 3.2269872600035887) internal successors, (17984), 5573 states have internal predecessors, (17984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:56,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 17984 transitions. [2022-02-10 02:53:56,864 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 17984 transitions. Word has length 25 [2022-02-10 02:53:56,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:56,864 INFO L470 AbstractCegarLoop]: Abstraction has 5574 states and 17984 transitions. [2022-02-10 02:53:56,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:56,864 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 17984 transitions. [2022-02-10 02:53:56,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:56,871 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:56,871 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:56,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (299)] Ended with exit code 0 [2022-02-10 02:53:57,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302,299 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:57,072 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:57,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:57,072 INFO L85 PathProgramCache]: Analyzing trace with hash -385356313, now seen corresponding path program 298 times [2022-02-10 02:53:57,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:57,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878452450] [2022-02-10 02:53:57,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:57,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:57,258 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:57,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878452450] [2022-02-10 02:53:57,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878452450] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:57,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888463644] [2022-02-10 02:53:57,258 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:53:57,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:57,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:57,259 INFO L229 MonitoredProcess]: Starting monitored process 300 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:57,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (300)] Waiting until timeout for monitored process [2022-02-10 02:53:57,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:53:57,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:57,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:57,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:57,586 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:53:57,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:58,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888463644] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:58,040 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:58,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 16] total 33 [2022-02-10 02:53:58,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516244866] [2022-02-10 02:53:58,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:58,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:53:58,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:58,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:53:58,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:53:58,041 INFO L87 Difference]: Start difference. First operand 5574 states and 17984 transitions. Second operand has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:58,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:58,476 INFO L93 Difference]: Finished difference Result 5643 states and 18056 transitions. [2022-02-10 02:53:58,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:53:58,477 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:53:58,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:58,486 INFO L225 Difference]: With dead ends: 5643 [2022-02-10 02:53:58,486 INFO L226 Difference]: Without dead ends: 5639 [2022-02-10 02:53:58,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 22 SyntacticMatches, 10 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=1276, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:53:58,487 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 139 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:58,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 474 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:53:58,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2022-02-10 02:53:58,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 5569. [2022-02-10 02:53:58,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5569 states, 5568 states have (on average 3.227191091954023) internal successors, (17969), 5568 states have internal predecessors, (17969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:58,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5569 states to 5569 states and 17969 transitions. [2022-02-10 02:53:58,569 INFO L78 Accepts]: Start accepts. Automaton has 5569 states and 17969 transitions. Word has length 25 [2022-02-10 02:53:58,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:58,569 INFO L470 AbstractCegarLoop]: Abstraction has 5569 states and 17969 transitions. [2022-02-10 02:53:58,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:58,569 INFO L276 IsEmpty]: Start isEmpty. Operand 5569 states and 17969 transitions. [2022-02-10 02:53:58,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:53:58,576 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:58,576 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:58,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (300)] Ended with exit code 0 [2022-02-10 02:53:58,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303,300 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:58,777 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:58,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:58,777 INFO L85 PathProgramCache]: Analyzing trace with hash -101182481, now seen corresponding path program 299 times [2022-02-10 02:53:58,777 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:58,777 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316919724] [2022-02-10 02:53:58,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:58,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:58,958 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:58,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316919724] [2022-02-10 02:53:58,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316919724] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:58,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635824188] [2022-02-10 02:53:58,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:53:58,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:58,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:58,960 INFO L229 MonitoredProcess]: Starting monitored process 301 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:58,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (301)] Waiting until timeout for monitored process [2022-02-10 02:53:58,997 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:53:58,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:59,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:53:59,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:59,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:59,761 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:59,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635824188] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:59,762 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:59,762 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 36 [2022-02-10 02:53:59,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690792457] [2022-02-10 02:53:59,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:59,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:53:59,762 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:59,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:53:59,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:53:59,762 INFO L87 Difference]: Start difference. First operand 5569 states and 17969 transitions. Second operand has 37 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 36 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:00,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:00,247 INFO L93 Difference]: Finished difference Result 5798 states and 18384 transitions. [2022-02-10 02:54:00,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:54:00,247 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 36 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:00,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:00,258 INFO L225 Difference]: With dead ends: 5798 [2022-02-10 02:54:00,258 INFO L226 Difference]: Without dead ends: 5792 [2022-02-10 02:54:00,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=136, Invalid=1424, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:54:00,259 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 166 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:00,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 645 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:00,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5792 states. [2022-02-10 02:54:00,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5792 to 5592. [2022-02-10 02:54:00,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 5591 states have (on average 3.2287605079592203) internal successors, (18052), 5591 states have internal predecessors, (18052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:00,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 18052 transitions. [2022-02-10 02:54:00,384 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 18052 transitions. Word has length 25 [2022-02-10 02:54:00,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:00,385 INFO L470 AbstractCegarLoop]: Abstraction has 5592 states and 18052 transitions. [2022-02-10 02:54:00,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 36 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:00,385 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 18052 transitions. [2022-02-10 02:54:00,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:00,392 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:00,392 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:00,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (301)] Ended with exit code 0 [2022-02-10 02:54:00,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304,301 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:00,593 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:00,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:00,593 INFO L85 PathProgramCache]: Analyzing trace with hash 742825899, now seen corresponding path program 300 times [2022-02-10 02:54:00,593 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:00,593 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030770541] [2022-02-10 02:54:00,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:00,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:00,768 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:00,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030770541] [2022-02-10 02:54:00,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030770541] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:00,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226692958] [2022-02-10 02:54:00,769 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:54:00,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:00,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:00,770 INFO L229 MonitoredProcess]: Starting monitored process 302 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:00,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (302)] Waiting until timeout for monitored process [2022-02-10 02:54:00,798 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:54:00,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:00,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:00,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:01,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:01,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226692958] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:01,532 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:01,532 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 35 [2022-02-10 02:54:01,532 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71973342] [2022-02-10 02:54:01,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:01,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:54:01,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:01,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:54:01,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:54:01,533 INFO L87 Difference]: Start difference. First operand 5592 states and 18052 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:01,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:01,948 INFO L93 Difference]: Finished difference Result 5786 states and 18369 transitions. [2022-02-10 02:54:01,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:54:01,949 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:01,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:01,959 INFO L225 Difference]: With dead ends: 5786 [2022-02-10 02:54:01,960 INFO L226 Difference]: Without dead ends: 5781 [2022-02-10 02:54:01,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=1288, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:54:01,960 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 171 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:01,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 588 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:54:01,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5781 states. [2022-02-10 02:54:02,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5781 to 5592. [2022-02-10 02:54:02,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 5591 states have (on average 3.2287605079592203) internal successors, (18052), 5591 states have internal predecessors, (18052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:02,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 18052 transitions. [2022-02-10 02:54:02,053 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 18052 transitions. Word has length 25 [2022-02-10 02:54:02,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:02,053 INFO L470 AbstractCegarLoop]: Abstraction has 5592 states and 18052 transitions. [2022-02-10 02:54:02,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:02,053 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 18052 transitions. [2022-02-10 02:54:02,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:02,060 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:02,060 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:02,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (302)] Ended with exit code 0 [2022-02-10 02:54:02,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 302 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable305 [2022-02-10 02:54:02,261 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:02,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:02,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2095647637, now seen corresponding path program 301 times [2022-02-10 02:54:02,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:02,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177972472] [2022-02-10 02:54:02,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:02,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:02,441 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:02,442 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:02,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177972472] [2022-02-10 02:54:02,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177972472] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:02,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604226222] [2022-02-10 02:54:02,442 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:54:02,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:02,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:02,443 INFO L229 MonitoredProcess]: Starting monitored process 303 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:02,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (303)] Waiting until timeout for monitored process [2022-02-10 02:54:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:02,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:02,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:02,751 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:02,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:03,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604226222] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:03,237 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:03,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 34 [2022-02-10 02:54:03,237 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628467908] [2022-02-10 02:54:03,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:03,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:54:03,237 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:03,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:54:03,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:54:03,237 INFO L87 Difference]: Start difference. First operand 5592 states and 18052 transitions. Second operand has 35 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:03,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:03,705 INFO L93 Difference]: Finished difference Result 5775 states and 18336 transitions. [2022-02-10 02:54:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:54:03,705 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:03,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:03,715 INFO L225 Difference]: With dead ends: 5775 [2022-02-10 02:54:03,715 INFO L226 Difference]: Without dead ends: 5768 [2022-02-10 02:54:03,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:54:03,716 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 182 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:03,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 591 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:03,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5768 states. [2022-02-10 02:54:03,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5768 to 5592. [2022-02-10 02:54:03,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 5591 states have (on average 3.2285816490788766) internal successors, (18051), 5591 states have internal predecessors, (18051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 18051 transitions. [2022-02-10 02:54:03,797 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 18051 transitions. Word has length 25 [2022-02-10 02:54:03,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:03,797 INFO L470 AbstractCegarLoop]: Abstraction has 5592 states and 18051 transitions. [2022-02-10 02:54:03,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:03,797 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 18051 transitions. [2022-02-10 02:54:03,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:03,804 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:03,804 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:03,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (303)] Ended with exit code 0 [2022-02-10 02:54:04,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306,303 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:04,005 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:04,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:04,005 INFO L85 PathProgramCache]: Analyzing trace with hash 500441967, now seen corresponding path program 302 times [2022-02-10 02:54:04,005 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:04,005 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408497761] [2022-02-10 02:54:04,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:04,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:04,214 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:04,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408497761] [2022-02-10 02:54:04,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408497761] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:04,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412600728] [2022-02-10 02:54:04,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:54:04,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:04,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:04,215 INFO L229 MonitoredProcess]: Starting monitored process 304 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:04,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (304)] Waiting until timeout for monitored process [2022-02-10 02:54:04,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:54:04,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:04,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:04,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:04,525 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:04,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:04,966 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:04,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412600728] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:04,966 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:04,966 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 33 [2022-02-10 02:54:04,966 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170065256] [2022-02-10 02:54:04,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:04,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:54:04,967 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:04,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:54:04,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:54:04,967 INFO L87 Difference]: Start difference. First operand 5592 states and 18051 transitions. Second operand has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 33 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:05,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:05,493 INFO L93 Difference]: Finished difference Result 5736 states and 18251 transitions. [2022-02-10 02:54:05,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:54:05,493 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 33 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:05,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:05,503 INFO L225 Difference]: With dead ends: 5736 [2022-02-10 02:54:05,503 INFO L226 Difference]: Without dead ends: 5728 [2022-02-10 02:54:05,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=1355, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:54:05,503 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 136 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:05,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 588 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:05,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5728 states. [2022-02-10 02:54:05,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5728 to 5592. [2022-02-10 02:54:05,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 5591 states have (on average 3.2284027901985333) internal successors, (18050), 5591 states have internal predecessors, (18050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:05,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 18050 transitions. [2022-02-10 02:54:05,623 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 18050 transitions. Word has length 25 [2022-02-10 02:54:05,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:05,623 INFO L470 AbstractCegarLoop]: Abstraction has 5592 states and 18050 transitions. [2022-02-10 02:54:05,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 33 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:05,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 18050 transitions. [2022-02-10 02:54:05,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:05,630 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:05,630 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:05,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (304)] Ended with exit code 0 [2022-02-10 02:54:05,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307,304 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:05,830 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:05,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:05,831 INFO L85 PathProgramCache]: Analyzing trace with hash -625158933, now seen corresponding path program 303 times [2022-02-10 02:54:05,831 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:05,831 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926812739] [2022-02-10 02:54:05,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:05,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:06,024 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:06,024 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:06,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926812739] [2022-02-10 02:54:06,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926812739] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:06,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224341473] [2022-02-10 02:54:06,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:54:06,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:06,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:06,025 INFO L229 MonitoredProcess]: Starting monitored process 305 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:06,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (305)] Waiting until timeout for monitored process [2022-02-10 02:54:06,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:54:06,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:06,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:06,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:06,343 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:06,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:06,755 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:06,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224341473] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:06,755 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:06,756 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 32 [2022-02-10 02:54:06,756 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600712655] [2022-02-10 02:54:06,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:06,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 02:54:06,756 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:06,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 02:54:06,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:54:06,757 INFO L87 Difference]: Start difference. First operand 5592 states and 18050 transitions. Second operand has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:07,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:07,254 INFO L93 Difference]: Finished difference Result 5704 states and 18191 transitions. [2022-02-10 02:54:07,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:54:07,255 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:07,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:07,265 INFO L225 Difference]: With dead ends: 5704 [2022-02-10 02:54:07,265 INFO L226 Difference]: Without dead ends: 5700 [2022-02-10 02:54:07,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=1287, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:54:07,265 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 126 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:07,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 510 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:07,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2022-02-10 02:54:07,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5592. [2022-02-10 02:54:07,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 5591 states have (on average 3.2284027901985333) internal successors, (18050), 5591 states have internal predecessors, (18050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 18050 transitions. [2022-02-10 02:54:07,347 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 18050 transitions. Word has length 25 [2022-02-10 02:54:07,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:07,347 INFO L470 AbstractCegarLoop]: Abstraction has 5592 states and 18050 transitions. [2022-02-10 02:54:07,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:07,348 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 18050 transitions. [2022-02-10 02:54:07,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:07,355 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:07,355 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:07,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (305)] Ended with exit code 0 [2022-02-10 02:54:07,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 305 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable308 [2022-02-10 02:54:07,555 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:07,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:07,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1865646225, now seen corresponding path program 304 times [2022-02-10 02:54:07,555 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:07,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598968967] [2022-02-10 02:54:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:07,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:07,788 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:07,789 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:07,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598968967] [2022-02-10 02:54:07,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598968967] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:07,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078068811] [2022-02-10 02:54:07,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:54:07,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:07,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:07,790 INFO L229 MonitoredProcess]: Starting monitored process 306 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:07,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (306)] Waiting until timeout for monitored process [2022-02-10 02:54:07,820 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:54:07,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:07,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:07,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:54:08,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:08,569 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078068811] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:08,570 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:08,570 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 16] total 33 [2022-02-10 02:54:08,570 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94279419] [2022-02-10 02:54:08,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:08,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:54:08,570 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:08,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:54:08,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:54:08,570 INFO L87 Difference]: Start difference. First operand 5592 states and 18050 transitions. Second operand has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:09,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:09,065 INFO L93 Difference]: Finished difference Result 5714 states and 18180 transitions. [2022-02-10 02:54:09,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:54:09,065 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:09,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:09,075 INFO L225 Difference]: With dead ends: 5714 [2022-02-10 02:54:09,075 INFO L226 Difference]: Without dead ends: 5706 [2022-02-10 02:54:09,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 22 SyntacticMatches, 10 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=132, Invalid=1274, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:54:09,076 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 183 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:09,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 585 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:09,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5706 states. [2022-02-10 02:54:09,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5706 to 5586. [2022-02-10 02:54:09,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5586 states, 5585 states have (on average 3.2279319606087733) internal successors, (18028), 5585 states have internal predecessors, (18028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:09,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 18028 transitions. [2022-02-10 02:54:09,158 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 18028 transitions. Word has length 25 [2022-02-10 02:54:09,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:09,158 INFO L470 AbstractCegarLoop]: Abstraction has 5586 states and 18028 transitions. [2022-02-10 02:54:09,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:09,158 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 18028 transitions. [2022-02-10 02:54:09,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:09,166 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:09,166 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:09,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (306)] Ended with exit code 0 [2022-02-10 02:54:09,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 306 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable309 [2022-02-10 02:54:09,366 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:09,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:09,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2105448845, now seen corresponding path program 305 times [2022-02-10 02:54:09,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:09,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831308664] [2022-02-10 02:54:09,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:09,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:09,558 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:09,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831308664] [2022-02-10 02:54:09,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831308664] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:09,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678591256] [2022-02-10 02:54:09,558 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:54:09,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:09,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:09,559 INFO L229 MonitoredProcess]: Starting monitored process 307 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:09,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (307)] Waiting until timeout for monitored process [2022-02-10 02:54:09,586 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:54:09,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:09,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:09,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:54:09,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:10,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678591256] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:10,287 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:10,287 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 32 [2022-02-10 02:54:10,288 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937624535] [2022-02-10 02:54:10,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:10,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 02:54:10,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:10,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 02:54:10,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:54:10,288 INFO L87 Difference]: Start difference. First operand 5586 states and 18028 transitions. Second operand has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:10,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:10,738 INFO L93 Difference]: Finished difference Result 5666 states and 18112 transitions. [2022-02-10 02:54:10,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:54:10,738 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:10,749 INFO L225 Difference]: With dead ends: 5666 [2022-02-10 02:54:10,749 INFO L226 Difference]: Without dead ends: 5662 [2022-02-10 02:54:10,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=1275, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:54:10,749 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 119 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:10,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 452 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:54:10,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5662 states. [2022-02-10 02:54:10,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5662 to 5580. [2022-02-10 02:54:10,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5580 states, 5579 states have (on average 3.228177092668937) internal successors, (18010), 5579 states have internal predecessors, (18010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:10,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5580 states to 5580 states and 18010 transitions. [2022-02-10 02:54:10,866 INFO L78 Accepts]: Start accepts. Automaton has 5580 states and 18010 transitions. Word has length 25 [2022-02-10 02:54:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:10,866 INFO L470 AbstractCegarLoop]: Abstraction has 5580 states and 18010 transitions. [2022-02-10 02:54:10,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:10,867 INFO L276 IsEmpty]: Start isEmpty. Operand 5580 states and 18010 transitions. [2022-02-10 02:54:10,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:10,874 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:10,874 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:10,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (307)] Ended with exit code 0 [2022-02-10 02:54:11,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 307 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable310 [2022-02-10 02:54:11,075 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:11,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:11,075 INFO L85 PathProgramCache]: Analyzing trace with hash 108470511, now seen corresponding path program 306 times [2022-02-10 02:54:11,075 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:11,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125285640] [2022-02-10 02:54:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:11,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:11,253 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:11,253 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:11,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125285640] [2022-02-10 02:54:11,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125285640] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:11,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743690304] [2022-02-10 02:54:11,254 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:54:11,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:11,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:11,255 INFO L229 MonitoredProcess]: Starting monitored process 308 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:11,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (308)] Waiting until timeout for monitored process [2022-02-10 02:54:11,282 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:54:11,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:11,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:11,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:11,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:11,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743690304] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:11,998 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:11,998 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 36 [2022-02-10 02:54:11,998 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913809387] [2022-02-10 02:54:11,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:11,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:54:11,998 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:11,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:54:11,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:54:11,999 INFO L87 Difference]: Start difference. First operand 5580 states and 18010 transitions. Second operand has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:12,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:12,422 INFO L93 Difference]: Finished difference Result 5855 states and 18506 transitions. [2022-02-10 02:54:12,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:54:12,422 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:12,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:12,431 INFO L225 Difference]: With dead ends: 5855 [2022-02-10 02:54:12,432 INFO L226 Difference]: Without dead ends: 5849 [2022-02-10 02:54:12,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=1424, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:54:12,432 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 254 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:12,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 589 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:54:12,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5849 states. [2022-02-10 02:54:12,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5849 to 5615. [2022-02-10 02:54:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5614 states have (on average 3.230495190594941) internal successors, (18136), 5614 states have internal predecessors, (18136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:12,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 18136 transitions. [2022-02-10 02:54:12,517 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 18136 transitions. Word has length 25 [2022-02-10 02:54:12,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:12,517 INFO L470 AbstractCegarLoop]: Abstraction has 5615 states and 18136 transitions. [2022-02-10 02:54:12,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:12,517 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 18136 transitions. [2022-02-10 02:54:12,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:12,525 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:12,525 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:12,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (308)] Ended with exit code 0 [2022-02-10 02:54:12,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 308 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable311 [2022-02-10 02:54:12,725 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:12,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:12,726 INFO L85 PathProgramCache]: Analyzing trace with hash 952478891, now seen corresponding path program 307 times [2022-02-10 02:54:12,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:12,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37964862] [2022-02-10 02:54:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:12,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:12,900 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:12,900 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:12,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37964862] [2022-02-10 02:54:12,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37964862] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:12,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331025170] [2022-02-10 02:54:12,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:54:12,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:12,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:12,902 INFO L229 MonitoredProcess]: Starting monitored process 309 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:12,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (309)] Waiting until timeout for monitored process [2022-02-10 02:54:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:12,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:12,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:13,177 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:13,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:13,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331025170] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:13,654 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:13,654 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 35 [2022-02-10 02:54:13,654 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828767487] [2022-02-10 02:54:13,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:13,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:54:13,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:13,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:54:13,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:54:13,654 INFO L87 Difference]: Start difference. First operand 5615 states and 18136 transitions. Second operand has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:14,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:14,085 INFO L93 Difference]: Finished difference Result 5843 states and 18489 transitions. [2022-02-10 02:54:14,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:54:14,085 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:14,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:14,094 INFO L225 Difference]: With dead ends: 5843 [2022-02-10 02:54:14,095 INFO L226 Difference]: Without dead ends: 5838 [2022-02-10 02:54:14,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=1288, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:54:14,095 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 185 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:14,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 660 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:14,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2022-02-10 02:54:14,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 5615. [2022-02-10 02:54:14,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5614 states have (on average 3.230495190594941) internal successors, (18136), 5614 states have internal predecessors, (18136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:14,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 18136 transitions. [2022-02-10 02:54:14,179 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 18136 transitions. Word has length 25 [2022-02-10 02:54:14,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:14,179 INFO L470 AbstractCegarLoop]: Abstraction has 5615 states and 18136 transitions. [2022-02-10 02:54:14,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:14,179 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 18136 transitions. [2022-02-10 02:54:14,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:14,186 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:14,186 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:14,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (309)] Ended with exit code 0 [2022-02-10 02:54:14,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 309 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable312 [2022-02-10 02:54:14,387 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:14,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:14,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1885994645, now seen corresponding path program 308 times [2022-02-10 02:54:14,387 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:14,387 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154744676] [2022-02-10 02:54:14,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:14,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:14,571 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:14,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154744676] [2022-02-10 02:54:14,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154744676] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:14,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024791998] [2022-02-10 02:54:14,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:54:14,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:14,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:14,572 INFO L229 MonitoredProcess]: Starting monitored process 310 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:14,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (310)] Waiting until timeout for monitored process [2022-02-10 02:54:14,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:54:14,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:14,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:14,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:14,864 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:14,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:15,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024791998] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:15,318 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:15,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 34 [2022-02-10 02:54:15,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605018892] [2022-02-10 02:54:15,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:15,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:54:15,319 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:15,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:54:15,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:54:15,319 INFO L87 Difference]: Start difference. First operand 5615 states and 18136 transitions. Second operand has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:15,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:15,817 INFO L93 Difference]: Finished difference Result 5838 states and 18468 transitions. [2022-02-10 02:54:15,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:54:15,817 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:15,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:15,828 INFO L225 Difference]: With dead ends: 5838 [2022-02-10 02:54:15,828 INFO L226 Difference]: Without dead ends: 5831 [2022-02-10 02:54:15,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:54:15,829 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 172 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:15,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 668 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:15,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5831 states. [2022-02-10 02:54:15,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5831 to 5615. [2022-02-10 02:54:15,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5614 states have (on average 3.230317064481653) internal successors, (18135), 5614 states have internal predecessors, (18135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 18135 transitions. [2022-02-10 02:54:15,948 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 18135 transitions. Word has length 25 [2022-02-10 02:54:15,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:15,948 INFO L470 AbstractCegarLoop]: Abstraction has 5615 states and 18135 transitions. [2022-02-10 02:54:15,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:15,948 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 18135 transitions. [2022-02-10 02:54:15,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:15,955 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:15,955 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:15,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (310)] Ended with exit code 0 [2022-02-10 02:54:16,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313,310 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:16,156 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:16,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:16,156 INFO L85 PathProgramCache]: Analyzing trace with hash 710094959, now seen corresponding path program 309 times [2022-02-10 02:54:16,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:16,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679742085] [2022-02-10 02:54:16,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:16,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:16,338 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:16,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679742085] [2022-02-10 02:54:16,338 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679742085] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:16,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764493360] [2022-02-10 02:54:16,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:54:16,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:16,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:16,339 INFO L229 MonitoredProcess]: Starting monitored process 311 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:16,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (311)] Waiting until timeout for monitored process [2022-02-10 02:54:16,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:54:16,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:16,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:16,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:16,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:17,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764493360] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:17,074 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:17,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 33 [2022-02-10 02:54:17,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656933987] [2022-02-10 02:54:17,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:17,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:54:17,075 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:17,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:54:17,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:54:17,075 INFO L87 Difference]: Start difference. First operand 5615 states and 18135 transitions. Second operand has 34 states, 34 states have (on average 1.588235294117647) internal successors, (54), 33 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:17,627 INFO L93 Difference]: Finished difference Result 5820 states and 18411 transitions. [2022-02-10 02:54:17,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:54:17,627 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.588235294117647) internal successors, (54), 33 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:17,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:17,637 INFO L225 Difference]: With dead ends: 5820 [2022-02-10 02:54:17,638 INFO L226 Difference]: Without dead ends: 5812 [2022-02-10 02:54:17,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1355, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:54:17,638 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 182 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:17,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 650 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:17,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2022-02-10 02:54:17,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 5615. [2022-02-10 02:54:17,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5614 states have (on average 3.230138938368365) internal successors, (18134), 5614 states have internal predecessors, (18134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:17,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 18134 transitions. [2022-02-10 02:54:17,722 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 18134 transitions. Word has length 25 [2022-02-10 02:54:17,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:17,723 INFO L470 AbstractCegarLoop]: Abstraction has 5615 states and 18134 transitions. [2022-02-10 02:54:17,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.588235294117647) internal successors, (54), 33 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:17,723 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 18134 transitions. [2022-02-10 02:54:17,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:17,730 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:17,730 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:17,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (311)] Ended with exit code 0 [2022-02-10 02:54:17,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314,311 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:17,930 INFO L402 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:17,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:17,931 INFO L85 PathProgramCache]: Analyzing trace with hash -415505941, now seen corresponding path program 310 times [2022-02-10 02:54:17,931 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:17,931 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807336403] [2022-02-10 02:54:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:17,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:18,124 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:18,124 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807336403] [2022-02-10 02:54:18,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807336403] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:18,124 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465220865] [2022-02-10 02:54:18,124 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:54:18,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:18,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:18,125 INFO L229 MonitoredProcess]: Starting monitored process 312 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:18,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (312)] Waiting until timeout for monitored process [2022-02-10 02:54:18,151 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:54:18,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:18,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:18,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:18,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:18,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465220865] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:18,851 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:18,852 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 32 [2022-02-10 02:54:18,852 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383401884] [2022-02-10 02:54:18,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:18,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 02:54:18,852 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:18,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 02:54:18,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:54:18,852 INFO L87 Difference]: Start difference. First operand 5615 states and 18134 transitions. Second operand has 33 states, 33 states have (on average 1.606060606060606) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:19,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:19,457 INFO L93 Difference]: Finished difference Result 5778 states and 18343 transitions. [2022-02-10 02:54:19,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:54:19,457 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.606060606060606) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:19,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:19,467 INFO L225 Difference]: With dead ends: 5778 [2022-02-10 02:54:19,467 INFO L226 Difference]: Without dead ends: 5769 [2022-02-10 02:54:19,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 25 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=1354, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:54:19,468 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 152 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:19,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 650 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:54:19,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5769 states. [2022-02-10 02:54:19,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5769 to 5615. [2022-02-10 02:54:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5614 states have (on average 3.2299608122550767) internal successors, (18133), 5614 states have internal predecessors, (18133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:19,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 18133 transitions. [2022-02-10 02:54:19,549 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 18133 transitions. Word has length 25 [2022-02-10 02:54:19,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:19,549 INFO L470 AbstractCegarLoop]: Abstraction has 5615 states and 18133 transitions. [2022-02-10 02:54:19,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.606060606060606) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:19,549 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 18133 transitions. [2022-02-10 02:54:19,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:19,556 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:19,556 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:19,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (312)] Forceful destruction successful, exit code 0 [2022-02-10 02:54:19,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 312 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable315 [2022-02-10 02:54:19,757 INFO L402 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:19,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:19,757 INFO L85 PathProgramCache]: Analyzing trace with hash -949395473, now seen corresponding path program 311 times [2022-02-10 02:54:19,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:19,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732885397] [2022-02-10 02:54:19,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:19,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:19,949 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:19,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732885397] [2022-02-10 02:54:19,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732885397] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:19,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602270211] [2022-02-10 02:54:19,949 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:54:19,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:19,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:19,950 INFO L229 MonitoredProcess]: Starting monitored process 313 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:19,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (313)] Waiting until timeout for monitored process [2022-02-10 02:54:19,977 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:54:19,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:19,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:19,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:20,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:20,644 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:20,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602270211] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:20,645 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:20,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 31 [2022-02-10 02:54:20,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390525350] [2022-02-10 02:54:20,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:20,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:54:20,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:20,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:54:20,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:54:20,646 INFO L87 Difference]: Start difference. First operand 5615 states and 18133 transitions. Second operand has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:21,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:21,226 INFO L93 Difference]: Finished difference Result 5747 states and 18290 transitions. [2022-02-10 02:54:21,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:54:21,227 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:21,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:21,237 INFO L225 Difference]: With dead ends: 5747 [2022-02-10 02:54:21,237 INFO L226 Difference]: Without dead ends: 5743 [2022-02-10 02:54:21,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=1286, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:54:21,237 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 134 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:21,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 597 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:21,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5743 states. [2022-02-10 02:54:21,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5743 to 5615. [2022-02-10 02:54:21,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5614 states have (on average 3.2299608122550767) internal successors, (18133), 5614 states have internal predecessors, (18133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:21,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 18133 transitions. [2022-02-10 02:54:21,342 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 18133 transitions. Word has length 25 [2022-02-10 02:54:21,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:21,342 INFO L470 AbstractCegarLoop]: Abstraction has 5615 states and 18133 transitions. [2022-02-10 02:54:21,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:21,342 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 18133 transitions. [2022-02-10 02:54:21,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:21,350 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:21,350 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:21,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (313)] Ended with exit code 0 [2022-02-10 02:54:21,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316,313 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:21,550 INFO L402 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:21,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:21,551 INFO L85 PathProgramCache]: Analyzing trace with hash -509993241, now seen corresponding path program 312 times [2022-02-10 02:54:21,551 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:21,551 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91551429] [2022-02-10 02:54:21,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:21,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:21,731 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:21,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:21,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91551429] [2022-02-10 02:54:21,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91551429] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:21,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653978885] [2022-02-10 02:54:21,732 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:54:21,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:21,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:21,733 INFO L229 MonitoredProcess]: Starting monitored process 314 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:21,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (314)] Waiting until timeout for monitored process [2022-02-10 02:54:21,759 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:54:21,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:21,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:21,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:54:22,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:22,485 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:22,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653978885] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:22,486 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:22,486 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 16] total 33 [2022-02-10 02:54:22,486 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943742781] [2022-02-10 02:54:22,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:22,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:54:22,486 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:22,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:54:22,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:54:22,487 INFO L87 Difference]: Start difference. First operand 5615 states and 18133 transitions. Second operand has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:22,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:22,927 INFO L93 Difference]: Finished difference Result 5775 states and 18306 transitions. [2022-02-10 02:54:22,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:54:22,927 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:22,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:22,936 INFO L225 Difference]: With dead ends: 5775 [2022-02-10 02:54:22,936 INFO L226 Difference]: Without dead ends: 5767 [2022-02-10 02:54:22,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 22 SyntacticMatches, 10 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=132, Invalid=1274, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:54:22,937 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 201 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:22,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 519 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:54:22,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5767 states. [2022-02-10 02:54:23,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5767 to 5606. [2022-02-10 02:54:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5606 states, 5605 states have (on average 3.2290811775200714) internal successors, (18099), 5605 states have internal predecessors, (18099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:23,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 18099 transitions. [2022-02-10 02:54:23,015 INFO L78 Accepts]: Start accepts. Automaton has 5606 states and 18099 transitions. Word has length 25 [2022-02-10 02:54:23,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:23,015 INFO L470 AbstractCegarLoop]: Abstraction has 5606 states and 18099 transitions. [2022-02-10 02:54:23,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:23,015 INFO L276 IsEmpty]: Start isEmpty. Operand 5606 states and 18099 transitions. [2022-02-10 02:54:23,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:23,022 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:23,022 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:23,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (314)] Ended with exit code 0 [2022-02-10 02:54:23,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317,314 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:23,222 INFO L402 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:23,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:23,223 INFO L85 PathProgramCache]: Analyzing trace with hash -749795861, now seen corresponding path program 313 times [2022-02-10 02:54:23,223 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:23,223 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598426719] [2022-02-10 02:54:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:23,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:23,418 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:23,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598426719] [2022-02-10 02:54:23,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598426719] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:23,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324404099] [2022-02-10 02:54:23,419 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:54:23,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:23,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:23,420 INFO L229 MonitoredProcess]: Starting monitored process 315 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:23,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (315)] Waiting until timeout for monitored process [2022-02-10 02:54:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:23,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:23,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:23,741 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:54:23,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:24,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324404099] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:24,170 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:24,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 32 [2022-02-10 02:54:24,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373276611] [2022-02-10 02:54:24,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:24,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 02:54:24,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:24,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 02:54:24,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:54:24,170 INFO L87 Difference]: Start difference. First operand 5606 states and 18099 transitions. Second operand has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:24,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:24,619 INFO L93 Difference]: Finished difference Result 5765 states and 18269 transitions. [2022-02-10 02:54:24,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:54:24,619 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:24,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:24,630 INFO L225 Difference]: With dead ends: 5765 [2022-02-10 02:54:24,630 INFO L226 Difference]: Without dead ends: 5756 [2022-02-10 02:54:24,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=1273, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:54:24,630 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 232 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:24,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 440 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:54:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5756 states. [2022-02-10 02:54:24,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5756 to 5598. [2022-02-10 02:54:24,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5598 states, 5597 states have (on average 3.2286939431838486) internal successors, (18071), 5597 states have internal predecessors, (18071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:24,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5598 states to 5598 states and 18071 transitions. [2022-02-10 02:54:24,717 INFO L78 Accepts]: Start accepts. Automaton has 5598 states and 18071 transitions. Word has length 25 [2022-02-10 02:54:24,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:24,717 INFO L470 AbstractCegarLoop]: Abstraction has 5598 states and 18071 transitions. [2022-02-10 02:54:24,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:24,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5598 states and 18071 transitions. [2022-02-10 02:54:24,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:24,724 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:24,724 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:24,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (315)] Ended with exit code 0 [2022-02-10 02:54:24,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 315 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable318 [2022-02-10 02:54:24,925 INFO L402 AbstractCegarLoop]: === Iteration 320 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:24,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:24,925 INFO L85 PathProgramCache]: Analyzing trace with hash 406257511, now seen corresponding path program 314 times [2022-02-10 02:54:24,925 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:24,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093313601] [2022-02-10 02:54:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:24,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:25,165 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:25,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:25,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093313601] [2022-02-10 02:54:25,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093313601] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:25,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459189027] [2022-02-10 02:54:25,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:54:25,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:25,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:25,168 INFO L229 MonitoredProcess]: Starting monitored process 316 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:25,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (316)] Waiting until timeout for monitored process [2022-02-10 02:54:25,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:54:25,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:25,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:25,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:25,519 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:54:25,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:25,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459189027] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:25,910 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:25,910 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 31 [2022-02-10 02:54:25,910 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873553305] [2022-02-10 02:54:25,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:25,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:54:25,910 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:25,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:54:25,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=905, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:54:25,911 INFO L87 Difference]: Start difference. First operand 5598 states and 18071 transitions. Second operand has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:26,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:26,394 INFO L93 Difference]: Finished difference Result 5695 states and 18173 transitions. [2022-02-10 02:54:26,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:54:26,395 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:26,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:26,405 INFO L225 Difference]: With dead ends: 5695 [2022-02-10 02:54:26,405 INFO L226 Difference]: Without dead ends: 5691 [2022-02-10 02:54:26,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=132, Invalid=1274, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:54:26,405 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 129 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:26,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 459 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:54:26,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5691 states. [2022-02-10 02:54:26,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5691 to 5590. [2022-02-10 02:54:26,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 5589 states have (on average 3.229021291823224) internal successors, (18047), 5589 states have internal predecessors, (18047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 18047 transitions. [2022-02-10 02:54:26,513 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 18047 transitions. Word has length 25 [2022-02-10 02:54:26,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:26,513 INFO L470 AbstractCegarLoop]: Abstraction has 5590 states and 18047 transitions. [2022-02-10 02:54:26,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:26,513 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 18047 transitions. [2022-02-10 02:54:26,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:26,520 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:26,520 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:26,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (316)] Ended with exit code 0 [2022-02-10 02:54:26,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319,316 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:26,720 INFO L402 AbstractCegarLoop]: === Iteration 321 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:26,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:26,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1982221329, now seen corresponding path program 315 times [2022-02-10 02:54:26,721 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:26,721 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192053667] [2022-02-10 02:54:26,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:26,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:26,896 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:26,896 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:26,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192053667] [2022-02-10 02:54:26,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192053667] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:26,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554219107] [2022-02-10 02:54:26,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:54:26,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:26,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:26,897 INFO L229 MonitoredProcess]: Starting monitored process 317 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:26,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (317)] Waiting until timeout for monitored process [2022-02-10 02:54:26,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:54:26,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:26,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:26,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:27,171 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:27,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:27,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554219107] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:27,631 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:27,631 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 36 [2022-02-10 02:54:27,631 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253229786] [2022-02-10 02:54:27,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:27,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:54:27,631 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:27,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:54:27,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:54:27,632 INFO L87 Difference]: Start difference. First operand 5590 states and 18047 transitions. Second operand has 37 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:28,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:28,119 INFO L93 Difference]: Finished difference Result 5938 states and 18700 transitions. [2022-02-10 02:54:28,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:54:28,119 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:28,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:28,129 INFO L225 Difference]: With dead ends: 5938 [2022-02-10 02:54:28,129 INFO L226 Difference]: Without dead ends: 5932 [2022-02-10 02:54:28,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=1424, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:54:28,129 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 178 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:28,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 730 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:28,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5932 states. [2022-02-10 02:54:28,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5932 to 5647. [2022-02-10 02:54:28,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5647 states, 5646 states have (on average 3.2320226709174635) internal successors, (18248), 5646 states have internal predecessors, (18248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:28,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5647 states to 5647 states and 18248 transitions. [2022-02-10 02:54:28,208 INFO L78 Accepts]: Start accepts. Automaton has 5647 states and 18248 transitions. Word has length 25 [2022-02-10 02:54:28,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:28,208 INFO L470 AbstractCegarLoop]: Abstraction has 5647 states and 18248 transitions. [2022-02-10 02:54:28,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:28,208 INFO L276 IsEmpty]: Start isEmpty. Operand 5647 states and 18248 transitions. [2022-02-10 02:54:28,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:28,215 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:28,215 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:28,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (317)] Ended with exit code 0 [2022-02-10 02:54:28,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320,317 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:28,416 INFO L402 AbstractCegarLoop]: === Iteration 322 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:28,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:28,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1138212949, now seen corresponding path program 316 times [2022-02-10 02:54:28,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:28,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368822430] [2022-02-10 02:54:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:28,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:28,588 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:28,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368822430] [2022-02-10 02:54:28,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368822430] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:28,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32060741] [2022-02-10 02:54:28,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:54:28,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:28,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:28,589 INFO L229 MonitoredProcess]: Starting monitored process 318 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:28,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (318)] Waiting until timeout for monitored process [2022-02-10 02:54:28,623 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:54:28,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:28,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:28,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:28,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:29,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32060741] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:29,331 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:29,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 35 [2022-02-10 02:54:29,331 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915389984] [2022-02-10 02:54:29,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:29,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:54:29,331 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:29,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:54:29,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:54:29,332 INFO L87 Difference]: Start difference. First operand 5647 states and 18248 transitions. Second operand has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:29,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:29,786 INFO L93 Difference]: Finished difference Result 5928 states and 18683 transitions. [2022-02-10 02:54:29,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:54:29,786 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:29,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:29,796 INFO L225 Difference]: With dead ends: 5928 [2022-02-10 02:54:29,796 INFO L226 Difference]: Without dead ends: 5923 [2022-02-10 02:54:29,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=1288, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:54:29,797 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 235 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:29,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 692 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:29,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5923 states. [2022-02-10 02:54:29,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5923 to 5647. [2022-02-10 02:54:29,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5647 states, 5646 states have (on average 3.2320226709174635) internal successors, (18248), 5646 states have internal predecessors, (18248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:29,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5647 states to 5647 states and 18248 transitions. [2022-02-10 02:54:29,879 INFO L78 Accepts]: Start accepts. Automaton has 5647 states and 18248 transitions. Word has length 25 [2022-02-10 02:54:29,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:29,879 INFO L470 AbstractCegarLoop]: Abstraction has 5647 states and 18248 transitions. [2022-02-10 02:54:29,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:29,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5647 states and 18248 transitions. [2022-02-10 02:54:29,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:29,887 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:29,887 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:29,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (318)] Ended with exit code 0 [2022-02-10 02:54:30,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321,318 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:30,087 INFO L402 AbstractCegarLoop]: === Iteration 323 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:30,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:30,087 INFO L85 PathProgramCache]: Analyzing trace with hash 318280811, now seen corresponding path program 317 times [2022-02-10 02:54:30,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:30,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563533664] [2022-02-10 02:54:30,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:30,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:30,292 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:30,292 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:30,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563533664] [2022-02-10 02:54:30,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563533664] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:30,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041383825] [2022-02-10 02:54:30,292 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:54:30,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:30,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:30,293 INFO L229 MonitoredProcess]: Starting monitored process 319 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:30,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (319)] Waiting until timeout for monitored process [2022-02-10 02:54:30,321 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:54:30,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:30,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:30,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:30,569 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:30,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:31,020 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:31,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041383825] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:31,020 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:31,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 34 [2022-02-10 02:54:31,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317876485] [2022-02-10 02:54:31,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:31,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:54:31,020 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:31,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:54:31,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:54:31,021 INFO L87 Difference]: Start difference. First operand 5647 states and 18248 transitions. Second operand has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:31,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:31,551 INFO L93 Difference]: Finished difference Result 5928 states and 18673 transitions. [2022-02-10 02:54:31,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:54:31,551 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:31,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:31,562 INFO L225 Difference]: With dead ends: 5928 [2022-02-10 02:54:31,563 INFO L226 Difference]: Without dead ends: 5921 [2022-02-10 02:54:31,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:54:31,563 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 206 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:31,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 725 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:31,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5921 states. [2022-02-10 02:54:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5921 to 5647. [2022-02-10 02:54:31,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5647 states, 5646 states have (on average 3.2318455543747784) internal successors, (18247), 5646 states have internal predecessors, (18247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:31,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5647 states to 5647 states and 18247 transitions. [2022-02-10 02:54:31,683 INFO L78 Accepts]: Start accepts. Automaton has 5647 states and 18247 transitions. Word has length 25 [2022-02-10 02:54:31,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:31,683 INFO L470 AbstractCegarLoop]: Abstraction has 5647 states and 18247 transitions. [2022-02-10 02:54:31,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:31,683 INFO L276 IsEmpty]: Start isEmpty. Operand 5647 states and 18247 transitions. [2022-02-10 02:54:31,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:31,690 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:31,690 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:31,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (319)] Ended with exit code 0 [2022-02-10 02:54:31,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 319 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable322 [2022-02-10 02:54:31,891 INFO L402 AbstractCegarLoop]: === Iteration 324 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:31,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:31,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1380596881, now seen corresponding path program 318 times [2022-02-10 02:54:31,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:31,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316905088] [2022-02-10 02:54:31,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:31,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:32,073 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:32,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316905088] [2022-02-10 02:54:32,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316905088] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:32,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982247373] [2022-02-10 02:54:32,073 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:54:32,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:32,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:32,074 INFO L229 MonitoredProcess]: Starting monitored process 320 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:32,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (320)] Waiting until timeout for monitored process [2022-02-10 02:54:32,101 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:54:32,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:32,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:32,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:32,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:32,783 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:32,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982247373] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:32,783 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:32,783 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 33 [2022-02-10 02:54:32,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564418873] [2022-02-10 02:54:32,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:32,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:54:32,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:32,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:54:32,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:54:32,784 INFO L87 Difference]: Start difference. First operand 5647 states and 18247 transitions. Second operand has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:33,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:33,324 INFO L93 Difference]: Finished difference Result 5923 states and 18642 transitions. [2022-02-10 02:54:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:54:33,324 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:33,335 INFO L225 Difference]: With dead ends: 5923 [2022-02-10 02:54:33,336 INFO L226 Difference]: Without dead ends: 5915 [2022-02-10 02:54:33,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1355, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:54:33,336 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 184 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:33,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 643 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:33,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5915 states. [2022-02-10 02:54:33,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5915 to 5647. [2022-02-10 02:54:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5647 states, 5646 states have (on average 3.2316684378320937) internal successors, (18246), 5646 states have internal predecessors, (18246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:33,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5647 states to 5647 states and 18246 transitions. [2022-02-10 02:54:33,423 INFO L78 Accepts]: Start accepts. Automaton has 5647 states and 18246 transitions. Word has length 25 [2022-02-10 02:54:33,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:33,423 INFO L470 AbstractCegarLoop]: Abstraction has 5647 states and 18246 transitions. [2022-02-10 02:54:33,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:33,423 INFO L276 IsEmpty]: Start isEmpty. Operand 5647 states and 18246 transitions. [2022-02-10 02:54:33,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:33,431 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:33,431 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:33,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (320)] Ended with exit code 0 [2022-02-10 02:54:33,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 320 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable323 [2022-02-10 02:54:33,632 INFO L402 AbstractCegarLoop]: === Iteration 325 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:33,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:33,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1788769515, now seen corresponding path program 319 times [2022-02-10 02:54:33,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:33,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179666870] [2022-02-10 02:54:33,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:33,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:33,823 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:33,824 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:33,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179666870] [2022-02-10 02:54:33,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179666870] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:33,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378577370] [2022-02-10 02:54:33,824 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:54:33,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:33,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:33,825 INFO L229 MonitoredProcess]: Starting monitored process 321 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:33,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (321)] Waiting until timeout for monitored process [2022-02-10 02:54:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:33,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:33,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:34,110 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:34,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:34,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378577370] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:34,538 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:34,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 32 [2022-02-10 02:54:34,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428025001] [2022-02-10 02:54:34,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:34,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 02:54:34,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:34,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 02:54:34,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:54:34,538 INFO L87 Difference]: Start difference. First operand 5647 states and 18246 transitions. Second operand has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 32 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:35,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:35,105 INFO L93 Difference]: Finished difference Result 5904 states and 18590 transitions. [2022-02-10 02:54:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:54:35,106 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 32 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:35,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:35,115 INFO L225 Difference]: With dead ends: 5904 [2022-02-10 02:54:35,115 INFO L226 Difference]: Without dead ends: 5895 [2022-02-10 02:54:35,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=1354, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:54:35,116 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 216 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:35,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 601 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:35,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5895 states. [2022-02-10 02:54:35,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5895 to 5647. [2022-02-10 02:54:35,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5647 states, 5646 states have (on average 3.2314913212894085) internal successors, (18245), 5646 states have internal predecessors, (18245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5647 states to 5647 states and 18245 transitions. [2022-02-10 02:54:35,199 INFO L78 Accepts]: Start accepts. Automaton has 5647 states and 18245 transitions. Word has length 25 [2022-02-10 02:54:35,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:35,199 INFO L470 AbstractCegarLoop]: Abstraction has 5647 states and 18245 transitions. [2022-02-10 02:54:35,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 32 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:35,199 INFO L276 IsEmpty]: Start isEmpty. Operand 5647 states and 18245 transitions. [2022-02-10 02:54:35,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:35,206 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:35,206 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:35,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (321)] Ended with exit code 0 [2022-02-10 02:54:35,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 321 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable324 [2022-02-10 02:54:35,406 INFO L402 AbstractCegarLoop]: === Iteration 326 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:35,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:35,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1254879983, now seen corresponding path program 320 times [2022-02-10 02:54:35,407 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:35,407 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762510510] [2022-02-10 02:54:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:35,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:35,605 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:35,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762510510] [2022-02-10 02:54:35,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762510510] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:35,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911662660] [2022-02-10 02:54:35,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:54:35,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:35,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:35,606 INFO L229 MonitoredProcess]: Starting monitored process 322 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:35,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (322)] Waiting until timeout for monitored process [2022-02-10 02:54:35,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:54:35,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:35,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:35,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:35,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:36,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911662660] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:36,277 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:36,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 31 [2022-02-10 02:54:36,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959261592] [2022-02-10 02:54:36,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:36,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:54:36,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:36,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:54:36,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:54:36,278 INFO L87 Difference]: Start difference. First operand 5647 states and 18245 transitions. Second operand has 32 states, 32 states have (on average 1.59375) internal successors, (51), 31 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:36,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:36,852 INFO L93 Difference]: Finished difference Result 5839 states and 18482 transitions. [2022-02-10 02:54:36,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:54:36,852 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 31 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:36,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:36,862 INFO L225 Difference]: With dead ends: 5839 [2022-02-10 02:54:36,862 INFO L226 Difference]: Without dead ends: 5829 [2022-02-10 02:54:36,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=1353, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:54:36,862 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 155 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:36,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 526 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:36,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5829 states. [2022-02-10 02:54:36,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5829 to 5645. [2022-02-10 02:54:36,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5645 states, 5644 states have (on average 3.2321048901488307) internal successors, (18242), 5644 states have internal predecessors, (18242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:36,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5645 states to 5645 states and 18242 transitions. [2022-02-10 02:54:36,971 INFO L78 Accepts]: Start accepts. Automaton has 5645 states and 18242 transitions. Word has length 25 [2022-02-10 02:54:36,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:36,971 INFO L470 AbstractCegarLoop]: Abstraction has 5645 states and 18242 transitions. [2022-02-10 02:54:36,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 31 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:36,971 INFO L276 IsEmpty]: Start isEmpty. Operand 5645 states and 18242 transitions. [2022-02-10 02:54:36,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:54:36,979 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:36,979 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:36,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (322)] Ended with exit code 0 [2022-02-10 02:54:37,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 322 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable325 [2022-02-10 02:54:37,179 INFO L402 AbstractCegarLoop]: === Iteration 327 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:37,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:37,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1884173675, now seen corresponding path program 321 times [2022-02-10 02:54:37,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:37,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182802512] [2022-02-10 02:54:37,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:37,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:37,408 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:37,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182802512] [2022-02-10 02:54:37,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182802512] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:37,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880736680] [2022-02-10 02:54:37,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:54:37,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:37,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:37,409 INFO L229 MonitoredProcess]: Starting monitored process 323 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:37,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (323)] Waiting until timeout for monitored process [2022-02-10 02:54:37,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:54:37,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:37,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:54:37,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:37,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:38,065 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:38,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880736680] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:38,066 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:38,066 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 30 [2022-02-10 02:54:38,066 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41450255] [2022-02-10 02:54:38,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:38,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 02:54:38,066 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:38,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 02:54:38,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:54:38,066 INFO L87 Difference]: Start difference. First operand 5645 states and 18242 transitions. Second operand has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:38,672 INFO L93 Difference]: Finished difference Result 5806 states and 18425 transitions. [2022-02-10 02:54:38,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:54:38,672 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:54:38,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:38,682 INFO L225 Difference]: With dead ends: 5806 [2022-02-10 02:54:38,682 INFO L226 Difference]: Without dead ends: 5802 [2022-02-10 02:54:38,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 28 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=121, Invalid=1285, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:54:38,682 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 135 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:38,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 605 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:38,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5802 states. [2022-02-10 02:54:38,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5802 to 5645. [2022-02-10 02:54:38,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5645 states, 5644 states have (on average 3.2321048901488307) internal successors, (18242), 5644 states have internal predecessors, (18242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:38,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5645 states to 5645 states and 18242 transitions. [2022-02-10 02:54:38,760 INFO L78 Accepts]: Start accepts. Automaton has 5645 states and 18242 transitions. Word has length 25 [2022-02-10 02:54:38,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:38,760 INFO L470 AbstractCegarLoop]: Abstraction has 5645 states and 18242 transitions. [2022-02-10 02:54:38,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:38,760 INFO L276 IsEmpty]: Start isEmpty. Operand 5645 states and 18242 transitions. [2022-02-10 02:54:38,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:54:38,767 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:38,767 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:38,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (323)] Ended with exit code 0 [2022-02-10 02:54:38,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326,323 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:38,968 INFO L402 AbstractCegarLoop]: === Iteration 328 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:38,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1957366351, now seen corresponding path program 322 times [2022-02-10 02:54:38,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:38,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048585064] [2022-02-10 02:54:38,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:38,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:39,055 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:39,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048585064] [2022-02-10 02:54:39,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048585064] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:39,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26817201] [2022-02-10 02:54:39,055 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:54:39,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:39,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:39,056 INFO L229 MonitoredProcess]: Starting monitored process 324 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:39,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (324)] Waiting until timeout for monitored process [2022-02-10 02:54:39,082 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:54:39,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:39,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:39,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:39,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:39,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26817201] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:39,248 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:39,248 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 24 [2022-02-10 02:54:39,248 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569835644] [2022-02-10 02:54:39,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:39,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:54:39,248 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:39,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:54:39,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:54:39,248 INFO L87 Difference]: Start difference. First operand 5645 states and 18242 transitions. Second operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:39,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:39,440 INFO L93 Difference]: Finished difference Result 6656 states and 21281 transitions. [2022-02-10 02:54:39,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 02:54:39,440 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:54:39,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:39,450 INFO L225 Difference]: With dead ends: 6656 [2022-02-10 02:54:39,451 INFO L226 Difference]: Without dead ends: 6647 [2022-02-10 02:54:39,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=386, Invalid=1174, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:54:39,451 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 100 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:39,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 69 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:54:39,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6647 states. [2022-02-10 02:54:39,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6647 to 5642. [2022-02-10 02:54:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5642 states, 5641 states have (on average 3.2331146959758907) internal successors, (18238), 5641 states have internal predecessors, (18238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:39,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 18238 transitions. [2022-02-10 02:54:39,559 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 18238 transitions. Word has length 26 [2022-02-10 02:54:39,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:39,559 INFO L470 AbstractCegarLoop]: Abstraction has 5642 states and 18238 transitions. [2022-02-10 02:54:39,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:39,559 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 18238 transitions. [2022-02-10 02:54:39,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:54:39,565 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:39,566 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:39,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (324)] Ended with exit code 0 [2022-02-10 02:54:39,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327,324 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:39,766 INFO L402 AbstractCegarLoop]: === Iteration 329 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:39,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:39,767 INFO L85 PathProgramCache]: Analyzing trace with hash -475906805, now seen corresponding path program 323 times [2022-02-10 02:54:39,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:39,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303027214] [2022-02-10 02:54:39,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:39,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:39,855 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:39,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303027214] [2022-02-10 02:54:39,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303027214] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:39,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381414204] [2022-02-10 02:54:39,855 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:54:39,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:39,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:39,856 INFO L229 MonitoredProcess]: Starting monitored process 325 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:39,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (325)] Waiting until timeout for monitored process [2022-02-10 02:54:39,884 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:54:39,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:39,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:39,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:39,991 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:39,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:40,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381414204] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:40,036 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:40,036 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 24 [2022-02-10 02:54:40,036 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655457381] [2022-02-10 02:54:40,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:40,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:54:40,036 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:40,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:54:40,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:54:40,037 INFO L87 Difference]: Start difference. First operand 5642 states and 18238 transitions. Second operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:40,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:40,231 INFO L93 Difference]: Finished difference Result 6807 states and 21724 transitions. [2022-02-10 02:54:40,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:54:40,231 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:54:40,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:40,244 INFO L225 Difference]: With dead ends: 6807 [2022-02-10 02:54:40,244 INFO L226 Difference]: Without dead ends: 6807 [2022-02-10 02:54:40,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=307, Invalid=685, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:54:40,245 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 78 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:40,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 104 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:54:40,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6807 states. [2022-02-10 02:54:40,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6807 to 5732. [2022-02-10 02:54:40,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5732 states, 5731 states have (on average 3.2291048682603387) internal successors, (18506), 5731 states have internal predecessors, (18506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:40,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5732 states to 5732 states and 18506 transitions. [2022-02-10 02:54:40,340 INFO L78 Accepts]: Start accepts. Automaton has 5732 states and 18506 transitions. Word has length 26 [2022-02-10 02:54:40,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:40,340 INFO L470 AbstractCegarLoop]: Abstraction has 5732 states and 18506 transitions. [2022-02-10 02:54:40,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:40,340 INFO L276 IsEmpty]: Start isEmpty. Operand 5732 states and 18506 transitions. [2022-02-10 02:54:40,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:54:40,348 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:40,348 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:40,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (325)] Ended with exit code 0 [2022-02-10 02:54:40,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328,325 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:40,549 INFO L402 AbstractCegarLoop]: === Iteration 330 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:40,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:40,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1150673871, now seen corresponding path program 324 times [2022-02-10 02:54:40,549 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:40,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272454657] [2022-02-10 02:54:40,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:40,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:40,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:40,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272454657] [2022-02-10 02:54:40,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272454657] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:40,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089898215] [2022-02-10 02:54:40,636 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:54:40,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:40,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:40,637 INFO L229 MonitoredProcess]: Starting monitored process 326 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:40,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (326)] Waiting until timeout for monitored process [2022-02-10 02:54:40,665 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:54:40,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:40,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:40,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:40,799 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:40,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:40,839 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:40,840 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089898215] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:40,840 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:40,840 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:54:40,840 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837675960] [2022-02-10 02:54:40,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:40,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:54:40,840 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:40,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:54:40,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:54:40,840 INFO L87 Difference]: Start difference. First operand 5732 states and 18506 transitions. Second operand has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:41,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:41,769 INFO L93 Difference]: Finished difference Result 8882 states and 28136 transitions. [2022-02-10 02:54:41,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-10 02:54:41,769 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:54:41,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:41,784 INFO L225 Difference]: With dead ends: 8882 [2022-02-10 02:54:41,784 INFO L226 Difference]: Without dead ends: 8876 [2022-02-10 02:54:41,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2386 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2504, Invalid=5506, Unknown=0, NotChecked=0, Total=8010 [2022-02-10 02:54:41,785 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 256 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:41,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 142 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:54:41,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8876 states. [2022-02-10 02:54:41,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8876 to 7819. [2022-02-10 02:54:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7819 states, 7818 states have (on average 3.261831670503965) internal successors, (25501), 7818 states have internal predecessors, (25501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:41,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7819 states to 7819 states and 25501 transitions. [2022-02-10 02:54:41,950 INFO L78 Accepts]: Start accepts. Automaton has 7819 states and 25501 transitions. Word has length 26 [2022-02-10 02:54:41,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:41,950 INFO L470 AbstractCegarLoop]: Abstraction has 7819 states and 25501 transitions. [2022-02-10 02:54:41,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:41,951 INFO L276 IsEmpty]: Start isEmpty. Operand 7819 states and 25501 transitions. [2022-02-10 02:54:41,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:54:41,962 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:41,962 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:41,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (326)] Ended with exit code 0 [2022-02-10 02:54:42,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329,326 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:42,163 INFO L402 AbstractCegarLoop]: === Iteration 331 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:42,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:42,163 INFO L85 PathProgramCache]: Analyzing trace with hash -843791285, now seen corresponding path program 325 times [2022-02-10 02:54:42,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:42,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168608724] [2022-02-10 02:54:42,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:42,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:42,250 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:42,250 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168608724] [2022-02-10 02:54:42,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168608724] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:42,250 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237843149] [2022-02-10 02:54:42,250 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:54:42,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:42,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:42,251 INFO L229 MonitoredProcess]: Starting monitored process 327 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:42,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (327)] Waiting until timeout for monitored process [2022-02-10 02:54:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:42,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:42,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:42,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:42,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237843149] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:42,457 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:42,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:54:42,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070387344] [2022-02-10 02:54:42,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:42,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:54:42,458 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:42,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:54:42,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:54:42,458 INFO L87 Difference]: Start difference. First operand 7819 states and 25501 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:43,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:43,234 INFO L93 Difference]: Finished difference Result 8509 states and 26964 transitions. [2022-02-10 02:54:43,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-10 02:54:43,234 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:54:43,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:43,249 INFO L225 Difference]: With dead ends: 8509 [2022-02-10 02:54:43,250 INFO L226 Difference]: Without dead ends: 8505 [2022-02-10 02:54:43,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1923 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1853, Invalid=4789, Unknown=0, NotChecked=0, Total=6642 [2022-02-10 02:54:43,251 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 169 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:43,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 147 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:54:43,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8505 states. [2022-02-10 02:54:43,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8505 to 6890. [2022-02-10 02:54:43,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6890 states, 6889 states have (on average 3.216867469879518) internal successors, (22161), 6889 states have internal predecessors, (22161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:43,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6890 states to 6890 states and 22161 transitions. [2022-02-10 02:54:43,382 INFO L78 Accepts]: Start accepts. Automaton has 6890 states and 22161 transitions. Word has length 26 [2022-02-10 02:54:43,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:43,382 INFO L470 AbstractCegarLoop]: Abstraction has 6890 states and 22161 transitions. [2022-02-10 02:54:43,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:43,382 INFO L276 IsEmpty]: Start isEmpty. Operand 6890 states and 22161 transitions. [2022-02-10 02:54:43,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:54:43,392 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:43,392 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:43,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (327)] Ended with exit code 0 [2022-02-10 02:54:43,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330,327 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:43,592 INFO L402 AbstractCegarLoop]: === Iteration 332 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:43,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:43,592 INFO L85 PathProgramCache]: Analyzing trace with hash -209442869, now seen corresponding path program 326 times [2022-02-10 02:54:43,593 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:43,593 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048104576] [2022-02-10 02:54:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:43,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:43,698 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:43,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:43,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048104576] [2022-02-10 02:54:43,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048104576] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:43,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742066999] [2022-02-10 02:54:43,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:54:43,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:43,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:43,699 INFO L229 MonitoredProcess]: Starting monitored process 328 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:43,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (328)] Waiting until timeout for monitored process [2022-02-10 02:54:43,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:54:43,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:43,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:43,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:43,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:43,900 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742066999] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:43,900 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:43,900 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:54:43,900 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482604386] [2022-02-10 02:54:43,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:43,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:54:43,900 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:43,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:54:43,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:54:43,901 INFO L87 Difference]: Start difference. First operand 6890 states and 22161 transitions. Second operand has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:44,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:44,947 INFO L93 Difference]: Finished difference Result 8128 states and 25308 transitions. [2022-02-10 02:54:44,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-10 02:54:44,947 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:54:44,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:44,962 INFO L225 Difference]: With dead ends: 8128 [2022-02-10 02:54:44,962 INFO L226 Difference]: Without dead ends: 8128 [2022-02-10 02:54:44,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1999 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2798, Invalid=5034, Unknown=0, NotChecked=0, Total=7832 [2022-02-10 02:54:44,963 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 207 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:44,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 272 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:54:44,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8128 states. [2022-02-10 02:54:45,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8128 to 7398. [2022-02-10 02:54:45,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7398 states, 7397 states have (on average 3.231715560362309) internal successors, (23905), 7397 states have internal predecessors, (23905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7398 states to 7398 states and 23905 transitions. [2022-02-10 02:54:45,088 INFO L78 Accepts]: Start accepts. Automaton has 7398 states and 23905 transitions. Word has length 26 [2022-02-10 02:54:45,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:45,088 INFO L470 AbstractCegarLoop]: Abstraction has 7398 states and 23905 transitions. [2022-02-10 02:54:45,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:45,088 INFO L276 IsEmpty]: Start isEmpty. Operand 7398 states and 23905 transitions. [2022-02-10 02:54:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:54:45,098 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:45,098 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:45,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (328)] Ended with exit code 0 [2022-02-10 02:54:45,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 328 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable331 [2022-02-10 02:54:45,299 INFO L402 AbstractCegarLoop]: === Iteration 333 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:45,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:45,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1426294291, now seen corresponding path program 327 times [2022-02-10 02:54:45,299 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:45,299 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422502464] [2022-02-10 02:54:45,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:45,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:45,412 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:45,412 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:45,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422502464] [2022-02-10 02:54:45,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422502464] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:45,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096817761] [2022-02-10 02:54:45,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:54:45,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:45,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:45,413 INFO L229 MonitoredProcess]: Starting monitored process 329 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:45,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (329)] Waiting until timeout for monitored process [2022-02-10 02:54:45,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:54:45,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:45,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:45,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:45,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:45,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096817761] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:45,608 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:45,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:54:45,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234580964] [2022-02-10 02:54:45,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:45,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:54:45,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:45,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:54:45,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:54:45,609 INFO L87 Difference]: Start difference. First operand 7398 states and 23905 transitions. Second operand has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:46,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:46,742 INFO L93 Difference]: Finished difference Result 7702 states and 24341 transitions. [2022-02-10 02:54:46,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-10 02:54:46,742 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:54:46,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:46,756 INFO L225 Difference]: With dead ends: 7702 [2022-02-10 02:54:46,756 INFO L226 Difference]: Without dead ends: 7700 [2022-02-10 02:54:46,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3385 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=4219, Invalid=7991, Unknown=0, NotChecked=0, Total=12210 [2022-02-10 02:54:46,758 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 135 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:46,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 190 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:54:46,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7700 states. [2022-02-10 02:54:46,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7700 to 6447. [2022-02-10 02:54:46,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6447 states, 6446 states have (on average 3.1968662736580824) internal successors, (20607), 6446 states have internal predecessors, (20607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:46,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6447 states to 6447 states and 20607 transitions. [2022-02-10 02:54:46,902 INFO L78 Accepts]: Start accepts. Automaton has 6447 states and 20607 transitions. Word has length 26 [2022-02-10 02:54:46,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:46,902 INFO L470 AbstractCegarLoop]: Abstraction has 6447 states and 20607 transitions. [2022-02-10 02:54:46,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:46,902 INFO L276 IsEmpty]: Start isEmpty. Operand 6447 states and 20607 transitions. [2022-02-10 02:54:46,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:54:46,911 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:46,911 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:46,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (329)] Ended with exit code 0 [2022-02-10 02:54:47,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 329 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable332 [2022-02-10 02:54:47,112 INFO L402 AbstractCegarLoop]: === Iteration 334 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:47,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:47,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1752298319, now seen corresponding path program 328 times [2022-02-10 02:54:47,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:47,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918597026] [2022-02-10 02:54:47,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:47,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:47,198 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:47,198 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:47,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918597026] [2022-02-10 02:54:47,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918597026] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:47,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440958633] [2022-02-10 02:54:47,198 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:54:47,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:47,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:47,200 INFO L229 MonitoredProcess]: Starting monitored process 330 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:47,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (330)] Waiting until timeout for monitored process [2022-02-10 02:54:47,226 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:54:47,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:47,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:47,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:47,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:47,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440958633] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:47,403 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:47,403 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:54:47,403 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532507582] [2022-02-10 02:54:47,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:47,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:54:47,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:47,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:54:47,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:54:47,404 INFO L87 Difference]: Start difference. First operand 6447 states and 20607 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:48,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:48,123 INFO L93 Difference]: Finished difference Result 7417 states and 23040 transitions. [2022-02-10 02:54:48,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-10 02:54:48,123 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:54:48,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:48,139 INFO L225 Difference]: With dead ends: 7417 [2022-02-10 02:54:48,140 INFO L226 Difference]: Without dead ends: 7413 [2022-02-10 02:54:48,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1709 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1543, Invalid=4309, Unknown=0, NotChecked=0, Total=5852 [2022-02-10 02:54:48,141 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 188 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:48,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 161 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:54:48,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7413 states. [2022-02-10 02:54:48,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7413 to 6609. [2022-02-10 02:54:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6609 states, 6608 states have (on average 3.198093220338983) internal successors, (21133), 6608 states have internal predecessors, (21133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6609 states to 6609 states and 21133 transitions. [2022-02-10 02:54:48,269 INFO L78 Accepts]: Start accepts. Automaton has 6609 states and 21133 transitions. Word has length 26 [2022-02-10 02:54:48,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:48,269 INFO L470 AbstractCegarLoop]: Abstraction has 6609 states and 21133 transitions. [2022-02-10 02:54:48,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand 6609 states and 21133 transitions. [2022-02-10 02:54:48,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:54:48,279 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:48,279 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:48,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (330)] Ended with exit code 0 [2022-02-10 02:54:48,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 330 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable333 [2022-02-10 02:54:48,480 INFO L402 AbstractCegarLoop]: === Iteration 335 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:48,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:48,480 INFO L85 PathProgramCache]: Analyzing trace with hash 626697419, now seen corresponding path program 329 times [2022-02-10 02:54:48,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:48,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392370845] [2022-02-10 02:54:48,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:48,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:48,566 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:48,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392370845] [2022-02-10 02:54:48,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392370845] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:48,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836436183] [2022-02-10 02:54:48,566 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:54:48,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:48,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:48,567 INFO L229 MonitoredProcess]: Starting monitored process 331 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:48,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (331)] Waiting until timeout for monitored process [2022-02-10 02:54:48,594 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:54:48,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:48,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:48,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:48,727 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:48,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:48,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836436183] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:48,769 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:48,770 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:54:48,770 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865823100] [2022-02-10 02:54:48,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:48,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:54:48,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:48,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:54:48,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:54:48,770 INFO L87 Difference]: Start difference. First operand 6609 states and 21133 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:49,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:49,391 INFO L93 Difference]: Finished difference Result 7750 states and 24220 transitions. [2022-02-10 02:54:49,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-10 02:54:49,391 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:54:49,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:49,404 INFO L225 Difference]: With dead ends: 7750 [2022-02-10 02:54:49,404 INFO L226 Difference]: Without dead ends: 7745 [2022-02-10 02:54:49,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1494 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1273, Invalid=3839, Unknown=0, NotChecked=0, Total=5112 [2022-02-10 02:54:49,405 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 227 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:49,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 120 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:54:49,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7745 states. [2022-02-10 02:54:49,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7745 to 6796. [2022-02-10 02:54:49,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6796 states, 6795 states have (on average 3.2073583517292126) internal successors, (21794), 6795 states have internal predecessors, (21794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:49,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6796 states to 6796 states and 21794 transitions. [2022-02-10 02:54:49,543 INFO L78 Accepts]: Start accepts. Automaton has 6796 states and 21794 transitions. Word has length 26 [2022-02-10 02:54:49,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:49,543 INFO L470 AbstractCegarLoop]: Abstraction has 6796 states and 21794 transitions. [2022-02-10 02:54:49,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:49,544 INFO L276 IsEmpty]: Start isEmpty. Operand 6796 states and 21794 transitions. [2022-02-10 02:54:49,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:54:49,552 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:49,552 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:49,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (331)] Ended with exit code 0 [2022-02-10 02:54:49,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 331 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable334 [2022-02-10 02:54:49,753 INFO L402 AbstractCegarLoop]: === Iteration 336 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:49,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:49,753 INFO L85 PathProgramCache]: Analyzing trace with hash 92807887, now seen corresponding path program 330 times [2022-02-10 02:54:49,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:49,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789578233] [2022-02-10 02:54:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:49,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:49,852 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:49,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:49,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789578233] [2022-02-10 02:54:49,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789578233] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:49,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408842320] [2022-02-10 02:54:49,852 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:54:49,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:49,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:49,853 INFO L229 MonitoredProcess]: Starting monitored process 332 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:49,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (332)] Waiting until timeout for monitored process [2022-02-10 02:54:49,880 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:54:49,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:49,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:49,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:50,012 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:50,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:50,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408842320] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:50,054 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:50,054 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:54:50,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622279289] [2022-02-10 02:54:50,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:50,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:54:50,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:50,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:54:50,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:54:50,055 INFO L87 Difference]: Start difference. First operand 6796 states and 21794 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:50,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:50,633 INFO L93 Difference]: Finished difference Result 8486 states and 26860 transitions. [2022-02-10 02:54:50,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-10 02:54:50,633 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:54:50,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:50,649 INFO L225 Difference]: With dead ends: 8486 [2022-02-10 02:54:50,649 INFO L226 Difference]: Without dead ends: 8480 [2022-02-10 02:54:50,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1044, Invalid=3378, Unknown=0, NotChecked=0, Total=4422 [2022-02-10 02:54:50,650 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 211 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:50,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 102 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:54:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8480 states. [2022-02-10 02:54:50,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8480 to 6919. [2022-02-10 02:54:50,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6919 states, 6918 states have (on average 3.210899103787222) internal successors, (22213), 6918 states have internal predecessors, (22213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:50,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6919 states to 6919 states and 22213 transitions. [2022-02-10 02:54:50,773 INFO L78 Accepts]: Start accepts. Automaton has 6919 states and 22213 transitions. Word has length 26 [2022-02-10 02:54:50,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:50,773 INFO L470 AbstractCegarLoop]: Abstraction has 6919 states and 22213 transitions. [2022-02-10 02:54:50,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:50,773 INFO L276 IsEmpty]: Start isEmpty. Operand 6919 states and 22213 transitions. [2022-02-10 02:54:50,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:54:50,782 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:50,783 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:50,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (332)] Ended with exit code 0 [2022-02-10 02:54:50,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335,332 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:50,983 INFO L402 AbstractCegarLoop]: === Iteration 337 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:50,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:50,983 INFO L85 PathProgramCache]: Analyzing trace with hash 722101579, now seen corresponding path program 331 times [2022-02-10 02:54:50,983 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:50,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406422323] [2022-02-10 02:54:50,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:50,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:51,067 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:51,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:51,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406422323] [2022-02-10 02:54:51,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406422323] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:51,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742512898] [2022-02-10 02:54:51,068 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:54:51,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:51,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:51,069 INFO L229 MonitoredProcess]: Starting monitored process 333 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:51,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (333)] Waiting until timeout for monitored process [2022-02-10 02:54:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:51,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:51,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:51,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:51,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742512898] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:51,269 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:51,269 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:54:51,269 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84104010] [2022-02-10 02:54:51,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:51,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:54:51,270 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:51,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:54:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:54:51,270 INFO L87 Difference]: Start difference. First operand 6919 states and 22213 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:51,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:51,808 INFO L93 Difference]: Finished difference Result 9245 states and 29529 transitions. [2022-02-10 02:54:51,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 02:54:51,808 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:54:51,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:51,822 INFO L225 Difference]: With dead ends: 9245 [2022-02-10 02:54:51,823 INFO L226 Difference]: Without dead ends: 9238 [2022-02-10 02:54:51,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1071 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=857, Invalid=2925, Unknown=0, NotChecked=0, Total=3782 [2022-02-10 02:54:51,823 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 147 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:51,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 131 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:54:51,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9238 states. [2022-02-10 02:54:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9238 to 6986. [2022-02-10 02:54:51,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6986 states, 6985 states have (on average 3.2097351467430206) internal successors, (22420), 6985 states have internal predecessors, (22420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:51,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6986 states to 6986 states and 22420 transitions. [2022-02-10 02:54:51,946 INFO L78 Accepts]: Start accepts. Automaton has 6986 states and 22420 transitions. Word has length 26 [2022-02-10 02:54:51,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:51,946 INFO L470 AbstractCegarLoop]: Abstraction has 6986 states and 22420 transitions. [2022-02-10 02:54:51,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:51,946 INFO L276 IsEmpty]: Start isEmpty. Operand 6986 states and 22420 transitions. [2022-02-10 02:54:51,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:54:51,956 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:51,956 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:51,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (333)] Ended with exit code 0 [2022-02-10 02:54:52,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336,333 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:52,156 INFO L402 AbstractCegarLoop]: === Iteration 338 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:52,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:52,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1244630449, now seen corresponding path program 332 times [2022-02-10 02:54:52,157 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:52,157 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640556739] [2022-02-10 02:54:52,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:52,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:52,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:52,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640556739] [2022-02-10 02:54:52,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640556739] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:52,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087457329] [2022-02-10 02:54:52,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:54:52,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:52,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:52,246 INFO L229 MonitoredProcess]: Starting monitored process 334 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:52,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (334)] Waiting until timeout for monitored process [2022-02-10 02:54:52,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:54:52,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:52,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:52,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:52,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:52,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087457329] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:52,454 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:52,454 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:54:52,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22350406] [2022-02-10 02:54:52,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:52,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:54:52,454 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:52,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:54:52,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:54:52,455 INFO L87 Difference]: Start difference. First operand 6986 states and 22420 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:52,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:52,925 INFO L93 Difference]: Finished difference Result 9285 states and 29604 transitions. [2022-02-10 02:54:52,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-10 02:54:52,925 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:54:52,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:52,941 INFO L225 Difference]: With dead ends: 9285 [2022-02-10 02:54:52,941 INFO L226 Difference]: Without dead ends: 9277 [2022-02-10 02:54:52,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=713, Invalid=2479, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 02:54:52,942 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 120 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:52,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 138 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:54:52,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9277 states. [2022-02-10 02:54:53,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9277 to 7023. [2022-02-10 02:54:53,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7023 states, 7022 states have (on average 3.204642551979493) internal successors, (22503), 7022 states have internal predecessors, (22503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:53,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 22503 transitions. [2022-02-10 02:54:53,066 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 22503 transitions. Word has length 26 [2022-02-10 02:54:53,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:53,067 INFO L470 AbstractCegarLoop]: Abstraction has 7023 states and 22503 transitions. [2022-02-10 02:54:53,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 22503 transitions. [2022-02-10 02:54:53,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:54:53,076 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:53,076 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:53,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (334)] Ended with exit code 0 [2022-02-10 02:54:53,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 334 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable337 [2022-02-10 02:54:53,277 INFO L402 AbstractCegarLoop]: === Iteration 339 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:53,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:53,277 INFO L85 PathProgramCache]: Analyzing trace with hash -2032805105, now seen corresponding path program 333 times [2022-02-10 02:54:53,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:53,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574060146] [2022-02-10 02:54:53,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:53,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:53,360 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:53,360 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574060146] [2022-02-10 02:54:53,360 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574060146] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:53,360 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47507122] [2022-02-10 02:54:53,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:54:53,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:53,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:53,361 INFO L229 MonitoredProcess]: Starting monitored process 335 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:53,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (335)] Waiting until timeout for monitored process [2022-02-10 02:54:53,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:54:53,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:53,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:53,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:53,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:53,582 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:53,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47507122] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:53,583 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:53,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 25 [2022-02-10 02:54:53,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292036939] [2022-02-10 02:54:53,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:53,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:54:53,583 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:53,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:54:53,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:54:53,583 INFO L87 Difference]: Start difference. First operand 7023 states and 22503 transitions. Second operand has 25 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:54,673 INFO L93 Difference]: Finished difference Result 8618 states and 26394 transitions. [2022-02-10 02:54:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-10 02:54:54,673 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:54:54,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:54,687 INFO L225 Difference]: With dead ends: 8618 [2022-02-10 02:54:54,687 INFO L226 Difference]: Without dead ends: 8608 [2022-02-10 02:54:54,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2950, Invalid=5422, Unknown=0, NotChecked=0, Total=8372 [2022-02-10 02:54:54,689 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 255 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:54,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 218 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:54:54,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8608 states. [2022-02-10 02:54:54,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8608 to 7622. [2022-02-10 02:54:54,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7622 states, 7621 states have (on average 3.220705944101824) internal successors, (24545), 7621 states have internal predecessors, (24545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:54,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7622 states to 7622 states and 24545 transitions. [2022-02-10 02:54:54,815 INFO L78 Accepts]: Start accepts. Automaton has 7622 states and 24545 transitions. Word has length 26 [2022-02-10 02:54:54,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:54,816 INFO L470 AbstractCegarLoop]: Abstraction has 7622 states and 24545 transitions. [2022-02-10 02:54:54,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:54,816 INFO L276 IsEmpty]: Start isEmpty. Operand 7622 states and 24545 transitions. [2022-02-10 02:54:54,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:54:54,826 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:54,826 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:54,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (335)] Forceful destruction successful, exit code 0 [2022-02-10 02:54:55,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 335 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable338 [2022-02-10 02:54:55,026 INFO L402 AbstractCegarLoop]: === Iteration 340 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:55,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:55,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1045310769, now seen corresponding path program 334 times [2022-02-10 02:54:55,026 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:55,027 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850287140] [2022-02-10 02:54:55,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:55,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:54:55,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:55,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850287140] [2022-02-10 02:54:55,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850287140] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:55,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818971409] [2022-02-10 02:54:55,107 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:54:55,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:55,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:55,108 INFO L229 MonitoredProcess]: Starting monitored process 336 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:55,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (336)] Waiting until timeout for monitored process [2022-02-10 02:54:55,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:54:55,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:55,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:55,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 27 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:55,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:55,309 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:54:55,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818971409] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:55,309 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:55,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 25 [2022-02-10 02:54:55,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332475227] [2022-02-10 02:54:55,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:55,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:54:55,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:55,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:54:55,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:54:55,310 INFO L87 Difference]: Start difference. First operand 7622 states and 24545 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:56,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:56,595 INFO L93 Difference]: Finished difference Result 8173 states and 25297 transitions. [2022-02-10 02:54:56,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-10 02:54:56,595 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:54:56,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:56,613 INFO L225 Difference]: With dead ends: 8173 [2022-02-10 02:54:56,613 INFO L226 Difference]: Without dead ends: 8170 [2022-02-10 02:54:56,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3270 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3921, Invalid=8069, Unknown=0, NotChecked=0, Total=11990 [2022-02-10 02:54:56,615 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 205 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:56,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 226 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:54:56,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8170 states. [2022-02-10 02:54:56,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8170 to 6294. [2022-02-10 02:54:56,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6294 states, 6293 states have (on average 3.1692356586683617) internal successors, (19944), 6293 states have internal predecessors, (19944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:56,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6294 states to 6294 states and 19944 transitions. [2022-02-10 02:54:56,752 INFO L78 Accepts]: Start accepts. Automaton has 6294 states and 19944 transitions. Word has length 26 [2022-02-10 02:54:56,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:56,752 INFO L470 AbstractCegarLoop]: Abstraction has 6294 states and 19944 transitions. [2022-02-10 02:54:56,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:56,752 INFO L276 IsEmpty]: Start isEmpty. Operand 6294 states and 19944 transitions. [2022-02-10 02:54:56,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:54:56,760 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:56,760 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:56,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (336)] Ended with exit code 0 [2022-02-10 02:54:56,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339,336 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:56,960 INFO L402 AbstractCegarLoop]: === Iteration 341 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:56,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:56,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1583166347, now seen corresponding path program 335 times [2022-02-10 02:54:56,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:56,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492126095] [2022-02-10 02:54:56,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:56,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:57,048 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:57,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492126095] [2022-02-10 02:54:57,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492126095] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:57,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110023372] [2022-02-10 02:54:57,048 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:54:57,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:57,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:57,049 INFO L229 MonitoredProcess]: Starting monitored process 337 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:57,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (337)] Waiting until timeout for monitored process [2022-02-10 02:54:57,077 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:54:57,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:57,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:57,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:57,214 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:57,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:57,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110023372] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:57,256 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:57,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2022-02-10 02:54:57,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304413180] [2022-02-10 02:54:57,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:57,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:54:57,257 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:57,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:54:57,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:54:57,257 INFO L87 Difference]: Start difference. First operand 6294 states and 19944 transitions. Second operand has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:58,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:58,413 INFO L93 Difference]: Finished difference Result 6784 states and 20648 transitions. [2022-02-10 02:54:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-10 02:54:58,414 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:54:58,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:58,426 INFO L225 Difference]: With dead ends: 6784 [2022-02-10 02:54:58,426 INFO L226 Difference]: Without dead ends: 6780 [2022-02-10 02:54:58,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3674 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=4157, Invalid=8499, Unknown=0, NotChecked=0, Total=12656 [2022-02-10 02:54:58,428 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 153 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:58,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 195 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:54:58,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6780 states. [2022-02-10 02:54:58,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6780 to 6294. [2022-02-10 02:54:58,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6294 states, 6293 states have (on average 3.1673287780073096) internal successors, (19932), 6293 states have internal predecessors, (19932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:58,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6294 states to 6294 states and 19932 transitions. [2022-02-10 02:54:58,537 INFO L78 Accepts]: Start accepts. Automaton has 6294 states and 19932 transitions. Word has length 26 [2022-02-10 02:54:58,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:58,538 INFO L470 AbstractCegarLoop]: Abstraction has 6294 states and 19932 transitions. [2022-02-10 02:54:58,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:58,538 INFO L276 IsEmpty]: Start isEmpty. Operand 6294 states and 19932 transitions. [2022-02-10 02:54:58,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:54:58,547 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:58,547 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:58,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (337)] Ended with exit code 0 [2022-02-10 02:54:58,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340,337 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:58,748 INFO L402 AbstractCegarLoop]: === Iteration 342 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:58,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:58,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1572507723, now seen corresponding path program 336 times [2022-02-10 02:54:58,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:58,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941844123] [2022-02-10 02:54:58,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:58,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:58,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:58,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941844123] [2022-02-10 02:54:58,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941844123] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:58,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879332248] [2022-02-10 02:54:58,822 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:54:58,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:58,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:58,823 INFO L229 MonitoredProcess]: Starting monitored process 338 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:58,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (338)] Waiting until timeout for monitored process [2022-02-10 02:54:58,851 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 02:54:58,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:58,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:58,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:58,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:59,035 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:59,035 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879332248] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:59,035 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:59,035 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 25 [2022-02-10 02:54:59,035 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478183392] [2022-02-10 02:54:59,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:59,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:54:59,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:59,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:54:59,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:54:59,036 INFO L87 Difference]: Start difference. First operand 6294 states and 19932 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:00,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:00,042 INFO L93 Difference]: Finished difference Result 8287 states and 24904 transitions. [2022-02-10 02:55:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-10 02:55:00,042 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:00,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:00,056 INFO L225 Difference]: With dead ends: 8287 [2022-02-10 02:55:00,056 INFO L226 Difference]: Without dead ends: 8273 [2022-02-10 02:55:00,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1941 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2743, Invalid=5089, Unknown=0, NotChecked=0, Total=7832 [2022-02-10 02:55:00,057 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 262 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:00,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 231 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:00,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8273 states. [2022-02-10 02:55:00,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8273 to 7010. [2022-02-10 02:55:00,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7010 states, 7009 states have (on average 3.1938935654158938) internal successors, (22386), 7009 states have internal predecessors, (22386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7010 states to 7010 states and 22386 transitions. [2022-02-10 02:55:00,173 INFO L78 Accepts]: Start accepts. Automaton has 7010 states and 22386 transitions. Word has length 26 [2022-02-10 02:55:00,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:00,173 INFO L470 AbstractCegarLoop]: Abstraction has 7010 states and 22386 transitions. [2022-02-10 02:55:00,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:00,173 INFO L276 IsEmpty]: Start isEmpty. Operand 7010 states and 22386 transitions. [2022-02-10 02:55:00,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:00,182 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:00,182 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:00,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (338)] Ended with exit code 0 [2022-02-10 02:55:00,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341,338 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:00,383 INFO L402 AbstractCegarLoop]: === Iteration 343 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:00,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:00,383 INFO L85 PathProgramCache]: Analyzing trace with hash 355656301, now seen corresponding path program 337 times [2022-02-10 02:55:00,383 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:00,383 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913879277] [2022-02-10 02:55:00,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:00,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:00,456 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:00,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913879277] [2022-02-10 02:55:00,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913879277] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:00,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611596334] [2022-02-10 02:55:00,456 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:55:00,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:00,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:00,458 INFO L229 MonitoredProcess]: Starting monitored process 339 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:00,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (339)] Waiting until timeout for monitored process [2022-02-10 02:55:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:00,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:00,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 26 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:00,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:00,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611596334] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:00,666 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:00,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 25 [2022-02-10 02:55:00,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051684302] [2022-02-10 02:55:00,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:00,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:55:00,667 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:00,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:55:00,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:55:00,667 INFO L87 Difference]: Start difference. First operand 7010 states and 22386 transitions. Second operand has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:01,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:01,896 INFO L93 Difference]: Finished difference Result 7676 states and 23413 transitions. [2022-02-10 02:55:01,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-10 02:55:01,896 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:01,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:01,909 INFO L225 Difference]: With dead ends: 7676 [2022-02-10 02:55:01,909 INFO L226 Difference]: Without dead ends: 7671 [2022-02-10 02:55:01,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3385 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3832, Invalid=8378, Unknown=0, NotChecked=0, Total=12210 [2022-02-10 02:55:01,911 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 224 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:01,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 201 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:55:01,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7671 states. [2022-02-10 02:55:02,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7671 to 5755. [2022-02-10 02:55:02,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5755 states, 5754 states have (on average 3.142683350712548) internal successors, (18083), 5754 states have internal predecessors, (18083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5755 states to 5755 states and 18083 transitions. [2022-02-10 02:55:02,040 INFO L78 Accepts]: Start accepts. Automaton has 5755 states and 18083 transitions. Word has length 26 [2022-02-10 02:55:02,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:02,040 INFO L470 AbstractCegarLoop]: Abstraction has 5755 states and 18083 transitions. [2022-02-10 02:55:02,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:02,040 INFO L276 IsEmpty]: Start isEmpty. Operand 5755 states and 18083 transitions. [2022-02-10 02:55:02,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:02,047 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:02,047 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:02,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (339)] Ended with exit code 0 [2022-02-10 02:55:02,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 339 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable342 [2022-02-10 02:55:02,248 INFO L402 AbstractCegarLoop]: === Iteration 344 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:02,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:02,248 INFO L85 PathProgramCache]: Analyzing trace with hash 893511879, now seen corresponding path program 338 times [2022-02-10 02:55:02,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:02,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127925701] [2022-02-10 02:55:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:02,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 14 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:02,328 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:02,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127925701] [2022-02-10 02:55:02,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127925701] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:02,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027905806] [2022-02-10 02:55:02,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:55:02,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:02,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:02,329 INFO L229 MonitoredProcess]: Starting monitored process 340 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:02,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (340)] Waiting until timeout for monitored process [2022-02-10 02:55:02,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:55:02,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:02,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:02,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:02,500 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 26 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:02,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:02,541 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 14 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:02,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027905806] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:02,541 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:02,541 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 26 [2022-02-10 02:55:02,541 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856816320] [2022-02-10 02:55:02,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:02,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:55:02,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:02,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:55:02,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:55:02,542 INFO L87 Difference]: Start difference. First operand 5755 states and 18083 transitions. Second operand has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:03,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:03,800 INFO L93 Difference]: Finished difference Result 6418 states and 19153 transitions. [2022-02-10 02:55:03,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-10 02:55:03,800 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:03,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:03,810 INFO L225 Difference]: With dead ends: 6418 [2022-02-10 02:55:03,810 INFO L226 Difference]: Without dead ends: 6414 [2022-02-10 02:55:03,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3616 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3843, Invalid=8589, Unknown=0, NotChecked=0, Total=12432 [2022-02-10 02:55:03,812 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 229 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:03,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 210 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:55:03,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6414 states. [2022-02-10 02:55:03,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6414 to 5730. [2022-02-10 02:55:03,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5730 states, 5729 states have (on average 3.1406877290975737) internal successors, (17993), 5729 states have internal predecessors, (17993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:03,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5730 states to 5730 states and 17993 transitions. [2022-02-10 02:55:03,898 INFO L78 Accepts]: Start accepts. Automaton has 5730 states and 17993 transitions. Word has length 26 [2022-02-10 02:55:03,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:03,898 INFO L470 AbstractCegarLoop]: Abstraction has 5730 states and 17993 transitions. [2022-02-10 02:55:03,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:03,898 INFO L276 IsEmpty]: Start isEmpty. Operand 5730 states and 17993 transitions. [2022-02-10 02:55:03,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:03,905 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:03,905 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:03,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (340)] Ended with exit code 0 [2022-02-10 02:55:04,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 340 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable343 [2022-02-10 02:55:04,105 INFO L402 AbstractCegarLoop]: === Iteration 345 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:04,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:04,105 INFO L85 PathProgramCache]: Analyzing trace with hash 387165613, now seen corresponding path program 339 times [2022-02-10 02:55:04,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:04,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039901565] [2022-02-10 02:55:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:04,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:04,192 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:04,193 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:04,193 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039901565] [2022-02-10 02:55:04,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039901565] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:04,193 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407602657] [2022-02-10 02:55:04,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:55:04,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:04,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:04,194 INFO L229 MonitoredProcess]: Starting monitored process 341 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:04,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (341)] Waiting until timeout for monitored process [2022-02-10 02:55:04,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 02:55:04,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:04,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:04,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:04,369 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:04,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:04,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407602657] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:04,411 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:04,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 27 [2022-02-10 02:55:04,411 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713533886] [2022-02-10 02:55:04,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:04,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:55:04,412 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:04,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:55:04,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:55:04,412 INFO L87 Difference]: Start difference. First operand 5730 states and 17993 transitions. Second operand has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:05,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:05,550 INFO L93 Difference]: Finished difference Result 6312 states and 18907 transitions. [2022-02-10 02:55:05,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-10 02:55:05,550 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:05,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:05,560 INFO L225 Difference]: With dead ends: 6312 [2022-02-10 02:55:05,560 INFO L226 Difference]: Without dead ends: 6306 [2022-02-10 02:55:05,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3914 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=4022, Invalid=8860, Unknown=0, NotChecked=0, Total=12882 [2022-02-10 02:55:05,561 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 178 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:05,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 149 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:05,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6306 states. [2022-02-10 02:55:05,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6306 to 5730. [2022-02-10 02:55:05,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5730 states, 5729 states have (on average 3.139814976435678) internal successors, (17988), 5729 states have internal predecessors, (17988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5730 states to 5730 states and 17988 transitions. [2022-02-10 02:55:05,648 INFO L78 Accepts]: Start accepts. Automaton has 5730 states and 17988 transitions. Word has length 26 [2022-02-10 02:55:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:05,648 INFO L470 AbstractCegarLoop]: Abstraction has 5730 states and 17988 transitions. [2022-02-10 02:55:05,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:05,648 INFO L276 IsEmpty]: Start isEmpty. Operand 5730 states and 17988 transitions. [2022-02-10 02:55:05,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:05,654 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:05,654 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:05,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (341)] Ended with exit code 0 [2022-02-10 02:55:05,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 341 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable344 [2022-02-10 02:55:05,855 INFO L402 AbstractCegarLoop]: === Iteration 346 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:05,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:05,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1668055695, now seen corresponding path program 340 times [2022-02-10 02:55:05,855 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:05,855 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052775387] [2022-02-10 02:55:05,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:05,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:05,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:05,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052775387] [2022-02-10 02:55:05,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052775387] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:05,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680470645] [2022-02-10 02:55:05,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:55:05,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:05,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:05,924 INFO L229 MonitoredProcess]: Starting monitored process 342 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:05,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (342)] Waiting until timeout for monitored process [2022-02-10 02:55:05,951 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:55:05,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:05,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:05,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:06,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:06,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680470645] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:06,140 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:06,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 14] total 25 [2022-02-10 02:55:06,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804556627] [2022-02-10 02:55:06,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:06,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:55:06,141 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:06,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:55:06,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:55:06,141 INFO L87 Difference]: Start difference. First operand 5730 states and 17988 transitions. Second operand has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:07,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:07,073 INFO L93 Difference]: Finished difference Result 8062 states and 23989 transitions. [2022-02-10 02:55:07,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-10 02:55:07,073 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:07,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:07,089 INFO L225 Difference]: With dead ends: 8062 [2022-02-10 02:55:07,089 INFO L226 Difference]: Without dead ends: 8049 [2022-02-10 02:55:07,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1775 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2558, Invalid=4752, Unknown=0, NotChecked=0, Total=7310 [2022-02-10 02:55:07,090 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 293 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:07,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 185 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:07,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8049 states. [2022-02-10 02:55:07,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8049 to 6551. [2022-02-10 02:55:07,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6551 states, 6550 states have (on average 3.1738931297709922) internal successors, (20789), 6550 states have internal predecessors, (20789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:07,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6551 states to 6551 states and 20789 transitions. [2022-02-10 02:55:07,213 INFO L78 Accepts]: Start accepts. Automaton has 6551 states and 20789 transitions. Word has length 26 [2022-02-10 02:55:07,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:07,213 INFO L470 AbstractCegarLoop]: Abstraction has 6551 states and 20789 transitions. [2022-02-10 02:55:07,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:07,213 INFO L276 IsEmpty]: Start isEmpty. Operand 6551 states and 20789 transitions. [2022-02-10 02:55:07,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:07,221 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:07,221 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:07,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (342)] Ended with exit code 0 [2022-02-10 02:55:07,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 342 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable345 [2022-02-10 02:55:07,422 INFO L402 AbstractCegarLoop]: === Iteration 347 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:07,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:07,422 INFO L85 PathProgramCache]: Analyzing trace with hash 451204273, now seen corresponding path program 341 times [2022-02-10 02:55:07,422 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:07,422 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919102174] [2022-02-10 02:55:07,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:07,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:07,491 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:07,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919102174] [2022-02-10 02:55:07,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919102174] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:07,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998918276] [2022-02-10 02:55:07,491 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:55:07,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:07,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:07,492 INFO L229 MonitoredProcess]: Starting monitored process 343 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:07,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (343)] Waiting until timeout for monitored process [2022-02-10 02:55:07,519 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:55:07,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:07,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:07,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:07,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:07,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998918276] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:07,728 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:07,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 14] total 25 [2022-02-10 02:55:07,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029827900] [2022-02-10 02:55:07,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:07,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:55:07,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:07,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:55:07,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:55:07,729 INFO L87 Difference]: Start difference. First operand 6551 states and 20789 transitions. Second operand has 25 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:08,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:08,954 INFO L93 Difference]: Finished difference Result 7347 states and 22154 transitions. [2022-02-10 02:55:08,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-10 02:55:08,955 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:08,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:08,967 INFO L225 Difference]: With dead ends: 7347 [2022-02-10 02:55:08,968 INFO L226 Difference]: Without dead ends: 7343 [2022-02-10 02:55:08,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3738 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3897, Invalid=8985, Unknown=0, NotChecked=0, Total=12882 [2022-02-10 02:55:08,969 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 260 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:08,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 174 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:08,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2022-02-10 02:55:09,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 5818. [2022-02-10 02:55:09,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5818 states, 5817 states have (on average 3.141309953584322) internal successors, (18273), 5817 states have internal predecessors, (18273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:09,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5818 states to 5818 states and 18273 transitions. [2022-02-10 02:55:09,078 INFO L78 Accepts]: Start accepts. Automaton has 5818 states and 18273 transitions. Word has length 26 [2022-02-10 02:55:09,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:09,079 INFO L470 AbstractCegarLoop]: Abstraction has 5818 states and 18273 transitions. [2022-02-10 02:55:09,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:09,079 INFO L276 IsEmpty]: Start isEmpty. Operand 5818 states and 18273 transitions. [2022-02-10 02:55:09,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:09,085 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:09,085 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:09,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (343)] Ended with exit code 0 [2022-02-10 02:55:09,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346,343 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:09,286 INFO L402 AbstractCegarLoop]: === Iteration 348 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:09,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:09,286 INFO L85 PathProgramCache]: Analyzing trace with hash 989059851, now seen corresponding path program 342 times [2022-02-10 02:55:09,286 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:09,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178913535] [2022-02-10 02:55:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:09,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:09,361 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:09,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178913535] [2022-02-10 02:55:09,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178913535] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:09,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552887655] [2022-02-10 02:55:09,362 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:55:09,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:09,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:09,363 INFO L229 MonitoredProcess]: Starting monitored process 344 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:09,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (344)] Waiting until timeout for monitored process [2022-02-10 02:55:09,403 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:55:09,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:09,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:09,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 24 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:09,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:09,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552887655] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:09,598 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:09,598 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 26 [2022-02-10 02:55:09,598 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297332230] [2022-02-10 02:55:09,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:09,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:55:09,598 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:09,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:55:09,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:55:09,599 INFO L87 Difference]: Start difference. First operand 5818 states and 18273 transitions. Second operand has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:10,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:10,854 INFO L93 Difference]: Finished difference Result 6829 states and 20369 transitions. [2022-02-10 02:55:10,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-10 02:55:10,854 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:10,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:10,868 INFO L225 Difference]: With dead ends: 6829 [2022-02-10 02:55:10,868 INFO L226 Difference]: Without dead ends: 6823 [2022-02-10 02:55:10,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3756 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3740, Invalid=8916, Unknown=0, NotChecked=0, Total=12656 [2022-02-10 02:55:10,870 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 242 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:10,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 194 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:55:10,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6823 states. [2022-02-10 02:55:10,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6823 to 5688. [2022-02-10 02:55:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5688 states, 5687 states have (on average 3.143660981185159) internal successors, (17878), 5687 states have internal predecessors, (17878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5688 states to 5688 states and 17878 transitions. [2022-02-10 02:55:10,989 INFO L78 Accepts]: Start accepts. Automaton has 5688 states and 17878 transitions. Word has length 26 [2022-02-10 02:55:10,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:10,989 INFO L470 AbstractCegarLoop]: Abstraction has 5688 states and 17878 transitions. [2022-02-10 02:55:10,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:10,989 INFO L276 IsEmpty]: Start isEmpty. Operand 5688 states and 17878 transitions. [2022-02-10 02:55:10,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:10,995 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:10,995 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:11,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (344)] Ended with exit code 0 [2022-02-10 02:55:11,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 344 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable347 [2022-02-10 02:55:11,196 INFO L402 AbstractCegarLoop]: === Iteration 349 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:11,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:11,196 INFO L85 PathProgramCache]: Analyzing trace with hash 482713585, now seen corresponding path program 343 times [2022-02-10 02:55:11,197 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:11,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633379412] [2022-02-10 02:55:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:11,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:11,276 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:11,277 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:11,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633379412] [2022-02-10 02:55:11,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633379412] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:11,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68770522] [2022-02-10 02:55:11,277 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:55:11,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:11,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:11,278 INFO L229 MonitoredProcess]: Starting monitored process 345 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:11,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (345)] Waiting until timeout for monitored process [2022-02-10 02:55:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:11,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:11,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:11,459 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:11,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:11,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68770522] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:11,502 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:11,502 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 27 [2022-02-10 02:55:11,502 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779860614] [2022-02-10 02:55:11,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:11,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:55:11,502 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:11,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:55:11,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:55:11,502 INFO L87 Difference]: Start difference. First operand 5688 states and 17878 transitions. Second operand has 27 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:12,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:12,742 INFO L93 Difference]: Finished difference Result 6523 states and 19412 transitions. [2022-02-10 02:55:12,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-10 02:55:12,743 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:12,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:12,753 INFO L225 Difference]: With dead ends: 6523 [2022-02-10 02:55:12,753 INFO L226 Difference]: Without dead ends: 6517 [2022-02-10 02:55:12,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3893 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3698, Invalid=8958, Unknown=0, NotChecked=0, Total=12656 [2022-02-10 02:55:12,755 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 219 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:12,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 203 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:55:12,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6517 states. [2022-02-10 02:55:12,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6517 to 5681. [2022-02-10 02:55:12,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5681 states, 5680 states have (on average 3.1433098591549298) internal successors, (17854), 5680 states have internal predecessors, (17854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:12,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5681 states to 5681 states and 17854 transitions. [2022-02-10 02:55:12,847 INFO L78 Accepts]: Start accepts. Automaton has 5681 states and 17854 transitions. Word has length 26 [2022-02-10 02:55:12,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:12,847 INFO L470 AbstractCegarLoop]: Abstraction has 5681 states and 17854 transitions. [2022-02-10 02:55:12,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:12,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5681 states and 17854 transitions. [2022-02-10 02:55:12,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:12,854 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:12,854 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:12,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (345)] Ended with exit code 0 [2022-02-10 02:55:13,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348,345 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:13,055 INFO L402 AbstractCegarLoop]: === Iteration 350 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:13,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:13,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1965848523, now seen corresponding path program 344 times [2022-02-10 02:55:13,055 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:13,055 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353541600] [2022-02-10 02:55:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:13,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:13,142 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:13,142 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353541600] [2022-02-10 02:55:13,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353541600] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:13,142 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848293600] [2022-02-10 02:55:13,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:55:13,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:13,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:13,143 INFO L229 MonitoredProcess]: Starting monitored process 346 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:13,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (346)] Waiting until timeout for monitored process [2022-02-10 02:55:13,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:55:13,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:13,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:13,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:13,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:13,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848293600] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:13,373 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:13,373 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 28 [2022-02-10 02:55:13,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546933578] [2022-02-10 02:55:13,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:13,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 02:55:13,373 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:13,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 02:55:13,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:55:13,374 INFO L87 Difference]: Start difference. First operand 5681 states and 17854 transitions. Second operand has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:14,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:14,482 INFO L93 Difference]: Finished difference Result 6420 states and 19179 transitions. [2022-02-10 02:55:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-10 02:55:14,483 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:14,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:14,492 INFO L225 Difference]: With dead ends: 6420 [2022-02-10 02:55:14,492 INFO L226 Difference]: Without dead ends: 6412 [2022-02-10 02:55:14,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4057 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3820, Invalid=9062, Unknown=0, NotChecked=0, Total=12882 [2022-02-10 02:55:14,494 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 199 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:14,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 128 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:14,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6412 states. [2022-02-10 02:55:14,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6412 to 5681. [2022-02-10 02:55:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5681 states, 5680 states have (on average 3.142605633802817) internal successors, (17850), 5680 states have internal predecessors, (17850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:14,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5681 states to 5681 states and 17850 transitions. [2022-02-10 02:55:14,579 INFO L78 Accepts]: Start accepts. Automaton has 5681 states and 17850 transitions. Word has length 26 [2022-02-10 02:55:14,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:14,579 INFO L470 AbstractCegarLoop]: Abstraction has 5681 states and 17850 transitions. [2022-02-10 02:55:14,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:14,579 INFO L276 IsEmpty]: Start isEmpty. Operand 5681 states and 17850 transitions. [2022-02-10 02:55:14,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:14,586 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:14,586 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:14,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (346)] Ended with exit code 0 [2022-02-10 02:55:14,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 346 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable349 [2022-02-10 02:55:14,787 INFO L402 AbstractCegarLoop]: === Iteration 351 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:14,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:14,787 INFO L85 PathProgramCache]: Analyzing trace with hash 335075531, now seen corresponding path program 345 times [2022-02-10 02:55:14,787 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:14,787 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492215783] [2022-02-10 02:55:14,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:14,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:14,850 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:14,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492215783] [2022-02-10 02:55:14,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492215783] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:14,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53457267] [2022-02-10 02:55:14,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:55:14,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:14,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:14,851 INFO L229 MonitoredProcess]: Starting monitored process 347 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:14,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (347)] Waiting until timeout for monitored process [2022-02-10 02:55:14,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:55:14,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:14,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:14,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:15,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:15,076 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:15,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53457267] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:15,076 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:15,076 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 13] total 25 [2022-02-10 02:55:15,076 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568056238] [2022-02-10 02:55:15,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:15,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:55:15,077 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:15,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:55:15,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:55:15,077 INFO L87 Difference]: Start difference. First operand 5681 states and 17850 transitions. Second operand has 25 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:15,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:15,976 INFO L93 Difference]: Finished difference Result 8470 states and 25207 transitions. [2022-02-10 02:55:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-10 02:55:15,976 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:15,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:15,990 INFO L225 Difference]: With dead ends: 8470 [2022-02-10 02:55:15,991 INFO L226 Difference]: Without dead ends: 8458 [2022-02-10 02:55:15,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1647 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2384, Invalid=4422, Unknown=0, NotChecked=0, Total=6806 [2022-02-10 02:55:15,992 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 330 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:15,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 180 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:15,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8458 states. [2022-02-10 02:55:16,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8458 to 6463. [2022-02-10 02:55:16,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6463 states, 6462 states have (on average 3.1702259362426495) internal successors, (20486), 6462 states have internal predecessors, (20486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:16,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6463 states to 6463 states and 20486 transitions. [2022-02-10 02:55:16,112 INFO L78 Accepts]: Start accepts. Automaton has 6463 states and 20486 transitions. Word has length 26 [2022-02-10 02:55:16,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:16,112 INFO L470 AbstractCegarLoop]: Abstraction has 6463 states and 20486 transitions. [2022-02-10 02:55:16,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:16,112 INFO L276 IsEmpty]: Start isEmpty. Operand 6463 states and 20486 transitions. [2022-02-10 02:55:16,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:16,121 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:16,121 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:16,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (347)] Ended with exit code 0 [2022-02-10 02:55:16,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350,347 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:16,321 INFO L402 AbstractCegarLoop]: === Iteration 352 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:16,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:16,321 INFO L85 PathProgramCache]: Analyzing trace with hash -881775891, now seen corresponding path program 346 times [2022-02-10 02:55:16,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:16,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700514509] [2022-02-10 02:55:16,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:16,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:16,406 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:16,406 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700514509] [2022-02-10 02:55:16,406 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700514509] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:16,406 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452305619] [2022-02-10 02:55:16,406 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:55:16,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:16,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:16,407 INFO L229 MonitoredProcess]: Starting monitored process 348 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:16,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (348)] Waiting until timeout for monitored process [2022-02-10 02:55:16,434 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:55:16,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:16,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:16,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 24 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:16,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:16,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452305619] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:16,627 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:16,627 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 13] total 25 [2022-02-10 02:55:16,627 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524506625] [2022-02-10 02:55:16,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:16,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:55:16,627 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:16,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:55:16,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:55:16,628 INFO L87 Difference]: Start difference. First operand 6463 states and 20486 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:17,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:17,972 INFO L93 Difference]: Finished difference Result 7476 states and 22408 transitions. [2022-02-10 02:55:17,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-02-10 02:55:17,973 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:17,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:17,986 INFO L225 Difference]: With dead ends: 7476 [2022-02-10 02:55:17,986 INFO L226 Difference]: Without dead ends: 7473 [2022-02-10 02:55:17,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4357 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=4106, Invalid=9936, Unknown=0, NotChecked=0, Total=14042 [2022-02-10 02:55:17,988 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 295 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:17,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 163 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:55:17,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7473 states. [2022-02-10 02:55:18,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7473 to 6123. [2022-02-10 02:55:18,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6123 states, 6122 states have (on average 3.1541979745181314) internal successors, (19310), 6122 states have internal predecessors, (19310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:18,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6123 states to 6123 states and 19310 transitions. [2022-02-10 02:55:18,092 INFO L78 Accepts]: Start accepts. Automaton has 6123 states and 19310 transitions. Word has length 26 [2022-02-10 02:55:18,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:18,092 INFO L470 AbstractCegarLoop]: Abstraction has 6123 states and 19310 transitions. [2022-02-10 02:55:18,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:18,092 INFO L276 IsEmpty]: Start isEmpty. Operand 6123 states and 19310 transitions. [2022-02-10 02:55:18,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:18,099 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:18,099 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:18,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (348)] Ended with exit code 0 [2022-02-10 02:55:18,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351,348 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:18,299 INFO L402 AbstractCegarLoop]: === Iteration 353 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:18,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash -343920313, now seen corresponding path program 347 times [2022-02-10 02:55:18,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:18,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610013592] [2022-02-10 02:55:18,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:18,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 14 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:18,368 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:18,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610013592] [2022-02-10 02:55:18,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610013592] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:18,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407091269] [2022-02-10 02:55:18,368 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:55:18,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:18,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:18,369 INFO L229 MonitoredProcess]: Starting monitored process 349 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:18,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (349)] Waiting until timeout for monitored process [2022-02-10 02:55:18,396 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:55:18,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:18,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:18,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:18,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 14 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:18,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407091269] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:18,591 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:18,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 14] total 26 [2022-02-10 02:55:18,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342065960] [2022-02-10 02:55:18,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:18,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:55:18,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:18,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:55:18,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:55:18,592 INFO L87 Difference]: Start difference. First operand 6123 states and 19310 transitions. Second operand has 26 states, 26 states have (on average 1.5) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:19,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:19,874 INFO L93 Difference]: Finished difference Result 7429 states and 22254 transitions. [2022-02-10 02:55:19,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-10 02:55:19,875 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:19,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:19,887 INFO L225 Difference]: With dead ends: 7429 [2022-02-10 02:55:19,887 INFO L226 Difference]: Without dead ends: 7424 [2022-02-10 02:55:19,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4139 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3785, Invalid=9555, Unknown=0, NotChecked=0, Total=13340 [2022-02-10 02:55:19,888 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 234 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:19,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 166 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:55:19,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7424 states. [2022-02-10 02:55:19,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7424 to 6164. [2022-02-10 02:55:19,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6164 states, 6163 states have (on average 3.155281518740873) internal successors, (19446), 6163 states have internal predecessors, (19446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6164 states to 6164 states and 19446 transitions. [2022-02-10 02:55:19,996 INFO L78 Accepts]: Start accepts. Automaton has 6164 states and 19446 transitions. Word has length 26 [2022-02-10 02:55:19,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:19,996 INFO L470 AbstractCegarLoop]: Abstraction has 6164 states and 19446 transitions. [2022-02-10 02:55:19,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:19,996 INFO L276 IsEmpty]: Start isEmpty. Operand 6164 states and 19446 transitions. [2022-02-10 02:55:20,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:20,004 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:20,004 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:20,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (349)] Ended with exit code 0 [2022-02-10 02:55:20,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352,349 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:20,205 INFO L402 AbstractCegarLoop]: === Iteration 354 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:20,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:20,205 INFO L85 PathProgramCache]: Analyzing trace with hash -850266579, now seen corresponding path program 348 times [2022-02-10 02:55:20,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:20,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926248977] [2022-02-10 02:55:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:20,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:20,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:20,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926248977] [2022-02-10 02:55:20,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926248977] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:20,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105847778] [2022-02-10 02:55:20,280 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:55:20,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:20,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:20,281 INFO L229 MonitoredProcess]: Starting monitored process 350 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:20,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (350)] Waiting until timeout for monitored process [2022-02-10 02:55:20,308 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:55:20,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:20,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:20,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:20,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:20,511 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:20,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105847778] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:20,512 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:20,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 27 [2022-02-10 02:55:20,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668663754] [2022-02-10 02:55:20,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:20,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:55:20,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:20,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:55:20,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:55:20,512 INFO L87 Difference]: Start difference. First operand 6164 states and 19446 transitions. Second operand has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:21,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:21,758 INFO L93 Difference]: Finished difference Result 7557 states and 22664 transitions. [2022-02-10 02:55:21,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-10 02:55:21,758 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:21,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:21,770 INFO L225 Difference]: With dead ends: 7557 [2022-02-10 02:55:21,770 INFO L226 Difference]: Without dead ends: 7550 [2022-02-10 02:55:21,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4052 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3581, Invalid=9301, Unknown=0, NotChecked=0, Total=12882 [2022-02-10 02:55:21,772 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 208 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:21,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 189 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:55:21,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7550 states. [2022-02-10 02:55:21,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7550 to 6229. [2022-02-10 02:55:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6229 states, 6228 states have (on average 3.1652215799614645) internal successors, (19713), 6228 states have internal predecessors, (19713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:21,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6229 states to 6229 states and 19713 transitions. [2022-02-10 02:55:21,879 INFO L78 Accepts]: Start accepts. Automaton has 6229 states and 19713 transitions. Word has length 26 [2022-02-10 02:55:21,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:21,879 INFO L470 AbstractCegarLoop]: Abstraction has 6229 states and 19713 transitions. [2022-02-10 02:55:21,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:21,879 INFO L276 IsEmpty]: Start isEmpty. Operand 6229 states and 19713 transitions. [2022-02-10 02:55:21,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:21,887 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:21,887 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:21,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (350)] Ended with exit code 0 [2022-02-10 02:55:22,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 350 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable353 [2022-02-10 02:55:22,088 INFO L402 AbstractCegarLoop]: === Iteration 355 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:22,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:22,088 INFO L85 PathProgramCache]: Analyzing trace with hash 632868359, now seen corresponding path program 349 times [2022-02-10 02:55:22,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:22,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278882618] [2022-02-10 02:55:22,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:22,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:22,171 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 14 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:22,171 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:22,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278882618] [2022-02-10 02:55:22,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278882618] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:22,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571059816] [2022-02-10 02:55:22,171 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:55:22,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:22,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:22,172 INFO L229 MonitoredProcess]: Starting monitored process 351 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:22,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (351)] Waiting until timeout for monitored process [2022-02-10 02:55:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:22,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:22,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:22,384 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 24 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:22,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 14 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:22,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571059816] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:22,426 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:22,426 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 28 [2022-02-10 02:55:22,426 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525256693] [2022-02-10 02:55:22,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:22,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 02:55:22,426 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:22,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 02:55:22,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:55:22,426 INFO L87 Difference]: Start difference. First operand 6229 states and 19713 transitions. Second operand has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:23,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:23,602 INFO L93 Difference]: Finished difference Result 7309 states and 21909 transitions. [2022-02-10 02:55:23,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-10 02:55:23,602 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:23,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:23,614 INFO L225 Difference]: With dead ends: 7309 [2022-02-10 02:55:23,614 INFO L226 Difference]: Without dead ends: 7301 [2022-02-10 02:55:23,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4066 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3488, Invalid=9168, Unknown=0, NotChecked=0, Total=12656 [2022-02-10 02:55:23,616 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 207 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:23,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 153 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:23,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7301 states. [2022-02-10 02:55:23,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7301 to 6220. [2022-02-10 02:55:23,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6220 states, 6219 states have (on average 3.164656697218202) internal successors, (19681), 6219 states have internal predecessors, (19681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 19681 transitions. [2022-02-10 02:55:23,725 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 19681 transitions. Word has length 26 [2022-02-10 02:55:23,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:23,725 INFO L470 AbstractCegarLoop]: Abstraction has 6220 states and 19681 transitions. [2022-02-10 02:55:23,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 19681 transitions. [2022-02-10 02:55:23,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:23,734 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:23,734 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:23,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (351)] Ended with exit code 0 [2022-02-10 02:55:23,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354,351 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:23,935 INFO L402 AbstractCegarLoop]: === Iteration 356 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:23,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:23,935 INFO L85 PathProgramCache]: Analyzing trace with hash -634588819, now seen corresponding path program 350 times [2022-02-10 02:55:23,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:23,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405057638] [2022-02-10 02:55:23,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:23,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:24,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:24,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405057638] [2022-02-10 02:55:24,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405057638] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:24,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885558668] [2022-02-10 02:55:24,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:55:24,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:24,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:24,024 INFO L229 MonitoredProcess]: Starting monitored process 352 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:24,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (352)] Waiting until timeout for monitored process [2022-02-10 02:55:24,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:55:24,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:24,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:24,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:24,223 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:24,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:24,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885558668] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:24,266 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:24,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 29 [2022-02-10 02:55:24,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462824712] [2022-02-10 02:55:24,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:24,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 02:55:24,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:24,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 02:55:24,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:55:24,267 INFO L87 Difference]: Start difference. First operand 6220 states and 19681 transitions. Second operand has 29 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:25,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:25,348 INFO L93 Difference]: Finished difference Result 7202 states and 21676 transitions. [2022-02-10 02:55:25,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-10 02:55:25,348 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:25,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:25,359 INFO L225 Difference]: With dead ends: 7202 [2022-02-10 02:55:25,359 INFO L226 Difference]: Without dead ends: 7192 [2022-02-10 02:55:25,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4099 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3559, Invalid=9097, Unknown=0, NotChecked=0, Total=12656 [2022-02-10 02:55:25,361 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 181 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:25,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 130 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:25,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7192 states. [2022-02-10 02:55:25,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7192 to 6220. [2022-02-10 02:55:25,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6220 states, 6219 states have (on average 3.164174304550571) internal successors, (19678), 6219 states have internal predecessors, (19678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:25,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 19678 transitions. [2022-02-10 02:55:25,484 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 19678 transitions. Word has length 26 [2022-02-10 02:55:25,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:25,484 INFO L470 AbstractCegarLoop]: Abstraction has 6220 states and 19678 transitions. [2022-02-10 02:55:25,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:25,484 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 19678 transitions. [2022-02-10 02:55:25,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:25,492 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:25,492 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:25,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (352)] Ended with exit code 0 [2022-02-10 02:55:25,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 352 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable355 [2022-02-10 02:55:25,692 INFO L402 AbstractCegarLoop]: === Iteration 357 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:25,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:25,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1962363407, now seen corresponding path program 351 times [2022-02-10 02:55:25,693 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:25,693 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180487980] [2022-02-10 02:55:25,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:25,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:25,752 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:25,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180487980] [2022-02-10 02:55:25,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180487980] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:25,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023472389] [2022-02-10 02:55:25,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:55:25,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:25,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:25,753 INFO L229 MonitoredProcess]: Starting monitored process 353 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:25,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (353)] Waiting until timeout for monitored process [2022-02-10 02:55:25,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:55:25,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:25,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:25,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:25,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:25,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023472389] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:25,987 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:25,987 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 12] total 25 [2022-02-10 02:55:25,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201163769] [2022-02-10 02:55:25,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:25,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:55:25,988 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:25,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:55:25,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:55:25,988 INFO L87 Difference]: Start difference. First operand 6220 states and 19678 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:26,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:26,839 INFO L93 Difference]: Finished difference Result 9843 states and 29690 transitions. [2022-02-10 02:55:26,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-10 02:55:26,839 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:26,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:26,856 INFO L225 Difference]: With dead ends: 9843 [2022-02-10 02:55:26,856 INFO L226 Difference]: Without dead ends: 9832 [2022-02-10 02:55:26,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1549 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2204, Invalid=4116, Unknown=0, NotChecked=0, Total=6320 [2022-02-10 02:55:26,857 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 285 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:26,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 162 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:26,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9832 states. [2022-02-10 02:55:26,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9832 to 7945. [2022-02-10 02:55:26,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7945 states, 7944 states have (on average 3.2088368580060425) internal successors, (25491), 7944 states have internal predecessors, (25491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:27,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7945 states to 7945 states and 25491 transitions. [2022-02-10 02:55:27,004 INFO L78 Accepts]: Start accepts. Automaton has 7945 states and 25491 transitions. Word has length 26 [2022-02-10 02:55:27,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:27,004 INFO L470 AbstractCegarLoop]: Abstraction has 7945 states and 25491 transitions. [2022-02-10 02:55:27,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:27,004 INFO L276 IsEmpty]: Start isEmpty. Operand 7945 states and 25491 transitions. [2022-02-10 02:55:27,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:27,015 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:27,015 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:27,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (353)] Ended with exit code 0 [2022-02-10 02:55:27,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 353 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable356 [2022-02-10 02:55:27,215 INFO L402 AbstractCegarLoop]: === Iteration 358 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:27,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash 745511985, now seen corresponding path program 352 times [2022-02-10 02:55:27,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:27,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946785695] [2022-02-10 02:55:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:27,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:27,275 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:27,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:27,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946785695] [2022-02-10 02:55:27,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946785695] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:27,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491239359] [2022-02-10 02:55:27,275 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:55:27,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:27,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:27,276 INFO L229 MonitoredProcess]: Starting monitored process 354 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:27,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (354)] Waiting until timeout for monitored process [2022-02-10 02:55:27,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:55:27,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:27,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:27,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:27,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:27,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491239359] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:27,501 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:27,501 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 12] total 25 [2022-02-10 02:55:27,501 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164161831] [2022-02-10 02:55:27,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:27,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:55:27,501 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:27,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:55:27,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:55:27,502 INFO L87 Difference]: Start difference. First operand 7945 states and 25491 transitions. Second operand has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:28,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:28,959 INFO L93 Difference]: Finished difference Result 9275 states and 28279 transitions. [2022-02-10 02:55:28,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-02-10 02:55:28,959 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:28,974 INFO L225 Difference]: With dead ends: 9275 [2022-02-10 02:55:28,974 INFO L226 Difference]: Without dead ends: 9272 [2022-02-10 02:55:28,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5309 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=4426, Invalid=11324, Unknown=0, NotChecked=0, Total=15750 [2022-02-10 02:55:28,976 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 268 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:28,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 162 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:55:28,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9272 states. [2022-02-10 02:55:29,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9272 to 7600. [2022-02-10 02:55:29,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7600 states, 7599 states have (on average 3.1987103566258717) internal successors, (24307), 7599 states have internal predecessors, (24307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:29,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7600 states to 7600 states and 24307 transitions. [2022-02-10 02:55:29,109 INFO L78 Accepts]: Start accepts. Automaton has 7600 states and 24307 transitions. Word has length 26 [2022-02-10 02:55:29,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:29,109 INFO L470 AbstractCegarLoop]: Abstraction has 7600 states and 24307 transitions. [2022-02-10 02:55:29,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:29,109 INFO L276 IsEmpty]: Start isEmpty. Operand 7600 states and 24307 transitions. [2022-02-10 02:55:29,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:29,119 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:29,119 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:29,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (354)] Ended with exit code 0 [2022-02-10 02:55:29,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 354 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable357 [2022-02-10 02:55:29,320 INFO L402 AbstractCegarLoop]: === Iteration 359 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:29,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:29,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1283367563, now seen corresponding path program 353 times [2022-02-10 02:55:29,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:29,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719497558] [2022-02-10 02:55:29,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:29,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:29,383 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:29,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719497558] [2022-02-10 02:55:29,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719497558] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:29,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356135835] [2022-02-10 02:55:29,384 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:55:29,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:29,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:29,385 INFO L229 MonitoredProcess]: Starting monitored process 355 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:29,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (355)] Waiting until timeout for monitored process [2022-02-10 02:55:29,411 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:55:29,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:29,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:29,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:29,570 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:29,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:29,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356135835] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:29,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:29,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 13] total 26 [2022-02-10 02:55:29,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320209138] [2022-02-10 02:55:29,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:29,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:55:29,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:29,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:55:29,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:55:29,612 INFO L87 Difference]: Start difference. First operand 7600 states and 24307 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:31,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:31,023 INFO L93 Difference]: Finished difference Result 9530 states and 29194 transitions. [2022-02-10 02:55:31,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-02-10 02:55:31,023 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:31,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:31,038 INFO L225 Difference]: With dead ends: 9530 [2022-02-10 02:55:31,038 INFO L226 Difference]: Without dead ends: 9526 [2022-02-10 02:55:31,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4821 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3958, Invalid=10562, Unknown=0, NotChecked=0, Total=14520 [2022-02-10 02:55:31,039 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 241 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:31,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 152 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:55:31,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9526 states. [2022-02-10 02:55:31,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9526 to 7838. [2022-02-10 02:55:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7838 states, 7837 states have (on average 3.2040321551614137) internal successors, (25110), 7837 states have internal predecessors, (25110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:31,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7838 states to 7838 states and 25110 transitions. [2022-02-10 02:55:31,180 INFO L78 Accepts]: Start accepts. Automaton has 7838 states and 25110 transitions. Word has length 26 [2022-02-10 02:55:31,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:31,180 INFO L470 AbstractCegarLoop]: Abstraction has 7838 states and 25110 transitions. [2022-02-10 02:55:31,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:31,180 INFO L276 IsEmpty]: Start isEmpty. Operand 7838 states and 25110 transitions. [2022-02-10 02:55:31,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:31,191 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:31,191 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:31,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (355)] Ended with exit code 0 [2022-02-10 02:55:31,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358,355 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:31,392 INFO L402 AbstractCegarLoop]: === Iteration 360 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:31,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:31,392 INFO L85 PathProgramCache]: Analyzing trace with hash 777021297, now seen corresponding path program 354 times [2022-02-10 02:55:31,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:31,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812585223] [2022-02-10 02:55:31,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:31,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:31,463 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:31,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812585223] [2022-02-10 02:55:31,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812585223] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:31,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645482284] [2022-02-10 02:55:31,464 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:55:31,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:31,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:31,464 INFO L229 MonitoredProcess]: Starting monitored process 356 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:31,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (356)] Waiting until timeout for monitored process [2022-02-10 02:55:31,491 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:55:31,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:31,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:31,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:31,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:31,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645482284] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:31,698 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:31,698 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 14] total 27 [2022-02-10 02:55:31,698 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490692497] [2022-02-10 02:55:31,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:31,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:55:31,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:31,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:55:31,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:55:31,698 INFO L87 Difference]: Start difference. First operand 7838 states and 25110 transitions. Second operand has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:32,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:32,993 INFO L93 Difference]: Finished difference Result 9899 states and 30434 transitions. [2022-02-10 02:55:32,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-10 02:55:32,994 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:32,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:33,010 INFO L225 Difference]: With dead ends: 9899 [2022-02-10 02:55:33,010 INFO L226 Difference]: Without dead ends: 9893 [2022-02-10 02:55:33,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4476 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3600, Invalid=9972, Unknown=0, NotChecked=0, Total=13572 [2022-02-10 02:55:33,012 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 214 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:33,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 172 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:55:33,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9893 states. [2022-02-10 02:55:33,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9893 to 8395. [2022-02-10 02:55:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8395 states, 8394 states have (on average 3.2122944960686204) internal successors, (26964), 8394 states have internal predecessors, (26964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8395 states to 8395 states and 26964 transitions. [2022-02-10 02:55:33,194 INFO L78 Accepts]: Start accepts. Automaton has 8395 states and 26964 transitions. Word has length 26 [2022-02-10 02:55:33,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:33,194 INFO L470 AbstractCegarLoop]: Abstraction has 8395 states and 26964 transitions. [2022-02-10 02:55:33,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:33,194 INFO L276 IsEmpty]: Start isEmpty. Operand 8395 states and 26964 transitions. [2022-02-10 02:55:33,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:33,205 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:33,205 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:33,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (356)] Ended with exit code 0 [2022-02-10 02:55:33,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359,356 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:33,405 INFO L402 AbstractCegarLoop]: === Iteration 361 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:33,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:33,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2034811061, now seen corresponding path program 355 times [2022-02-10 02:55:33,406 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:33,406 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606503621] [2022-02-10 02:55:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:33,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:33,492 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:33,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:33,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606503621] [2022-02-10 02:55:33,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606503621] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:33,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299302596] [2022-02-10 02:55:33,492 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:55:33,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:33,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:33,493 INFO L229 MonitoredProcess]: Starting monitored process 357 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:33,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (357)] Waiting until timeout for monitored process [2022-02-10 02:55:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:33,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:33,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:33,686 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:33,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:33,728 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:33,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299302596] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:33,728 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:33,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 28 [2022-02-10 02:55:33,729 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672718506] [2022-02-10 02:55:33,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:33,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 02:55:33,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:33,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 02:55:33,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:55:33,729 INFO L87 Difference]: Start difference. First operand 8395 states and 26964 transitions. Second operand has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:34,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:34,926 INFO L93 Difference]: Finished difference Result 10465 states and 32289 transitions. [2022-02-10 02:55:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-10 02:55:34,927 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:34,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:34,945 INFO L225 Difference]: With dead ends: 10465 [2022-02-10 02:55:34,945 INFO L226 Difference]: Without dead ends: 10457 [2022-02-10 02:55:34,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4247 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3353, Invalid=9529, Unknown=0, NotChecked=0, Total=12882 [2022-02-10 02:55:34,947 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 242 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:34,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 128 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:34,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10457 states. [2022-02-10 02:55:35,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10457 to 8912. [2022-02-10 02:55:35,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8912 states, 8911 states have (on average 3.223656155313657) internal successors, (28726), 8911 states have internal predecessors, (28726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:35,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8912 states to 8912 states and 28726 transitions. [2022-02-10 02:55:35,106 INFO L78 Accepts]: Start accepts. Automaton has 8912 states and 28726 transitions. Word has length 26 [2022-02-10 02:55:35,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:35,106 INFO L470 AbstractCegarLoop]: Abstraction has 8912 states and 28726 transitions. [2022-02-10 02:55:35,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:35,106 INFO L276 IsEmpty]: Start isEmpty. Operand 8912 states and 28726 transitions. [2022-02-10 02:55:35,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:35,118 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:35,118 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:35,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (357)] Ended with exit code 0 [2022-02-10 02:55:35,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360,357 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:35,319 INFO L402 AbstractCegarLoop]: === Iteration 362 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:35,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:35,319 INFO L85 PathProgramCache]: Analyzing trace with hash 992699057, now seen corresponding path program 356 times [2022-02-10 02:55:35,319 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:35,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744361782] [2022-02-10 02:55:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:35,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:35,403 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:35,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744361782] [2022-02-10 02:55:35,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744361782] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:35,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709486356] [2022-02-10 02:55:35,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:55:35,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:35,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:35,404 INFO L229 MonitoredProcess]: Starting monitored process 358 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:35,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (358)] Waiting until timeout for monitored process [2022-02-10 02:55:35,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:55:35,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:35,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:35,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:35,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:35,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709486356] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:35,678 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:35,678 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 29 [2022-02-10 02:55:35,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368663179] [2022-02-10 02:55:35,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:35,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 02:55:35,678 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:35,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 02:55:35,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=622, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:55:35,679 INFO L87 Difference]: Start difference. First operand 8912 states and 28726 transitions. Second operand has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:36,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:36,842 INFO L93 Difference]: Finished difference Result 10371 states and 32013 transitions. [2022-02-10 02:55:36,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-10 02:55:36,842 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:36,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:36,859 INFO L225 Difference]: With dead ends: 10371 [2022-02-10 02:55:36,860 INFO L226 Difference]: Without dead ends: 10361 [2022-02-10 02:55:36,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4132 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3217, Invalid=9215, Unknown=0, NotChecked=0, Total=12432 [2022-02-10 02:55:36,861 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 226 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:36,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 134 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10361 states. [2022-02-10 02:55:36,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10361 to 8907. [2022-02-10 02:55:36,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8907 states, 8906 states have (on average 3.2238940040422186) internal successors, (28712), 8906 states have internal predecessors, (28712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:37,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8907 states to 8907 states and 28712 transitions. [2022-02-10 02:55:37,014 INFO L78 Accepts]: Start accepts. Automaton has 8907 states and 28712 transitions. Word has length 26 [2022-02-10 02:55:37,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:37,014 INFO L470 AbstractCegarLoop]: Abstraction has 8907 states and 28712 transitions. [2022-02-10 02:55:37,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:37,014 INFO L276 IsEmpty]: Start isEmpty. Operand 8907 states and 28712 transitions. [2022-02-10 02:55:37,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:37,026 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:37,026 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:37,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (358)] Ended with exit code 0 [2022-02-10 02:55:37,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361,358 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:37,226 INFO L402 AbstractCegarLoop]: === Iteration 363 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:37,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:37,227 INFO L85 PathProgramCache]: Analyzing trace with hash 356232203, now seen corresponding path program 357 times [2022-02-10 02:55:37,227 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:37,227 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838011068] [2022-02-10 02:55:37,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:37,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:37,317 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:37,317 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:37,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838011068] [2022-02-10 02:55:37,317 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838011068] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:37,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079014419] [2022-02-10 02:55:37,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:55:37,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:37,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:37,318 INFO L229 MonitoredProcess]: Starting monitored process 359 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:37,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (359)] Waiting until timeout for monitored process [2022-02-10 02:55:37,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:55:37,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:37,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:37,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:37,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:37,573 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:37,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079014419] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:37,573 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:37,573 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 30 [2022-02-10 02:55:37,573 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992135604] [2022-02-10 02:55:37,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:37,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:55:37,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:37,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:55:37,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=665, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:55:37,574 INFO L87 Difference]: Start difference. First operand 8907 states and 28712 transitions. Second operand has 30 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:38,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:38,642 INFO L93 Difference]: Finished difference Result 10253 states and 31768 transitions. [2022-02-10 02:55:38,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-10 02:55:38,643 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:38,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:38,661 INFO L225 Difference]: With dead ends: 10253 [2022-02-10 02:55:38,661 INFO L226 Difference]: Without dead ends: 10241 [2022-02-10 02:55:38,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4031 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3249, Invalid=8961, Unknown=0, NotChecked=0, Total=12210 [2022-02-10 02:55:38,662 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 174 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:38,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 130 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:38,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10241 states. [2022-02-10 02:55:38,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10241 to 8913. [2022-02-10 02:55:38,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8913 states, 8912 states have (on average 3.2222845601436267) internal successors, (28717), 8912 states have internal predecessors, (28717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:38,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8913 states to 8913 states and 28717 transitions. [2022-02-10 02:55:38,831 INFO L78 Accepts]: Start accepts. Automaton has 8913 states and 28717 transitions. Word has length 26 [2022-02-10 02:55:38,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:38,831 INFO L470 AbstractCegarLoop]: Abstraction has 8913 states and 28717 transitions. [2022-02-10 02:55:38,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:38,831 INFO L276 IsEmpty]: Start isEmpty. Operand 8913 states and 28717 transitions. [2022-02-10 02:55:38,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:38,845 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:38,845 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:38,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (359)] Ended with exit code 0 [2022-02-10 02:55:39,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362,359 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:39,045 INFO L402 AbstractCegarLoop]: === Iteration 364 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:39,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:39,045 INFO L85 PathProgramCache]: Analyzing trace with hash 868680011, now seen corresponding path program 358 times [2022-02-10 02:55:39,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:39,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330814210] [2022-02-10 02:55:39,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:39,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:39,099 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:39,099 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:39,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330814210] [2022-02-10 02:55:39,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330814210] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:39,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404477091] [2022-02-10 02:55:39,099 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:55:39,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:39,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:39,100 INFO L229 MonitoredProcess]: Starting monitored process 360 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:39,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (360)] Waiting until timeout for monitored process [2022-02-10 02:55:39,126 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:55:39,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:39,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:39,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:39,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:39,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404477091] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:39,330 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:39,330 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 11] total 25 [2022-02-10 02:55:39,330 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98416785] [2022-02-10 02:55:39,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:39,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:55:39,331 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:39,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:55:39,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:55:39,331 INFO L87 Difference]: Start difference. First operand 8913 states and 28717 transitions. Second operand has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:40,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:40,221 INFO L93 Difference]: Finished difference Result 15635 states and 49015 transitions. [2022-02-10 02:55:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-10 02:55:40,221 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:40,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:40,250 INFO L225 Difference]: With dead ends: 15635 [2022-02-10 02:55:40,250 INFO L226 Difference]: Without dead ends: 15627 [2022-02-10 02:55:40,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1982 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2094, Invalid=4068, Unknown=0, NotChecked=0, Total=6162 [2022-02-10 02:55:40,251 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 294 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:40,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 274 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:40,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15627 states. [2022-02-10 02:55:40,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15627 to 12748. [2022-02-10 02:55:40,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12748 states, 12747 states have (on average 3.2852435867262884) internal successors, (41877), 12747 states have internal predecessors, (41877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:40,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12748 states to 12748 states and 41877 transitions. [2022-02-10 02:55:40,558 INFO L78 Accepts]: Start accepts. Automaton has 12748 states and 41877 transitions. Word has length 26 [2022-02-10 02:55:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:40,558 INFO L470 AbstractCegarLoop]: Abstraction has 12748 states and 41877 transitions. [2022-02-10 02:55:40,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 12748 states and 41877 transitions. [2022-02-10 02:55:40,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:40,575 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:40,575 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:40,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (360)] Ended with exit code 0 [2022-02-10 02:55:40,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363,360 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:40,776 INFO L402 AbstractCegarLoop]: === Iteration 365 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:40,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:40,776 INFO L85 PathProgramCache]: Analyzing trace with hash -348171411, now seen corresponding path program 359 times [2022-02-10 02:55:40,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:40,776 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158405777] [2022-02-10 02:55:40,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:40,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 27 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:40,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:40,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158405777] [2022-02-10 02:55:40,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158405777] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:40,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198555339] [2022-02-10 02:55:40,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:55:40,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:40,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:40,830 INFO L229 MonitoredProcess]: Starting monitored process 361 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:40,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (361)] Waiting until timeout for monitored process [2022-02-10 02:55:40,858 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:55:40,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:40,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:40,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:41,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 27 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:41,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198555339] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:41,060 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:41,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 11] total 25 [2022-02-10 02:55:41,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776518828] [2022-02-10 02:55:41,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:41,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:55:41,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:41,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:55:41,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:55:41,061 INFO L87 Difference]: Start difference. First operand 12748 states and 41877 transitions. Second operand has 25 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:42,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:42,674 INFO L93 Difference]: Finished difference Result 14359 states and 45454 transitions. [2022-02-10 02:55:42,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-02-10 02:55:42,675 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:42,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:42,700 INFO L225 Difference]: With dead ends: 14359 [2022-02-10 02:55:42,700 INFO L226 Difference]: Without dead ends: 14357 [2022-02-10 02:55:42,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7241 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=4791, Invalid=13299, Unknown=0, NotChecked=0, Total=18090 [2022-02-10 02:55:42,703 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 276 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:42,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 161 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:55:42,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14357 states. [2022-02-10 02:55:42,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14357 to 12329. [2022-02-10 02:55:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12329 states, 12328 states have (on average 3.277255029201817) internal successors, (40402), 12328 states have internal predecessors, (40402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:42,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12329 states to 12329 states and 40402 transitions. [2022-02-10 02:55:42,973 INFO L78 Accepts]: Start accepts. Automaton has 12329 states and 40402 transitions. Word has length 26 [2022-02-10 02:55:42,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:42,974 INFO L470 AbstractCegarLoop]: Abstraction has 12329 states and 40402 transitions. [2022-02-10 02:55:42,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:42,974 INFO L276 IsEmpty]: Start isEmpty. Operand 12329 states and 40402 transitions. [2022-02-10 02:55:42,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:42,989 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:42,989 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:43,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (361)] Ended with exit code 0 [2022-02-10 02:55:43,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 361 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable364 [2022-02-10 02:55:43,190 INFO L402 AbstractCegarLoop]: === Iteration 366 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:43,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:43,190 INFO L85 PathProgramCache]: Analyzing trace with hash 189684167, now seen corresponding path program 360 times [2022-02-10 02:55:43,190 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:43,191 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159668449] [2022-02-10 02:55:43,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:43,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:43,257 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:43,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159668449] [2022-02-10 02:55:43,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159668449] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:43,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207448402] [2022-02-10 02:55:43,257 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:55:43,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:43,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:43,258 INFO L229 MonitoredProcess]: Starting monitored process 362 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:43,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (362)] Waiting until timeout for monitored process [2022-02-10 02:55:43,285 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:55:43,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:43,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:43,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:43,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:43,496 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207448402] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:43,497 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:43,497 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 12] total 26 [2022-02-10 02:55:43,497 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507103653] [2022-02-10 02:55:43,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:43,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:55:43,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:43,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:55:43,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:55:43,497 INFO L87 Difference]: Start difference. First operand 12329 states and 40402 transitions. Second operand has 26 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 26 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:45,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:45,062 INFO L93 Difference]: Finished difference Result 14740 states and 46909 transitions. [2022-02-10 02:55:45,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-02-10 02:55:45,062 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 26 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:45,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:45,089 INFO L225 Difference]: With dead ends: 14740 [2022-02-10 02:55:45,089 INFO L226 Difference]: Without dead ends: 14736 [2022-02-10 02:55:45,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6314 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=4210, Invalid=12046, Unknown=0, NotChecked=0, Total=16256 [2022-02-10 02:55:45,090 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 261 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:45,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 158 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:55:45,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14736 states. [2022-02-10 02:55:45,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14736 to 12699. [2022-02-10 02:55:45,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12699 states, 12698 states have (on average 3.2850842652386203) internal successors, (41714), 12698 states have internal predecessors, (41714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:45,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12699 states to 12699 states and 41714 transitions. [2022-02-10 02:55:45,318 INFO L78 Accepts]: Start accepts. Automaton has 12699 states and 41714 transitions. Word has length 26 [2022-02-10 02:55:45,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:45,318 INFO L470 AbstractCegarLoop]: Abstraction has 12699 states and 41714 transitions. [2022-02-10 02:55:45,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 26 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:45,318 INFO L276 IsEmpty]: Start isEmpty. Operand 12699 states and 41714 transitions. [2022-02-10 02:55:45,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:45,334 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:45,334 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:45,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (362)] Ended with exit code 0 [2022-02-10 02:55:45,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 362 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable365 [2022-02-10 02:55:45,535 INFO L402 AbstractCegarLoop]: === Iteration 367 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:45,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:45,535 INFO L85 PathProgramCache]: Analyzing trace with hash -316662099, now seen corresponding path program 361 times [2022-02-10 02:55:45,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:45,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990254212] [2022-02-10 02:55:45,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:45,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:45,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:45,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990254212] [2022-02-10 02:55:45,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990254212] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:45,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766264425] [2022-02-10 02:55:45,601 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:55:45,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:45,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:45,602 INFO L229 MonitoredProcess]: Starting monitored process 363 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:45,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (363)] Waiting until timeout for monitored process [2022-02-10 02:55:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:45,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:45,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:45,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:45,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766264425] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:45,841 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:45,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 13] total 27 [2022-02-10 02:55:45,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064543767] [2022-02-10 02:55:45,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:45,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:55:45,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:45,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:55:45,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:55:45,842 INFO L87 Difference]: Start difference. First operand 12699 states and 41714 transitions. Second operand has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 27 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:47,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:47,306 INFO L93 Difference]: Finished difference Result 15353 states and 49077 transitions. [2022-02-10 02:55:47,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-10 02:55:47,307 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 27 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:47,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:47,334 INFO L225 Difference]: With dead ends: 15353 [2022-02-10 02:55:47,335 INFO L226 Difference]: Without dead ends: 15347 [2022-02-10 02:55:47,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5556 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3722, Invalid=11040, Unknown=0, NotChecked=0, Total=14762 [2022-02-10 02:55:47,335 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 248 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:47,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 169 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:55:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15347 states. [2022-02-10 02:55:47,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15347 to 13328. [2022-02-10 02:55:47,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13328 states, 13327 states have (on average 3.2908381481203572) internal successors, (43857), 13327 states have internal predecessors, (43857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:47,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13328 states to 13328 states and 43857 transitions. [2022-02-10 02:55:47,592 INFO L78 Accepts]: Start accepts. Automaton has 13328 states and 43857 transitions. Word has length 26 [2022-02-10 02:55:47,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:47,592 INFO L470 AbstractCegarLoop]: Abstraction has 13328 states and 43857 transitions. [2022-02-10 02:55:47,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 27 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:47,592 INFO L276 IsEmpty]: Start isEmpty. Operand 13328 states and 43857 transitions. [2022-02-10 02:55:47,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:47,611 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:47,611 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:47,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (363)] Ended with exit code 0 [2022-02-10 02:55:47,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 363 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable366 [2022-02-10 02:55:47,811 INFO L402 AbstractCegarLoop]: === Iteration 368 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:47,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:47,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1166472839, now seen corresponding path program 362 times [2022-02-10 02:55:47,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:47,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877283483] [2022-02-10 02:55:47,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:47,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:47,882 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:47,882 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:47,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877283483] [2022-02-10 02:55:47,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877283483] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:47,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783896626] [2022-02-10 02:55:47,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:55:47,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:47,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:47,883 INFO L229 MonitoredProcess]: Starting monitored process 364 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:47,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (364)] Waiting until timeout for monitored process [2022-02-10 02:55:47,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:55:47,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:47,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:47,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:48,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:48,123 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:48,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783896626] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:48,123 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:48,123 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 14] total 28 [2022-02-10 02:55:48,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30862209] [2022-02-10 02:55:48,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:48,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 02:55:48,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:48,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 02:55:48,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=582, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:55:48,124 INFO L87 Difference]: Start difference. First operand 13328 states and 43857 transitions. Second operand has 28 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:49,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:49,519 INFO L93 Difference]: Finished difference Result 16199 states and 51952 transitions. [2022-02-10 02:55:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-10 02:55:49,520 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:49,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:49,556 INFO L225 Difference]: With dead ends: 16199 [2022-02-10 02:55:49,556 INFO L226 Difference]: Without dead ends: 16191 [2022-02-10 02:55:49,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4948 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3335, Invalid=10237, Unknown=0, NotChecked=0, Total=13572 [2022-02-10 02:55:49,557 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 296 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:49,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 156 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:49,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16191 states. [2022-02-10 02:55:49,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16191 to 14597. [2022-02-10 02:55:49,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14597 states, 14596 states have (on average 3.2996026308577693) internal successors, (48161), 14596 states have internal predecessors, (48161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:49,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14597 states to 14597 states and 48161 transitions. [2022-02-10 02:55:49,871 INFO L78 Accepts]: Start accepts. Automaton has 14597 states and 48161 transitions. Word has length 26 [2022-02-10 02:55:49,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:49,871 INFO L470 AbstractCegarLoop]: Abstraction has 14597 states and 48161 transitions. [2022-02-10 02:55:49,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:49,871 INFO L276 IsEmpty]: Start isEmpty. Operand 14597 states and 48161 transitions. [2022-02-10 02:55:49,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:49,892 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:49,892 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:49,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (364)] Forceful destruction successful, exit code 0 [2022-02-10 02:55:50,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367,364 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:50,092 INFO L402 AbstractCegarLoop]: === Iteration 369 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:50,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:50,093 INFO L85 PathProgramCache]: Analyzing trace with hash -100984339, now seen corresponding path program 363 times [2022-02-10 02:55:50,093 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:50,093 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707845605] [2022-02-10 02:55:50,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:50,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:50,170 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:50,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707845605] [2022-02-10 02:55:50,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707845605] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:50,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408659864] [2022-02-10 02:55:50,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:55:50,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:50,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:50,172 INFO L229 MonitoredProcess]: Starting monitored process 365 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:50,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (365)] Waiting until timeout for monitored process [2022-02-10 02:55:50,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:55:50,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:50,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:50,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:50,379 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:50,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:50,422 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:50,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408659864] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:50,422 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:50,422 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 29 [2022-02-10 02:55:50,422 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040732638] [2022-02-10 02:55:50,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:50,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 02:55:50,422 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:50,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 02:55:50,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:55:50,423 INFO L87 Difference]: Start difference. First operand 14597 states and 48161 transitions. Second operand has 29 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:51,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:51,729 INFO L93 Difference]: Finished difference Result 17448 states and 56176 transitions. [2022-02-10 02:55:51,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-10 02:55:51,729 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:51,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:51,760 INFO L225 Difference]: With dead ends: 17448 [2022-02-10 02:55:51,761 INFO L226 Difference]: Without dead ends: 17438 [2022-02-10 02:55:51,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4494 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3056, Invalid=9600, Unknown=0, NotChecked=0, Total=12656 [2022-02-10 02:55:51,761 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 268 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:51,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 137 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:51,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17438 states. [2022-02-10 02:55:51,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17438 to 15791. [2022-02-10 02:55:52,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15791 states, 15790 states have (on average 3.3087397086763772) internal successors, (52245), 15790 states have internal predecessors, (52245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:52,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15791 states to 15791 states and 52245 transitions. [2022-02-10 02:55:52,049 INFO L78 Accepts]: Start accepts. Automaton has 15791 states and 52245 transitions. Word has length 26 [2022-02-10 02:55:52,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:52,049 INFO L470 AbstractCegarLoop]: Abstraction has 15791 states and 52245 transitions. [2022-02-10 02:55:52,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:52,049 INFO L276 IsEmpty]: Start isEmpty. Operand 15791 states and 52245 transitions. [2022-02-10 02:55:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:52,071 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:52,071 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:52,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (365)] Ended with exit code 0 [2022-02-10 02:55:52,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368,365 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:52,272 INFO L402 AbstractCegarLoop]: === Iteration 370 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:52,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:52,272 INFO L85 PathProgramCache]: Analyzing trace with hash -737451193, now seen corresponding path program 364 times [2022-02-10 02:55:52,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:52,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158429808] [2022-02-10 02:55:52,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:52,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:52,356 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:52,356 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:52,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158429808] [2022-02-10 02:55:52,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158429808] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:52,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201396637] [2022-02-10 02:55:52,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:55:52,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:52,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:52,357 INFO L229 MonitoredProcess]: Starting monitored process 366 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:52,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (366)] Waiting until timeout for monitored process [2022-02-10 02:55:52,383 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:55:52,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:52,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:52,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:52,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:55:52,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201396637] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:52,615 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:52,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 30 [2022-02-10 02:55:52,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938853701] [2022-02-10 02:55:52,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:52,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:55:52,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:55:52,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=675, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:55:52,616 INFO L87 Difference]: Start difference. First operand 15791 states and 52245 transitions. Second operand has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:53,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:53,825 INFO L93 Difference]: Finished difference Result 17506 states and 56370 transitions. [2022-02-10 02:55:53,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-10 02:55:53,825 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:53,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:53,937 INFO L225 Difference]: With dead ends: 17506 [2022-02-10 02:55:53,937 INFO L226 Difference]: Without dead ends: 17494 [2022-02-10 02:55:53,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4201 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2891, Invalid=9099, Unknown=0, NotChecked=0, Total=11990 [2022-02-10 02:55:53,938 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 216 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:53,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 157 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:53,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17494 states. [2022-02-10 02:55:54,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17494 to 15843. [2022-02-10 02:55:54,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15843 states, 15842 states have (on average 3.309619997475066) internal successors, (52431), 15842 states have internal predecessors, (52431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:54,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15843 states to 15843 states and 52431 transitions. [2022-02-10 02:55:54,204 INFO L78 Accepts]: Start accepts. Automaton has 15843 states and 52431 transitions. Word has length 26 [2022-02-10 02:55:54,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:54,204 INFO L470 AbstractCegarLoop]: Abstraction has 15843 states and 52431 transitions. [2022-02-10 02:55:54,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:54,204 INFO L276 IsEmpty]: Start isEmpty. Operand 15843 states and 52431 transitions. [2022-02-10 02:55:54,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 02:55:54,227 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:54,227 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:54,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (366)] Forceful destruction successful, exit code 0 [2022-02-10 02:55:54,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 366 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable369 [2022-02-10 02:55:54,427 INFO L402 AbstractCegarLoop]: === Iteration 371 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:54,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:54,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1006912813, now seen corresponding path program 365 times [2022-02-10 02:55:54,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:54,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411343047] [2022-02-10 02:55:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:54,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:54,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:54,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411343047] [2022-02-10 02:55:54,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411343047] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:54,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426938321] [2022-02-10 02:55:54,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:55:54,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:54,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:54,522 INFO L229 MonitoredProcess]: Starting monitored process 367 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:54,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (367)] Waiting until timeout for monitored process [2022-02-10 02:55:54,549 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:55:54,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:54,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:54,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:54,744 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:54,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:54,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426938321] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:54,788 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:54,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 31 [2022-02-10 02:55:54,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336812814] [2022-02-10 02:55:54,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:54,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 02:55:54,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:54,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 02:55:54,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=717, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:55:54,789 INFO L87 Difference]: Start difference. First operand 15843 states and 52431 transitions. Second operand has 31 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:55,859 INFO L93 Difference]: Finished difference Result 17415 states and 56257 transitions. [2022-02-10 02:55:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-10 02:55:55,860 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 02:55:55,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:55,896 INFO L225 Difference]: With dead ends: 17415 [2022-02-10 02:55:55,896 INFO L226 Difference]: Without dead ends: 17401 [2022-02-10 02:55:55,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3991 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2902, Invalid=8654, Unknown=0, NotChecked=0, Total=11556 [2022-02-10 02:55:55,898 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 177 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:55,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 133 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:55,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17401 states. [2022-02-10 02:55:56,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17401 to 15830. [2022-02-10 02:55:56,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15830 states, 15829 states have (on average 3.3111377850780213) internal successors, (52412), 15829 states have internal predecessors, (52412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:56,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15830 states to 15830 states and 52412 transitions. [2022-02-10 02:55:56,255 INFO L78 Accepts]: Start accepts. Automaton has 15830 states and 52412 transitions. Word has length 26 [2022-02-10 02:55:56,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:56,255 INFO L470 AbstractCegarLoop]: Abstraction has 15830 states and 52412 transitions. [2022-02-10 02:55:56,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:56,255 INFO L276 IsEmpty]: Start isEmpty. Operand 15830 states and 52412 transitions. [2022-02-10 02:55:56,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:55:56,278 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:56,278 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:56,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (367)] Ended with exit code 0 [2022-02-10 02:55:56,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 367 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable370 [2022-02-10 02:55:56,479 INFO L402 AbstractCegarLoop]: === Iteration 372 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:56,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:56,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1042594513, now seen corresponding path program 366 times [2022-02-10 02:55:56,479 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:56,479 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736727758] [2022-02-10 02:55:56,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:56,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:56,731 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:56,731 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:56,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736727758] [2022-02-10 02:55:56,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736727758] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:56,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792597493] [2022-02-10 02:55:56,731 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:55:56,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:56,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:56,732 INFO L229 MonitoredProcess]: Starting monitored process 368 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:56,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (368)] Waiting until timeout for monitored process [2022-02-10 02:55:56,760 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:55:56,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:56,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:55:56,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:57,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:57,471 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:57,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792597493] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:57,472 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:57,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 33 [2022-02-10 02:55:57,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146724878] [2022-02-10 02:55:57,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:57,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:55:57,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:57,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:55:57,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1036, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:55:57,472 INFO L87 Difference]: Start difference. First operand 15830 states and 52412 transitions. Second operand has 34 states, 34 states have (on average 1.5) internal successors, (51), 33 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:58,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:58,496 INFO L93 Difference]: Finished difference Result 16141 states and 52774 transitions. [2022-02-10 02:55:58,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 02:55:58,496 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5) internal successors, (51), 33 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:55:58,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:58,533 INFO L225 Difference]: With dead ends: 16141 [2022-02-10 02:55:58,534 INFO L226 Difference]: Without dead ends: 16121 [2022-02-10 02:55:58,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=1746, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:55:58,534 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 202 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:58,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 777 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:55:58,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16121 states. [2022-02-10 02:55:58,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16121 to 15866. [2022-02-10 02:55:58,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15866 states, 15865 states have (on average 3.3029940119760477) internal successors, (52402), 15865 states have internal predecessors, (52402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:58,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15866 states to 15866 states and 52402 transitions. [2022-02-10 02:55:58,864 INFO L78 Accepts]: Start accepts. Automaton has 15866 states and 52402 transitions. Word has length 27 [2022-02-10 02:55:58,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:58,864 INFO L470 AbstractCegarLoop]: Abstraction has 15866 states and 52402 transitions. [2022-02-10 02:55:58,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5) internal successors, (51), 33 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:58,865 INFO L276 IsEmpty]: Start isEmpty. Operand 15866 states and 52402 transitions. [2022-02-10 02:55:58,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:55:58,890 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:58,890 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:58,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (368)] Ended with exit code 0 [2022-02-10 02:55:59,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371,368 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:59,090 INFO L402 AbstractCegarLoop]: === Iteration 373 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:59,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:59,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1849286993, now seen corresponding path program 367 times [2022-02-10 02:55:59,091 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:59,091 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257689799] [2022-02-10 02:55:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:59,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:59,303 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:59,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257689799] [2022-02-10 02:55:59,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257689799] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:59,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705080621] [2022-02-10 02:55:59,303 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:55:59,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:59,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:59,304 INFO L229 MonitoredProcess]: Starting monitored process 369 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:59,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (369)] Waiting until timeout for monitored process [2022-02-10 02:55:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:59,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:55:59,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:59,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:00,170 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:00,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705080621] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:00,171 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:00,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 02:56:00,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268985315] [2022-02-10 02:56:00,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:00,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:56:00,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:00,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:56:00,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:56:00,172 INFO L87 Difference]: Start difference. First operand 15866 states and 52402 transitions. Second operand has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 40 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:00,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:00,927 INFO L93 Difference]: Finished difference Result 16277 states and 53173 transitions. [2022-02-10 02:56:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:56:00,928 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 40 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:00,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:01,046 INFO L225 Difference]: With dead ends: 16277 [2022-02-10 02:56:01,046 INFO L226 Difference]: Without dead ends: 16273 [2022-02-10 02:56:01,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:56:01,046 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 246 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:01,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 1188 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:56:01,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16273 states. [2022-02-10 02:56:01,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16273 to 16009. [2022-02-10 02:56:01,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16009 states, 16008 states have (on average 3.304472763618191) internal successors, (52898), 16008 states have internal predecessors, (52898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:01,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16009 states to 16009 states and 52898 transitions. [2022-02-10 02:56:01,345 INFO L78 Accepts]: Start accepts. Automaton has 16009 states and 52898 transitions. Word has length 27 [2022-02-10 02:56:01,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:01,345 INFO L470 AbstractCegarLoop]: Abstraction has 16009 states and 52898 transitions. [2022-02-10 02:56:01,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 40 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:01,346 INFO L276 IsEmpty]: Start isEmpty. Operand 16009 states and 52898 transitions. [2022-02-10 02:56:01,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:01,368 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:01,368 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:01,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (369)] Ended with exit code 0 [2022-02-10 02:56:01,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372,369 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:01,569 INFO L402 AbstractCegarLoop]: === Iteration 374 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:01,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:01,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1005278613, now seen corresponding path program 368 times [2022-02-10 02:56:01,570 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:01,570 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851200108] [2022-02-10 02:56:01,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:01,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:01,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:01,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851200108] [2022-02-10 02:56:01,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851200108] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:01,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625716602] [2022-02-10 02:56:01,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:56:01,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:01,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:01,805 INFO L229 MonitoredProcess]: Starting monitored process 370 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:01,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (370)] Waiting until timeout for monitored process [2022-02-10 02:56:01,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:56:01,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:01,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:01,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:02,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:02,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625716602] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:02,664 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:02,664 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 02:56:02,664 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493375232] [2022-02-10 02:56:02,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:02,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:56:02,664 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:02,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:56:02,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:56:02,665 INFO L87 Difference]: Start difference. First operand 16009 states and 52898 transitions. Second operand has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 40 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:03,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:03,366 INFO L93 Difference]: Finished difference Result 16268 states and 53164 transitions. [2022-02-10 02:56:03,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:56:03,367 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 40 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:03,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:03,405 INFO L225 Difference]: With dead ends: 16268 [2022-02-10 02:56:03,406 INFO L226 Difference]: Without dead ends: 16257 [2022-02-10 02:56:03,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=154, Invalid=1826, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:56:03,406 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 278 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:03,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 1008 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1405 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:56:03,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16257 states. [2022-02-10 02:56:03,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16257 to 15884. [2022-02-10 02:56:03,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15884 states, 15883 states have (on average 3.299691494050242) internal successors, (52409), 15883 states have internal predecessors, (52409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:03,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15884 states to 15884 states and 52409 transitions. [2022-02-10 02:56:03,804 INFO L78 Accepts]: Start accepts. Automaton has 15884 states and 52409 transitions. Word has length 27 [2022-02-10 02:56:03,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:03,804 INFO L470 AbstractCegarLoop]: Abstraction has 15884 states and 52409 transitions. [2022-02-10 02:56:03,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 40 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:03,804 INFO L276 IsEmpty]: Start isEmpty. Operand 15884 states and 52409 transitions. [2022-02-10 02:56:03,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:03,829 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:03,829 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:03,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (370)] Ended with exit code 0 [2022-02-10 02:56:04,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373,370 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:04,030 INFO L402 AbstractCegarLoop]: === Iteration 375 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:04,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:04,030 INFO L85 PathProgramCache]: Analyzing trace with hash 451215147, now seen corresponding path program 369 times [2022-02-10 02:56:04,030 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:04,030 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372734848] [2022-02-10 02:56:04,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:04,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:04,260 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:04,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:04,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372734848] [2022-02-10 02:56:04,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372734848] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:04,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793907951] [2022-02-10 02:56:04,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:56:04,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:04,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:04,262 INFO L229 MonitoredProcess]: Starting monitored process 371 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:04,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (371)] Waiting until timeout for monitored process [2022-02-10 02:56:04,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:56:04,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:04,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:04,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:04,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:05,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793907951] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:05,153 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:05,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-10 02:56:05,153 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91327741] [2022-02-10 02:56:05,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:05,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:56:05,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:05,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:56:05,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:56:05,154 INFO L87 Difference]: Start difference. First operand 15884 states and 52409 transitions. Second operand has 40 states, 40 states have (on average 1.45) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:05,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:05,919 INFO L93 Difference]: Finished difference Result 16145 states and 52678 transitions. [2022-02-10 02:56:05,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:56:05,920 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.45) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:05,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:05,953 INFO L225 Difference]: With dead ends: 16145 [2022-02-10 02:56:05,953 INFO L226 Difference]: Without dead ends: 16141 [2022-02-10 02:56:05,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=1752, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:56:05,954 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 221 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:05,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 1070 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:56:05,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16141 states. [2022-02-10 02:56:06,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16141 to 15884. [2022-02-10 02:56:06,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15884 states, 15883 states have (on average 3.299691494050242) internal successors, (52409), 15883 states have internal predecessors, (52409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:06,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15884 states to 15884 states and 52409 transitions. [2022-02-10 02:56:06,312 INFO L78 Accepts]: Start accepts. Automaton has 15884 states and 52409 transitions. Word has length 27 [2022-02-10 02:56:06,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:06,312 INFO L470 AbstractCegarLoop]: Abstraction has 15884 states and 52409 transitions. [2022-02-10 02:56:06,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.45) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:06,312 INFO L276 IsEmpty]: Start isEmpty. Operand 15884 states and 52409 transitions. [2022-02-10 02:56:06,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:06,335 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:06,335 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:06,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (371)] Ended with exit code 0 [2022-02-10 02:56:06,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374,371 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:06,535 INFO L402 AbstractCegarLoop]: === Iteration 376 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:06,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:06,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1247662545, now seen corresponding path program 370 times [2022-02-10 02:56:06,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:06,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035589370] [2022-02-10 02:56:06,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:06,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:06,774 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:06,774 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:06,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035589370] [2022-02-10 02:56:06,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035589370] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:06,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960567629] [2022-02-10 02:56:06,774 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:56:06,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:06,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:06,775 INFO L229 MonitoredProcess]: Starting monitored process 372 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:06,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (372)] Waiting until timeout for monitored process [2022-02-10 02:56:06,802 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:56:06,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:06,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:06,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:07,108 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:07,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:07,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960567629] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:07,634 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:07,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-10 02:56:07,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819424640] [2022-02-10 02:56:07,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:07,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 02:56:07,634 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:07,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 02:56:07,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:56:07,634 INFO L87 Difference]: Start difference. First operand 15884 states and 52409 transitions. Second operand has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 38 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:08,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:08,402 INFO L93 Difference]: Finished difference Result 16151 states and 52684 transitions. [2022-02-10 02:56:08,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 02:56:08,402 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 38 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:08,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:08,436 INFO L225 Difference]: With dead ends: 16151 [2022-02-10 02:56:08,436 INFO L226 Difference]: Without dead ends: 16147 [2022-02-10 02:56:08,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=141, Invalid=1751, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:56:08,437 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 257 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:08,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 952 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:56:08,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16147 states. [2022-02-10 02:56:08,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16147 to 15884. [2022-02-10 02:56:08,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15884 states, 15883 states have (on average 3.299691494050242) internal successors, (52409), 15883 states have internal predecessors, (52409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:08,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15884 states to 15884 states and 52409 transitions. [2022-02-10 02:56:08,831 INFO L78 Accepts]: Start accepts. Automaton has 15884 states and 52409 transitions. Word has length 27 [2022-02-10 02:56:08,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:08,832 INFO L470 AbstractCegarLoop]: Abstraction has 15884 states and 52409 transitions. [2022-02-10 02:56:08,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 38 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:08,832 INFO L276 IsEmpty]: Start isEmpty. Operand 15884 states and 52409 transitions. [2022-02-10 02:56:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:08,857 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:08,857 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:08,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (372)] Ended with exit code 0 [2022-02-10 02:56:09,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 372 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable375 [2022-02-10 02:56:09,057 INFO L402 AbstractCegarLoop]: === Iteration 377 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:09,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:09,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1921703851, now seen corresponding path program 371 times [2022-02-10 02:56:09,058 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:09,058 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737835831] [2022-02-10 02:56:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:09,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:09,299 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:09,299 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:09,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737835831] [2022-02-10 02:56:09,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737835831] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:09,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080112566] [2022-02-10 02:56:09,299 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:56:09,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:09,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:09,300 INFO L229 MonitoredProcess]: Starting monitored process 373 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:09,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (373)] Waiting until timeout for monitored process [2022-02-10 02:56:09,330 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:56:09,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:09,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:09,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:09,726 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:09,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:10,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080112566] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:10,242 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:10,243 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 37 [2022-02-10 02:56:10,243 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354734696] [2022-02-10 02:56:10,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:10,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 02:56:10,243 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:10,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 02:56:10,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1300, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:56:10,243 INFO L87 Difference]: Start difference. First operand 15884 states and 52409 transitions. Second operand has 38 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:11,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:11,090 INFO L93 Difference]: Finished difference Result 16157 states and 52690 transitions. [2022-02-10 02:56:11,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:56:11,090 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:11,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:11,124 INFO L225 Difference]: With dead ends: 16157 [2022-02-10 02:56:11,124 INFO L226 Difference]: Without dead ends: 16153 [2022-02-10 02:56:11,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:56:11,125 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 242 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:11,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 946 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:56:11,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16153 states. [2022-02-10 02:56:11,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16153 to 15884. [2022-02-10 02:56:11,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15884 states, 15883 states have (on average 3.299691494050242) internal successors, (52409), 15883 states have internal predecessors, (52409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15884 states to 15884 states and 52409 transitions. [2022-02-10 02:56:11,411 INFO L78 Accepts]: Start accepts. Automaton has 15884 states and 52409 transitions. Word has length 27 [2022-02-10 02:56:11,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:11,411 INFO L470 AbstractCegarLoop]: Abstraction has 15884 states and 52409 transitions. [2022-02-10 02:56:11,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:11,411 INFO L276 IsEmpty]: Start isEmpty. Operand 15884 states and 52409 transitions. [2022-02-10 02:56:11,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:11,433 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:11,433 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:11,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (373)] Ended with exit code 0 [2022-02-10 02:56:11,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376,373 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:11,634 INFO L402 AbstractCegarLoop]: === Iteration 378 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:11,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:11,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1387814319, now seen corresponding path program 372 times [2022-02-10 02:56:11,634 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:11,634 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474773427] [2022-02-10 02:56:11,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:11,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:11,881 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:11,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474773427] [2022-02-10 02:56:11,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474773427] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:11,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174727144] [2022-02-10 02:56:11,882 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:56:11,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:11,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:11,883 INFO L229 MonitoredProcess]: Starting monitored process 374 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:11,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (374)] Waiting until timeout for monitored process [2022-02-10 02:56:11,912 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:56:11,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:11,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:11,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:12,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:12,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174727144] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:12,758 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:12,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2022-02-10 02:56:12,758 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075787200] [2022-02-10 02:56:12,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:12,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:56:12,758 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:12,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:56:12,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:56:12,759 INFO L87 Difference]: Start difference. First operand 15884 states and 52409 transitions. Second operand has 37 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 36 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:13,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:13,687 INFO L93 Difference]: Finished difference Result 16163 states and 52696 transitions. [2022-02-10 02:56:13,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 02:56:13,687 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 36 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:13,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:13,724 INFO L225 Difference]: With dead ends: 16163 [2022-02-10 02:56:13,724 INFO L226 Difference]: Without dead ends: 16159 [2022-02-10 02:56:13,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=143, Invalid=1749, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:56:13,724 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 248 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:13,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 808 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:56:13,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16159 states. [2022-02-10 02:56:13,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16159 to 15884. [2022-02-10 02:56:14,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15884 states, 15883 states have (on average 3.299691494050242) internal successors, (52409), 15883 states have internal predecessors, (52409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15884 states to 15884 states and 52409 transitions. [2022-02-10 02:56:14,065 INFO L78 Accepts]: Start accepts. Automaton has 15884 states and 52409 transitions. Word has length 27 [2022-02-10 02:56:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:14,065 INFO L470 AbstractCegarLoop]: Abstraction has 15884 states and 52409 transitions. [2022-02-10 02:56:14,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 36 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:14,065 INFO L276 IsEmpty]: Start isEmpty. Operand 15884 states and 52409 transitions. [2022-02-10 02:56:14,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:14,094 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:14,094 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:14,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (374)] Ended with exit code 0 [2022-02-10 02:56:14,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 374 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable377 [2022-02-10 02:56:14,295 INFO L402 AbstractCegarLoop]: === Iteration 379 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:14,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:14,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2017108011, now seen corresponding path program 373 times [2022-02-10 02:56:14,295 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:14,295 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281255165] [2022-02-10 02:56:14,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:14,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:14,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:14,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281255165] [2022-02-10 02:56:14,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281255165] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:14,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895028802] [2022-02-10 02:56:14,583 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:56:14,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:14,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:14,584 INFO L229 MonitoredProcess]: Starting monitored process 375 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:14,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (375)] Waiting until timeout for monitored process [2022-02-10 02:56:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:14,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:14,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:14,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:15,359 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:15,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895028802] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:15,359 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:15,359 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2022-02-10 02:56:15,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678483420] [2022-02-10 02:56:15,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:15,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:56:15,360 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:15,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:56:15,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1164, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:56:15,360 INFO L87 Difference]: Start difference. First operand 15884 states and 52409 transitions. Second operand has 36 states, 36 states have (on average 1.5) internal successors, (54), 35 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:16,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:16,423 INFO L93 Difference]: Finished difference Result 16154 states and 52683 transitions. [2022-02-10 02:56:16,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 02:56:16,423 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5) internal successors, (54), 35 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:16,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:16,456 INFO L225 Difference]: With dead ends: 16154 [2022-02-10 02:56:16,456 INFO L226 Difference]: Without dead ends: 16150 [2022-02-10 02:56:16,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=1748, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:56:16,456 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 236 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:16,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 821 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:56:16,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16150 states. [2022-02-10 02:56:16,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16150 to 15884. [2022-02-10 02:56:16,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15884 states, 15883 states have (on average 3.299691494050242) internal successors, (52409), 15883 states have internal predecessors, (52409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:16,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15884 states to 15884 states and 52409 transitions. [2022-02-10 02:56:16,745 INFO L78 Accepts]: Start accepts. Automaton has 15884 states and 52409 transitions. Word has length 27 [2022-02-10 02:56:16,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:16,745 INFO L470 AbstractCegarLoop]: Abstraction has 15884 states and 52409 transitions. [2022-02-10 02:56:16,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5) internal successors, (54), 35 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:16,745 INFO L276 IsEmpty]: Start isEmpty. Operand 15884 states and 52409 transitions. [2022-02-10 02:56:16,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:16,770 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:16,770 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:16,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (375)] Ended with exit code 0 [2022-02-10 02:56:16,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 375 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable378 [2022-02-10 02:56:16,970 INFO L402 AbstractCegarLoop]: === Iteration 380 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:16,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:16,970 INFO L85 PathProgramCache]: Analyzing trace with hash 50375983, now seen corresponding path program 374 times [2022-02-10 02:56:16,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:16,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45832276] [2022-02-10 02:56:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:16,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:17,218 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:17,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45832276] [2022-02-10 02:56:17,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45832276] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:17,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112056251] [2022-02-10 02:56:17,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:56:17,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:17,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:17,219 INFO L229 MonitoredProcess]: Starting monitored process 376 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:17,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (376)] Waiting until timeout for monitored process [2022-02-10 02:56:17,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:56:17,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:17,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:17,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:17,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:17,982 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112056251] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:17,983 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:17,983 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2022-02-10 02:56:17,983 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080458085] [2022-02-10 02:56:17,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:17,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:56:17,983 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:17,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:56:17,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1099, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:56:17,983 INFO L87 Difference]: Start difference. First operand 15884 states and 52409 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:19,114 INFO L93 Difference]: Finished difference Result 16085 states and 52613 transitions. [2022-02-10 02:56:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 02:56:19,114 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:19,146 INFO L225 Difference]: With dead ends: 16085 [2022-02-10 02:56:19,146 INFO L226 Difference]: Without dead ends: 16081 [2022-02-10 02:56:19,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=145, Invalid=1747, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:56:19,147 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 182 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:19,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 808 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:56:19,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16081 states. [2022-02-10 02:56:19,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16081 to 15885. [2022-02-10 02:56:19,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15885 states, 15884 states have (on average 3.2995467136741374) internal successors, (52410), 15884 states have internal predecessors, (52410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:19,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15885 states to 15885 states and 52410 transitions. [2022-02-10 02:56:19,517 INFO L78 Accepts]: Start accepts. Automaton has 15885 states and 52410 transitions. Word has length 27 [2022-02-10 02:56:19,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:19,517 INFO L470 AbstractCegarLoop]: Abstraction has 15885 states and 52410 transitions. [2022-02-10 02:56:19,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:19,517 INFO L276 IsEmpty]: Start isEmpty. Operand 15885 states and 52410 transitions. [2022-02-10 02:56:19,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:19,539 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:19,539 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:19,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (376)] Ended with exit code 0 [2022-02-10 02:56:19,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 376 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable379 [2022-02-10 02:56:19,740 INFO L402 AbstractCegarLoop]: === Iteration 381 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:19,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:19,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1523852693, now seen corresponding path program 375 times [2022-02-10 02:56:19,741 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:19,741 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602621231] [2022-02-10 02:56:19,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:19,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:19,955 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:19,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602621231] [2022-02-10 02:56:19,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602621231] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:19,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051823953] [2022-02-10 02:56:19,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:56:19,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:19,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:19,956 INFO L229 MonitoredProcess]: Starting monitored process 377 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:19,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (377)] Waiting until timeout for monitored process [2022-02-10 02:56:20,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:56:20,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:20,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:20,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:20,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:21,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051823953] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:21,017 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:21,017 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 18] total 40 [2022-02-10 02:56:21,017 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334527017] [2022-02-10 02:56:21,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:21,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:56:21,018 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:21,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:56:21,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:56:21,018 INFO L87 Difference]: Start difference. First operand 15885 states and 52410 transitions. Second operand has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:21,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:21,550 INFO L93 Difference]: Finished difference Result 16335 states and 53461 transitions. [2022-02-10 02:56:21,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:56:21,550 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:21,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:21,587 INFO L225 Difference]: With dead ends: 16335 [2022-02-10 02:56:21,587 INFO L226 Difference]: Without dead ends: 16331 [2022-02-10 02:56:21,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 21 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=1672, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:56:21,587 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 218 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:21,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 709 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:56:21,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16331 states. [2022-02-10 02:56:21,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16331 to 16030. [2022-02-10 02:56:21,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16030 states, 16029 states have (on average 3.3019527107118347) internal successors, (52927), 16029 states have internal predecessors, (52927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:21,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16030 states to 16030 states and 52927 transitions. [2022-02-10 02:56:21,916 INFO L78 Accepts]: Start accepts. Automaton has 16030 states and 52927 transitions. Word has length 27 [2022-02-10 02:56:21,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:21,917 INFO L470 AbstractCegarLoop]: Abstraction has 16030 states and 52927 transitions. [2022-02-10 02:56:21,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:21,917 INFO L276 IsEmpty]: Start isEmpty. Operand 16030 states and 52927 transitions. [2022-02-10 02:56:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:21,947 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:21,947 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:21,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (377)] Forceful destruction successful, exit code 0 [2022-02-10 02:56:22,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 377 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable380 [2022-02-10 02:56:22,170 INFO L402 AbstractCegarLoop]: === Iteration 382 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:22,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:22,170 INFO L85 PathProgramCache]: Analyzing trace with hash -679844313, now seen corresponding path program 376 times [2022-02-10 02:56:22,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:22,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977045810] [2022-02-10 02:56:22,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:22,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:22,406 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:22,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977045810] [2022-02-10 02:56:22,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977045810] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:22,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830943955] [2022-02-10 02:56:22,407 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:56:22,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:22,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:22,408 INFO L229 MonitoredProcess]: Starting monitored process 378 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:22,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (378)] Waiting until timeout for monitored process [2022-02-10 02:56:22,436 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:56:22,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:22,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:22,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:22,895 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:22,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:23,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830943955] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:23,554 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:23,554 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 18] total 40 [2022-02-10 02:56:23,554 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318293281] [2022-02-10 02:56:23,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:23,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:56:23,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:23,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:56:23,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:56:23,555 INFO L87 Difference]: Start difference. First operand 16030 states and 52927 transitions. Second operand has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:24,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:24,262 INFO L93 Difference]: Finished difference Result 16335 states and 53461 transitions. [2022-02-10 02:56:24,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:56:24,263 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:24,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:24,302 INFO L225 Difference]: With dead ends: 16335 [2022-02-10 02:56:24,302 INFO L226 Difference]: Without dead ends: 16330 [2022-02-10 02:56:24,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 21 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=1672, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:56:24,303 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 177 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:24,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 944 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:56:24,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16330 states. [2022-02-10 02:56:24,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16330 to 16030. [2022-02-10 02:56:24,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16030 states, 16029 states have (on average 3.3019527107118347) internal successors, (52927), 16029 states have internal predecessors, (52927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16030 states to 16030 states and 52927 transitions. [2022-02-10 02:56:24,677 INFO L78 Accepts]: Start accepts. Automaton has 16030 states and 52927 transitions. Word has length 27 [2022-02-10 02:56:24,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:24,677 INFO L470 AbstractCegarLoop]: Abstraction has 16030 states and 52927 transitions. [2022-02-10 02:56:24,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand 16030 states and 52927 transitions. [2022-02-10 02:56:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:24,704 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:24,705 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:24,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (378)] Forceful destruction successful, exit code 0 [2022-02-10 02:56:24,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381,378 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:24,918 INFO L402 AbstractCegarLoop]: === Iteration 383 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:24,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:24,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1554263181, now seen corresponding path program 377 times [2022-02-10 02:56:24,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:24,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43950630] [2022-02-10 02:56:24,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:24,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:25,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:25,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43950630] [2022-02-10 02:56:25,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43950630] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:25,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553889602] [2022-02-10 02:56:25,245 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:56:25,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:25,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:25,246 INFO L229 MonitoredProcess]: Starting monitored process 379 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:25,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (379)] Waiting until timeout for monitored process [2022-02-10 02:56:25,282 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:56:25,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:25,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:25,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:25,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:26,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553889602] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:26,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:26,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 18] total 39 [2022-02-10 02:56:26,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874146096] [2022-02-10 02:56:26,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:26,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:56:26,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:26,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:56:26,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:56:26,195 INFO L87 Difference]: Start difference. First operand 16030 states and 52927 transitions. Second operand has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:26,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:26,813 INFO L93 Difference]: Finished difference Result 16234 states and 53202 transitions. [2022-02-10 02:56:26,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:56:26,813 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:26,929 INFO L225 Difference]: With dead ends: 16234 [2022-02-10 02:56:26,929 INFO L226 Difference]: Without dead ends: 16229 [2022-02-10 02:56:26,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=1596, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 02:56:26,929 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 148 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:26,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 895 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:56:26,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16229 states. [2022-02-10 02:56:27,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16229 to 16030. [2022-02-10 02:56:27,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16030 states, 16029 states have (on average 3.3019527107118347) internal successors, (52927), 16029 states have internal predecessors, (52927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16030 states to 16030 states and 52927 transitions. [2022-02-10 02:56:27,205 INFO L78 Accepts]: Start accepts. Automaton has 16030 states and 52927 transitions. Word has length 27 [2022-02-10 02:56:27,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:27,205 INFO L470 AbstractCegarLoop]: Abstraction has 16030 states and 52927 transitions. [2022-02-10 02:56:27,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:27,205 INFO L276 IsEmpty]: Start isEmpty. Operand 16030 states and 52927 transitions. [2022-02-10 02:56:27,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:27,230 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:27,230 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:27,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (379)] Forceful destruction successful, exit code 0 [2022-02-10 02:56:27,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382,379 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:27,431 INFO L402 AbstractCegarLoop]: === Iteration 384 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:27,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:27,432 INFO L85 PathProgramCache]: Analyzing trace with hash -25323985, now seen corresponding path program 378 times [2022-02-10 02:56:27,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:27,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488420061] [2022-02-10 02:56:27,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:27,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:27,710 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:27,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488420061] [2022-02-10 02:56:27,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488420061] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:27,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113368478] [2022-02-10 02:56:27,710 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:56:27,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:27,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:27,711 INFO L229 MonitoredProcess]: Starting monitored process 380 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:27,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (380)] Waiting until timeout for monitored process [2022-02-10 02:56:27,741 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:56:27,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:27,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:27,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:28,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:28,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113368478] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:28,655 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:28,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 18] total 40 [2022-02-10 02:56:28,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16871183] [2022-02-10 02:56:28,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:28,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:56:28,655 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:28,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:56:28,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:56:28,656 INFO L87 Difference]: Start difference. First operand 16030 states and 52927 transitions. Second operand has 41 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 40 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:29,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:29,388 INFO L93 Difference]: Finished difference Result 17175 states and 56241 transitions. [2022-02-10 02:56:29,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:56:29,390 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 40 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:29,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:29,427 INFO L225 Difference]: With dead ends: 17175 [2022-02-10 02:56:29,428 INFO L226 Difference]: Without dead ends: 17165 [2022-02-10 02:56:29,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=1822, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:56:29,428 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 195 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:29,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 969 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:56:29,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17165 states. [2022-02-10 02:56:29,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17165 to 16610. [2022-02-10 02:56:29,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16610 states, 16609 states have (on average 3.310674935276055) internal successors, (54987), 16609 states have internal predecessors, (54987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:29,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16610 states to 16610 states and 54987 transitions. [2022-02-10 02:56:29,888 INFO L78 Accepts]: Start accepts. Automaton has 16610 states and 54987 transitions. Word has length 27 [2022-02-10 02:56:29,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:29,888 INFO L470 AbstractCegarLoop]: Abstraction has 16610 states and 54987 transitions. [2022-02-10 02:56:29,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 40 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 16610 states and 54987 transitions. [2022-02-10 02:56:29,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:29,918 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:29,918 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:29,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (380)] Forceful destruction successful, exit code 0 [2022-02-10 02:56:30,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383,380 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:30,119 INFO L402 AbstractCegarLoop]: === Iteration 385 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:30,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:30,119 INFO L85 PathProgramCache]: Analyzing trace with hash 818684395, now seen corresponding path program 379 times [2022-02-10 02:56:30,119 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:30,119 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923927879] [2022-02-10 02:56:30,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:30,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:30,384 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:30,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923927879] [2022-02-10 02:56:30,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923927879] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:30,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905811658] [2022-02-10 02:56:30,384 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:56:30,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:30,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:30,385 INFO L229 MonitoredProcess]: Starting monitored process 381 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:30,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (381)] Waiting until timeout for monitored process [2022-02-10 02:56:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:30,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:30,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:30,848 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:30,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:31,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905811658] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:31,437 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:31,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 18] total 40 [2022-02-10 02:56:31,438 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878130005] [2022-02-10 02:56:31,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:31,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:56:31,438 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:31,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:56:31,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:56:31,439 INFO L87 Difference]: Start difference. First operand 16610 states and 54987 transitions. Second operand has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:32,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:32,148 INFO L93 Difference]: Finished difference Result 17172 states and 56188 transitions. [2022-02-10 02:56:32,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:56:32,149 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:32,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:32,198 INFO L225 Difference]: With dead ends: 17172 [2022-02-10 02:56:32,198 INFO L226 Difference]: Without dead ends: 17160 [2022-02-10 02:56:32,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=158, Invalid=1822, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:56:32,199 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 213 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:32,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 992 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:56:32,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17160 states. [2022-02-10 02:56:32,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17160 to 16537. [2022-02-10 02:56:32,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16537 states, 16536 states have (on average 3.303640541848089) internal successors, (54629), 16536 states have internal predecessors, (54629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:32,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16537 states to 16537 states and 54629 transitions. [2022-02-10 02:56:32,589 INFO L78 Accepts]: Start accepts. Automaton has 16537 states and 54629 transitions. Word has length 27 [2022-02-10 02:56:32,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:32,589 INFO L470 AbstractCegarLoop]: Abstraction has 16537 states and 54629 transitions. [2022-02-10 02:56:32,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:32,590 INFO L276 IsEmpty]: Start isEmpty. Operand 16537 states and 54629 transitions. [2022-02-10 02:56:32,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:32,618 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:32,618 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:32,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (381)] Ended with exit code 0 [2022-02-10 02:56:32,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 381 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable384 [2022-02-10 02:56:32,819 INFO L402 AbstractCegarLoop]: === Iteration 386 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:32,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:32,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1242175407, now seen corresponding path program 380 times [2022-02-10 02:56:32,819 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:32,819 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808200178] [2022-02-10 02:56:32,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:32,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:33,087 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:33,087 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808200178] [2022-02-10 02:56:33,087 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808200178] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:33,087 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228662103] [2022-02-10 02:56:33,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:56:33,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:33,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:33,092 INFO L229 MonitoredProcess]: Starting monitored process 382 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:33,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (382)] Waiting until timeout for monitored process [2022-02-10 02:56:33,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:56:33,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:33,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:33,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:33,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:34,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228662103] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:34,315 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:34,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 18] total 39 [2022-02-10 02:56:34,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620519030] [2022-02-10 02:56:34,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:34,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:56:34,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:34,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:56:34,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:56:34,316 INFO L87 Difference]: Start difference. First operand 16537 states and 54629 transitions. Second operand has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:35,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:35,311 INFO L93 Difference]: Finished difference Result 16966 states and 55476 transitions. [2022-02-10 02:56:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:56:35,311 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:35,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:35,363 INFO L225 Difference]: With dead ends: 16966 [2022-02-10 02:56:35,363 INFO L226 Difference]: Without dead ends: 16954 [2022-02-10 02:56:35,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=153, Invalid=1827, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:56:35,364 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 186 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:35,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 1047 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1608 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:56:35,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16954 states. [2022-02-10 02:56:35,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16954 to 16517. [2022-02-10 02:56:35,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16517 states, 16516 states have (on average 3.302131266650521) internal successors, (54538), 16516 states have internal predecessors, (54538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:35,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16517 states to 16517 states and 54538 transitions. [2022-02-10 02:56:35,790 INFO L78 Accepts]: Start accepts. Automaton has 16517 states and 54538 transitions. Word has length 27 [2022-02-10 02:56:35,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:35,791 INFO L470 AbstractCegarLoop]: Abstraction has 16517 states and 54538 transitions. [2022-02-10 02:56:35,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:35,791 INFO L276 IsEmpty]: Start isEmpty. Operand 16517 states and 54538 transitions. [2022-02-10 02:56:35,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:35,814 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:35,815 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:35,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (382)] Ended with exit code 0 [2022-02-10 02:56:36,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385,382 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:36,015 INFO L402 AbstractCegarLoop]: === Iteration 387 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:36,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:36,015 INFO L85 PathProgramCache]: Analyzing trace with hash -704319829, now seen corresponding path program 381 times [2022-02-10 02:56:36,015 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:36,015 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323471282] [2022-02-10 02:56:36,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:36,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:36,323 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:36,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323471282] [2022-02-10 02:56:36,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323471282] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:36,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092408094] [2022-02-10 02:56:36,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:56:36,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:36,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:36,327 INFO L229 MonitoredProcess]: Starting monitored process 383 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:36,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (383)] Waiting until timeout for monitored process [2022-02-10 02:56:36,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 02:56:36,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:36,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:36,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:36,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:37,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092408094] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:37,410 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:37,410 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 18] total 38 [2022-02-10 02:56:37,411 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555207028] [2022-02-10 02:56:37,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:37,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 02:56:37,411 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:37,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 02:56:37,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:56:37,411 INFO L87 Difference]: Start difference. First operand 16517 states and 54538 transitions. Second operand has 39 states, 39 states have (on average 1.641025641025641) internal successors, (64), 38 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:38,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:38,108 INFO L93 Difference]: Finished difference Result 16818 states and 55008 transitions. [2022-02-10 02:56:38,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:56:38,109 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.641025641025641) internal successors, (64), 38 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:38,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:38,146 INFO L225 Difference]: With dead ends: 16818 [2022-02-10 02:56:38,146 INFO L226 Difference]: Without dead ends: 16813 [2022-02-10 02:56:38,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 11 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=1672, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:56:38,146 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 175 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:38,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 831 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:56:38,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16813 states. [2022-02-10 02:56:38,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16813 to 16518. [2022-02-10 02:56:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16518 states, 16517 states have (on average 3.3019918871465763) internal successors, (54539), 16517 states have internal predecessors, (54539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16518 states to 16518 states and 54539 transitions. [2022-02-10 02:56:38,527 INFO L78 Accepts]: Start accepts. Automaton has 16518 states and 54539 transitions. Word has length 27 [2022-02-10 02:56:38,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:38,527 INFO L470 AbstractCegarLoop]: Abstraction has 16518 states and 54539 transitions. [2022-02-10 02:56:38,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.641025641025641) internal successors, (64), 38 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:38,527 INFO L276 IsEmpty]: Start isEmpty. Operand 16518 states and 54539 transitions. [2022-02-10 02:56:38,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:38,551 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:38,551 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:38,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (383)] Ended with exit code 0 [2022-02-10 02:56:38,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386,383 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:38,751 INFO L402 AbstractCegarLoop]: === Iteration 388 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:38,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:38,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2061801557, now seen corresponding path program 382 times [2022-02-10 02:56:38,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:38,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120300807] [2022-02-10 02:56:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:38,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:39,020 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:39,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120300807] [2022-02-10 02:56:39,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120300807] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:39,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845724103] [2022-02-10 02:56:39,020 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:56:39,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:39,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:39,026 INFO L229 MonitoredProcess]: Starting monitored process 384 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:39,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (384)] Waiting until timeout for monitored process [2022-02-10 02:56:39,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:56:39,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:39,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:39,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:56:39,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:40,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845724103] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:40,014 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:40,014 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 18] total 39 [2022-02-10 02:56:40,014 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950934454] [2022-02-10 02:56:40,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:40,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:56:40,014 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:40,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:56:40,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1442, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:56:40,015 INFO L87 Difference]: Start difference. First operand 16518 states and 54539 transitions. Second operand has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:40,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:40,591 INFO L93 Difference]: Finished difference Result 16715 states and 54749 transitions. [2022-02-10 02:56:40,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:56:40,591 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:40,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:40,627 INFO L225 Difference]: With dead ends: 16715 [2022-02-10 02:56:40,627 INFO L226 Difference]: Without dead ends: 16708 [2022-02-10 02:56:40,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 20 SyntacticMatches, 12 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=149, Invalid=1657, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:56:40,628 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 210 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:40,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 800 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:56:40,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16708 states. [2022-02-10 02:56:40,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16708 to 16508. [2022-02-10 02:56:40,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16508 states, 16507 states have (on average 3.3014478706003514) internal successors, (54497), 16507 states have internal predecessors, (54497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:40,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16508 states to 16508 states and 54497 transitions. [2022-02-10 02:56:40,962 INFO L78 Accepts]: Start accepts. Automaton has 16508 states and 54497 transitions. Word has length 27 [2022-02-10 02:56:40,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:40,962 INFO L470 AbstractCegarLoop]: Abstraction has 16508 states and 54497 transitions. [2022-02-10 02:56:40,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:40,962 INFO L276 IsEmpty]: Start isEmpty. Operand 16508 states and 54497 transitions. [2022-02-10 02:56:40,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:40,986 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:40,986 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:41,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (384)] Ended with exit code 0 [2022-02-10 02:56:41,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 384 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable387 [2022-02-10 02:56:41,186 INFO L402 AbstractCegarLoop]: === Iteration 389 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:41,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:41,187 INFO L85 PathProgramCache]: Analyzing trace with hash -815574293, now seen corresponding path program 383 times [2022-02-10 02:56:41,187 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:41,187 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766576706] [2022-02-10 02:56:41,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:41,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:41,402 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:41,402 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:41,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766576706] [2022-02-10 02:56:41,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766576706] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:41,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705177958] [2022-02-10 02:56:41,402 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:56:41,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:41,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:41,404 INFO L229 MonitoredProcess]: Starting monitored process 385 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:41,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (385)] Waiting until timeout for monitored process [2022-02-10 02:56:41,434 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-02-10 02:56:41,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:41,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:41,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:41,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:42,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705177958] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:42,394 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:42,394 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 18] total 40 [2022-02-10 02:56:42,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176832587] [2022-02-10 02:56:42,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:42,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:56:42,395 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:42,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:56:42,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:56:42,395 INFO L87 Difference]: Start difference. First operand 16508 states and 54497 transitions. Second operand has 41 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 40 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:43,148 INFO L93 Difference]: Finished difference Result 17518 states and 57491 transitions. [2022-02-10 02:56:43,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:56:43,149 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 40 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:43,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:43,183 INFO L225 Difference]: With dead ends: 17518 [2022-02-10 02:56:43,183 INFO L226 Difference]: Without dead ends: 17508 [2022-02-10 02:56:43,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=1822, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:56:43,183 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 204 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:43,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 1041 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:56:43,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17508 states. [2022-02-10 02:56:43,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17508 to 17062. [2022-02-10 02:56:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17062 states, 17061 states have (on average 3.3124670300685777) internal successors, (56514), 17061 states have internal predecessors, (56514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17062 states to 17062 states and 56514 transitions. [2022-02-10 02:56:43,526 INFO L78 Accepts]: Start accepts. Automaton has 17062 states and 56514 transitions. Word has length 27 [2022-02-10 02:56:43,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:43,526 INFO L470 AbstractCegarLoop]: Abstraction has 17062 states and 56514 transitions. [2022-02-10 02:56:43,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 40 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:43,526 INFO L276 IsEmpty]: Start isEmpty. Operand 17062 states and 56514 transitions. [2022-02-10 02:56:43,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:43,555 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:43,555 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:43,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (385)] Ended with exit code 0 [2022-02-10 02:56:43,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 385 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable388 [2022-02-10 02:56:43,758 INFO L402 AbstractCegarLoop]: === Iteration 390 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:43,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:43,758 INFO L85 PathProgramCache]: Analyzing trace with hash 28434087, now seen corresponding path program 384 times [2022-02-10 02:56:43,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:43,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616950067] [2022-02-10 02:56:43,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:43,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:43,996 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:43,996 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:43,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616950067] [2022-02-10 02:56:43,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616950067] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:43,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21934846] [2022-02-10 02:56:43,996 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:56:43,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:43,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:43,997 INFO L229 MonitoredProcess]: Starting monitored process 386 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:43,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (386)] Waiting until timeout for monitored process [2022-02-10 02:56:44,026 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 02:56:44,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:44,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:44,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:44,394 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:44,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:44,958 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:44,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21934846] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:44,958 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:44,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 18] total 40 [2022-02-10 02:56:44,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068890011] [2022-02-10 02:56:44,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:44,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:56:44,958 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:44,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:56:44,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:56:44,959 INFO L87 Difference]: Start difference. First operand 17062 states and 56514 transitions. Second operand has 41 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 40 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:45,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:45,785 INFO L93 Difference]: Finished difference Result 17519 states and 57473 transitions. [2022-02-10 02:56:45,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:56:45,785 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 40 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:45,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:45,825 INFO L225 Difference]: With dead ends: 17519 [2022-02-10 02:56:45,826 INFO L226 Difference]: Without dead ends: 17507 [2022-02-10 02:56:45,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=1822, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:56:45,826 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 206 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:45,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 1326 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:56:45,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17507 states. [2022-02-10 02:56:46,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17507 to 16979. [2022-02-10 02:56:46,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16979 states, 16978 states have (on average 3.3059842148662977) internal successors, (56129), 16978 states have internal predecessors, (56129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16979 states to 16979 states and 56129 transitions. [2022-02-10 02:56:46,248 INFO L78 Accepts]: Start accepts. Automaton has 16979 states and 56129 transitions. Word has length 27 [2022-02-10 02:56:46,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:46,249 INFO L470 AbstractCegarLoop]: Abstraction has 16979 states and 56129 transitions. [2022-02-10 02:56:46,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 40 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:46,249 INFO L276 IsEmpty]: Start isEmpty. Operand 16979 states and 56129 transitions. [2022-02-10 02:56:46,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:46,273 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:46,273 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:46,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (386)] Ended with exit code 0 [2022-02-10 02:56:46,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 386 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable389 [2022-02-10 02:56:46,474 INFO L402 AbstractCegarLoop]: === Iteration 391 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:46,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:46,475 INFO L85 PathProgramCache]: Analyzing trace with hash -2032425715, now seen corresponding path program 385 times [2022-02-10 02:56:46,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:46,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315579340] [2022-02-10 02:56:46,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:46,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:46,741 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:46,741 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:46,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315579340] [2022-02-10 02:56:46,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315579340] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:46,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755864845] [2022-02-10 02:56:46,742 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:56:46,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:46,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:46,744 INFO L229 MonitoredProcess]: Starting monitored process 387 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:46,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (387)] Waiting until timeout for monitored process [2022-02-10 02:56:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:46,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:46,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:47,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:47,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755864845] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:47,678 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:47,678 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 18] total 39 [2022-02-10 02:56:47,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541831733] [2022-02-10 02:56:47,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:47,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:56:47,678 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:47,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:56:47,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:56:47,679 INFO L87 Difference]: Start difference. First operand 16979 states and 56129 transitions. Second operand has 40 states, 40 states have (on average 1.6) internal successors, (64), 39 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:48,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:48,562 INFO L93 Difference]: Finished difference Result 17376 states and 56902 transitions. [2022-02-10 02:56:48,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:56:48,563 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 39 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:48,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:48,599 INFO L225 Difference]: With dead ends: 17376 [2022-02-10 02:56:48,599 INFO L226 Difference]: Without dead ends: 17363 [2022-02-10 02:56:48,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=153, Invalid=1827, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:56:48,600 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 205 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:48,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 1093 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:56:48,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17363 states. [2022-02-10 02:56:48,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17363 to 16910. [2022-02-10 02:56:48,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16910 states, 16909 states have (on average 3.301673664912177) internal successors, (55828), 16909 states have internal predecessors, (55828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:49,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16910 states to 16910 states and 55828 transitions. [2022-02-10 02:56:49,052 INFO L78 Accepts]: Start accepts. Automaton has 16910 states and 55828 transitions. Word has length 27 [2022-02-10 02:56:49,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:49,052 INFO L470 AbstractCegarLoop]: Abstraction has 16910 states and 55828 transitions. [2022-02-10 02:56:49,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 39 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:49,053 INFO L276 IsEmpty]: Start isEmpty. Operand 16910 states and 55828 transitions. [2022-02-10 02:56:49,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:49,078 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:49,078 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:49,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (387)] Ended with exit code 0 [2022-02-10 02:56:49,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390,387 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:49,278 INFO L402 AbstractCegarLoop]: === Iteration 392 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:49,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:49,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1494570137, now seen corresponding path program 386 times [2022-02-10 02:56:49,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:49,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706690705] [2022-02-10 02:56:49,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:49,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:49,516 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:49,516 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:49,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706690705] [2022-02-10 02:56:49,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706690705] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:49,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099303344] [2022-02-10 02:56:49,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:56:49,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:49,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:49,517 INFO L229 MonitoredProcess]: Starting monitored process 388 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:49,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (388)] Waiting until timeout for monitored process [2022-02-10 02:56:49,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:56:49,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:49,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:49,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:49,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:50,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099303344] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:50,462 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:50,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 18] total 38 [2022-02-10 02:56:50,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077340074] [2022-02-10 02:56:50,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:50,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 02:56:50,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:50,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 02:56:50,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:56:50,463 INFO L87 Difference]: Start difference. First operand 16910 states and 55828 transitions. Second operand has 39 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 38 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:51,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:51,309 INFO L93 Difference]: Finished difference Result 17223 states and 56367 transitions. [2022-02-10 02:56:51,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:56:51,310 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 38 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:51,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:51,347 INFO L225 Difference]: With dead ends: 17223 [2022-02-10 02:56:51,347 INFO L226 Difference]: Without dead ends: 17210 [2022-02-10 02:56:51,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 10 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=154, Invalid=1826, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:56:51,348 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 195 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:51,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 942 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:56:51,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17210 states. [2022-02-10 02:56:51,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17210 to 16876. [2022-02-10 02:56:51,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16876 states, 16875 states have (on average 3.3022222222222224) internal successors, (55725), 16875 states have internal predecessors, (55725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:51,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16876 states to 16876 states and 55725 transitions. [2022-02-10 02:56:51,742 INFO L78 Accepts]: Start accepts. Automaton has 16876 states and 55725 transitions. Word has length 27 [2022-02-10 02:56:51,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:51,743 INFO L470 AbstractCegarLoop]: Abstraction has 16876 states and 55725 transitions. [2022-02-10 02:56:51,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 38 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:51,743 INFO L276 IsEmpty]: Start isEmpty. Operand 16876 states and 55725 transitions. [2022-02-10 02:56:51,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:51,769 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:51,769 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:51,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (388)] Forceful destruction successful, exit code 0 [2022-02-10 02:56:51,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391,388 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:51,970 INFO L402 AbstractCegarLoop]: === Iteration 393 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:51,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:51,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2000916403, now seen corresponding path program 387 times [2022-02-10 02:56:51,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:51,970 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624399419] [2022-02-10 02:56:51,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:51,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:52,223 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:52,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624399419] [2022-02-10 02:56:52,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624399419] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:52,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660598541] [2022-02-10 02:56:52,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:56:52,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:52,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:52,225 INFO L229 MonitoredProcess]: Starting monitored process 389 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:52,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (389)] Waiting until timeout for monitored process [2022-02-10 02:56:52,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-02-10 02:56:52,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:52,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:52,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:52,603 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:52,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:53,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660598541] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:53,090 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:53,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 18] total 37 [2022-02-10 02:56:53,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171037518] [2022-02-10 02:56:53,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:53,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 02:56:53,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:53,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 02:56:53,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1300, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:56:53,091 INFO L87 Difference]: Start difference. First operand 16876 states and 55725 transitions. Second operand has 38 states, 38 states have (on average 1.631578947368421) internal successors, (62), 37 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:53,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:53,860 INFO L93 Difference]: Finished difference Result 17109 states and 56059 transitions. [2022-02-10 02:56:53,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:56:53,860 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.631578947368421) internal successors, (62), 37 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:53,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:53,895 INFO L225 Difference]: With dead ends: 17109 [2022-02-10 02:56:53,895 INFO L226 Difference]: Without dead ends: 17104 [2022-02-10 02:56:53,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=135, Invalid=1671, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:56:53,896 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 190 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:53,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 844 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:56:53,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17104 states. [2022-02-10 02:56:54,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17104 to 16878. [2022-02-10 02:56:54,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16878 states, 16877 states have (on average 3.3019493985897967) internal successors, (55727), 16877 states have internal predecessors, (55727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:54,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16878 states to 16878 states and 55727 transitions. [2022-02-10 02:56:54,384 INFO L78 Accepts]: Start accepts. Automaton has 16878 states and 55727 transitions. Word has length 27 [2022-02-10 02:56:54,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:54,384 INFO L470 AbstractCegarLoop]: Abstraction has 16878 states and 55727 transitions. [2022-02-10 02:56:54,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.631578947368421) internal successors, (62), 37 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:54,384 INFO L276 IsEmpty]: Start isEmpty. Operand 16878 states and 55727 transitions. [2022-02-10 02:56:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:54,412 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:54,412 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:54,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (389)] Ended with exit code 0 [2022-02-10 02:56:54,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392,389 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:54,612 INFO L402 AbstractCegarLoop]: === Iteration 394 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:54,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:54,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1966253585, now seen corresponding path program 388 times [2022-02-10 02:56:54,613 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:54,613 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94974537] [2022-02-10 02:56:54,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:54,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:54,831 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:54,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94974537] [2022-02-10 02:56:54,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94974537] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:54,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474304742] [2022-02-10 02:56:54,832 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:56:54,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:54,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:54,833 INFO L229 MonitoredProcess]: Starting monitored process 390 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:54,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (390)] Waiting until timeout for monitored process [2022-02-10 02:56:54,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:56:54,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:54,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:54,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:55,227 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:56:55,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:55,849 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474304742] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:55,849 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:55,849 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 18] total 39 [2022-02-10 02:56:55,849 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028383342] [2022-02-10 02:56:55,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:55,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:56:55,850 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:55,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:56:55,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1442, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:56:55,850 INFO L87 Difference]: Start difference. First operand 16878 states and 55727 transitions. Second operand has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:56,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:56,434 INFO L93 Difference]: Finished difference Result 17038 states and 55898 transitions. [2022-02-10 02:56:56,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:56:56,435 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:56,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:56,487 INFO L225 Difference]: With dead ends: 17038 [2022-02-10 02:56:56,488 INFO L226 Difference]: Without dead ends: 17031 [2022-02-10 02:56:56,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 20 SyntacticMatches, 12 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=149, Invalid=1657, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:56:56,488 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 225 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:56,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 661 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:56:56,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17031 states. [2022-02-10 02:56:56,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17031 to 16870. [2022-02-10 02:56:56,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16870 states, 16869 states have (on average 3.3015590728555337) internal successors, (55694), 16869 states have internal predecessors, (55694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:56,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16870 states to 16870 states and 55694 transitions. [2022-02-10 02:56:56,900 INFO L78 Accepts]: Start accepts. Automaton has 16870 states and 55694 transitions. Word has length 27 [2022-02-10 02:56:56,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:56,901 INFO L470 AbstractCegarLoop]: Abstraction has 16870 states and 55694 transitions. [2022-02-10 02:56:56,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:56,901 INFO L276 IsEmpty]: Start isEmpty. Operand 16870 states and 55694 transitions. [2022-02-10 02:56:56,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:56,931 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:56,931 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:56,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (390)] Forceful destruction successful, exit code 0 [2022-02-10 02:56:57,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393,390 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:57,132 INFO L402 AbstractCegarLoop]: === Iteration 395 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:57,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:57,132 INFO L85 PathProgramCache]: Analyzing trace with hash 456469935, now seen corresponding path program 389 times [2022-02-10 02:56:57,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:57,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345548397] [2022-02-10 02:56:57,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:57,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:57,367 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:57,367 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:57,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345548397] [2022-02-10 02:56:57,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345548397] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:57,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101227826] [2022-02-10 02:56:57,367 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:56:57,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:57,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:57,368 INFO L229 MonitoredProcess]: Starting monitored process 391 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:57,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (391)] Waiting until timeout for monitored process [2022-02-10 02:56:57,397 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:56:57,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:57,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:56:57,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:57,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:58,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101227826] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:58,303 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:58,303 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 18] total 40 [2022-02-10 02:56:58,303 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541489773] [2022-02-10 02:56:58,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:58,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:56:58,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:58,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:56:58,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:56:58,304 INFO L87 Difference]: Start difference. First operand 16870 states and 55694 transitions. Second operand has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 40 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:59,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:59,219 INFO L93 Difference]: Finished difference Result 17659 states and 57972 transitions. [2022-02-10 02:56:59,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:56:59,219 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 40 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:56:59,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:59,256 INFO L225 Difference]: With dead ends: 17659 [2022-02-10 02:56:59,256 INFO L226 Difference]: Without dead ends: 17649 [2022-02-10 02:56:59,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=1822, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:56:59,256 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 207 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:59,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 1156 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:56:59,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17649 states. [2022-02-10 02:56:59,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17649 to 17316. [2022-02-10 02:56:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17316 states, 17315 states have (on average 3.3116950620848975) internal successors, (57342), 17315 states have internal predecessors, (57342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:59,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17316 states to 17316 states and 57342 transitions. [2022-02-10 02:56:59,604 INFO L78 Accepts]: Start accepts. Automaton has 17316 states and 57342 transitions. Word has length 27 [2022-02-10 02:56:59,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:59,605 INFO L470 AbstractCegarLoop]: Abstraction has 17316 states and 57342 transitions. [2022-02-10 02:56:59,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 40 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:59,605 INFO L276 IsEmpty]: Start isEmpty. Operand 17316 states and 57342 transitions. [2022-02-10 02:56:59,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:56:59,633 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:59,633 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:59,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (391)] Forceful destruction successful, exit code 0 [2022-02-10 02:56:59,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 391 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable394 [2022-02-10 02:56:59,833 INFO L402 AbstractCegarLoop]: === Iteration 396 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:59,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:59,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1300478315, now seen corresponding path program 390 times [2022-02-10 02:56:59,834 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:59,834 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863613271] [2022-02-10 02:56:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:59,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:00,086 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:00,086 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863613271] [2022-02-10 02:57:00,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863613271] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:00,086 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305440684] [2022-02-10 02:57:00,086 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:57:00,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:00,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:00,087 INFO L229 MonitoredProcess]: Starting monitored process 392 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:00,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (392)] Waiting until timeout for monitored process [2022-02-10 02:57:00,115 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:57:00,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:00,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:00,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:00,436 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:00,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:01,008 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:01,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305440684] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:01,008 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:01,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 18] total 40 [2022-02-10 02:57:01,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122816396] [2022-02-10 02:57:01,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:01,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:57:01,008 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:01,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:57:01,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:57:01,009 INFO L87 Difference]: Start difference. First operand 17316 states and 57342 transitions. Second operand has 41 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 40 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:01,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:01,814 INFO L93 Difference]: Finished difference Result 17659 states and 57964 transitions. [2022-02-10 02:57:01,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:57:01,814 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 40 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:01,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:01,853 INFO L225 Difference]: With dead ends: 17659 [2022-02-10 02:57:01,853 INFO L226 Difference]: Without dead ends: 17647 [2022-02-10 02:57:01,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=1822, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:57:01,853 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 191 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:01,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 1246 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:57:01,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17647 states. [2022-02-10 02:57:02,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17647 to 17247. [2022-02-10 02:57:02,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17247 states, 17246 states have (on average 3.305752058448336) internal successors, (57011), 17246 states have internal predecessors, (57011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:02,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17247 states to 17247 states and 57011 transitions. [2022-02-10 02:57:02,353 INFO L78 Accepts]: Start accepts. Automaton has 17247 states and 57011 transitions. Word has length 27 [2022-02-10 02:57:02,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:02,354 INFO L470 AbstractCegarLoop]: Abstraction has 17247 states and 57011 transitions. [2022-02-10 02:57:02,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 40 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:02,354 INFO L276 IsEmpty]: Start isEmpty. Operand 17247 states and 57011 transitions. [2022-02-10 02:57:02,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:02,386 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:02,386 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:02,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (392)] Forceful destruction successful, exit code 0 [2022-02-10 02:57:02,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395,392 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:02,608 INFO L402 AbstractCegarLoop]: === Iteration 397 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:02,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:02,608 INFO L85 PathProgramCache]: Analyzing trace with hash -760381487, now seen corresponding path program 391 times [2022-02-10 02:57:02,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:02,609 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890757441] [2022-02-10 02:57:02,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:02,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:02,896 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:02,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890757441] [2022-02-10 02:57:02,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890757441] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:02,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803594554] [2022-02-10 02:57:02,897 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:57:02,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:02,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:02,898 INFO L229 MonitoredProcess]: Starting monitored process 393 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:02,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (393)] Waiting until timeout for monitored process [2022-02-10 02:57:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:02,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:02,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:03,347 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:03,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:03,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803594554] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:03,927 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:03,927 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 18] total 39 [2022-02-10 02:57:03,928 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203144841] [2022-02-10 02:57:03,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:03,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:57:03,928 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:03,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:57:03,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:57:03,929 INFO L87 Difference]: Start difference. First operand 17247 states and 57011 transitions. Second operand has 40 states, 40 states have (on average 1.575) internal successors, (63), 39 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:04,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:04,981 INFO L93 Difference]: Finished difference Result 17570 states and 57558 transitions. [2022-02-10 02:57:04,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:57:04,981 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.575) internal successors, (63), 39 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:04,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:05,019 INFO L225 Difference]: With dead ends: 17570 [2022-02-10 02:57:05,020 INFO L226 Difference]: Without dead ends: 17557 [2022-02-10 02:57:05,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=153, Invalid=1827, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:57:05,020 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 203 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:05,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 1396 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2060 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:57:05,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17557 states. [2022-02-10 02:57:05,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17557 to 17190. [2022-02-10 02:57:05,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17190 states, 17189 states have (on average 3.3030426435511084) internal successors, (56776), 17189 states have internal predecessors, (56776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17190 states to 17190 states and 56776 transitions. [2022-02-10 02:57:05,358 INFO L78 Accepts]: Start accepts. Automaton has 17190 states and 56776 transitions. Word has length 27 [2022-02-10 02:57:05,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:05,359 INFO L470 AbstractCegarLoop]: Abstraction has 17190 states and 56776 transitions. [2022-02-10 02:57:05,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.575) internal successors, (63), 39 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:05,359 INFO L276 IsEmpty]: Start isEmpty. Operand 17190 states and 56776 transitions. [2022-02-10 02:57:05,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:05,383 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:05,383 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:05,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (393)] Ended with exit code 0 [2022-02-10 02:57:05,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396,393 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:05,584 INFO L402 AbstractCegarLoop]: === Iteration 398 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:05,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:05,584 INFO L85 PathProgramCache]: Analyzing trace with hash -222525909, now seen corresponding path program 392 times [2022-02-10 02:57:05,584 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:05,584 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716247914] [2022-02-10 02:57:05,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:05,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:05,807 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:05,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716247914] [2022-02-10 02:57:05,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716247914] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:05,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426768294] [2022-02-10 02:57:05,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:57:05,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:05,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:05,808 INFO L229 MonitoredProcess]: Starting monitored process 394 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:05,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (394)] Waiting until timeout for monitored process [2022-02-10 02:57:05,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:57:05,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:05,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:05,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:06,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:06,702 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:06,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426768294] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:06,702 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:06,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 18] total 38 [2022-02-10 02:57:06,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565943315] [2022-02-10 02:57:06,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:06,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 02:57:06,702 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:06,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 02:57:06,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:57:06,703 INFO L87 Difference]: Start difference. First operand 17190 states and 56776 transitions. Second operand has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:07,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:07,691 INFO L93 Difference]: Finished difference Result 17498 states and 57246 transitions. [2022-02-10 02:57:07,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:57:07,691 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:07,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:07,725 INFO L225 Difference]: With dead ends: 17498 [2022-02-10 02:57:07,725 INFO L226 Difference]: Without dead ends: 17484 [2022-02-10 02:57:07,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=154, Invalid=1826, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:57:07,725 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 207 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:07,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 1229 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:57:07,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17484 states. [2022-02-10 02:57:08,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17484 to 17141. [2022-02-10 02:57:08,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17141 states, 17140 states have (on average 3.3012252042007) internal successors, (56583), 17140 states have internal predecessors, (56583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:08,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17141 states to 17141 states and 56583 transitions. [2022-02-10 02:57:08,080 INFO L78 Accepts]: Start accepts. Automaton has 17141 states and 56583 transitions. Word has length 27 [2022-02-10 02:57:08,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:08,080 INFO L470 AbstractCegarLoop]: Abstraction has 17141 states and 56583 transitions. [2022-02-10 02:57:08,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:08,081 INFO L276 IsEmpty]: Start isEmpty. Operand 17141 states and 56583 transitions. [2022-02-10 02:57:08,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:08,104 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:08,105 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:08,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (394)] Ended with exit code 0 [2022-02-10 02:57:08,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 394 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable397 [2022-02-10 02:57:08,305 INFO L402 AbstractCegarLoop]: === Iteration 399 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:08,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:08,305 INFO L85 PathProgramCache]: Analyzing trace with hash -728872175, now seen corresponding path program 393 times [2022-02-10 02:57:08,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:08,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71517685] [2022-02-10 02:57:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:08,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:08,534 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:08,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71517685] [2022-02-10 02:57:08,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71517685] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:08,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527621244] [2022-02-10 02:57:08,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:57:08,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:08,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:08,535 INFO L229 MonitoredProcess]: Starting monitored process 395 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:08,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (395)] Waiting until timeout for monitored process [2022-02-10 02:57:08,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 02:57:08,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:08,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:08,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:08,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:09,374 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:09,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527621244] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:09,374 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:09,374 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 18] total 37 [2022-02-10 02:57:09,374 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120959704] [2022-02-10 02:57:09,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:09,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 02:57:09,374 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:09,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 02:57:09,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1300, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:57:09,375 INFO L87 Difference]: Start difference. First operand 17141 states and 56583 transitions. Second operand has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 37 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:10,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:10,235 INFO L93 Difference]: Finished difference Result 17386 states and 56928 transitions. [2022-02-10 02:57:10,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:57:10,235 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 37 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:10,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:10,270 INFO L225 Difference]: With dead ends: 17386 [2022-02-10 02:57:10,270 INFO L226 Difference]: Without dead ends: 17372 [2022-02-10 02:57:10,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 27 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=1825, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:57:10,271 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 211 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:10,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 940 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:57:10,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17372 states. [2022-02-10 02:57:10,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17372 to 17108. [2022-02-10 02:57:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17108 states, 17107 states have (on average 3.3017478225287893) internal successors, (56483), 17107 states have internal predecessors, (56483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17108 states to 17108 states and 56483 transitions. [2022-02-10 02:57:10,683 INFO L78 Accepts]: Start accepts. Automaton has 17108 states and 56483 transitions. Word has length 27 [2022-02-10 02:57:10,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:10,684 INFO L470 AbstractCegarLoop]: Abstraction has 17108 states and 56483 transitions. [2022-02-10 02:57:10,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 37 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:10,684 INFO L276 IsEmpty]: Start isEmpty. Operand 17108 states and 56483 transitions. [2022-02-10 02:57:10,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:10,707 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:10,707 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:10,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (395)] Ended with exit code 0 [2022-02-10 02:57:10,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 395 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable398 [2022-02-10 02:57:10,908 INFO L402 AbstractCegarLoop]: === Iteration 400 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:10,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:10,908 INFO L85 PathProgramCache]: Analyzing trace with hash 754262763, now seen corresponding path program 394 times [2022-02-10 02:57:10,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:10,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272772569] [2022-02-10 02:57:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:10,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:11,143 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:11,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272772569] [2022-02-10 02:57:11,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272772569] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:11,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89737718] [2022-02-10 02:57:11,143 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:57:11,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:11,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:11,144 INFO L229 MonitoredProcess]: Starting monitored process 396 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:11,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (396)] Waiting until timeout for monitored process [2022-02-10 02:57:11,172 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:57:11,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:11,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:11,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:11,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:11,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89737718] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:11,960 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:11,960 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 18] total 36 [2022-02-10 02:57:11,960 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914816284] [2022-02-10 02:57:11,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:11,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:57:11,960 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:11,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:57:11,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:57:11,961 INFO L87 Difference]: Start difference. First operand 17108 states and 56483 transitions. Second operand has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 36 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:12,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:12,895 INFO L93 Difference]: Finished difference Result 17299 states and 56723 transitions. [2022-02-10 02:57:12,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:57:12,895 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 36 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:12,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:12,931 INFO L225 Difference]: With dead ends: 17299 [2022-02-10 02:57:12,931 INFO L226 Difference]: Without dead ends: 17294 [2022-02-10 02:57:12,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 28 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=1670, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:57:12,932 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 172 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:12,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 1049 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1965 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:57:12,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17294 states. [2022-02-10 02:57:13,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17294 to 17111. [2022-02-10 02:57:13,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17111 states, 17110 states have (on average 3.301344243132671) internal successors, (56486), 17110 states have internal predecessors, (56486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17111 states to 17111 states and 56486 transitions. [2022-02-10 02:57:13,270 INFO L78 Accepts]: Start accepts. Automaton has 17111 states and 56486 transitions. Word has length 27 [2022-02-10 02:57:13,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:13,270 INFO L470 AbstractCegarLoop]: Abstraction has 17111 states and 56486 transitions. [2022-02-10 02:57:13,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 36 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:13,270 INFO L276 IsEmpty]: Start isEmpty. Operand 17111 states and 56486 transitions. [2022-02-10 02:57:13,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:13,294 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:13,294 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:13,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (396)] Ended with exit code 0 [2022-02-10 02:57:13,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399,396 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:13,494 INFO L402 AbstractCegarLoop]: === Iteration 401 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:13,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:13,495 INFO L85 PathProgramCache]: Analyzing trace with hash 995733547, now seen corresponding path program 395 times [2022-02-10 02:57:13,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:13,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930160446] [2022-02-10 02:57:13,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:13,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:13,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:13,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930160446] [2022-02-10 02:57:13,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930160446] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:13,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236294301] [2022-02-10 02:57:13,714 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:57:13,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:13,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:13,715 INFO L229 MonitoredProcess]: Starting monitored process 397 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:13,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (397)] Waiting until timeout for monitored process [2022-02-10 02:57:13,744 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:57:13,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:13,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:13,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:14,101 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:57:14,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:14,696 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:14,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236294301] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:14,696 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:14,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 18] total 39 [2022-02-10 02:57:14,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992467995] [2022-02-10 02:57:14,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:14,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:57:14,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:14,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:57:14,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1442, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:57:14,697 INFO L87 Difference]: Start difference. First operand 17111 states and 56486 transitions. Second operand has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:15,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:15,325 INFO L93 Difference]: Finished difference Result 17243 states and 56627 transitions. [2022-02-10 02:57:15,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:57:15,326 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:15,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:15,361 INFO L225 Difference]: With dead ends: 17243 [2022-02-10 02:57:15,362 INFO L226 Difference]: Without dead ends: 17236 [2022-02-10 02:57:15,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 20 SyntacticMatches, 12 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=149, Invalid=1657, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:57:15,362 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 128 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:15,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 753 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:57:15,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17236 states. [2022-02-10 02:57:15,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17236 to 17104. [2022-02-10 02:57:15,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17104 states, 17103 states have (on average 3.301058293866573) internal successors, (56458), 17103 states have internal predecessors, (56458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:15,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17104 states to 17104 states and 56458 transitions. [2022-02-10 02:57:15,702 INFO L78 Accepts]: Start accepts. Automaton has 17104 states and 56458 transitions. Word has length 27 [2022-02-10 02:57:15,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:15,703 INFO L470 AbstractCegarLoop]: Abstraction has 17104 states and 56458 transitions. [2022-02-10 02:57:15,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:15,703 INFO L276 IsEmpty]: Start isEmpty. Operand 17104 states and 56458 transitions. [2022-02-10 02:57:15,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:15,727 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:15,727 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:15,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (397)] Forceful destruction successful, exit code 0 [2022-02-10 02:57:15,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 397 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable400 [2022-02-10 02:57:15,928 INFO L402 AbstractCegarLoop]: === Iteration 402 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:15,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:15,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1235135339, now seen corresponding path program 396 times [2022-02-10 02:57:15,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:15,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403621875] [2022-02-10 02:57:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:15,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:16,144 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:16,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:16,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403621875] [2022-02-10 02:57:16,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403621875] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:16,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115839792] [2022-02-10 02:57:16,144 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:57:16,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:16,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:16,145 INFO L229 MonitoredProcess]: Starting monitored process 398 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:16,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (398)] Waiting until timeout for monitored process [2022-02-10 02:57:16,174 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:57:16,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:16,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:16,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:16,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:17,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115839792] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:17,031 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:17,031 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18] total 40 [2022-02-10 02:57:17,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482673211] [2022-02-10 02:57:17,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:17,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:57:17,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:17,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:57:17,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:57:17,032 INFO L87 Difference]: Start difference. First operand 17104 states and 56458 transitions. Second operand has 41 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 40 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:17,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:17,857 INFO L93 Difference]: Finished difference Result 17689 states and 58002 transitions. [2022-02-10 02:57:17,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:57:17,857 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 40 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:17,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:17,900 INFO L225 Difference]: With dead ends: 17689 [2022-02-10 02:57:17,900 INFO L226 Difference]: Without dead ends: 17679 [2022-02-10 02:57:17,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=1822, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:57:17,900 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 244 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 1810 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:17,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 1192 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1810 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:57:17,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17679 states. [2022-02-10 02:57:18,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17679 to 17419. [2022-02-10 02:57:18,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17419 states, 17418 states have (on average 3.3083591686760823) internal successors, (57625), 17418 states have internal predecessors, (57625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:18,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17419 states to 17419 states and 57625 transitions. [2022-02-10 02:57:18,338 INFO L78 Accepts]: Start accepts. Automaton has 17419 states and 57625 transitions. Word has length 27 [2022-02-10 02:57:18,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:18,338 INFO L470 AbstractCegarLoop]: Abstraction has 17419 states and 57625 transitions. [2022-02-10 02:57:18,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 40 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand 17419 states and 57625 transitions. [2022-02-10 02:57:18,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:18,363 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:18,363 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:18,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (398)] Ended with exit code 0 [2022-02-10 02:57:18,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401,398 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:18,564 INFO L402 AbstractCegarLoop]: === Iteration 403 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:18,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:18,564 INFO L85 PathProgramCache]: Analyzing trace with hash 2079143719, now seen corresponding path program 397 times [2022-02-10 02:57:18,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:18,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124609444] [2022-02-10 02:57:18,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:18,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:18,827 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:18,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124609444] [2022-02-10 02:57:18,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124609444] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:18,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468973836] [2022-02-10 02:57:18,827 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:57:18,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:18,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:18,828 INFO L229 MonitoredProcess]: Starting monitored process 399 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:18,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (399)] Waiting until timeout for monitored process [2022-02-10 02:57:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:18,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:18,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:19,144 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:19,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:19,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468973836] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:19,701 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:19,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18] total 40 [2022-02-10 02:57:19,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342573213] [2022-02-10 02:57:19,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:19,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:57:19,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:19,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:57:19,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:57:19,702 INFO L87 Difference]: Start difference. First operand 17419 states and 57625 transitions. Second operand has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 40 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:20,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:20,560 INFO L93 Difference]: Finished difference Result 17688 states and 57998 transitions. [2022-02-10 02:57:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:57:20,560 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 40 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:20,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:20,601 INFO L225 Difference]: With dead ends: 17688 [2022-02-10 02:57:20,601 INFO L226 Difference]: Without dead ends: 17676 [2022-02-10 02:57:20,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=1822, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:57:20,602 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 171 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:20,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 1395 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:57:20,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17676 states. [2022-02-10 02:57:20,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17676 to 17364. [2022-02-10 02:57:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17364 states, 17363 states have (on average 3.304210101940909) internal successors, (57371), 17363 states have internal predecessors, (57371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:20,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17364 states to 17364 states and 57371 transitions. [2022-02-10 02:57:20,958 INFO L78 Accepts]: Start accepts. Automaton has 17364 states and 57371 transitions. Word has length 27 [2022-02-10 02:57:20,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:20,958 INFO L470 AbstractCegarLoop]: Abstraction has 17364 states and 57371 transitions. [2022-02-10 02:57:20,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 40 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:20,958 INFO L276 IsEmpty]: Start isEmpty. Operand 17364 states and 57371 transitions. [2022-02-10 02:57:20,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:20,983 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:20,983 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:20,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (399)] Ended with exit code 0 [2022-02-10 02:57:21,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 399 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable402 [2022-02-10 02:57:21,183 INFO L402 AbstractCegarLoop]: === Iteration 404 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:21,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:21,184 INFO L85 PathProgramCache]: Analyzing trace with hash 18283917, now seen corresponding path program 398 times [2022-02-10 02:57:21,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:21,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132702005] [2022-02-10 02:57:21,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:21,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:21,404 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:21,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132702005] [2022-02-10 02:57:21,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132702005] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:21,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530028358] [2022-02-10 02:57:21,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:57:21,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:21,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:21,405 INFO L229 MonitoredProcess]: Starting monitored process 400 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:21,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (400)] Waiting until timeout for monitored process [2022-02-10 02:57:21,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:57:21,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:21,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:21,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:21,731 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:21,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:22,311 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:22,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530028358] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:22,311 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:22,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18] total 39 [2022-02-10 02:57:22,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879579419] [2022-02-10 02:57:22,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:22,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:57:22,312 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:22,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:57:22,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:57:22,312 INFO L87 Difference]: Start difference. First operand 17364 states and 57371 transitions. Second operand has 40 states, 40 states have (on average 1.55) internal successors, (62), 39 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:23,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:23,272 INFO L93 Difference]: Finished difference Result 17631 states and 57721 transitions. [2022-02-10 02:57:23,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:57:23,272 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.55) internal successors, (62), 39 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:23,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:23,308 INFO L225 Difference]: With dead ends: 17631 [2022-02-10 02:57:23,308 INFO L226 Difference]: Without dead ends: 17618 [2022-02-10 02:57:23,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=1827, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:57:23,309 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 213 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:23,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 1277 Invalid, 1896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:57:23,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17618 states. [2022-02-10 02:57:23,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17618 to 17323. [2022-02-10 02:57:23,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17323 states, 17322 states have (on average 3.302505484355155) internal successors, (57206), 17322 states have internal predecessors, (57206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:23,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17323 states to 17323 states and 57206 transitions. [2022-02-10 02:57:23,700 INFO L78 Accepts]: Start accepts. Automaton has 17323 states and 57206 transitions. Word has length 27 [2022-02-10 02:57:23,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:23,700 INFO L470 AbstractCegarLoop]: Abstraction has 17323 states and 57206 transitions. [2022-02-10 02:57:23,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.55) internal successors, (62), 39 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:23,701 INFO L276 IsEmpty]: Start isEmpty. Operand 17323 states and 57206 transitions. [2022-02-10 02:57:23,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:23,726 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:23,726 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:23,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (400)] Ended with exit code 0 [2022-02-10 02:57:23,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 400 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable403 [2022-02-10 02:57:23,926 INFO L402 AbstractCegarLoop]: === Iteration 405 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:23,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:23,926 INFO L85 PathProgramCache]: Analyzing trace with hash 556139495, now seen corresponding path program 399 times [2022-02-10 02:57:23,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:23,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172585339] [2022-02-10 02:57:23,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:23,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:24,146 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:24,146 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172585339] [2022-02-10 02:57:24,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172585339] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:24,146 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830305966] [2022-02-10 02:57:24,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:57:24,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:24,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:24,147 INFO L229 MonitoredProcess]: Starting monitored process 401 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:24,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (401)] Waiting until timeout for monitored process [2022-02-10 02:57:24,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:57:24,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:24,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:24,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:24,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:25,157 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:25,157 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830305966] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:25,158 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:25,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18] total 38 [2022-02-10 02:57:25,158 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541077347] [2022-02-10 02:57:25,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:25,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 02:57:25,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:25,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 02:57:25,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:57:25,158 INFO L87 Difference]: Start difference. First operand 17323 states and 57206 transitions. Second operand has 39 states, 39 states have (on average 1.564102564102564) internal successors, (61), 38 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:26,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:26,042 INFO L93 Difference]: Finished difference Result 17597 states and 57550 transitions. [2022-02-10 02:57:26,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:57:26,042 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.564102564102564) internal successors, (61), 38 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:26,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:26,080 INFO L225 Difference]: With dead ends: 17597 [2022-02-10 02:57:26,081 INFO L226 Difference]: Without dead ends: 17583 [2022-02-10 02:57:26,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=154, Invalid=1826, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:57:26,081 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 240 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:26,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 1062 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:57:26,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17583 states. [2022-02-10 02:57:26,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17583 to 17285. [2022-02-10 02:57:26,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17285 states, 17284 states have (on average 3.301319139088174) internal successors, (57060), 17284 states have internal predecessors, (57060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:26,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17285 states to 17285 states and 57060 transitions. [2022-02-10 02:57:26,561 INFO L78 Accepts]: Start accepts. Automaton has 17285 states and 57060 transitions. Word has length 27 [2022-02-10 02:57:26,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:26,562 INFO L470 AbstractCegarLoop]: Abstraction has 17285 states and 57060 transitions. [2022-02-10 02:57:26,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.564102564102564) internal successors, (61), 38 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:26,562 INFO L276 IsEmpty]: Start isEmpty. Operand 17285 states and 57060 transitions. [2022-02-10 02:57:26,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:26,586 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:26,586 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:26,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (401)] Ended with exit code 0 [2022-02-10 02:57:26,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 401 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable404 [2022-02-10 02:57:26,787 INFO L402 AbstractCegarLoop]: === Iteration 406 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:26,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:26,787 INFO L85 PathProgramCache]: Analyzing trace with hash 49793229, now seen corresponding path program 400 times [2022-02-10 02:57:26,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:26,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399163833] [2022-02-10 02:57:26,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:26,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:27,021 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:27,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399163833] [2022-02-10 02:57:27,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399163833] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:27,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956405435] [2022-02-10 02:57:27,021 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:57:27,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:27,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:27,022 INFO L229 MonitoredProcess]: Starting monitored process 402 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:27,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (402)] Waiting until timeout for monitored process [2022-02-10 02:57:27,050 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:57:27,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:27,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:27,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:27,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:27,862 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:27,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956405435] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:27,862 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:27,862 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18] total 37 [2022-02-10 02:57:27,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588092010] [2022-02-10 02:57:27,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:27,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 02:57:27,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:27,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 02:57:27,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1300, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:57:27,863 INFO L87 Difference]: Start difference. First operand 17285 states and 57060 transitions. Second operand has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:28,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:28,999 INFO L93 Difference]: Finished difference Result 17564 states and 57394 transitions. [2022-02-10 02:57:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 02:57:29,000 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:29,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:29,038 INFO L225 Difference]: With dead ends: 17564 [2022-02-10 02:57:29,038 INFO L226 Difference]: Without dead ends: 17549 [2022-02-10 02:57:29,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=1825, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:57:29,039 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 177 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:29,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 1433 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 02:57:29,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17549 states. [2022-02-10 02:57:29,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17549 to 17253. [2022-02-10 02:57:29,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17253 states, 17252 states have (on average 3.3004869000695574) internal successors, (56940), 17252 states have internal predecessors, (56940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:29,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17253 states to 17253 states and 56940 transitions. [2022-02-10 02:57:29,383 INFO L78 Accepts]: Start accepts. Automaton has 17253 states and 56940 transitions. Word has length 27 [2022-02-10 02:57:29,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:29,384 INFO L470 AbstractCegarLoop]: Abstraction has 17253 states and 56940 transitions. [2022-02-10 02:57:29,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:29,384 INFO L276 IsEmpty]: Start isEmpty. Operand 17253 states and 56940 transitions. [2022-02-10 02:57:29,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:29,409 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:29,409 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:29,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (402)] Forceful destruction successful, exit code 0 [2022-02-10 02:57:29,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405,402 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:29,610 INFO L402 AbstractCegarLoop]: === Iteration 407 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:29,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:29,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1532928167, now seen corresponding path program 401 times [2022-02-10 02:57:29,610 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:29,610 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912814838] [2022-02-10 02:57:29,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:29,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:29,849 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:29,849 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912814838] [2022-02-10 02:57:29,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912814838] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:29,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012100932] [2022-02-10 02:57:29,850 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:57:29,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:29,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:29,851 INFO L229 MonitoredProcess]: Starting monitored process 403 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:29,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (403)] Waiting until timeout for monitored process [2022-02-10 02:57:29,881 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:57:29,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:29,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:29,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:30,203 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:30,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:30,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012100932] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:30,672 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:30,672 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18] total 36 [2022-02-10 02:57:30,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497831416] [2022-02-10 02:57:30,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:30,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:57:30,673 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:30,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:57:30,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:57:30,673 INFO L87 Difference]: Start difference. First operand 17253 states and 56940 transitions. Second operand has 37 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 36 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:31,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:31,857 INFO L93 Difference]: Finished difference Result 17470 states and 57191 transitions. [2022-02-10 02:57:31,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:57:31,857 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 36 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:31,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:31,896 INFO L225 Difference]: With dead ends: 17470 [2022-02-10 02:57:31,896 INFO L226 Difference]: Without dead ends: 17455 [2022-02-10 02:57:31,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=1824, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:57:31,897 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 140 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 2225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:31,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 1214 Invalid, 2225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 02:57:31,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17455 states. [2022-02-10 02:57:32,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17455 to 17224. [2022-02-10 02:57:32,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17224 states, 17223 states have (on average 3.3009347964930615) internal successors, (56852), 17223 states have internal predecessors, (56852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:32,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17224 states to 17224 states and 56852 transitions. [2022-02-10 02:57:32,255 INFO L78 Accepts]: Start accepts. Automaton has 17224 states and 56852 transitions. Word has length 27 [2022-02-10 02:57:32,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:32,255 INFO L470 AbstractCegarLoop]: Abstraction has 17224 states and 56852 transitions. [2022-02-10 02:57:32,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 36 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:32,255 INFO L276 IsEmpty]: Start isEmpty. Operand 17224 states and 56852 transitions. [2022-02-10 02:57:32,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:32,280 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:32,280 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:32,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (403)] Ended with exit code 0 [2022-02-10 02:57:32,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 403 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable406 [2022-02-10 02:57:32,481 INFO L402 AbstractCegarLoop]: === Iteration 408 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:32,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:32,481 INFO L85 PathProgramCache]: Analyzing trace with hash 265470989, now seen corresponding path program 402 times [2022-02-10 02:57:32,481 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:32,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580918852] [2022-02-10 02:57:32,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:32,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:32,794 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:32,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580918852] [2022-02-10 02:57:32,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580918852] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:32,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246827829] [2022-02-10 02:57:32,794 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:57:32,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:32,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:32,795 INFO L229 MonitoredProcess]: Starting monitored process 404 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:32,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (404)] Waiting until timeout for monitored process [2022-02-10 02:57:32,842 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:57:32,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:32,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:32,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:33,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:33,687 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:33,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246827829] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:33,688 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:33,688 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18] total 35 [2022-02-10 02:57:33,688 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324782129] [2022-02-10 02:57:33,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:33,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:57:33,688 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:33,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:57:33,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1164, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:57:33,689 INFO L87 Difference]: Start difference. First operand 17224 states and 56852 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:34,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:34,604 INFO L93 Difference]: Finished difference Result 17397 states and 57043 transitions. [2022-02-10 02:57:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 02:57:34,604 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:34,641 INFO L225 Difference]: With dead ends: 17397 [2022-02-10 02:57:34,641 INFO L226 Difference]: Without dead ends: 17392 [2022-02-10 02:57:34,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=1669, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:57:34,642 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 184 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:34,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 861 Invalid, 1699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:57:34,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17392 states. [2022-02-10 02:57:35,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17392 to 17228. [2022-02-10 02:57:35,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17228 states, 17227 states have (on average 3.300400534045394) internal successors, (56856), 17227 states have internal predecessors, (56856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:35,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17228 states to 17228 states and 56856 transitions. [2022-02-10 02:57:35,072 INFO L78 Accepts]: Start accepts. Automaton has 17228 states and 56856 transitions. Word has length 27 [2022-02-10 02:57:35,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:35,072 INFO L470 AbstractCegarLoop]: Abstraction has 17228 states and 56856 transitions. [2022-02-10 02:57:35,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:35,072 INFO L276 IsEmpty]: Start isEmpty. Operand 17228 states and 56856 transitions. [2022-02-10 02:57:35,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:35,097 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:35,097 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:35,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (404)] Ended with exit code 0 [2022-02-10 02:57:35,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 404 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable407 [2022-02-10 02:57:35,298 INFO L402 AbstractCegarLoop]: === Iteration 409 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:35,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:35,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1671945873, now seen corresponding path program 403 times [2022-02-10 02:57:35,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:35,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722866270] [2022-02-10 02:57:35,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:35,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:35,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:35,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722866270] [2022-02-10 02:57:35,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722866270] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:35,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075348053] [2022-02-10 02:57:35,521 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:57:35,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:35,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:35,522 INFO L229 MonitoredProcess]: Starting monitored process 405 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:35,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (405)] Waiting until timeout for monitored process [2022-02-10 02:57:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:35,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:35,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:57:35,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:36,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075348053] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:36,476 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:36,477 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 18] total 39 [2022-02-10 02:57:36,477 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829675231] [2022-02-10 02:57:36,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:36,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:57:36,477 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:36,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:57:36,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1442, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:57:36,477 INFO L87 Difference]: Start difference. First operand 17228 states and 56856 transitions. Second operand has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:37,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:37,036 INFO L93 Difference]: Finished difference Result 17337 states and 56971 transitions. [2022-02-10 02:57:37,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:57:37,036 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:37,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:37,075 INFO L225 Difference]: With dead ends: 17337 [2022-02-10 02:57:37,075 INFO L226 Difference]: Without dead ends: 17330 [2022-02-10 02:57:37,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 21 SyntacticMatches, 11 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=149, Invalid=1657, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:57:37,076 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 206 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:37,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 673 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:57:37,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17330 states. [2022-02-10 02:57:37,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17330 to 17222. [2022-02-10 02:57:37,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17222 states, 17221 states have (on average 3.3002148539573777) internal successors, (56833), 17221 states have internal predecessors, (56833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17222 states to 17222 states and 56833 transitions. [2022-02-10 02:57:37,460 INFO L78 Accepts]: Start accepts. Automaton has 17222 states and 56833 transitions. Word has length 27 [2022-02-10 02:57:37,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:37,460 INFO L470 AbstractCegarLoop]: Abstraction has 17222 states and 56833 transitions. [2022-02-10 02:57:37,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:37,460 INFO L276 IsEmpty]: Start isEmpty. Operand 17222 states and 56833 transitions. [2022-02-10 02:57:37,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:37,486 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:37,486 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:37,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (405)] Ended with exit code 0 [2022-02-10 02:57:37,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408,405 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:37,687 INFO L402 AbstractCegarLoop]: === Iteration 410 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:37,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:37,687 INFO L85 PathProgramCache]: Analyzing trace with hash -396040913, now seen corresponding path program 404 times [2022-02-10 02:57:37,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:37,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146132894] [2022-02-10 02:57:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:37,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:37,914 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:37,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146132894] [2022-02-10 02:57:37,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146132894] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:37,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791079635] [2022-02-10 02:57:37,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:57:37,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:37,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:37,915 INFO L229 MonitoredProcess]: Starting monitored process 406 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:37,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (406)] Waiting until timeout for monitored process [2022-02-10 02:57:37,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:57:37,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:37,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:37,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:38,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:38,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791079635] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:38,817 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:38,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 40 [2022-02-10 02:57:38,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373074739] [2022-02-10 02:57:38,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:38,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:57:38,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:38,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:57:38,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:57:38,818 INFO L87 Difference]: Start difference. First operand 17222 states and 56833 transitions. Second operand has 41 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 40 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:39,842 INFO L93 Difference]: Finished difference Result 17667 states and 57832 transitions. [2022-02-10 02:57:39,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:57:39,842 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 40 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:39,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:39,879 INFO L225 Difference]: With dead ends: 17667 [2022-02-10 02:57:39,879 INFO L226 Difference]: Without dead ends: 17657 [2022-02-10 02:57:39,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=1822, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:57:39,879 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 228 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 2085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:39,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 1363 Invalid, 2085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:57:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17657 states. [2022-02-10 02:57:40,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17657 to 17417. [2022-02-10 02:57:40,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17417 states, 17416 states have (on average 3.3043178686265504) internal successors, (57548), 17416 states have internal predecessors, (57548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:40,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17417 states to 17417 states and 57548 transitions. [2022-02-10 02:57:40,307 INFO L78 Accepts]: Start accepts. Automaton has 17417 states and 57548 transitions. Word has length 27 [2022-02-10 02:57:40,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:40,307 INFO L470 AbstractCegarLoop]: Abstraction has 17417 states and 57548 transitions. [2022-02-10 02:57:40,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 40 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:40,308 INFO L276 IsEmpty]: Start isEmpty. Operand 17417 states and 57548 transitions. [2022-02-10 02:57:40,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:40,336 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:40,336 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:40,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (406)] Forceful destruction successful, exit code 0 [2022-02-10 02:57:40,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409,406 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:40,557 INFO L402 AbstractCegarLoop]: === Iteration 411 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:40,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:40,558 INFO L85 PathProgramCache]: Analyzing trace with hash 447967467, now seen corresponding path program 405 times [2022-02-10 02:57:40,558 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:40,558 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066377148] [2022-02-10 02:57:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:40,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:40,764 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:40,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066377148] [2022-02-10 02:57:40,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066377148] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:40,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039881858] [2022-02-10 02:57:40,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:57:40,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:40,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:40,765 INFO L229 MonitoredProcess]: Starting monitored process 407 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:40,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (407)] Waiting until timeout for monitored process [2022-02-10 02:57:40,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:57:40,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:40,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:40,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:41,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:41,648 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:41,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039881858] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:41,648 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:41,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 40 [2022-02-10 02:57:41,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836571546] [2022-02-10 02:57:41,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:41,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:57:41,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:41,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:57:41,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:57:41,649 INFO L87 Difference]: Start difference. First operand 17417 states and 57548 transitions. Second operand has 41 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 40 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:42,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:42,602 INFO L93 Difference]: Finished difference Result 17665 states and 57828 transitions. [2022-02-10 02:57:42,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:57:42,602 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 40 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:42,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:42,640 INFO L225 Difference]: With dead ends: 17665 [2022-02-10 02:57:42,640 INFO L226 Difference]: Without dead ends: 17653 [2022-02-10 02:57:42,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=1822, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:57:42,641 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 192 mSDsluCounter, 2178 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:42,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 1526 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:57:42,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17653 states. [2022-02-10 02:57:43,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17653 to 17381. [2022-02-10 02:57:43,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17381 states, 17380 states have (on average 3.302416570771001) internal successors, (57396), 17380 states have internal predecessors, (57396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17381 states to 17381 states and 57396 transitions. [2022-02-10 02:57:43,171 INFO L78 Accepts]: Start accepts. Automaton has 17381 states and 57396 transitions. Word has length 27 [2022-02-10 02:57:43,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:43,172 INFO L470 AbstractCegarLoop]: Abstraction has 17381 states and 57396 transitions. [2022-02-10 02:57:43,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 40 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:43,172 INFO L276 IsEmpty]: Start isEmpty. Operand 17381 states and 57396 transitions. [2022-02-10 02:57:43,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:43,198 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:43,198 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:43,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (407)] Ended with exit code 0 [2022-02-10 02:57:43,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 407 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable410 [2022-02-10 02:57:43,398 INFO L402 AbstractCegarLoop]: === Iteration 412 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:43,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:43,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1612892335, now seen corresponding path program 406 times [2022-02-10 02:57:43,399 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:43,399 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833823976] [2022-02-10 02:57:43,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:43,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:43,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:43,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833823976] [2022-02-10 02:57:43,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833823976] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:43,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430151785] [2022-02-10 02:57:43,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:57:43,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:43,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:43,616 INFO L229 MonitoredProcess]: Starting monitored process 408 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:43,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (408)] Waiting until timeout for monitored process [2022-02-10 02:57:43,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:57:43,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:43,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:43,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:43,963 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:43,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:44,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430151785] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:44,529 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:44,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 39 [2022-02-10 02:57:44,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903888590] [2022-02-10 02:57:44,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:44,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:57:44,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:44,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:57:44,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:57:44,530 INFO L87 Difference]: Start difference. First operand 17381 states and 57396 transitions. Second operand has 40 states, 40 states have (on average 1.525) internal successors, (61), 39 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:45,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:45,441 INFO L93 Difference]: Finished difference Result 17633 states and 57669 transitions. [2022-02-10 02:57:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:57:45,442 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.525) internal successors, (61), 39 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:45,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:45,484 INFO L225 Difference]: With dead ends: 17633 [2022-02-10 02:57:45,485 INFO L226 Difference]: Without dead ends: 17620 [2022-02-10 02:57:45,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=1827, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:57:45,485 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 212 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 1900 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:45,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 1296 Invalid, 1921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1900 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:57:45,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17620 states. [2022-02-10 02:57:45,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17620 to 17357. [2022-02-10 02:57:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17357 states, 17356 states have (on average 3.301509564415764) internal successors, (57301), 17356 states have internal predecessors, (57301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:45,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17357 states to 17357 states and 57301 transitions. [2022-02-10 02:57:45,843 INFO L78 Accepts]: Start accepts. Automaton has 17357 states and 57301 transitions. Word has length 27 [2022-02-10 02:57:45,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:45,843 INFO L470 AbstractCegarLoop]: Abstraction has 17357 states and 57301 transitions. [2022-02-10 02:57:45,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.525) internal successors, (61), 39 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:45,843 INFO L276 IsEmpty]: Start isEmpty. Operand 17357 states and 57301 transitions. [2022-02-10 02:57:45,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:45,872 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:45,872 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:45,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (408)] Forceful destruction successful, exit code 0 [2022-02-10 02:57:46,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 408 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable411 [2022-02-10 02:57:46,073 INFO L402 AbstractCegarLoop]: === Iteration 413 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:46,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:46,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1075036757, now seen corresponding path program 407 times [2022-02-10 02:57:46,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:46,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980766731] [2022-02-10 02:57:46,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:46,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:46,309 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:46,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980766731] [2022-02-10 02:57:46,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980766731] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:46,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199531997] [2022-02-10 02:57:46,309 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:57:46,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:46,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:46,310 INFO L229 MonitoredProcess]: Starting monitored process 409 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:46,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (409)] Waiting until timeout for monitored process [2022-02-10 02:57:46,339 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:57:46,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:46,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:46,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:46,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:47,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199531997] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:47,201 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:47,201 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 38 [2022-02-10 02:57:47,201 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393146632] [2022-02-10 02:57:47,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:47,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 02:57:47,201 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:47,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 02:57:47,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:57:47,202 INFO L87 Difference]: Start difference. First operand 17357 states and 57301 transitions. Second operand has 39 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 38 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:48,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:48,196 INFO L93 Difference]: Finished difference Result 17622 states and 57588 transitions. [2022-02-10 02:57:48,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 02:57:48,196 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 38 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:48,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:48,234 INFO L225 Difference]: With dead ends: 17622 [2022-02-10 02:57:48,234 INFO L226 Difference]: Without dead ends: 17608 [2022-02-10 02:57:48,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=154, Invalid=1826, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:57:48,234 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 233 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 1881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:48,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 1165 Invalid, 1881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:57:48,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17608 states. [2022-02-10 02:57:48,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17608 to 17334. [2022-02-10 02:57:48,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17334 states, 17333 states have (on average 3.3008711705994345) internal successors, (57214), 17333 states have internal predecessors, (57214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:48,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17334 states to 17334 states and 57214 transitions. [2022-02-10 02:57:48,587 INFO L78 Accepts]: Start accepts. Automaton has 17334 states and 57214 transitions. Word has length 27 [2022-02-10 02:57:48,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:48,587 INFO L470 AbstractCegarLoop]: Abstraction has 17334 states and 57214 transitions. [2022-02-10 02:57:48,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 38 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:48,587 INFO L276 IsEmpty]: Start isEmpty. Operand 17334 states and 57214 transitions. [2022-02-10 02:57:48,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:48,614 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:48,615 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:48,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (409)] Forceful destruction successful, exit code 0 [2022-02-10 02:57:48,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 409 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable412 [2022-02-10 02:57:48,815 INFO L402 AbstractCegarLoop]: === Iteration 414 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:48,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:48,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1581383023, now seen corresponding path program 408 times [2022-02-10 02:57:48,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:48,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528461245] [2022-02-10 02:57:48,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:48,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:49,041 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:49,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528461245] [2022-02-10 02:57:49,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528461245] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:49,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79506819] [2022-02-10 02:57:49,041 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:57:49,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:49,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:49,042 INFO L229 MonitoredProcess]: Starting monitored process 410 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:49,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (410)] Waiting until timeout for monitored process [2022-02-10 02:57:49,072 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:57:49,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:49,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:49,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:49,371 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:49,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:49,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79506819] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:49,865 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:49,865 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 37 [2022-02-10 02:57:49,865 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476053694] [2022-02-10 02:57:49,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:49,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 02:57:49,865 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:49,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 02:57:49,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1300, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:57:49,866 INFO L87 Difference]: Start difference. First operand 17334 states and 57214 transitions. Second operand has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 37 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:50,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:50,975 INFO L93 Difference]: Finished difference Result 17614 states and 57516 transitions. [2022-02-10 02:57:50,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:57:50,975 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 37 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:50,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:51,015 INFO L225 Difference]: With dead ends: 17614 [2022-02-10 02:57:51,015 INFO L226 Difference]: Without dead ends: 17599 [2022-02-10 02:57:51,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=1825, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:57:51,016 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 208 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 2277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:51,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 1357 Invalid, 2277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:57:51,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17599 states. [2022-02-10 02:57:51,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17599 to 17312. [2022-02-10 02:57:51,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17312 states, 17311 states have (on average 3.300502570619837) internal successors, (57135), 17311 states have internal predecessors, (57135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:51,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17312 states to 17312 states and 57135 transitions. [2022-02-10 02:57:51,453 INFO L78 Accepts]: Start accepts. Automaton has 17312 states and 57135 transitions. Word has length 27 [2022-02-10 02:57:51,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:51,453 INFO L470 AbstractCegarLoop]: Abstraction has 17312 states and 57135 transitions. [2022-02-10 02:57:51,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 37 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:51,454 INFO L276 IsEmpty]: Start isEmpty. Operand 17312 states and 57135 transitions. [2022-02-10 02:57:51,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:51,484 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:51,484 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:51,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (410)] Ended with exit code 0 [2022-02-10 02:57:51,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 410 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable413 [2022-02-10 02:57:51,684 INFO L402 AbstractCegarLoop]: === Iteration 415 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:51,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:51,685 INFO L85 PathProgramCache]: Analyzing trace with hash -98248085, now seen corresponding path program 409 times [2022-02-10 02:57:51,685 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:51,685 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264939890] [2022-02-10 02:57:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:51,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:51,931 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:51,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264939890] [2022-02-10 02:57:51,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264939890] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:51,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865323584] [2022-02-10 02:57:51,931 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:57:51,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:51,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:51,932 INFO L229 MonitoredProcess]: Starting monitored process 411 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:51,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (411)] Waiting until timeout for monitored process [2022-02-10 02:57:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:51,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:51,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:52,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:52,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865323584] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:52,718 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:52,718 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 36 [2022-02-10 02:57:52,718 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605688245] [2022-02-10 02:57:52,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:52,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:57:52,718 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:52,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:57:52,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:57:52,719 INFO L87 Difference]: Start difference. First operand 17312 states and 57135 transitions. Second operand has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:53,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:53,860 INFO L93 Difference]: Finished difference Result 17605 states and 57449 transitions. [2022-02-10 02:57:53,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 02:57:53,860 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:53,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:53,902 INFO L225 Difference]: With dead ends: 17605 [2022-02-10 02:57:53,902 INFO L226 Difference]: Without dead ends: 17589 [2022-02-10 02:57:53,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=1824, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:57:53,902 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 213 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 2360 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 2379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:53,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 1347 Invalid, 2379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2360 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 02:57:53,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17589 states. [2022-02-10 02:57:54,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17589 to 17291. [2022-02-10 02:57:54,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17291 states, 17290 states have (on average 3.3004626951995375) internal successors, (57065), 17290 states have internal predecessors, (57065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:54,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17291 states to 17291 states and 57065 transitions. [2022-02-10 02:57:54,269 INFO L78 Accepts]: Start accepts. Automaton has 17291 states and 57065 transitions. Word has length 27 [2022-02-10 02:57:54,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:54,269 INFO L470 AbstractCegarLoop]: Abstraction has 17291 states and 57065 transitions. [2022-02-10 02:57:54,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:54,269 INFO L276 IsEmpty]: Start isEmpty. Operand 17291 states and 57065 transitions. [2022-02-10 02:57:54,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:54,294 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:54,294 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:54,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (411)] Ended with exit code 0 [2022-02-10 02:57:54,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414,411 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:54,495 INFO L402 AbstractCegarLoop]: === Iteration 416 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:54,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:54,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1365705263, now seen corresponding path program 410 times [2022-02-10 02:57:54,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:54,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355681970] [2022-02-10 02:57:54,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:54,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:54,733 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:54,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355681970] [2022-02-10 02:57:54,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355681970] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:54,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868041020] [2022-02-10 02:57:54,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:57:54,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:54,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:54,734 INFO L229 MonitoredProcess]: Starting monitored process 412 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:54,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (412)] Waiting until timeout for monitored process [2022-02-10 02:57:54,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:57:54,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:54,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:54,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:55,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:55,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868041020] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:55,549 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:55,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 35 [2022-02-10 02:57:55,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428653816] [2022-02-10 02:57:55,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:55,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:57:55,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:55,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:57:55,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1164, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:57:55,549 INFO L87 Difference]: Start difference. First operand 17291 states and 57065 transitions. Second operand has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:56,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:56,688 INFO L93 Difference]: Finished difference Result 17513 states and 57301 transitions. [2022-02-10 02:57:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 02:57:56,688 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:56,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:56,726 INFO L225 Difference]: With dead ends: 17513 [2022-02-10 02:57:56,727 INFO L226 Difference]: Without dead ends: 17497 [2022-02-10 02:57:56,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 31 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=157, Invalid=1823, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:57:56,727 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 178 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 2329 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:56,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 1230 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2329 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:57:56,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17497 states. [2022-02-10 02:57:57,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17497 to 17271. [2022-02-10 02:57:57,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17271 states, 17270 states have (on average 3.3007527504342793) internal successors, (57004), 17270 states have internal predecessors, (57004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17271 states to 17271 states and 57004 transitions. [2022-02-10 02:57:57,087 INFO L78 Accepts]: Start accepts. Automaton has 17271 states and 57004 transitions. Word has length 27 [2022-02-10 02:57:57,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:57,087 INFO L470 AbstractCegarLoop]: Abstraction has 17271 states and 57004 transitions. [2022-02-10 02:57:57,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:57,088 INFO L276 IsEmpty]: Start isEmpty. Operand 17271 states and 57004 transitions. [2022-02-10 02:57:57,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:57,115 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:57,115 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:57,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (412)] Ended with exit code 0 [2022-02-10 02:57:57,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 412 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable415 [2022-02-10 02:57:57,316 INFO L402 AbstractCegarLoop]: === Iteration 417 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:57:57,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:57:57,316 INFO L85 PathProgramCache]: Analyzing trace with hash -2002172117, now seen corresponding path program 411 times [2022-02-10 02:57:57,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:57:57,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547125540] [2022-02-10 02:57:57,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:57:57,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:57:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:57:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:57,579 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:57:57,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547125540] [2022-02-10 02:57:57,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547125540] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:57:57,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523689200] [2022-02-10 02:57:57,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:57:57,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:57:57,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:57:57,581 INFO L229 MonitoredProcess]: Starting monitored process 413 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:57:57,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (413)] Waiting until timeout for monitored process [2022-02-10 02:57:57,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:57:57,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:57:57,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:57:57,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:57:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:57,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:57:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:57:58,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523689200] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:57:58,330 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:57:58,330 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 34 [2022-02-10 02:57:58,330 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150963406] [2022-02-10 02:57:58,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:57:58,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:57:58,331 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:57:58,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:57:58,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1099, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:57:58,331 INFO L87 Difference]: Start difference. First operand 17271 states and 57004 transitions. Second operand has 35 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:59,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:57:59,431 INFO L93 Difference]: Finished difference Result 17447 states and 57188 transitions. [2022-02-10 02:57:59,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 02:57:59,432 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:57:59,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:57:59,470 INFO L225 Difference]: With dead ends: 17447 [2022-02-10 02:57:59,471 INFO L226 Difference]: Without dead ends: 17442 [2022-02-10 02:57:59,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 32 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=1668, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:57:59,471 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 148 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:57:59,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 1132 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2270 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:57:59,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17442 states. [2022-02-10 02:57:59,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17442 to 17276. [2022-02-10 02:57:59,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17276 states, 17275 states have (on average 3.300086830680174) internal successors, (57009), 17275 states have internal predecessors, (57009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17276 states to 17276 states and 57009 transitions. [2022-02-10 02:57:59,948 INFO L78 Accepts]: Start accepts. Automaton has 17276 states and 57009 transitions. Word has length 27 [2022-02-10 02:57:59,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:57:59,948 INFO L470 AbstractCegarLoop]: Abstraction has 17276 states and 57009 transitions. [2022-02-10 02:57:59,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:57:59,948 INFO L276 IsEmpty]: Start isEmpty. Operand 17276 states and 57009 transitions. [2022-02-10 02:57:59,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:57:59,973 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:57:59,973 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:57:59,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (413)] Forceful destruction successful, exit code 0 [2022-02-10 02:58:00,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 413 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable416 [2022-02-10 02:58:00,174 INFO L402 AbstractCegarLoop]: === Iteration 418 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:00,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:00,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1529338027, now seen corresponding path program 412 times [2022-02-10 02:58:00,175 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:00,175 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602805459] [2022-02-10 02:58:00,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:00,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:00,385 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:00,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602805459] [2022-02-10 02:58:00,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602805459] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:00,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697443673] [2022-02-10 02:58:00,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:58:00,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:00,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:00,387 INFO L229 MonitoredProcess]: Starting monitored process 414 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:00,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (414)] Waiting until timeout for monitored process [2022-02-10 02:58:00,416 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:58:00,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:00,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:00,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:58:00,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:01,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697443673] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:01,365 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:01,365 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 18] total 39 [2022-02-10 02:58:01,365 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349151758] [2022-02-10 02:58:01,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:01,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:58:01,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:01,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:58:01,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1442, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:58:01,366 INFO L87 Difference]: Start difference. First operand 17276 states and 57009 transitions. Second operand has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:01,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:01,940 INFO L93 Difference]: Finished difference Result 17356 states and 57093 transitions. [2022-02-10 02:58:01,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:58:01,940 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:01,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:01,982 INFO L225 Difference]: With dead ends: 17356 [2022-02-10 02:58:01,983 INFO L226 Difference]: Without dead ends: 17352 [2022-02-10 02:58:01,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 20 SyntacticMatches, 12 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=1659, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:58:01,983 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 122 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:01,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 681 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:58:01,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17352 states. [2022-02-10 02:58:02,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17352 to 17270. [2022-02-10 02:58:02,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17270 states, 17269 states have (on average 3.300191093867624) internal successors, (56991), 17269 states have internal predecessors, (56991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:02,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17270 states to 17270 states and 56991 transitions. [2022-02-10 02:58:02,365 INFO L78 Accepts]: Start accepts. Automaton has 17270 states and 56991 transitions. Word has length 27 [2022-02-10 02:58:02,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:02,365 INFO L470 AbstractCegarLoop]: Abstraction has 17270 states and 56991 transitions. [2022-02-10 02:58:02,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:02,365 INFO L276 IsEmpty]: Start isEmpty. Operand 17270 states and 56991 transitions. [2022-02-10 02:58:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:02,392 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:02,392 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:02,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (414)] Forceful destruction successful, exit code 0 [2022-02-10 02:58:02,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417,414 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:02,593 INFO L402 AbstractCegarLoop]: === Iteration 419 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:02,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:02,593 INFO L85 PathProgramCache]: Analyzing trace with hash 577102827, now seen corresponding path program 413 times [2022-02-10 02:58:02,593 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:02,593 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985917128] [2022-02-10 02:58:02,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:02,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:02,806 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:02,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985917128] [2022-02-10 02:58:02,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985917128] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:02,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618522374] [2022-02-10 02:58:02,806 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:58:02,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:02,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:02,807 INFO L229 MonitoredProcess]: Starting monitored process 415 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:02,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (415)] Waiting until timeout for monitored process [2022-02-10 02:58:02,836 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:58:02,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:02,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:02,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:03,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:03,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618522374] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:03,846 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:03,846 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 02:58:03,846 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650615549] [2022-02-10 02:58:03,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:03,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:58:03,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:03,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:58:03,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:58:03,847 INFO L87 Difference]: Start difference. First operand 17270 states and 56991 transitions. Second operand has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 40 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:04,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:04,860 INFO L93 Difference]: Finished difference Result 17592 states and 57571 transitions. [2022-02-10 02:58:04,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:58:04,860 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 40 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:04,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:04,898 INFO L225 Difference]: With dead ends: 17592 [2022-02-10 02:58:04,899 INFO L226 Difference]: Without dead ends: 17584 [2022-02-10 02:58:04,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=154, Invalid=1826, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:58:04,899 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 224 mSDsluCounter, 2332 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:04,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 1569 Invalid, 2363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:58:04,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17584 states. [2022-02-10 02:58:05,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17584 to 17364. [2022-02-10 02:58:05,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17364 states, 17363 states have (on average 3.301733571387433) internal successors, (57328), 17363 states have internal predecessors, (57328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17364 states to 17364 states and 57328 transitions. [2022-02-10 02:58:05,244 INFO L78 Accepts]: Start accepts. Automaton has 17364 states and 57328 transitions. Word has length 27 [2022-02-10 02:58:05,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:05,244 INFO L470 AbstractCegarLoop]: Abstraction has 17364 states and 57328 transitions. [2022-02-10 02:58:05,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 40 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:05,244 INFO L276 IsEmpty]: Start isEmpty. Operand 17364 states and 57328 transitions. [2022-02-10 02:58:05,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:05,274 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:05,274 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:05,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (415)] Ended with exit code 0 [2022-02-10 02:58:05,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable418,415 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:05,474 INFO L402 AbstractCegarLoop]: === Iteration 420 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:05,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:05,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1421111207, now seen corresponding path program 414 times [2022-02-10 02:58:05,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:05,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103520408] [2022-02-10 02:58:05,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:05,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:05,698 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:05,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:05,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103520408] [2022-02-10 02:58:05,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103520408] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:05,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180298336] [2022-02-10 02:58:05,699 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:58:05,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:05,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:05,700 INFO L229 MonitoredProcess]: Starting monitored process 416 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:05,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (416)] Waiting until timeout for monitored process [2022-02-10 02:58:05,734 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:58:05,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:05,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:05,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:06,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:06,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180298336] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:06,620 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:06,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 02:58:06,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339396951] [2022-02-10 02:58:06,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:06,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:58:06,621 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:06,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:58:06,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:58:06,621 INFO L87 Difference]: Start difference. First operand 17364 states and 57328 transitions. Second operand has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 40 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:07,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:07,680 INFO L93 Difference]: Finished difference Result 17594 states and 57572 transitions. [2022-02-10 02:58:07,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:58:07,681 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 40 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:07,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:07,727 INFO L225 Difference]: With dead ends: 17594 [2022-02-10 02:58:07,727 INFO L226 Difference]: Without dead ends: 17583 [2022-02-10 02:58:07,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=154, Invalid=1826, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:58:07,727 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 189 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:07,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 1666 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:58:07,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17583 states. [2022-02-10 02:58:08,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17583 to 17351. [2022-02-10 02:58:08,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17351 states, 17350 states have (on average 3.3012103746397696) internal successors, (57276), 17350 states have internal predecessors, (57276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:08,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17351 states to 17351 states and 57276 transitions. [2022-02-10 02:58:08,220 INFO L78 Accepts]: Start accepts. Automaton has 17351 states and 57276 transitions. Word has length 27 [2022-02-10 02:58:08,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:08,220 INFO L470 AbstractCegarLoop]: Abstraction has 17351 states and 57276 transitions. [2022-02-10 02:58:08,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 40 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:08,221 INFO L276 IsEmpty]: Start isEmpty. Operand 17351 states and 57276 transitions. [2022-02-10 02:58:08,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:08,250 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:08,250 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:08,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (416)] Forceful destruction successful, exit code 0 [2022-02-10 02:58:08,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 416 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable419 [2022-02-10 02:58:08,450 INFO L402 AbstractCegarLoop]: === Iteration 421 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:08,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:08,451 INFO L85 PathProgramCache]: Analyzing trace with hash -639748595, now seen corresponding path program 415 times [2022-02-10 02:58:08,451 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:08,451 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437789372] [2022-02-10 02:58:08,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:08,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:08,678 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:08,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437789372] [2022-02-10 02:58:08,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437789372] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:08,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565202368] [2022-02-10 02:58:08,678 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:58:08,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:08,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:08,679 INFO L229 MonitoredProcess]: Starting monitored process 417 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:08,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (417)] Waiting until timeout for monitored process [2022-02-10 02:58:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:08,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:08,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:09,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:09,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565202368] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:09,579 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:09,579 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-10 02:58:09,579 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224120576] [2022-02-10 02:58:09,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:09,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:58:09,579 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:09,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:58:09,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:58:09,580 INFO L87 Difference]: Start difference. First operand 17351 states and 57276 transitions. Second operand has 40 states, 40 states have (on average 1.475) internal successors, (59), 39 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:10,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:10,638 INFO L93 Difference]: Finished difference Result 17590 states and 57529 transitions. [2022-02-10 02:58:10,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 02:58:10,639 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.475) internal successors, (59), 39 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:10,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:10,678 INFO L225 Difference]: With dead ends: 17590 [2022-02-10 02:58:10,679 INFO L226 Difference]: Without dead ends: 17578 [2022-02-10 02:58:10,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=149, Invalid=1831, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:58:10,679 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 193 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 2365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:10,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 1635 Invalid, 2365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:58:10,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17578 states. [2022-02-10 02:58:10,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17578 to 17339. [2022-02-10 02:58:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17339 states, 17338 states have (on average 3.300842080978198) internal successors, (57230), 17338 states have internal predecessors, (57230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17339 states to 17339 states and 57230 transitions. [2022-02-10 02:58:11,071 INFO L78 Accepts]: Start accepts. Automaton has 17339 states and 57230 transitions. Word has length 27 [2022-02-10 02:58:11,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:11,071 INFO L470 AbstractCegarLoop]: Abstraction has 17339 states and 57230 transitions. [2022-02-10 02:58:11,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.475) internal successors, (59), 39 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:11,072 INFO L276 IsEmpty]: Start isEmpty. Operand 17339 states and 57230 transitions. [2022-02-10 02:58:11,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:11,111 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:11,111 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:11,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (417)] Forceful destruction successful, exit code 0 [2022-02-10 02:58:11,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 417 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable420 [2022-02-10 02:58:11,334 INFO L402 AbstractCegarLoop]: === Iteration 422 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:11,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:11,334 INFO L85 PathProgramCache]: Analyzing trace with hash -101893017, now seen corresponding path program 416 times [2022-02-10 02:58:11,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:11,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809286172] [2022-02-10 02:58:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:11,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:11,792 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:11,792 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:11,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809286172] [2022-02-10 02:58:11,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809286172] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:11,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201206672] [2022-02-10 02:58:11,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:58:11,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:11,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:11,794 INFO L229 MonitoredProcess]: Starting monitored process 418 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:11,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (418)] Waiting until timeout for monitored process [2022-02-10 02:58:11,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:58:11,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:11,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:11,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:12,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:13,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201206672] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:13,490 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:13,490 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-10 02:58:13,490 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222205127] [2022-02-10 02:58:13,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:13,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 02:58:13,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:13,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 02:58:13,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:58:13,491 INFO L87 Difference]: Start difference. First operand 17339 states and 57230 transitions. Second operand has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 38 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:14,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:14,526 INFO L93 Difference]: Finished difference Result 17589 states and 57494 transitions. [2022-02-10 02:58:14,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:58:14,526 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 38 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:14,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:14,564 INFO L225 Difference]: With dead ends: 17589 [2022-02-10 02:58:14,564 INFO L226 Difference]: Without dead ends: 17576 [2022-02-10 02:58:14,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=150, Invalid=1830, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:58:14,565 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 233 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 2221 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:14,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 1447 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2221 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:58:14,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17576 states. [2022-02-10 02:58:14,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17576 to 17327. [2022-02-10 02:58:14,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17327 states, 17326 states have (on average 3.3005887106083343) internal successors, (57186), 17326 states have internal predecessors, (57186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:14,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17327 states to 17327 states and 57186 transitions. [2022-02-10 02:58:14,899 INFO L78 Accepts]: Start accepts. Automaton has 17327 states and 57186 transitions. Word has length 27 [2022-02-10 02:58:14,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:14,899 INFO L470 AbstractCegarLoop]: Abstraction has 17327 states and 57186 transitions. [2022-02-10 02:58:14,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 38 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:14,899 INFO L276 IsEmpty]: Start isEmpty. Operand 17327 states and 57186 transitions. [2022-02-10 02:58:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:14,925 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:14,925 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:14,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (418)] Ended with exit code 0 [2022-02-10 02:58:15,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 418 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable421 [2022-02-10 02:58:15,125 INFO L402 AbstractCegarLoop]: === Iteration 423 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:15,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:15,126 INFO L85 PathProgramCache]: Analyzing trace with hash -608239283, now seen corresponding path program 417 times [2022-02-10 02:58:15,126 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:15,126 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731234804] [2022-02-10 02:58:15,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:15,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:15,371 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:15,371 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:15,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731234804] [2022-02-10 02:58:15,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731234804] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:15,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140528445] [2022-02-10 02:58:15,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:58:15,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:15,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:15,372 INFO L229 MonitoredProcess]: Starting monitored process 419 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:15,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (419)] Waiting until timeout for monitored process [2022-02-10 02:58:15,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:58:15,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:15,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:15,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:15,699 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:15,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:16,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140528445] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:16,217 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:16,217 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 37 [2022-02-10 02:58:16,217 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44616305] [2022-02-10 02:58:16,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:16,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 02:58:16,218 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:16,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 02:58:16,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1300, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:58:16,218 INFO L87 Difference]: Start difference. First operand 17327 states and 57186 transitions. Second operand has 38 states, 38 states have (on average 1.5) internal successors, (57), 37 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:17,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:17,282 INFO L93 Difference]: Finished difference Result 17590 states and 57463 transitions. [2022-02-10 02:58:17,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 02:58:17,283 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5) internal successors, (57), 37 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:17,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:17,322 INFO L225 Difference]: With dead ends: 17590 [2022-02-10 02:58:17,322 INFO L226 Difference]: Without dead ends: 17576 [2022-02-10 02:58:17,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=151, Invalid=1829, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:58:17,322 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 231 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:17,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 1311 Invalid, 2141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2121 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:58:17,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17576 states. [2022-02-10 02:58:17,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17576 to 17315. [2022-02-10 02:58:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17315 states, 17314 states have (on average 3.3004505024835393) internal successors, (57144), 17314 states have internal predecessors, (57144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17315 states to 17315 states and 57144 transitions. [2022-02-10 02:58:17,740 INFO L78 Accepts]: Start accepts. Automaton has 17315 states and 57144 transitions. Word has length 27 [2022-02-10 02:58:17,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:17,740 INFO L470 AbstractCegarLoop]: Abstraction has 17315 states and 57144 transitions. [2022-02-10 02:58:17,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5) internal successors, (57), 37 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:17,740 INFO L276 IsEmpty]: Start isEmpty. Operand 17315 states and 57144 transitions. [2022-02-10 02:58:17,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:17,768 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:17,768 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:17,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (419)] Ended with exit code 0 [2022-02-10 02:58:17,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 419 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable422 [2022-02-10 02:58:17,968 INFO L402 AbstractCegarLoop]: === Iteration 424 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:17,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:17,969 INFO L85 PathProgramCache]: Analyzing trace with hash 874895655, now seen corresponding path program 418 times [2022-02-10 02:58:17,969 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:17,969 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152446574] [2022-02-10 02:58:17,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:17,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:18,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:18,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152446574] [2022-02-10 02:58:18,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152446574] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:18,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34217543] [2022-02-10 02:58:18,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:58:18,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:18,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:18,209 INFO L229 MonitoredProcess]: Starting monitored process 420 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:18,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (420)] Waiting until timeout for monitored process [2022-02-10 02:58:18,239 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:58:18,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:18,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:18,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:18,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:19,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34217543] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:19,019 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:19,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2022-02-10 02:58:19,019 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011790737] [2022-02-10 02:58:19,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:19,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:58:19,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:19,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:58:19,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:58:19,020 INFO L87 Difference]: Start difference. First operand 17315 states and 57144 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:20,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:20,186 INFO L93 Difference]: Finished difference Result 17593 states and 57436 transitions. [2022-02-10 02:58:20,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 02:58:20,187 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:20,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:20,228 INFO L225 Difference]: With dead ends: 17593 [2022-02-10 02:58:20,228 INFO L226 Difference]: Without dead ends: 17578 [2022-02-10 02:58:20,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=152, Invalid=1828, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:58:20,229 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 206 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 2407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:20,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 1406 Invalid, 2407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 02:58:20,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17578 states. [2022-02-10 02:58:20,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17578 to 17303. [2022-02-10 02:58:20,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17303 states, 17302 states have (on average 3.30042769622009) internal successors, (57104), 17302 states have internal predecessors, (57104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17303 states to 17303 states and 57104 transitions. [2022-02-10 02:58:20,606 INFO L78 Accepts]: Start accepts. Automaton has 17303 states and 57104 transitions. Word has length 27 [2022-02-10 02:58:20,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:20,606 INFO L470 AbstractCegarLoop]: Abstraction has 17303 states and 57104 transitions. [2022-02-10 02:58:20,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:20,606 INFO L276 IsEmpty]: Start isEmpty. Operand 17303 states and 57104 transitions. [2022-02-10 02:58:20,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:20,634 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:20,634 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:20,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (420)] Ended with exit code 0 [2022-02-10 02:58:20,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 420 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable423 [2022-02-10 02:58:20,835 INFO L402 AbstractCegarLoop]: === Iteration 425 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:20,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:20,835 INFO L85 PathProgramCache]: Analyzing trace with hash -392561523, now seen corresponding path program 419 times [2022-02-10 02:58:20,835 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:20,835 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879036699] [2022-02-10 02:58:20,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:20,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:21,173 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:21,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879036699] [2022-02-10 02:58:21,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879036699] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:21,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316600380] [2022-02-10 02:58:21,174 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:58:21,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:21,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:21,175 INFO L229 MonitoredProcess]: Starting monitored process 421 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:21,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (421)] Waiting until timeout for monitored process [2022-02-10 02:58:21,203 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:58:21,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:21,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:21,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:21,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:22,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316600380] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:22,011 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:22,011 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2022-02-10 02:58:22,011 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66020779] [2022-02-10 02:58:22,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:22,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:58:22,011 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:22,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:58:22,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1164, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:58:22,012 INFO L87 Difference]: Start difference. First operand 17303 states and 57104 transitions. Second operand has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:23,222 INFO L93 Difference]: Finished difference Result 17598 states and 57413 transitions. [2022-02-10 02:58:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 02:58:23,222 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:23,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:23,264 INFO L225 Difference]: With dead ends: 17598 [2022-02-10 02:58:23,264 INFO L226 Difference]: Without dead ends: 17582 [2022-02-10 02:58:23,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=153, Invalid=1827, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:58:23,265 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 233 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:23,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 1393 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2490 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 02:58:23,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17582 states. [2022-02-10 02:58:23,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17582 to 17291. [2022-02-10 02:58:23,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17291 states, 17290 states have (on average 3.3005205320994793) internal successors, (57066), 17290 states have internal predecessors, (57066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:23,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17291 states to 17291 states and 57066 transitions. [2022-02-10 02:58:23,641 INFO L78 Accepts]: Start accepts. Automaton has 17291 states and 57066 transitions. Word has length 27 [2022-02-10 02:58:23,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:23,641 INFO L470 AbstractCegarLoop]: Abstraction has 17291 states and 57066 transitions. [2022-02-10 02:58:23,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:23,641 INFO L276 IsEmpty]: Start isEmpty. Operand 17291 states and 57066 transitions. [2022-02-10 02:58:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:23,668 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:23,668 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:23,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (421)] Ended with exit code 0 [2022-02-10 02:58:23,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424,421 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:23,869 INFO L402 AbstractCegarLoop]: === Iteration 426 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:23,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:23,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1029028377, now seen corresponding path program 420 times [2022-02-10 02:58:23,870 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:23,870 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843349055] [2022-02-10 02:58:23,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:23,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:24,212 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:24,212 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843349055] [2022-02-10 02:58:24,212 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843349055] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:24,212 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172693192] [2022-02-10 02:58:24,212 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:58:24,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:24,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:24,214 INFO L229 MonitoredProcess]: Starting monitored process 422 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:24,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (422)] Waiting until timeout for monitored process [2022-02-10 02:58:24,248 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:58:24,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:24,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:24,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:24,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:25,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172693192] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:25,006 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:25,006 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2022-02-10 02:58:25,006 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276004008] [2022-02-10 02:58:25,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:25,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:58:25,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:25,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:58:25,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1099, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:58:25,007 INFO L87 Difference]: Start difference. First operand 17291 states and 57066 transitions. Second operand has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:27,147 INFO L93 Difference]: Finished difference Result 17507 states and 57292 transitions. [2022-02-10 02:58:27,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 02:58:27,147 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:27,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:27,212 INFO L225 Difference]: With dead ends: 17507 [2022-02-10 02:58:27,212 INFO L226 Difference]: Without dead ends: 17490 [2022-02-10 02:58:27,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=154, Invalid=1826, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:58:27,212 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 159 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:27,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 1328 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-10 02:58:27,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17490 states. [2022-02-10 02:58:27,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17490 to 17275. [2022-02-10 02:58:27,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17275 states, 17274 states have (on average 3.3013199027440083) internal successors, (57027), 17274 states have internal predecessors, (57027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17275 states to 17275 states and 57027 transitions. [2022-02-10 02:58:27,663 INFO L78 Accepts]: Start accepts. Automaton has 17275 states and 57027 transitions. Word has length 27 [2022-02-10 02:58:27,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:27,663 INFO L470 AbstractCegarLoop]: Abstraction has 17275 states and 57027 transitions. [2022-02-10 02:58:27,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:27,664 INFO L276 IsEmpty]: Start isEmpty. Operand 17275 states and 57027 transitions. [2022-02-10 02:58:27,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:27,697 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:27,697 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:27,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (422)] Forceful destruction successful, exit code 0 [2022-02-10 02:58:27,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 422 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable425 [2022-02-10 02:58:27,919 INFO L402 AbstractCegarLoop]: === Iteration 427 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:27,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:27,919 INFO L85 PathProgramCache]: Analyzing trace with hash 715335629, now seen corresponding path program 421 times [2022-02-10 02:58:27,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:27,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749694249] [2022-02-10 02:58:27,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:27,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:28,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:28,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749694249] [2022-02-10 02:58:28,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749694249] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:28,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797654256] [2022-02-10 02:58:28,260 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:58:28,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:28,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:28,261 INFO L229 MonitoredProcess]: Starting monitored process 423 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:28,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (423)] Waiting until timeout for monitored process [2022-02-10 02:58:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:28,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:28,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:28,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:29,263 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:29,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797654256] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:29,263 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:29,263 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 33 [2022-02-10 02:58:29,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354406970] [2022-02-10 02:58:29,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:29,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:58:29,264 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:29,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:58:29,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1036, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:58:29,264 INFO L87 Difference]: Start difference. First operand 17275 states and 57027 transitions. Second operand has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:30,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:30,382 INFO L93 Difference]: Finished difference Result 17448 states and 57205 transitions. [2022-02-10 02:58:30,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 02:58:30,382 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:30,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:30,423 INFO L225 Difference]: With dead ends: 17448 [2022-02-10 02:58:30,423 INFO L226 Difference]: Without dead ends: 17443 [2022-02-10 02:58:30,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=132, Invalid=1590, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 02:58:30,423 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 180 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:30,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 1005 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:58:30,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17443 states. [2022-02-10 02:58:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17443 to 17282. [2022-02-10 02:58:30,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17282 states, 17281 states have (on average 3.3003877090446156) internal successors, (57034), 17281 states have internal predecessors, (57034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:30,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17282 states to 17282 states and 57034 transitions. [2022-02-10 02:58:30,915 INFO L78 Accepts]: Start accepts. Automaton has 17282 states and 57034 transitions. Word has length 27 [2022-02-10 02:58:30,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:30,915 INFO L470 AbstractCegarLoop]: Abstraction has 17282 states and 57034 transitions. [2022-02-10 02:58:30,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:30,915 INFO L276 IsEmpty]: Start isEmpty. Operand 17282 states and 57034 transitions. [2022-02-10 02:58:30,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:30,943 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:30,943 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:30,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (423)] Ended with exit code 0 [2022-02-10 02:58:31,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 423 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable426 [2022-02-10 02:58:31,144 INFO L402 AbstractCegarLoop]: === Iteration 428 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:31,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:31,145 INFO L85 PathProgramCache]: Analyzing trace with hash -315611021, now seen corresponding path program 422 times [2022-02-10 02:58:31,145 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:31,145 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291626189] [2022-02-10 02:58:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:31,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:31,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:31,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291626189] [2022-02-10 02:58:31,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291626189] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:31,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309148957] [2022-02-10 02:58:31,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:58:31,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:31,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:31,440 INFO L229 MonitoredProcess]: Starting monitored process 424 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:31,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (424)] Waiting until timeout for monitored process [2022-02-10 02:58:31,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:58:31,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:31,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:31,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:31,922 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:31,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:32,514 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:32,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309148957] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:32,514 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:32,514 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 18] total 40 [2022-02-10 02:58:32,514 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043312291] [2022-02-10 02:58:32,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:32,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:58:32,515 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:32,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:58:32,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:58:32,516 INFO L87 Difference]: Start difference. First operand 17282 states and 57034 transitions. Second operand has 41 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 40 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:33,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:33,309 INFO L93 Difference]: Finished difference Result 17469 states and 57354 transitions. [2022-02-10 02:58:33,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:58:33,310 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 40 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:33,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:33,361 INFO L225 Difference]: With dead ends: 17469 [2022-02-10 02:58:33,361 INFO L226 Difference]: Without dead ends: 17463 [2022-02-10 02:58:33,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 21 SyntacticMatches, 10 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=1748, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:58:33,362 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 181 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:33,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 792 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:58:33,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17463 states. [2022-02-10 02:58:33,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17463 to 17295. [2022-02-10 02:58:33,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17295 states, 17294 states have (on average 3.300508846998959) internal successors, (57079), 17294 states have internal predecessors, (57079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:33,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17295 states to 17295 states and 57079 transitions. [2022-02-10 02:58:33,746 INFO L78 Accepts]: Start accepts. Automaton has 17295 states and 57079 transitions. Word has length 27 [2022-02-10 02:58:33,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:33,746 INFO L470 AbstractCegarLoop]: Abstraction has 17295 states and 57079 transitions. [2022-02-10 02:58:33,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 40 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:33,746 INFO L276 IsEmpty]: Start isEmpty. Operand 17295 states and 57079 transitions. [2022-02-10 02:58:33,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:33,838 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:33,838 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:33,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (424)] Ended with exit code 0 [2022-02-10 02:58:34,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable427,424 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:34,039 INFO L402 AbstractCegarLoop]: === Iteration 429 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:34,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:34,039 INFO L85 PathProgramCache]: Analyzing trace with hash 528397359, now seen corresponding path program 423 times [2022-02-10 02:58:34,039 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:34,039 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887105056] [2022-02-10 02:58:34,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:34,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:34,266 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:34,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887105056] [2022-02-10 02:58:34,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887105056] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:34,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101319236] [2022-02-10 02:58:34,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:58:34,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:34,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:34,268 INFO L229 MonitoredProcess]: Starting monitored process 425 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:34,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (425)] Waiting until timeout for monitored process [2022-02-10 02:58:34,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:58:34,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:34,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:34,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:34,665 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:34,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:35,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101319236] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:35,221 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:35,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 18] total 40 [2022-02-10 02:58:35,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275116041] [2022-02-10 02:58:35,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:35,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:58:35,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:35,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:58:35,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:58:35,222 INFO L87 Difference]: Start difference. First operand 17295 states and 57079 transitions. Second operand has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:35,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:35,862 INFO L93 Difference]: Finished difference Result 17458 states and 57342 transitions. [2022-02-10 02:58:35,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:58:35,862 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:35,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:35,911 INFO L225 Difference]: With dead ends: 17458 [2022-02-10 02:58:35,911 INFO L226 Difference]: Without dead ends: 17453 [2022-02-10 02:58:35,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=1672, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:58:35,912 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 190 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:35,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 821 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:58:35,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17453 states. [2022-02-10 02:58:36,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17453 to 17295. [2022-02-10 02:58:36,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17295 states, 17294 states have (on average 3.300508846998959) internal successors, (57079), 17294 states have internal predecessors, (57079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:36,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17295 states to 17295 states and 57079 transitions. [2022-02-10 02:58:36,369 INFO L78 Accepts]: Start accepts. Automaton has 17295 states and 57079 transitions. Word has length 27 [2022-02-10 02:58:36,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:36,369 INFO L470 AbstractCegarLoop]: Abstraction has 17295 states and 57079 transitions. [2022-02-10 02:58:36,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:36,369 INFO L276 IsEmpty]: Start isEmpty. Operand 17295 states and 57079 transitions. [2022-02-10 02:58:36,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:36,400 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:36,400 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:36,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (425)] Ended with exit code 0 [2022-02-10 02:58:36,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable428,425 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:36,601 INFO L402 AbstractCegarLoop]: === Iteration 430 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:36,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:36,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1984891119, now seen corresponding path program 424 times [2022-02-10 02:58:36,601 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:36,601 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959427470] [2022-02-10 02:58:36,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:36,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:36,874 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:36,874 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:36,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959427470] [2022-02-10 02:58:36,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959427470] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:36,875 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311090266] [2022-02-10 02:58:36,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:58:36,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:36,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:36,876 INFO L229 MonitoredProcess]: Starting monitored process 426 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:36,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (426)] Waiting until timeout for monitored process [2022-02-10 02:58:36,909 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:58:36,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:36,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:36,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:37,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:38,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311090266] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:38,066 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:38,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 18] total 39 [2022-02-10 02:58:38,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738735673] [2022-02-10 02:58:38,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:38,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:58:38,067 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:38,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:58:38,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:58:38,068 INFO L87 Difference]: Start difference. First operand 17295 states and 57079 transitions. Second operand has 40 states, 40 states have (on average 1.6) internal successors, (64), 39 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:38,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:38,813 INFO L93 Difference]: Finished difference Result 17419 states and 57258 transitions. [2022-02-10 02:58:38,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:58:38,813 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 39 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:38,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:38,862 INFO L225 Difference]: With dead ends: 17419 [2022-02-10 02:58:38,862 INFO L226 Difference]: Without dead ends: 17415 [2022-02-10 02:58:38,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 20 SyntacticMatches, 12 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=133, Invalid=1673, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:58:38,862 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 155 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:38,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 752 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:58:38,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17415 states. [2022-02-10 02:58:39,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17415 to 17295. [2022-02-10 02:58:39,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17295 states, 17294 states have (on average 3.300508846998959) internal successors, (57079), 17294 states have internal predecessors, (57079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:39,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17295 states to 17295 states and 57079 transitions. [2022-02-10 02:58:39,464 INFO L78 Accepts]: Start accepts. Automaton has 17295 states and 57079 transitions. Word has length 27 [2022-02-10 02:58:39,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:39,464 INFO L470 AbstractCegarLoop]: Abstraction has 17295 states and 57079 transitions. [2022-02-10 02:58:39,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 39 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:39,464 INFO L276 IsEmpty]: Start isEmpty. Operand 17295 states and 57079 transitions. [2022-02-10 02:58:39,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:39,492 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:39,492 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:39,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (426)] Ended with exit code 0 [2022-02-10 02:58:39,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 426 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable429 [2022-02-10 02:58:39,692 INFO L402 AbstractCegarLoop]: === Iteration 431 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:39,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:39,693 INFO L85 PathProgramCache]: Analyzing trace with hash 2075030763, now seen corresponding path program 425 times [2022-02-10 02:58:39,693 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:39,693 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573287784] [2022-02-10 02:58:39,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:39,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:40,079 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:40,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573287784] [2022-02-10 02:58:40,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573287784] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:40,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652537787] [2022-02-10 02:58:40,080 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:58:40,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:40,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:40,081 INFO L229 MonitoredProcess]: Starting monitored process 427 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:40,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (427)] Waiting until timeout for monitored process [2022-02-10 02:58:40,135 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:58:40,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:40,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:40,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:40,702 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:40,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:41,259 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:41,259 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652537787] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:41,259 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:41,259 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 18] total 41 [2022-02-10 02:58:41,259 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813991525] [2022-02-10 02:58:41,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:41,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-10 02:58:41,260 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:41,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-10 02:58:41,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1596, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 02:58:41,260 INFO L87 Difference]: Start difference. First operand 17295 states and 57079 transitions. Second operand has 42 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 41 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:41,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:41,954 INFO L93 Difference]: Finished difference Result 17530 states and 57515 transitions. [2022-02-10 02:58:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:58:41,954 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 41 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:41,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:41,998 INFO L225 Difference]: With dead ends: 17530 [2022-02-10 02:58:41,998 INFO L226 Difference]: Without dead ends: 17524 [2022-02-10 02:58:41,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 22 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=152, Invalid=1828, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:58:41,999 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 205 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:41,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 886 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:58:42,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17524 states. [2022-02-10 02:58:42,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17524 to 17314. [2022-02-10 02:58:42,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17314 states, 17313 states have (on average 3.300814416912147) internal successors, (57147), 17313 states have internal predecessors, (57147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17314 states to 17314 states and 57147 transitions. [2022-02-10 02:58:42,417 INFO L78 Accepts]: Start accepts. Automaton has 17314 states and 57147 transitions. Word has length 27 [2022-02-10 02:58:42,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:42,417 INFO L470 AbstractCegarLoop]: Abstraction has 17314 states and 57147 transitions. [2022-02-10 02:58:42,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 41 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:42,417 INFO L276 IsEmpty]: Start isEmpty. Operand 17314 states and 57147 transitions. [2022-02-10 02:58:42,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:42,448 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:42,448 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:42,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (427)] Forceful destruction successful, exit code 0 [2022-02-10 02:58:42,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 427 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable430 [2022-02-10 02:58:42,658 INFO L402 AbstractCegarLoop]: === Iteration 432 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:42,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:42,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1375928153, now seen corresponding path program 426 times [2022-02-10 02:58:42,658 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:42,658 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644924367] [2022-02-10 02:58:42,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:42,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:42,868 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:42,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644924367] [2022-02-10 02:58:42,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644924367] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:42,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512886431] [2022-02-10 02:58:42,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:58:42,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:42,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:42,869 INFO L229 MonitoredProcess]: Starting monitored process 428 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:42,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (428)] Waiting until timeout for monitored process [2022-02-10 02:58:42,898 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:58:42,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:42,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:42,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:43,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:43,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512886431] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:43,799 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:43,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 18] total 40 [2022-02-10 02:58:43,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440965597] [2022-02-10 02:58:43,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:43,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:58:43,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:43,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:58:43,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:58:43,800 INFO L87 Difference]: Start difference. First operand 17314 states and 57147 transitions. Second operand has 41 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 40 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:44,398 INFO L93 Difference]: Finished difference Result 17518 states and 57501 transitions. [2022-02-10 02:58:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:58:44,398 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 40 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:44,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:44,434 INFO L225 Difference]: With dead ends: 17518 [2022-02-10 02:58:44,435 INFO L226 Difference]: Without dead ends: 17513 [2022-02-10 02:58:44,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=1672, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:58:44,435 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 182 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:44,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 790 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:58:44,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17513 states. [2022-02-10 02:58:44,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17513 to 17314. [2022-02-10 02:58:44,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17314 states, 17313 states have (on average 3.300814416912147) internal successors, (57147), 17313 states have internal predecessors, (57147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:44,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17314 states to 17314 states and 57147 transitions. [2022-02-10 02:58:44,816 INFO L78 Accepts]: Start accepts. Automaton has 17314 states and 57147 transitions. Word has length 27 [2022-02-10 02:58:44,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:44,816 INFO L470 AbstractCegarLoop]: Abstraction has 17314 states and 57147 transitions. [2022-02-10 02:58:44,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 40 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:44,816 INFO L276 IsEmpty]: Start isEmpty. Operand 17314 states and 57147 transitions. [2022-02-10 02:58:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:44,844 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:44,844 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:44,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (428)] Ended with exit code 0 [2022-02-10 02:58:45,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 428 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable431 [2022-02-10 02:58:45,045 INFO L402 AbstractCegarLoop]: === Iteration 433 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:45,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:45,045 INFO L85 PathProgramCache]: Analyzing trace with hash 80565607, now seen corresponding path program 427 times [2022-02-10 02:58:45,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:45,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064673087] [2022-02-10 02:58:45,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:45,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:45,299 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:45,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064673087] [2022-02-10 02:58:45,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064673087] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:45,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39970978] [2022-02-10 02:58:45,300 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:58:45,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:45,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:45,301 INFO L229 MonitoredProcess]: Starting monitored process 429 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:45,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (429)] Waiting until timeout for monitored process [2022-02-10 02:58:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:45,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:45,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:45,760 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:45,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:46,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39970978] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:46,316 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:46,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 18] total 39 [2022-02-10 02:58:46,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692813120] [2022-02-10 02:58:46,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:46,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:58:46,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:46,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:58:46,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:58:46,317 INFO L87 Difference]: Start difference. First operand 17314 states and 57147 transitions. Second operand has 40 states, 40 states have (on average 1.575) internal successors, (63), 39 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:47,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:47,022 INFO L93 Difference]: Finished difference Result 17484 states and 57425 transitions. [2022-02-10 02:58:47,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:58:47,022 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.575) internal successors, (63), 39 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:47,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:47,066 INFO L225 Difference]: With dead ends: 17484 [2022-02-10 02:58:47,066 INFO L226 Difference]: Without dead ends: 17477 [2022-02-10 02:58:47,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 21 SyntacticMatches, 11 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:58:47,066 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 130 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:47,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 852 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:58:47,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17477 states. [2022-02-10 02:58:47,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17477 to 17314. [2022-02-10 02:58:47,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17314 states, 17313 states have (on average 3.300756656847456) internal successors, (57146), 17313 states have internal predecessors, (57146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17314 states to 17314 states and 57146 transitions. [2022-02-10 02:58:47,465 INFO L78 Accepts]: Start accepts. Automaton has 17314 states and 57146 transitions. Word has length 27 [2022-02-10 02:58:47,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:47,466 INFO L470 AbstractCegarLoop]: Abstraction has 17314 states and 57146 transitions. [2022-02-10 02:58:47,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.575) internal successors, (63), 39 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:47,466 INFO L276 IsEmpty]: Start isEmpty. Operand 17314 states and 57146 transitions. [2022-02-10 02:58:47,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:47,494 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:47,494 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:47,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (429)] Ended with exit code 0 [2022-02-10 02:58:47,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable432,429 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:47,695 INFO L402 AbstractCegarLoop]: === Iteration 434 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:47,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:47,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1618312085, now seen corresponding path program 428 times [2022-02-10 02:58:47,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:47,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847114360] [2022-02-10 02:58:47,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:47,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:48,000 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:48,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847114360] [2022-02-10 02:58:48,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847114360] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:48,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782282768] [2022-02-10 02:58:48,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:58:48,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:48,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:48,004 INFO L229 MonitoredProcess]: Starting monitored process 430 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:48,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (430)] Waiting until timeout for monitored process [2022-02-10 02:58:48,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:58:48,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:48,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:48,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:48,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:49,118 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:49,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782282768] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:49,118 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:49,118 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 18] total 38 [2022-02-10 02:58:49,118 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268611929] [2022-02-10 02:58:49,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:49,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 02:58:49,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:49,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 02:58:49,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:58:49,119 INFO L87 Difference]: Start difference. First operand 17314 states and 57146 transitions. Second operand has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:49,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:49,880 INFO L93 Difference]: Finished difference Result 17437 states and 57314 transitions. [2022-02-10 02:58:49,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:58:49,881 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:49,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:49,918 INFO L225 Difference]: With dead ends: 17437 [2022-02-10 02:58:49,919 INFO L226 Difference]: Without dead ends: 17433 [2022-02-10 02:58:49,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 11 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=1672, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:58:49,919 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 143 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:49,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 695 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:58:49,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17433 states. [2022-02-10 02:58:50,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17433 to 17314. [2022-02-10 02:58:50,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17314 states, 17313 states have (on average 3.300756656847456) internal successors, (57146), 17313 states have internal predecessors, (57146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:50,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17314 states to 17314 states and 57146 transitions. [2022-02-10 02:58:50,384 INFO L78 Accepts]: Start accepts. Automaton has 17314 states and 57146 transitions. Word has length 27 [2022-02-10 02:58:50,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:50,384 INFO L470 AbstractCegarLoop]: Abstraction has 17314 states and 57146 transitions. [2022-02-10 02:58:50,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:50,384 INFO L276 IsEmpty]: Start isEmpty. Operand 17314 states and 57146 transitions. [2022-02-10 02:58:50,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:50,416 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:50,416 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:50,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (430)] Forceful destruction successful, exit code 0 [2022-02-10 02:58:50,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 430 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable433 [2022-02-10 02:58:50,640 INFO L402 AbstractCegarLoop]: === Iteration 435 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:50,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:50,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1408659093, now seen corresponding path program 429 times [2022-02-10 02:58:50,641 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:50,641 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489564623] [2022-02-10 02:58:50,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:50,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:50,931 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:50,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489564623] [2022-02-10 02:58:50,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489564623] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:50,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922931367] [2022-02-10 02:58:50,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:58:50,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:50,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:50,933 INFO L229 MonitoredProcess]: Starting monitored process 431 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:50,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (431)] Waiting until timeout for monitored process [2022-02-10 02:58:50,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 02:58:50,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:50,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:50,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:51,420 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:58:51,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:51,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922931367] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:51,956 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:51,956 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 18] total 38 [2022-02-10 02:58:51,956 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119674970] [2022-02-10 02:58:51,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:51,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 02:58:51,956 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:51,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 02:58:51,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1369, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:58:51,957 INFO L87 Difference]: Start difference. First operand 17314 states and 57146 transitions. Second operand has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:52,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:52,599 INFO L93 Difference]: Finished difference Result 17398 states and 57234 transitions. [2022-02-10 02:58:52,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:58:52,599 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:52,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:52,653 INFO L225 Difference]: With dead ends: 17398 [2022-02-10 02:58:52,654 INFO L226 Difference]: Without dead ends: 17394 [2022-02-10 02:58:52,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 11 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=146, Invalid=1660, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:58:52,654 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 160 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:52,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 606 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:58:52,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17394 states. [2022-02-10 02:58:52,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17394 to 17308. [2022-02-10 02:58:53,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17308 states, 17307 states have (on average 3.3008609233258217) internal successors, (57128), 17307 states have internal predecessors, (57128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:53,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17308 states to 17308 states and 57128 transitions. [2022-02-10 02:58:53,086 INFO L78 Accepts]: Start accepts. Automaton has 17308 states and 57128 transitions. Word has length 27 [2022-02-10 02:58:53,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:53,086 INFO L470 AbstractCegarLoop]: Abstraction has 17308 states and 57128 transitions. [2022-02-10 02:58:53,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:53,086 INFO L276 IsEmpty]: Start isEmpty. Operand 17308 states and 57128 transitions. [2022-02-10 02:58:53,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:53,121 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:53,121 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:53,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (431)] Forceful destruction successful, exit code 0 [2022-02-10 02:58:53,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable434,431 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:53,344 INFO L402 AbstractCegarLoop]: === Iteration 436 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:53,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:53,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1124485261, now seen corresponding path program 430 times [2022-02-10 02:58:53,344 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:53,344 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777370554] [2022-02-10 02:58:53,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:53,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:53,565 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:53,565 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:53,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777370554] [2022-02-10 02:58:53,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777370554] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:53,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641816839] [2022-02-10 02:58:53,566 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:58:53,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:53,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:53,567 INFO L229 MonitoredProcess]: Starting monitored process 432 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:53,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (432)] Waiting until timeout for monitored process [2022-02-10 02:58:53,594 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:58:53,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:53,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:53,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:54,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:54,686 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641816839] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:54,686 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:54,686 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 18] total 41 [2022-02-10 02:58:54,687 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084551261] [2022-02-10 02:58:54,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:54,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-10 02:58:54,687 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:54,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-10 02:58:54,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1596, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 02:58:54,687 INFO L87 Difference]: Start difference. First operand 17308 states and 57128 transitions. Second operand has 42 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 41 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:55,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:55,332 INFO L93 Difference]: Finished difference Result 17610 states and 57714 transitions. [2022-02-10 02:58:55,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:58:55,332 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 41 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:55,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:55,369 INFO L225 Difference]: With dead ends: 17610 [2022-02-10 02:58:55,369 INFO L226 Difference]: Without dead ends: 17604 [2022-02-10 02:58:55,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 22 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=152, Invalid=1828, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:58:55,370 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 184 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:55,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 859 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:58:55,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17604 states. [2022-02-10 02:58:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17604 to 17335. [2022-02-10 02:58:55,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17335 states, 17334 states have (on average 3.301373024114457) internal successors, (57226), 17334 states have internal predecessors, (57226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:55,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17335 states to 17335 states and 57226 transitions. [2022-02-10 02:58:55,800 INFO L78 Accepts]: Start accepts. Automaton has 17335 states and 57226 transitions. Word has length 27 [2022-02-10 02:58:55,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:55,800 INFO L470 AbstractCegarLoop]: Abstraction has 17335 states and 57226 transitions. [2022-02-10 02:58:55,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 41 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:55,800 INFO L276 IsEmpty]: Start isEmpty. Operand 17335 states and 57226 transitions. [2022-02-10 02:58:55,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:55,829 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:55,829 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:55,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (432)] Ended with exit code 0 [2022-02-10 02:58:56,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 432 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable435 [2022-02-10 02:58:56,030 INFO L402 AbstractCegarLoop]: === Iteration 437 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:56,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:56,030 INFO L85 PathProgramCache]: Analyzing trace with hash -280476881, now seen corresponding path program 431 times [2022-02-10 02:58:56,030 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:56,030 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458506214] [2022-02-10 02:58:56,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:56,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:56,261 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:56,261 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:56,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458506214] [2022-02-10 02:58:56,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458506214] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:56,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598752900] [2022-02-10 02:58:56,261 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:58:56,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:56,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:56,262 INFO L229 MonitoredProcess]: Starting monitored process 433 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:56,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (433)] Waiting until timeout for monitored process [2022-02-10 02:58:56,291 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-02-10 02:58:56,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:56,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:56,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:56,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:57,172 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:57,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598752900] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:57,173 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:57,173 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 18] total 40 [2022-02-10 02:58:57,173 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511896902] [2022-02-10 02:58:57,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:57,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:58:57,173 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:57,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:58:57,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:58:57,174 INFO L87 Difference]: Start difference. First operand 17335 states and 57226 transitions. Second operand has 41 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 40 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:57,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:58:57,832 INFO L93 Difference]: Finished difference Result 17598 states and 57699 transitions. [2022-02-10 02:58:57,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:58:57,832 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 40 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:58:57,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:58:57,870 INFO L225 Difference]: With dead ends: 17598 [2022-02-10 02:58:57,870 INFO L226 Difference]: Without dead ends: 17593 [2022-02-10 02:58:57,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=1672, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:58:57,871 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 156 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:58:57,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 908 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:58:57,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17593 states. [2022-02-10 02:58:58,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17593 to 17335. [2022-02-10 02:58:58,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17335 states, 17334 states have (on average 3.301373024114457) internal successors, (57226), 17334 states have internal predecessors, (57226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:58,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17335 states to 17335 states and 57226 transitions. [2022-02-10 02:58:58,287 INFO L78 Accepts]: Start accepts. Automaton has 17335 states and 57226 transitions. Word has length 27 [2022-02-10 02:58:58,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:58:58,287 INFO L470 AbstractCegarLoop]: Abstraction has 17335 states and 57226 transitions. [2022-02-10 02:58:58,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 40 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:58:58,287 INFO L276 IsEmpty]: Start isEmpty. Operand 17335 states and 57226 transitions. [2022-02-10 02:58:58,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:58:58,314 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:58:58,314 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:58:58,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (433)] Ended with exit code 0 [2022-02-10 02:58:58,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 433 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable436 [2022-02-10 02:58:58,515 INFO L402 AbstractCegarLoop]: === Iteration 438 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:58:58,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:58:58,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1176016879, now seen corresponding path program 432 times [2022-02-10 02:58:58,515 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:58:58,515 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143917994] [2022-02-10 02:58:58,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:58:58,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:58:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:58:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:58,802 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:58:58,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143917994] [2022-02-10 02:58:58,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143917994] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:58:58,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045211422] [2022-02-10 02:58:58,802 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:58:58,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:58:58,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:58:58,803 INFO L229 MonitoredProcess]: Starting monitored process 434 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:58:58,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (434)] Waiting until timeout for monitored process [2022-02-10 02:58:58,839 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 02:58:58,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:58:58,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:58:58,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:58:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:59,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:58:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:58:59,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045211422] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:58:59,762 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:58:59,762 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 18] total 39 [2022-02-10 02:58:59,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273267423] [2022-02-10 02:58:59,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:58:59,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:58:59,762 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:58:59,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:58:59,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:58:59,763 INFO L87 Difference]: Start difference. First operand 17335 states and 57226 transitions. Second operand has 40 states, 40 states have (on average 1.55) internal successors, (62), 39 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:00,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:00,390 INFO L93 Difference]: Finished difference Result 17573 states and 57635 transitions. [2022-02-10 02:59:00,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:59:00,390 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.55) internal successors, (62), 39 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:00,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:00,432 INFO L225 Difference]: With dead ends: 17573 [2022-02-10 02:59:00,433 INFO L226 Difference]: Without dead ends: 17566 [2022-02-10 02:59:00,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 10 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:59:00,433 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 198 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:00,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 729 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:59:00,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17566 states. [2022-02-10 02:59:00,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17566 to 17335. [2022-02-10 02:59:00,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17335 states, 17334 states have (on average 3.3013153340256145) internal successors, (57225), 17334 states have internal predecessors, (57225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:00,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17335 states to 17335 states and 57225 transitions. [2022-02-10 02:59:00,795 INFO L78 Accepts]: Start accepts. Automaton has 17335 states and 57225 transitions. Word has length 27 [2022-02-10 02:59:00,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:00,796 INFO L470 AbstractCegarLoop]: Abstraction has 17335 states and 57225 transitions. [2022-02-10 02:59:00,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.55) internal successors, (62), 39 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:00,796 INFO L276 IsEmpty]: Start isEmpty. Operand 17335 states and 57225 transitions. [2022-02-10 02:59:00,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:00,831 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:00,831 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:00,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (434)] Forceful destruction successful, exit code 0 [2022-02-10 02:59:01,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable437,434 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:01,032 INFO L402 AbstractCegarLoop]: === Iteration 439 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:01,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:01,032 INFO L85 PathProgramCache]: Analyzing trace with hash -522860813, now seen corresponding path program 433 times [2022-02-10 02:59:01,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:01,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990678205] [2022-02-10 02:59:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:01,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:01,261 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:01,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:01,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990678205] [2022-02-10 02:59:01,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990678205] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:01,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626161870] [2022-02-10 02:59:01,262 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:59:01,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:01,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:01,263 INFO L229 MonitoredProcess]: Starting monitored process 435 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:01,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (435)] Waiting until timeout for monitored process [2022-02-10 02:59:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:01,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:01,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:01,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:02,231 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:02,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626161870] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:02,231 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:02,231 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 18] total 38 [2022-02-10 02:59:02,231 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757334268] [2022-02-10 02:59:02,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:02,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 02:59:02,232 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:02,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 02:59:02,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:59:02,232 INFO L87 Difference]: Start difference. First operand 17335 states and 57225 transitions. Second operand has 39 states, 39 states have (on average 1.564102564102564) internal successors, (61), 38 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:02,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:02,982 INFO L93 Difference]: Finished difference Result 17520 states and 57510 transitions. [2022-02-10 02:59:02,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:59:02,983 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.564102564102564) internal successors, (61), 38 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:02,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:03,021 INFO L225 Difference]: With dead ends: 17520 [2022-02-10 02:59:03,021 INFO L226 Difference]: Without dead ends: 17512 [2022-02-10 02:59:03,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 10 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=143, Invalid=1749, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:59:03,021 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 162 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:03,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 853 Invalid, 1565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:59:03,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17512 states. [2022-02-10 02:59:03,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17512 to 17335. [2022-02-10 02:59:03,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17335 states, 17334 states have (on average 3.3012576439367716) internal successors, (57224), 17334 states have internal predecessors, (57224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:03,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17335 states to 17335 states and 57224 transitions. [2022-02-10 02:59:03,361 INFO L78 Accepts]: Start accepts. Automaton has 17335 states and 57224 transitions. Word has length 27 [2022-02-10 02:59:03,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:03,361 INFO L470 AbstractCegarLoop]: Abstraction has 17335 states and 57224 transitions. [2022-02-10 02:59:03,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.564102564102564) internal successors, (61), 38 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:03,361 INFO L276 IsEmpty]: Start isEmpty. Operand 17335 states and 57224 transitions. [2022-02-10 02:59:03,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:03,387 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:03,387 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:03,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (435)] Ended with exit code 0 [2022-02-10 02:59:03,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 435 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable438 [2022-02-10 02:59:03,587 INFO L402 AbstractCegarLoop]: === Iteration 440 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:03,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:03,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1648461713, now seen corresponding path program 434 times [2022-02-10 02:59:03,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:03,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811396484] [2022-02-10 02:59:03,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:03,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:03,900 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:03,900 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811396484] [2022-02-10 02:59:03,900 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811396484] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:03,900 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666186140] [2022-02-10 02:59:03,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:59:03,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:03,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:03,903 INFO L229 MonitoredProcess]: Starting monitored process 436 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:03,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (436)] Waiting until timeout for monitored process [2022-02-10 02:59:03,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:59:03,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:03,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:03,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:04,289 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:04,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:04,789 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:04,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666186140] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:04,789 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:04,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 18] total 37 [2022-02-10 02:59:04,790 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149001625] [2022-02-10 02:59:04,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:04,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 02:59:04,790 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:04,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 02:59:04,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1300, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:59:04,790 INFO L87 Difference]: Start difference. First operand 17335 states and 57224 transitions. Second operand has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:05,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:05,491 INFO L93 Difference]: Finished difference Result 17475 states and 57415 transitions. [2022-02-10 02:59:05,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:59:05,491 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:05,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:05,530 INFO L225 Difference]: With dead ends: 17475 [2022-02-10 02:59:05,531 INFO L226 Difference]: Without dead ends: 17471 [2022-02-10 02:59:05,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=135, Invalid=1671, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:59:05,531 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 160 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:05,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 761 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:59:05,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17471 states. [2022-02-10 02:59:05,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17471 to 17335. [2022-02-10 02:59:05,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17335 states, 17334 states have (on average 3.3012576439367716) internal successors, (57224), 17334 states have internal predecessors, (57224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17335 states to 17335 states and 57224 transitions. [2022-02-10 02:59:06,008 INFO L78 Accepts]: Start accepts. Automaton has 17335 states and 57224 transitions. Word has length 27 [2022-02-10 02:59:06,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:06,009 INFO L470 AbstractCegarLoop]: Abstraction has 17335 states and 57224 transitions. [2022-02-10 02:59:06,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:06,009 INFO L276 IsEmpty]: Start isEmpty. Operand 17335 states and 57224 transitions. [2022-02-10 02:59:06,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:06,047 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:06,047 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:06,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (436)] Forceful destruction successful, exit code 0 [2022-02-10 02:59:06,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable439,436 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:06,271 INFO L402 AbstractCegarLoop]: === Iteration 441 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:06,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:06,271 INFO L85 PathProgramCache]: Analyzing trace with hash 795616363, now seen corresponding path program 435 times [2022-02-10 02:59:06,271 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:06,271 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278911551] [2022-02-10 02:59:06,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:06,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:06,493 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:06,494 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:06,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278911551] [2022-02-10 02:59:06,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278911551] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:06,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540404978] [2022-02-10 02:59:06,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:59:06,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:06,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:06,495 INFO L229 MonitoredProcess]: Starting monitored process 437 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:06,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (437)] Waiting until timeout for monitored process [2022-02-10 02:59:06,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 02:59:06,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:06,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:06,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:06,887 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:59:06,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:07,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540404978] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:07,425 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:07,426 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 18] total 38 [2022-02-10 02:59:07,426 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543357789] [2022-02-10 02:59:07,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:07,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 02:59:07,426 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:07,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 02:59:07,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1369, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:59:07,426 INFO L87 Difference]: Start difference. First operand 17335 states and 57224 transitions. Second operand has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:08,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:08,077 INFO L93 Difference]: Finished difference Result 17471 states and 57369 transitions. [2022-02-10 02:59:08,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:59:08,077 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:08,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:08,118 INFO L225 Difference]: With dead ends: 17471 [2022-02-10 02:59:08,118 INFO L226 Difference]: Without dead ends: 17463 [2022-02-10 02:59:08,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 11 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=1658, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:59:08,118 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 190 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:08,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 709 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:59:08,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17463 states. [2022-02-10 02:59:08,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17463 to 17328. [2022-02-10 02:59:08,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17328 states, 17327 states have (on average 3.301090783170774) internal successors, (57198), 17327 states have internal predecessors, (57198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:08,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17328 states to 17328 states and 57198 transitions. [2022-02-10 02:59:08,537 INFO L78 Accepts]: Start accepts. Automaton has 17328 states and 57198 transitions. Word has length 27 [2022-02-10 02:59:08,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:08,537 INFO L470 AbstractCegarLoop]: Abstraction has 17328 states and 57198 transitions. [2022-02-10 02:59:08,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:08,537 INFO L276 IsEmpty]: Start isEmpty. Operand 17328 states and 57198 transitions. [2022-02-10 02:59:08,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:08,572 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:08,572 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:08,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (437)] Forceful destruction successful, exit code 0 [2022-02-10 02:59:08,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable440,437 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:08,791 INFO L402 AbstractCegarLoop]: === Iteration 442 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:08,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:08,792 INFO L85 PathProgramCache]: Analyzing trace with hash 555813743, now seen corresponding path program 436 times [2022-02-10 02:59:08,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:08,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449631322] [2022-02-10 02:59:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:08,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:09,030 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:09,030 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:09,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449631322] [2022-02-10 02:59:09,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449631322] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:09,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924098447] [2022-02-10 02:59:09,030 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:59:09,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:09,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:09,031 INFO L229 MonitoredProcess]: Starting monitored process 438 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:09,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (438)] Waiting until timeout for monitored process [2022-02-10 02:59:09,059 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:59:09,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:09,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:09,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:09,438 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:59:09,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:10,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924098447] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:10,186 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:10,186 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 18] total 37 [2022-02-10 02:59:10,186 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060751374] [2022-02-10 02:59:10,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:10,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 02:59:10,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:10,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 02:59:10,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1298, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:59:10,187 INFO L87 Difference]: Start difference. First operand 17328 states and 57198 transitions. Second operand has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:10,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:10,870 INFO L93 Difference]: Finished difference Result 17422 states and 57297 transitions. [2022-02-10 02:59:10,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:59:10,870 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:10,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:10,910 INFO L225 Difference]: With dead ends: 17422 [2022-02-10 02:59:10,910 INFO L226 Difference]: Without dead ends: 17418 [2022-02-10 02:59:10,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=1659, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:59:10,911 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 137 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:10,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 684 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:59:10,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17418 states. [2022-02-10 02:59:11,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17418 to 17321. [2022-02-10 02:59:11,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17321 states, 17320 states have (on average 3.3012124711316395) internal successors, (57177), 17320 states have internal predecessors, (57177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:11,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17321 states to 17321 states and 57177 transitions. [2022-02-10 02:59:11,323 INFO L78 Accepts]: Start accepts. Automaton has 17321 states and 57177 transitions. Word has length 27 [2022-02-10 02:59:11,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:11,323 INFO L470 AbstractCegarLoop]: Abstraction has 17321 states and 57177 transitions. [2022-02-10 02:59:11,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:11,323 INFO L276 IsEmpty]: Start isEmpty. Operand 17321 states and 57177 transitions. [2022-02-10 02:59:11,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:11,357 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:11,357 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:11,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (438)] Ended with exit code 0 [2022-02-10 02:59:11,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable441,438 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:11,575 INFO L402 AbstractCegarLoop]: === Iteration 443 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:11,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:11,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1525234197, now seen corresponding path program 437 times [2022-02-10 02:59:11,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:11,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958247806] [2022-02-10 02:59:11,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:11,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:11,851 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:11,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958247806] [2022-02-10 02:59:11,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958247806] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:11,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016282896] [2022-02-10 02:59:11,851 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:59:11,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:11,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:11,856 INFO L229 MonitoredProcess]: Starting monitored process 439 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:11,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (439)] Waiting until timeout for monitored process [2022-02-10 02:59:11,891 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:59:11,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:11,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:11,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:12,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:13,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016282896] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:13,109 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:13,109 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 18] total 41 [2022-02-10 02:59:13,109 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293244877] [2022-02-10 02:59:13,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:13,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-10 02:59:13,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:13,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-10 02:59:13,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1596, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 02:59:13,110 INFO L87 Difference]: Start difference. First operand 17321 states and 57177 transitions. Second operand has 42 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 41 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:13,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:13,747 INFO L93 Difference]: Finished difference Result 17683 states and 57897 transitions. [2022-02-10 02:59:13,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:59:13,747 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 41 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:13,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:13,788 INFO L225 Difference]: With dead ends: 17683 [2022-02-10 02:59:13,789 INFO L226 Difference]: Without dead ends: 17677 [2022-02-10 02:59:13,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=152, Invalid=1828, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:59:13,789 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 231 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:13,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 834 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:59:13,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17677 states. [2022-02-10 02:59:14,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17677 to 17361. [2022-02-10 02:59:14,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17361 states, 17360 states have (on average 3.301958525345622) internal successors, (57322), 17360 states have internal predecessors, (57322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:14,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17361 states to 17361 states and 57322 transitions. [2022-02-10 02:59:14,297 INFO L78 Accepts]: Start accepts. Automaton has 17361 states and 57322 transitions. Word has length 27 [2022-02-10 02:59:14,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:14,298 INFO L470 AbstractCegarLoop]: Abstraction has 17361 states and 57322 transitions. [2022-02-10 02:59:14,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 41 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:14,298 INFO L276 IsEmpty]: Start isEmpty. Operand 17361 states and 57322 transitions. [2022-02-10 02:59:14,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:14,333 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:14,333 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:14,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (439)] Forceful destruction successful, exit code 0 [2022-02-10 02:59:14,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable442,439 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:14,551 INFO L402 AbstractCegarLoop]: === Iteration 444 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:14,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:14,552 INFO L85 PathProgramCache]: Analyzing trace with hash -681225817, now seen corresponding path program 438 times [2022-02-10 02:59:14,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:14,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039901826] [2022-02-10 02:59:14,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:14,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:14,816 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:14,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:14,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039901826] [2022-02-10 02:59:14,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039901826] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:14,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127653039] [2022-02-10 02:59:14,816 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:59:14,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:14,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:14,817 INFO L229 MonitoredProcess]: Starting monitored process 440 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:14,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (440)] Waiting until timeout for monitored process [2022-02-10 02:59:14,848 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:59:14,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:14,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:14,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:15,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:15,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127653039] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:15,878 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:15,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 18] total 40 [2022-02-10 02:59:15,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830060654] [2022-02-10 02:59:15,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:15,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:59:15,879 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:15,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:59:15,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:59:15,879 INFO L87 Difference]: Start difference. First operand 17361 states and 57322 transitions. Second operand has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 40 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:16,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:16,547 INFO L93 Difference]: Finished difference Result 17671 states and 57880 transitions. [2022-02-10 02:59:16,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:59:16,547 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 40 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:16,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:16,584 INFO L225 Difference]: With dead ends: 17671 [2022-02-10 02:59:16,584 INFO L226 Difference]: Without dead ends: 17666 [2022-02-10 02:59:16,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=1672, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:59:16,585 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 213 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:16,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 951 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:59:16,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17666 states. [2022-02-10 02:59:16,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17666 to 17361. [2022-02-10 02:59:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17361 states, 17360 states have (on average 3.301958525345622) internal successors, (57322), 17360 states have internal predecessors, (57322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:16,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17361 states to 17361 states and 57322 transitions. [2022-02-10 02:59:16,940 INFO L78 Accepts]: Start accepts. Automaton has 17361 states and 57322 transitions. Word has length 27 [2022-02-10 02:59:16,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:16,940 INFO L470 AbstractCegarLoop]: Abstraction has 17361 states and 57322 transitions. [2022-02-10 02:59:16,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 40 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:16,940 INFO L276 IsEmpty]: Start isEmpty. Operand 17361 states and 57322 transitions. [2022-02-10 02:59:16,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:16,967 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:16,967 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:16,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (440)] Ended with exit code 0 [2022-02-10 02:59:17,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 440 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable443 [2022-02-10 02:59:17,167 INFO L402 AbstractCegarLoop]: === Iteration 445 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:17,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:17,167 INFO L85 PathProgramCache]: Analyzing trace with hash 775267943, now seen corresponding path program 439 times [2022-02-10 02:59:17,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:17,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096008077] [2022-02-10 02:59:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:17,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:17,385 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:17,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096008077] [2022-02-10 02:59:17,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096008077] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:17,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809645265] [2022-02-10 02:59:17,385 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:59:17,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:17,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:17,386 INFO L229 MonitoredProcess]: Starting monitored process 441 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:17,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (441)] Waiting until timeout for monitored process [2022-02-10 02:59:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:17,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:17,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:17,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:18,308 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:18,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809645265] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:18,309 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:18,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 18] total 39 [2022-02-10 02:59:18,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485061767] [2022-02-10 02:59:18,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:18,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:59:18,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:18,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:59:18,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:59:18,310 INFO L87 Difference]: Start difference. First operand 17361 states and 57322 transitions. Second operand has 40 states, 40 states have (on average 1.525) internal successors, (61), 39 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:19,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:19,045 INFO L93 Difference]: Finished difference Result 17654 states and 57833 transitions. [2022-02-10 02:59:19,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:59:19,045 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.525) internal successors, (61), 39 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:19,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:19,084 INFO L225 Difference]: With dead ends: 17654 [2022-02-10 02:59:19,085 INFO L226 Difference]: Without dead ends: 17647 [2022-02-10 02:59:19,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 23 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:59:19,085 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 237 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:19,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 860 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:59:19,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17647 states. [2022-02-10 02:59:19,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17647 to 17361. [2022-02-10 02:59:19,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17361 states, 17360 states have (on average 3.3019009216589863) internal successors, (57321), 17360 states have internal predecessors, (57321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:19,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17361 states to 17361 states and 57321 transitions. [2022-02-10 02:59:19,441 INFO L78 Accepts]: Start accepts. Automaton has 17361 states and 57321 transitions. Word has length 27 [2022-02-10 02:59:19,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:19,441 INFO L470 AbstractCegarLoop]: Abstraction has 17361 states and 57321 transitions. [2022-02-10 02:59:19,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.525) internal successors, (61), 39 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:19,441 INFO L276 IsEmpty]: Start isEmpty. Operand 17361 states and 57321 transitions. [2022-02-10 02:59:19,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:19,467 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:19,467 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:19,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (441)] Ended with exit code 0 [2022-02-10 02:59:19,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 441 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable444 [2022-02-10 02:59:19,668 INFO L402 AbstractCegarLoop]: === Iteration 446 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:19,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:19,668 INFO L85 PathProgramCache]: Analyzing trace with hash -923609749, now seen corresponding path program 440 times [2022-02-10 02:59:19,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:19,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732720910] [2022-02-10 02:59:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:19,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:19,891 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:19,892 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:19,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732720910] [2022-02-10 02:59:19,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732720910] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:19,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851123134] [2022-02-10 02:59:19,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:59:19,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:19,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:19,893 INFO L229 MonitoredProcess]: Starting monitored process 442 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:19,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (442)] Waiting until timeout for monitored process [2022-02-10 02:59:19,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:59:19,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:19,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:19,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:20,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:20,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851123134] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:20,783 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:20,783 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 18] total 38 [2022-02-10 02:59:20,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429811319] [2022-02-10 02:59:20,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:20,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 02:59:20,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:20,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 02:59:20,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:59:20,784 INFO L87 Difference]: Start difference. First operand 17361 states and 57321 transitions. Second operand has 39 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 38 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:21,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:21,467 INFO L93 Difference]: Finished difference Result 17622 states and 57732 transitions. [2022-02-10 02:59:21,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:59:21,467 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 38 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:21,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:21,507 INFO L225 Difference]: With dead ends: 17622 [2022-02-10 02:59:21,507 INFO L226 Difference]: Without dead ends: 17614 [2022-02-10 02:59:21,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=1749, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:59:21,507 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 192 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:21,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 740 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:59:21,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17614 states. [2022-02-10 02:59:21,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17614 to 17361. [2022-02-10 02:59:21,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17361 states, 17360 states have (on average 3.30184331797235) internal successors, (57320), 17360 states have internal predecessors, (57320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:21,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17361 states to 17361 states and 57320 transitions. [2022-02-10 02:59:21,982 INFO L78 Accepts]: Start accepts. Automaton has 17361 states and 57320 transitions. Word has length 27 [2022-02-10 02:59:21,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:21,982 INFO L470 AbstractCegarLoop]: Abstraction has 17361 states and 57320 transitions. [2022-02-10 02:59:21,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 38 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:21,983 INFO L276 IsEmpty]: Start isEmpty. Operand 17361 states and 57320 transitions. [2022-02-10 02:59:22,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:22,009 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:22,009 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:22,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (442)] Ended with exit code 0 [2022-02-10 02:59:22,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 442 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable445 [2022-02-10 02:59:22,209 INFO L402 AbstractCegarLoop]: === Iteration 447 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:22,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:22,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2049210649, now seen corresponding path program 441 times [2022-02-10 02:59:22,210 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:22,210 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648178089] [2022-02-10 02:59:22,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:22,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:22,442 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:22,442 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:22,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648178089] [2022-02-10 02:59:22,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648178089] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:22,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520054896] [2022-02-10 02:59:22,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:59:22,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:22,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:22,444 INFO L229 MonitoredProcess]: Starting monitored process 443 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:22,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (443)] Waiting until timeout for monitored process [2022-02-10 02:59:22,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 02:59:22,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:22,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:22,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:22,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:23,312 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:23,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520054896] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:23,312 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:23,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 18] total 37 [2022-02-10 02:59:23,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912769541] [2022-02-10 02:59:23,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:23,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 02:59:23,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:23,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 02:59:23,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1300, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:59:23,313 INFO L87 Difference]: Start difference. First operand 17361 states and 57320 transitions. Second operand has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 37 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:24,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:24,112 INFO L93 Difference]: Finished difference Result 17566 states and 57622 transitions. [2022-02-10 02:59:24,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:59:24,113 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 37 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:24,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:24,151 INFO L225 Difference]: With dead ends: 17566 [2022-02-10 02:59:24,151 INFO L226 Difference]: Without dead ends: 17557 [2022-02-10 02:59:24,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=1748, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:59:24,152 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 154 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:24,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 830 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:59:24,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17557 states. [2022-02-10 02:59:24,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17557 to 17361. [2022-02-10 02:59:24,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17361 states, 17360 states have (on average 3.3017857142857143) internal successors, (57319), 17360 states have internal predecessors, (57319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:24,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17361 states to 17361 states and 57319 transitions. [2022-02-10 02:59:24,515 INFO L78 Accepts]: Start accepts. Automaton has 17361 states and 57319 transitions. Word has length 27 [2022-02-10 02:59:24,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:24,515 INFO L470 AbstractCegarLoop]: Abstraction has 17361 states and 57319 transitions. [2022-02-10 02:59:24,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 37 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:24,516 INFO L276 IsEmpty]: Start isEmpty. Operand 17361 states and 57319 transitions. [2022-02-10 02:59:24,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:24,544 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:24,544 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:24,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (443)] Ended with exit code 0 [2022-02-10 02:59:24,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable446,443 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:24,745 INFO L402 AbstractCegarLoop]: === Iteration 448 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:24,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:24,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1711867115, now seen corresponding path program 442 times [2022-02-10 02:59:24,745 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:24,745 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680727985] [2022-02-10 02:59:24,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:24,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:24,978 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:24,978 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:24,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680727985] [2022-02-10 02:59:24,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680727985] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:24,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788101612] [2022-02-10 02:59:24,978 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:59:24,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:24,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:24,979 INFO L229 MonitoredProcess]: Starting monitored process 444 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:24,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (444)] Waiting until timeout for monitored process [2022-02-10 02:59:25,006 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:59:25,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:25,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:25,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:25,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:25,828 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:25,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788101612] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:25,829 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:25,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 18] total 36 [2022-02-10 02:59:25,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316932706] [2022-02-10 02:59:25,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:25,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:59:25,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:25,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:59:25,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:59:25,829 INFO L87 Difference]: Start difference. First operand 17361 states and 57319 transitions. Second operand has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:26,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:26,676 INFO L93 Difference]: Finished difference Result 17521 states and 57529 transitions. [2022-02-10 02:59:26,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:59:26,677 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:26,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:26,713 INFO L225 Difference]: With dead ends: 17521 [2022-02-10 02:59:26,713 INFO L226 Difference]: Without dead ends: 17517 [2022-02-10 02:59:26,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=1670, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:59:26,713 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 153 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:26,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 829 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:59:26,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17517 states. [2022-02-10 02:59:26,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17517 to 17361. [2022-02-10 02:59:27,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17361 states, 17360 states have (on average 3.3017857142857143) internal successors, (57319), 17360 states have internal predecessors, (57319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17361 states to 17361 states and 57319 transitions. [2022-02-10 02:59:27,057 INFO L78 Accepts]: Start accepts. Automaton has 17361 states and 57319 transitions. Word has length 27 [2022-02-10 02:59:27,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:27,057 INFO L470 AbstractCegarLoop]: Abstraction has 17361 states and 57319 transitions. [2022-02-10 02:59:27,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:27,058 INFO L276 IsEmpty]: Start isEmpty. Operand 17361 states and 57319 transitions. [2022-02-10 02:59:27,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:27,091 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:27,091 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:27,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (444)] Ended with exit code 0 [2022-02-10 02:59:27,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 444 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable447 [2022-02-10 02:59:27,292 INFO L402 AbstractCegarLoop]: === Iteration 449 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:27,292 INFO L85 PathProgramCache]: Analyzing trace with hash 408678763, now seen corresponding path program 443 times [2022-02-10 02:59:27,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:27,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290153071] [2022-02-10 02:59:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:27,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:27,514 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:27,514 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:27,515 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290153071] [2022-02-10 02:59:27,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290153071] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:27,515 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245747118] [2022-02-10 02:59:27,515 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:59:27,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:27,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:27,516 INFO L229 MonitoredProcess]: Starting monitored process 445 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:27,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (445)] Waiting until timeout for monitored process [2022-02-10 02:59:27,544 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:59:27,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:27,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:27,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:27,887 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:59:27,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:28,412 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:28,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245747118] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:28,413 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:28,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 18] total 38 [2022-02-10 02:59:28,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519852771] [2022-02-10 02:59:28,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:28,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 02:59:28,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:28,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 02:59:28,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1369, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:59:28,413 INFO L87 Difference]: Start difference. First operand 17361 states and 57319 transitions. Second operand has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:29,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:29,076 INFO L93 Difference]: Finished difference Result 17534 states and 57506 transitions. [2022-02-10 02:59:29,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:59:29,076 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:29,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:29,119 INFO L225 Difference]: With dead ends: 17534 [2022-02-10 02:59:29,119 INFO L226 Difference]: Without dead ends: 17526 [2022-02-10 02:59:29,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 23 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=1658, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:59:29,119 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 139 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:29,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 788 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:59:29,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17526 states. [2022-02-10 02:59:29,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17526 to 17351. [2022-02-10 02:59:29,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17351 states, 17350 states have (on average 3.30149855907781) internal successors, (57281), 17350 states have internal predecessors, (57281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17351 states to 17351 states and 57281 transitions. [2022-02-10 02:59:29,588 INFO L78 Accepts]: Start accepts. Automaton has 17351 states and 57281 transitions. Word has length 27 [2022-02-10 02:59:29,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:29,588 INFO L470 AbstractCegarLoop]: Abstraction has 17351 states and 57281 transitions. [2022-02-10 02:59:29,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:29,588 INFO L276 IsEmpty]: Start isEmpty. Operand 17351 states and 57281 transitions. [2022-02-10 02:59:29,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:29,617 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:29,617 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:29,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (445)] Ended with exit code 0 [2022-02-10 02:59:29,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 445 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable448 [2022-02-10 02:59:29,818 INFO L402 AbstractCegarLoop]: === Iteration 450 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:29,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:29,818 INFO L85 PathProgramCache]: Analyzing trace with hash 168876143, now seen corresponding path program 444 times [2022-02-10 02:59:29,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:29,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060748227] [2022-02-10 02:59:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:29,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:30,049 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:30,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060748227] [2022-02-10 02:59:30,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060748227] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:30,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912706893] [2022-02-10 02:59:30,050 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:59:30,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:30,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:30,051 INFO L229 MonitoredProcess]: Starting monitored process 446 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:30,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (446)] Waiting until timeout for monitored process [2022-02-10 02:59:30,079 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:59:30,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:30,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:30,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:59:30,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:30,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912706893] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:30,926 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:30,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 18] total 37 [2022-02-10 02:59:30,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491942647] [2022-02-10 02:59:30,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:30,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 02:59:30,926 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:30,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 02:59:30,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1298, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:59:30,927 INFO L87 Difference]: Start difference. First operand 17351 states and 57281 transitions. Second operand has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:31,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:31,687 INFO L93 Difference]: Finished difference Result 17523 states and 57465 transitions. [2022-02-10 02:59:31,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:59:31,687 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:31,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:31,728 INFO L225 Difference]: With dead ends: 17523 [2022-02-10 02:59:31,729 INFO L226 Difference]: Without dead ends: 17514 [2022-02-10 02:59:31,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=149, Invalid=1657, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:59:31,729 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 113 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:31,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 790 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:59:31,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17514 states. [2022-02-10 02:59:32,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17514 to 17342. [2022-02-10 02:59:32,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17342 states, 17341 states have (on average 3.301366703188974) internal successors, (57249), 17341 states have internal predecessors, (57249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17342 states to 17342 states and 57249 transitions. [2022-02-10 02:59:32,097 INFO L78 Accepts]: Start accepts. Automaton has 17342 states and 57249 transitions. Word has length 27 [2022-02-10 02:59:32,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:32,097 INFO L470 AbstractCegarLoop]: Abstraction has 17342 states and 57249 transitions. [2022-02-10 02:59:32,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:32,097 INFO L276 IsEmpty]: Start isEmpty. Operand 17342 states and 57249 transitions. [2022-02-10 02:59:32,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:32,124 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:32,124 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:32,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (446)] Ended with exit code 0 [2022-02-10 02:59:32,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable449,446 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:32,325 INFO L402 AbstractCegarLoop]: === Iteration 451 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:32,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:32,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1324929515, now seen corresponding path program 445 times [2022-02-10 02:59:32,325 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:32,325 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119677171] [2022-02-10 02:59:32,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:32,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:32,562 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:32,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119677171] [2022-02-10 02:59:32,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119677171] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:32,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087144003] [2022-02-10 02:59:32,562 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:59:32,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:32,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:32,563 INFO L229 MonitoredProcess]: Starting monitored process 447 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:32,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (447)] Waiting until timeout for monitored process [2022-02-10 02:59:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:32,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:32,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:59:32,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:33,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087144003] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:33,399 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:33,399 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 18] total 36 [2022-02-10 02:59:33,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755777051] [2022-02-10 02:59:33,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:33,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:59:33,400 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:33,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:59:33,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1229, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:59:33,400 INFO L87 Difference]: Start difference. First operand 17342 states and 57249 transitions. Second operand has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:34,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:34,136 INFO L93 Difference]: Finished difference Result 17452 states and 57365 transitions. [2022-02-10 02:59:34,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:59:34,136 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:34,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:34,174 INFO L225 Difference]: With dead ends: 17452 [2022-02-10 02:59:34,175 INFO L226 Difference]: Without dead ends: 17448 [2022-02-10 02:59:34,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=1658, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:59:34,175 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 149 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:34,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 662 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:59:34,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17448 states. [2022-02-10 02:59:34,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17448 to 17333. [2022-02-10 02:59:34,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17333 states, 17332 states have (on average 3.3015231940918532) internal successors, (57222), 17332 states have internal predecessors, (57222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:34,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17333 states to 17333 states and 57222 transitions. [2022-02-10 02:59:34,545 INFO L78 Accepts]: Start accepts. Automaton has 17333 states and 57222 transitions. Word has length 27 [2022-02-10 02:59:34,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:34,546 INFO L470 AbstractCegarLoop]: Abstraction has 17333 states and 57222 transitions. [2022-02-10 02:59:34,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:34,546 INFO L276 IsEmpty]: Start isEmpty. Operand 17333 states and 57222 transitions. [2022-02-10 02:59:34,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:34,572 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:34,572 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:34,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (447)] Ended with exit code 0 [2022-02-10 02:59:34,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable450,447 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:34,773 INFO L402 AbstractCegarLoop]: === Iteration 452 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:34,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:34,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1063549325, now seen corresponding path program 446 times [2022-02-10 02:59:34,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:34,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489501237] [2022-02-10 02:59:34,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:34,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:34,986 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:34,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489501237] [2022-02-10 02:59:34,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489501237] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:34,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712356242] [2022-02-10 02:59:34,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:59:34,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:34,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:34,987 INFO L229 MonitoredProcess]: Starting monitored process 448 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:34,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (448)] Waiting until timeout for monitored process [2022-02-10 02:59:35,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:59:35,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:35,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:35,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:35,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:35,878 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:35,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712356242] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:35,878 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:35,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18] total 41 [2022-02-10 02:59:35,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419317088] [2022-02-10 02:59:35,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:35,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-10 02:59:35,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:35,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-10 02:59:35,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1596, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 02:59:35,879 INFO L87 Difference]: Start difference. First operand 17333 states and 57222 transitions. Second operand has 42 states, 42 states have (on average 1.5) internal successors, (63), 41 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:36,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:36,570 INFO L93 Difference]: Finished difference Result 17761 states and 58066 transitions. [2022-02-10 02:59:36,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:59:36,570 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.5) internal successors, (63), 41 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:36,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:36,620 INFO L225 Difference]: With dead ends: 17761 [2022-02-10 02:59:36,620 INFO L226 Difference]: Without dead ends: 17755 [2022-02-10 02:59:36,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=152, Invalid=1828, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:59:36,620 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 231 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:36,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 954 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:59:36,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17755 states. [2022-02-10 02:59:37,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17755 to 17396. [2022-02-10 02:59:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17396 states, 17395 states have (on average 3.302443230813452) internal successors, (57446), 17395 states have internal predecessors, (57446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17396 states to 17396 states and 57446 transitions. [2022-02-10 02:59:37,075 INFO L78 Accepts]: Start accepts. Automaton has 17396 states and 57446 transitions. Word has length 27 [2022-02-10 02:59:37,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:37,076 INFO L470 AbstractCegarLoop]: Abstraction has 17396 states and 57446 transitions. [2022-02-10 02:59:37,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.5) internal successors, (63), 41 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:37,076 INFO L276 IsEmpty]: Start isEmpty. Operand 17396 states and 57446 transitions. [2022-02-10 02:59:37,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:37,102 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:37,102 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:37,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (448)] Ended with exit code 0 [2022-02-10 02:59:37,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 448 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable451 [2022-02-10 02:59:37,303 INFO L402 AbstractCegarLoop]: === Iteration 453 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:37,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:37,303 INFO L85 PathProgramCache]: Analyzing trace with hash -219540945, now seen corresponding path program 447 times [2022-02-10 02:59:37,303 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:37,303 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787485027] [2022-02-10 02:59:37,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:37,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:37,518 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:37,518 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:37,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787485027] [2022-02-10 02:59:37,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787485027] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:37,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037836796] [2022-02-10 02:59:37,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:59:37,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:37,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:37,520 INFO L229 MonitoredProcess]: Starting monitored process 449 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:37,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (449)] Waiting until timeout for monitored process [2022-02-10 02:59:37,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:59:37,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:37,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:37,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:37,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:38,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037836796] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:38,382 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:38,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18] total 40 [2022-02-10 02:59:38,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561331268] [2022-02-10 02:59:38,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:38,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:59:38,382 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:38,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:59:38,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:59:38,383 INFO L87 Difference]: Start difference. First operand 17396 states and 57446 transitions. Second operand has 41 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 40 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:39,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:39,013 INFO L93 Difference]: Finished difference Result 17749 states and 58047 transitions. [2022-02-10 02:59:39,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:59:39,013 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 40 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:39,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:39,051 INFO L225 Difference]: With dead ends: 17749 [2022-02-10 02:59:39,052 INFO L226 Difference]: Without dead ends: 17744 [2022-02-10 02:59:39,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=1672, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:59:39,052 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 196 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:39,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 914 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:59:39,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17744 states. [2022-02-10 02:59:39,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17744 to 17396. [2022-02-10 02:59:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17396 states, 17395 states have (on average 3.302443230813452) internal successors, (57446), 17395 states have internal predecessors, (57446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:39,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17396 states to 17396 states and 57446 transitions. [2022-02-10 02:59:39,410 INFO L78 Accepts]: Start accepts. Automaton has 17396 states and 57446 transitions. Word has length 27 [2022-02-10 02:59:39,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:39,410 INFO L470 AbstractCegarLoop]: Abstraction has 17396 states and 57446 transitions. [2022-02-10 02:59:39,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 40 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:39,411 INFO L276 IsEmpty]: Start isEmpty. Operand 17396 states and 57446 transitions. [2022-02-10 02:59:39,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:39,438 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:39,438 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:39,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (449)] Ended with exit code 0 [2022-02-10 02:59:39,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 449 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable452 [2022-02-10 02:59:39,638 INFO L402 AbstractCegarLoop]: === Iteration 454 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:39,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:39,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1236952815, now seen corresponding path program 448 times [2022-02-10 02:59:39,638 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:39,639 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710103960] [2022-02-10 02:59:39,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:39,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:39,855 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:39,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710103960] [2022-02-10 02:59:39,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710103960] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:39,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30150535] [2022-02-10 02:59:39,855 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:59:39,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:39,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:39,856 INFO L229 MonitoredProcess]: Starting monitored process 450 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:39,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (450)] Waiting until timeout for monitored process [2022-02-10 02:59:39,883 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:59:39,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:39,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:39,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:40,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:40,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30150535] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:40,748 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:40,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18] total 39 [2022-02-10 02:59:40,749 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222159329] [2022-02-10 02:59:40,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:40,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:59:40,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:40,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:59:40,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:59:40,749 INFO L87 Difference]: Start difference. First operand 17396 states and 57446 transitions. Second operand has 40 states, 40 states have (on average 1.5) internal successors, (60), 39 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:41,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:41,466 INFO L93 Difference]: Finished difference Result 17735 states and 58008 transitions. [2022-02-10 02:59:41,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:59:41,466 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.5) internal successors, (60), 39 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:41,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:41,504 INFO L225 Difference]: With dead ends: 17735 [2022-02-10 02:59:41,504 INFO L226 Difference]: Without dead ends: 17728 [2022-02-10 02:59:41,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:59:41,504 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 195 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:41,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 815 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:59:41,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17728 states. [2022-02-10 02:59:41,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17728 to 17396. [2022-02-10 02:59:41,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17396 states, 17395 states have (on average 3.3023857430296064) internal successors, (57445), 17395 states have internal predecessors, (57445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17396 states to 17396 states and 57445 transitions. [2022-02-10 02:59:41,835 INFO L78 Accepts]: Start accepts. Automaton has 17396 states and 57445 transitions. Word has length 27 [2022-02-10 02:59:41,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:41,835 INFO L470 AbstractCegarLoop]: Abstraction has 17396 states and 57445 transitions. [2022-02-10 02:59:41,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.5) internal successors, (60), 39 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:41,836 INFO L276 IsEmpty]: Start isEmpty. Operand 17396 states and 57445 transitions. [2022-02-10 02:59:41,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:41,861 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:41,861 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:41,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (450)] Ended with exit code 0 [2022-02-10 02:59:42,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 450 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable453 [2022-02-10 02:59:42,061 INFO L402 AbstractCegarLoop]: === Iteration 455 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:42,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:42,061 INFO L85 PathProgramCache]: Analyzing trace with hash -461924877, now seen corresponding path program 449 times [2022-02-10 02:59:42,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:42,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138885698] [2022-02-10 02:59:42,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:42,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:42,278 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:42,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138885698] [2022-02-10 02:59:42,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138885698] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:42,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80102749] [2022-02-10 02:59:42,278 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:59:42,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:42,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:42,279 INFO L229 MonitoredProcess]: Starting monitored process 451 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:42,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (451)] Waiting until timeout for monitored process [2022-02-10 02:59:42,307 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:59:42,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:42,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:42,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:42,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:43,147 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:43,147 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80102749] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:43,147 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:43,147 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18] total 38 [2022-02-10 02:59:43,147 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364506110] [2022-02-10 02:59:43,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:43,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 02:59:43,147 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:43,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 02:59:43,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:59:43,148 INFO L87 Difference]: Start difference. First operand 17396 states and 57445 transitions. Second operand has 39 states, 39 states have (on average 1.5128205128205128) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:43,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:43,863 INFO L93 Difference]: Finished difference Result 17716 states and 57931 transitions. [2022-02-10 02:59:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:59:43,863 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.5128205128205128) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:43,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:43,902 INFO L225 Difference]: With dead ends: 17716 [2022-02-10 02:59:43,903 INFO L226 Difference]: Without dead ends: 17708 [2022-02-10 02:59:43,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 25 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=1749, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:59:43,903 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 204 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:43,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 801 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:59:43,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17708 states. [2022-02-10 02:59:44,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17708 to 17396. [2022-02-10 02:59:44,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17396 states, 17395 states have (on average 3.3023282552457602) internal successors, (57444), 17395 states have internal predecessors, (57444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17396 states to 17396 states and 57444 transitions. [2022-02-10 02:59:44,370 INFO L78 Accepts]: Start accepts. Automaton has 17396 states and 57444 transitions. Word has length 27 [2022-02-10 02:59:44,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:44,370 INFO L470 AbstractCegarLoop]: Abstraction has 17396 states and 57444 transitions. [2022-02-10 02:59:44,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.5128205128205128) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:44,370 INFO L276 IsEmpty]: Start isEmpty. Operand 17396 states and 57444 transitions. [2022-02-10 02:59:44,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:44,396 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:44,396 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:44,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (451)] Ended with exit code 0 [2022-02-10 02:59:44,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 451 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable454 [2022-02-10 02:59:44,597 INFO L402 AbstractCegarLoop]: === Iteration 456 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:44,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:44,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1587525777, now seen corresponding path program 450 times [2022-02-10 02:59:44,597 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:44,598 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975829193] [2022-02-10 02:59:44,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:44,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:44,858 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:44,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975829193] [2022-02-10 02:59:44,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975829193] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:44,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158663066] [2022-02-10 02:59:44,859 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:59:44,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:44,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:44,860 INFO L229 MonitoredProcess]: Starting monitored process 452 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:44,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (452)] Waiting until timeout for monitored process [2022-02-10 02:59:44,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:59:44,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:44,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:44,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:45,202 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:45,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:45,708 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:45,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158663066] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:45,708 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:45,708 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18] total 37 [2022-02-10 02:59:45,708 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738178451] [2022-02-10 02:59:45,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:45,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 02:59:45,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:45,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 02:59:45,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1300, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:59:45,709 INFO L87 Difference]: Start difference. First operand 17396 states and 57444 transitions. Second operand has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 37 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:46,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:46,489 INFO L93 Difference]: Finished difference Result 17693 states and 57871 transitions. [2022-02-10 02:59:46,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:59:46,490 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 37 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:46,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:46,526 INFO L225 Difference]: With dead ends: 17693 [2022-02-10 02:59:46,526 INFO L226 Difference]: Without dead ends: 17684 [2022-02-10 02:59:46,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=1748, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:59:46,527 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 216 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:46,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 838 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:59:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17684 states. [2022-02-10 02:59:46,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17684 to 17396. [2022-02-10 02:59:46,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17396 states, 17395 states have (on average 3.3022707674619145) internal successors, (57443), 17395 states have internal predecessors, (57443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:46,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17396 states to 17396 states and 57443 transitions. [2022-02-10 02:59:46,893 INFO L78 Accepts]: Start accepts. Automaton has 17396 states and 57443 transitions. Word has length 27 [2022-02-10 02:59:46,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:46,894 INFO L470 AbstractCegarLoop]: Abstraction has 17396 states and 57443 transitions. [2022-02-10 02:59:46,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 37 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:46,894 INFO L276 IsEmpty]: Start isEmpty. Operand 17396 states and 57443 transitions. [2022-02-10 02:59:46,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:46,920 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:46,920 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:46,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (452)] Ended with exit code 0 [2022-02-10 02:59:47,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 452 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable455 [2022-02-10 02:59:47,120 INFO L402 AbstractCegarLoop]: === Iteration 457 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:47,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:47,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2121415309, now seen corresponding path program 451 times [2022-02-10 02:59:47,121 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:47,121 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539645696] [2022-02-10 02:59:47,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:47,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:47,351 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:47,351 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:47,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539645696] [2022-02-10 02:59:47,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539645696] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:47,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22742537] [2022-02-10 02:59:47,352 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:59:47,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:47,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:47,353 INFO L229 MonitoredProcess]: Starting monitored process 453 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:47,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (453)] Waiting until timeout for monitored process [2022-02-10 02:59:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:47,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:47,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:47,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:48,183 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:48,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22742537] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:48,183 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:48,183 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18] total 36 [2022-02-10 02:59:48,183 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620116168] [2022-02-10 02:59:48,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:48,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:59:48,183 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:48,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:59:48,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:59:48,184 INFO L87 Difference]: Start difference. First operand 17396 states and 57443 transitions. Second operand has 37 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:49,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:49,024 INFO L93 Difference]: Finished difference Result 17624 states and 57755 transitions. [2022-02-10 02:59:49,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 02:59:49,024 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:49,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:49,062 INFO L225 Difference]: With dead ends: 17624 [2022-02-10 02:59:49,063 INFO L226 Difference]: Without dead ends: 17614 [2022-02-10 02:59:49,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 27 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=1747, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:59:49,063 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 174 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:49,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 780 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:59:49,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17614 states. [2022-02-10 02:59:49,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17614 to 17396. [2022-02-10 02:59:49,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17396 states, 17395 states have (on average 3.3022132796780683) internal successors, (57442), 17395 states have internal predecessors, (57442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:49,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17396 states to 17396 states and 57442 transitions. [2022-02-10 02:59:49,403 INFO L78 Accepts]: Start accepts. Automaton has 17396 states and 57442 transitions. Word has length 27 [2022-02-10 02:59:49,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:49,403 INFO L470 AbstractCegarLoop]: Abstraction has 17396 states and 57442 transitions. [2022-02-10 02:59:49,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:49,403 INFO L276 IsEmpty]: Start isEmpty. Operand 17396 states and 57442 transitions. [2022-02-10 02:59:49,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:49,429 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:49,429 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:49,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (453)] Ended with exit code 0 [2022-02-10 02:59:49,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable456,453 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:49,629 INFO L402 AbstractCegarLoop]: === Iteration 458 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:49,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:49,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1492121617, now seen corresponding path program 452 times [2022-02-10 02:59:49,630 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:49,630 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096213463] [2022-02-10 02:59:49,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:49,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:49,888 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:49,888 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096213463] [2022-02-10 02:59:49,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096213463] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:49,888 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16397726] [2022-02-10 02:59:49,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:59:49,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:49,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:49,889 INFO L229 MonitoredProcess]: Starting monitored process 454 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:49,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (454)] Waiting until timeout for monitored process [2022-02-10 02:59:49,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:59:49,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:49,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:49,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:50,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:50,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16397726] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:50,661 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:50,661 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18] total 35 [2022-02-10 02:59:50,661 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500448444] [2022-02-10 02:59:50,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:50,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 02:59:50,662 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:50,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 02:59:50,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1164, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:59:50,662 INFO L87 Difference]: Start difference. First operand 17396 states and 57442 transitions. Second operand has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:51,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:51,497 INFO L93 Difference]: Finished difference Result 17581 states and 57672 transitions. [2022-02-10 02:59:51,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 02:59:51,498 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:51,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:51,535 INFO L225 Difference]: With dead ends: 17581 [2022-02-10 02:59:51,536 INFO L226 Difference]: Without dead ends: 17577 [2022-02-10 02:59:51,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=137, Invalid=1669, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:59:51,536 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 140 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:51,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 835 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:59:51,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17577 states. [2022-02-10 02:59:51,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17577 to 17396. [2022-02-10 02:59:51,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17396 states, 17395 states have (on average 3.3022132796780683) internal successors, (57442), 17395 states have internal predecessors, (57442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:51,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17396 states to 17396 states and 57442 transitions. [2022-02-10 02:59:51,964 INFO L78 Accepts]: Start accepts. Automaton has 17396 states and 57442 transitions. Word has length 27 [2022-02-10 02:59:51,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:51,964 INFO L470 AbstractCegarLoop]: Abstraction has 17396 states and 57442 transitions. [2022-02-10 02:59:51,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:51,964 INFO L276 IsEmpty]: Start isEmpty. Operand 17396 states and 57442 transitions. [2022-02-10 02:59:51,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:51,990 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:51,990 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:52,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (454)] Forceful destruction successful, exit code 0 [2022-02-10 02:59:52,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable457,454 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:52,191 INFO L402 AbstractCegarLoop]: === Iteration 459 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:52,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:52,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1298515051, now seen corresponding path program 453 times [2022-02-10 02:59:52,191 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:52,191 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310067297] [2022-02-10 02:59:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:52,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:52,414 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:52,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310067297] [2022-02-10 02:59:52,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310067297] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:52,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076746966] [2022-02-10 02:59:52,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:59:52,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:52,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:52,415 INFO L229 MonitoredProcess]: Starting monitored process 455 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:52,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (455)] Waiting until timeout for monitored process [2022-02-10 02:59:52,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:59:52,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:52,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:52,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:52,805 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:59:52,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:53,331 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:53,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076746966] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:53,331 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:53,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 18] total 38 [2022-02-10 02:59:53,332 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120806088] [2022-02-10 02:59:53,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:53,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 02:59:53,332 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:53,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 02:59:53,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1369, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:59:53,332 INFO L87 Difference]: Start difference. First operand 17396 states and 57442 transitions. Second operand has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:53,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:53,942 INFO L93 Difference]: Finished difference Result 17606 states and 57668 transitions. [2022-02-10 02:59:53,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:59:53,943 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:53,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:53,983 INFO L225 Difference]: With dead ends: 17606 [2022-02-10 02:59:53,983 INFO L226 Difference]: Without dead ends: 17598 [2022-02-10 02:59:53,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 11 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=1658, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:59:53,984 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 237 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:53,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 680 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:59:53,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17598 states. [2022-02-10 02:59:54,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17598 to 17385. [2022-02-10 02:59:54,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17385 states, 17384 states have (on average 3.301829268292683) internal successors, (57399), 17384 states have internal predecessors, (57399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:54,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17385 states to 17385 states and 57399 transitions. [2022-02-10 02:59:54,326 INFO L78 Accepts]: Start accepts. Automaton has 17385 states and 57399 transitions. Word has length 27 [2022-02-10 02:59:54,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:54,326 INFO L470 AbstractCegarLoop]: Abstraction has 17385 states and 57399 transitions. [2022-02-10 02:59:54,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:54,326 INFO L276 IsEmpty]: Start isEmpty. Operand 17385 states and 57399 transitions. [2022-02-10 02:59:54,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:54,352 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:54,352 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:54,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (455)] Ended with exit code 0 [2022-02-10 02:59:54,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 455 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable458 [2022-02-10 02:59:54,553 INFO L402 AbstractCegarLoop]: === Iteration 460 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:54,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:54,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1058712431, now seen corresponding path program 454 times [2022-02-10 02:59:54,553 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:54,553 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187987945] [2022-02-10 02:59:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:54,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:54,780 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:54,781 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:54,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187987945] [2022-02-10 02:59:54,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187987945] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:54,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587330763] [2022-02-10 02:59:54,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:59:54,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:54,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:54,782 INFO L229 MonitoredProcess]: Starting monitored process 456 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:54,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (456)] Waiting until timeout for monitored process [2022-02-10 02:59:54,809 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:59:54,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:54,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:54,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:55,169 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:59:55,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:55,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587330763] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:55,669 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:55,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 18] total 37 [2022-02-10 02:59:55,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478837958] [2022-02-10 02:59:55,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:55,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 02:59:55,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:55,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 02:59:55,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1298, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:59:55,670 INFO L87 Difference]: Start difference. First operand 17385 states and 57399 transitions. Second operand has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:56,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:56,403 INFO L93 Difference]: Finished difference Result 17610 states and 57643 transitions. [2022-02-10 02:59:56,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:59:56,404 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:56,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:56,443 INFO L225 Difference]: With dead ends: 17610 [2022-02-10 02:59:56,443 INFO L226 Difference]: Without dead ends: 17601 [2022-02-10 02:59:56,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=149, Invalid=1657, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:59:56,443 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 187 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:56,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 713 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:59:56,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17601 states. [2022-02-10 02:59:56,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17601 to 17370. [2022-02-10 02:59:56,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17370 states, 17369 states have (on average 3.301571765789625) internal successors, (57345), 17369 states have internal predecessors, (57345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17370 states to 17370 states and 57345 transitions. [2022-02-10 02:59:56,791 INFO L78 Accepts]: Start accepts. Automaton has 17370 states and 57345 transitions. Word has length 27 [2022-02-10 02:59:56,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:56,791 INFO L470 AbstractCegarLoop]: Abstraction has 17370 states and 57345 transitions. [2022-02-10 02:59:56,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:56,791 INFO L276 IsEmpty]: Start isEmpty. Operand 17370 states and 57345 transitions. [2022-02-10 02:59:56,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:56,816 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:56,816 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:56,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (456)] Ended with exit code 0 [2022-02-10 02:59:57,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable459,456 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:57,017 INFO L402 AbstractCegarLoop]: === Iteration 461 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:57,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:57,017 INFO L85 PathProgramCache]: Analyzing trace with hash -2080201493, now seen corresponding path program 455 times [2022-02-10 02:59:57,017 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:57,017 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006004428] [2022-02-10 02:59:57,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:57,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:57,248 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:57,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:57,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006004428] [2022-02-10 02:59:57,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006004428] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:57,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635545865] [2022-02-10 02:59:57,248 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:59:57,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:57,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:57,249 INFO L229 MonitoredProcess]: Starting monitored process 457 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:57,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (457)] Waiting until timeout for monitored process [2022-02-10 02:59:57,293 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:59:57,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:57,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:57,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:59:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:59:57,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:59:58,105 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:58,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635545865] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:59:58,106 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:59:58,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 18] total 36 [2022-02-10 02:59:58,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984440924] [2022-02-10 02:59:58,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:59:58,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 02:59:58,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:59:58,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 02:59:58,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1229, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 02:59:58,107 INFO L87 Difference]: Start difference. First operand 17370 states and 57345 transitions. Second operand has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:58,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:59:58,843 INFO L93 Difference]: Finished difference Result 17587 states and 57577 transitions. [2022-02-10 02:59:58,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:59:58,843 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:59:58,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:59:58,879 INFO L225 Difference]: With dead ends: 17587 [2022-02-10 02:59:58,879 INFO L226 Difference]: Without dead ends: 17577 [2022-02-10 02:59:58,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=1656, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:59:58,879 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 199 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:59:58,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 724 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:59:58,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17577 states. [2022-02-10 02:59:59,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17577 to 17357. [2022-02-10 02:59:59,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17357 states, 17356 states have (on average 3.301509564415764) internal successors, (57301), 17356 states have internal predecessors, (57301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:59,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17357 states to 17357 states and 57301 transitions. [2022-02-10 02:59:59,316 INFO L78 Accepts]: Start accepts. Automaton has 17357 states and 57301 transitions. Word has length 27 [2022-02-10 02:59:59,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:59:59,316 INFO L470 AbstractCegarLoop]: Abstraction has 17357 states and 57301 transitions. [2022-02-10 02:59:59,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:59:59,317 INFO L276 IsEmpty]: Start isEmpty. Operand 17357 states and 57301 transitions. [2022-02-10 02:59:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:59:59,344 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:59:59,344 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:59:59,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (457)] Ended with exit code 0 [2022-02-10 02:59:59,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable460,457 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:59,545 INFO L402 AbstractCegarLoop]: === Iteration 462 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:59:59,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:59:59,545 INFO L85 PathProgramCache]: Analyzing trace with hash -602285329, now seen corresponding path program 456 times [2022-02-10 02:59:59,545 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:59:59,546 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434011122] [2022-02-10 02:59:59,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:59:59,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:59:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:59:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:59:59,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:59:59,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434011122] [2022-02-10 02:59:59,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434011122] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:59:59,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935741928] [2022-02-10 02:59:59,780 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:59:59,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:59:59,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:59:59,781 INFO L229 MonitoredProcess]: Starting monitored process 458 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:59:59,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (458)] Waiting until timeout for monitored process [2022-02-10 02:59:59,810 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:59:59,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:59:59,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 02:59:59,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:00:00,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:00,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935741928] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:00,553 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:00,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18] total 35 [2022-02-10 03:00:00,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446592394] [2022-02-10 03:00:00,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:00,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 03:00:00,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:00,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 03:00:00,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1162, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:00:00,554 INFO L87 Difference]: Start difference. First operand 17357 states and 57301 transitions. Second operand has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:01,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:01,268 INFO L93 Difference]: Finished difference Result 17489 states and 57440 transitions. [2022-02-10 03:00:01,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 03:00:01,269 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 03:00:01,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:01,307 INFO L225 Difference]: With dead ends: 17489 [2022-02-10 03:00:01,307 INFO L226 Difference]: Without dead ends: 17485 [2022-02-10 03:00:01,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=149, Invalid=1657, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 03:00:01,308 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 122 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:01,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 640 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:00:01,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17485 states. [2022-02-10 03:00:01,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17485 to 17344. [2022-02-10 03:00:01,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17344 states, 17343 states have (on average 3.3017355705471947) internal successors, (57262), 17343 states have internal predecessors, (57262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:01,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17344 states to 17344 states and 57262 transitions. [2022-02-10 03:00:01,683 INFO L78 Accepts]: Start accepts. Automaton has 17344 states and 57262 transitions. Word has length 27 [2022-02-10 03:00:01,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:01,683 INFO L470 AbstractCegarLoop]: Abstraction has 17344 states and 57262 transitions. [2022-02-10 03:00:01,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:01,683 INFO L276 IsEmpty]: Start isEmpty. Operand 17344 states and 57262 transitions. [2022-02-10 03:00:01,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 03:00:01,713 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:01,713 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:01,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (458)] Ended with exit code 0 [2022-02-10 03:00:01,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable461,458 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:01,914 INFO L402 AbstractCegarLoop]: === Iteration 463 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:01,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:01,914 INFO L85 PathProgramCache]: Analyzing trace with hash 363779819, now seen corresponding path program 457 times [2022-02-10 03:00:01,914 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:01,914 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285238582] [2022-02-10 03:00:01,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:01,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:02,151 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:02,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285238582] [2022-02-10 03:00:02,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285238582] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:02,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585035047] [2022-02-10 03:00:02,151 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:00:02,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:02,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:02,152 INFO L229 MonitoredProcess]: Starting monitored process 459 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:02,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (459)] Waiting until timeout for monitored process [2022-02-10 03:00:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:02,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 03:00:02,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:02,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:03,020 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:03,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585035047] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:03,020 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:03,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 41 [2022-02-10 03:00:03,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524346863] [2022-02-10 03:00:03,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:03,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-10 03:00:03,020 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:03,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-10 03:00:03,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1596, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 03:00:03,021 INFO L87 Difference]: Start difference. First operand 17344 states and 57262 transitions. Second operand has 42 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 41 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:03,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:03,712 INFO L93 Difference]: Finished difference Result 17871 states and 58345 transitions. [2022-02-10 03:00:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 03:00:03,713 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 41 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 03:00:03,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:03,752 INFO L225 Difference]: With dead ends: 17871 [2022-02-10 03:00:03,752 INFO L226 Difference]: Without dead ends: 17865 [2022-02-10 03:00:03,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=152, Invalid=1828, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 03:00:03,752 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 306 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:03,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 890 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:00:03,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17865 states. [2022-02-10 03:00:04,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17865 to 17443. [2022-02-10 03:00:04,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17443 states, 17442 states have (on average 3.302946909758055) internal successors, (57610), 17442 states have internal predecessors, (57610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:04,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17443 states to 17443 states and 57610 transitions. [2022-02-10 03:00:04,115 INFO L78 Accepts]: Start accepts. Automaton has 17443 states and 57610 transitions. Word has length 27 [2022-02-10 03:00:04,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:04,115 INFO L470 AbstractCegarLoop]: Abstraction has 17443 states and 57610 transitions. [2022-02-10 03:00:04,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 41 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:04,115 INFO L276 IsEmpty]: Start isEmpty. Operand 17443 states and 57610 transitions. [2022-02-10 03:00:04,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 03:00:04,141 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:04,141 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:04,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (459)] Ended with exit code 0 [2022-02-10 03:00:04,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable462,459 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:04,342 INFO L402 AbstractCegarLoop]: === Iteration 464 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:04,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:04,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1207788199, now seen corresponding path program 458 times [2022-02-10 03:00:04,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:04,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989125965] [2022-02-10 03:00:04,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:04,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:04,544 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:04,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:04,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989125965] [2022-02-10 03:00:04,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989125965] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:04,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495343298] [2022-02-10 03:00:04,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:00:04,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:04,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:04,545 INFO L229 MonitoredProcess]: Starting monitored process 460 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:04,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (460)] Waiting until timeout for monitored process [2022-02-10 03:00:04,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:00:04,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:04,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 03:00:04,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:04,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:05,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495343298] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:05,380 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:05,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 40 [2022-02-10 03:00:05,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910641786] [2022-02-10 03:00:05,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:05,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 03:00:05,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:05,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 03:00:05,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 03:00:05,381 INFO L87 Difference]: Start difference. First operand 17443 states and 57610 transitions. Second operand has 41 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 40 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:05,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:05,989 INFO L93 Difference]: Finished difference Result 17861 states and 58325 transitions. [2022-02-10 03:00:05,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 03:00:05,990 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 40 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 03:00:05,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:06,030 INFO L225 Difference]: With dead ends: 17861 [2022-02-10 03:00:06,030 INFO L226 Difference]: Without dead ends: 17856 [2022-02-10 03:00:06,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=1672, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 03:00:06,031 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 250 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:06,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 878 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:00:06,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17856 states. [2022-02-10 03:00:06,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17856 to 17443. [2022-02-10 03:00:06,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17443 states, 17442 states have (on average 3.302946909758055) internal successors, (57610), 17442 states have internal predecessors, (57610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:06,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17443 states to 17443 states and 57610 transitions. [2022-02-10 03:00:06,540 INFO L78 Accepts]: Start accepts. Automaton has 17443 states and 57610 transitions. Word has length 27 [2022-02-10 03:00:06,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:06,540 INFO L470 AbstractCegarLoop]: Abstraction has 17443 states and 57610 transitions. [2022-02-10 03:00:06,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 40 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:06,541 INFO L276 IsEmpty]: Start isEmpty. Operand 17443 states and 57610 transitions. [2022-02-10 03:00:06,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 03:00:06,569 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:06,569 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:06,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (460)] Ended with exit code 0 [2022-02-10 03:00:06,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 460 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable463 [2022-02-10 03:00:06,773 INFO L402 AbstractCegarLoop]: === Iteration 465 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:06,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:06,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1630685337, now seen corresponding path program 459 times [2022-02-10 03:00:06,774 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:06,774 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939096574] [2022-02-10 03:00:06,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:06,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:06,994 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:06,994 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:06,994 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939096574] [2022-02-10 03:00:06,995 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939096574] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:06,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312271115] [2022-02-10 03:00:06,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:00:06,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:06,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:06,996 INFO L229 MonitoredProcess]: Starting monitored process 461 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:06,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (461)] Waiting until timeout for monitored process [2022-02-10 03:00:07,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 03:00:07,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:07,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 03:00:07,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:07,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:07,875 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:07,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312271115] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:07,876 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:07,876 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 39 [2022-02-10 03:00:07,876 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133400768] [2022-02-10 03:00:07,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:07,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 03:00:07,876 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:07,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 03:00:07,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:00:07,877 INFO L87 Difference]: Start difference. First operand 17443 states and 57610 transitions. Second operand has 40 states, 40 states have (on average 1.475) internal successors, (59), 39 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:08,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:08,617 INFO L93 Difference]: Finished difference Result 17855 states and 58303 transitions. [2022-02-10 03:00:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 03:00:08,617 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.475) internal successors, (59), 39 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 03:00:08,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:08,659 INFO L225 Difference]: With dead ends: 17855 [2022-02-10 03:00:08,660 INFO L226 Difference]: Without dead ends: 17848 [2022-02-10 03:00:08,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:00:08,660 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 237 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:08,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 984 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:00:08,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17848 states. [2022-02-10 03:00:08,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17848 to 17443. [2022-02-10 03:00:08,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17443 states, 17442 states have (on average 3.302889576883385) internal successors, (57609), 17442 states have internal predecessors, (57609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:09,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17443 states to 17443 states and 57609 transitions. [2022-02-10 03:00:09,042 INFO L78 Accepts]: Start accepts. Automaton has 17443 states and 57609 transitions. Word has length 27 [2022-02-10 03:00:09,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:09,042 INFO L470 AbstractCegarLoop]: Abstraction has 17443 states and 57609 transitions. [2022-02-10 03:00:09,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.475) internal successors, (59), 39 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:09,043 INFO L276 IsEmpty]: Start isEmpty. Operand 17443 states and 57609 transitions. [2022-02-10 03:00:09,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 03:00:09,069 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:09,069 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:09,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (461)] Forceful destruction successful, exit code 0 [2022-02-10 03:00:09,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 461 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable464 [2022-02-10 03:00:09,270 INFO L402 AbstractCegarLoop]: === Iteration 466 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:09,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:09,270 INFO L85 PathProgramCache]: Analyzing trace with hash 965404267, now seen corresponding path program 460 times [2022-02-10 03:00:09,270 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:09,270 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209161907] [2022-02-10 03:00:09,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:09,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:09,489 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:09,489 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:09,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209161907] [2022-02-10 03:00:09,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209161907] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:09,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184943469] [2022-02-10 03:00:09,489 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:00:09,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:09,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:09,490 INFO L229 MonitoredProcess]: Starting monitored process 462 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:09,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (462)] Waiting until timeout for monitored process [2022-02-10 03:00:09,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:00:09,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:09,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 03:00:09,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:09,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:10,352 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:10,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184943469] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:10,352 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:10,352 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 38 [2022-02-10 03:00:10,352 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132604968] [2022-02-10 03:00:10,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:10,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 03:00:10,352 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:10,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 03:00:10,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:00:10,353 INFO L87 Difference]: Start difference. First operand 17443 states and 57609 transitions. Second operand has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 38 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:11,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:11,207 INFO L93 Difference]: Finished difference Result 17845 states and 58252 transitions. [2022-02-10 03:00:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 03:00:11,208 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 38 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 03:00:11,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:11,251 INFO L225 Difference]: With dead ends: 17845 [2022-02-10 03:00:11,251 INFO L226 Difference]: Without dead ends: 17837 [2022-02-10 03:00:11,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=143, Invalid=1749, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:00:11,251 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 211 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:11,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 925 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 03:00:11,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17837 states. [2022-02-10 03:00:11,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17837 to 17443. [2022-02-10 03:00:11,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17443 states, 17442 states have (on average 3.3028322440087146) internal successors, (57608), 17442 states have internal predecessors, (57608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:11,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17443 states to 17443 states and 57608 transitions. [2022-02-10 03:00:11,657 INFO L78 Accepts]: Start accepts. Automaton has 17443 states and 57608 transitions. Word has length 27 [2022-02-10 03:00:11,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:11,658 INFO L470 AbstractCegarLoop]: Abstraction has 17443 states and 57608 transitions. [2022-02-10 03:00:11,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 38 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:11,658 INFO L276 IsEmpty]: Start isEmpty. Operand 17443 states and 57608 transitions. [2022-02-10 03:00:11,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 03:00:11,688 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:11,688 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:11,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (462)] Forceful destruction successful, exit code 0 [2022-02-10 03:00:11,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable465,462 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:11,889 INFO L402 AbstractCegarLoop]: === Iteration 467 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:11,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:11,889 INFO L85 PathProgramCache]: Analyzing trace with hash -160196633, now seen corresponding path program 461 times [2022-02-10 03:00:11,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:11,889 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094200811] [2022-02-10 03:00:11,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:11,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:12,118 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:12,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094200811] [2022-02-10 03:00:12,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094200811] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:12,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602904670] [2022-02-10 03:00:12,119 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:00:12,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:12,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:12,120 INFO L229 MonitoredProcess]: Starting monitored process 463 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:12,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (463)] Waiting until timeout for monitored process [2022-02-10 03:00:12,147 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 03:00:12,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:12,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 03:00:12,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:12,450 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:12,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:12,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602904670] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:12,946 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:12,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 37 [2022-02-10 03:00:12,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956655040] [2022-02-10 03:00:12,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:12,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 03:00:12,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:12,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 03:00:12,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1300, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:00:12,947 INFO L87 Difference]: Start difference. First operand 17443 states and 57608 transitions. Second operand has 38 states, 38 states have (on average 1.5) internal successors, (57), 37 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:13,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:13,744 INFO L93 Difference]: Finished difference Result 17831 states and 58195 transitions. [2022-02-10 03:00:13,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 03:00:13,744 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5) internal successors, (57), 37 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 03:00:13,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:13,786 INFO L225 Difference]: With dead ends: 17831 [2022-02-10 03:00:13,787 INFO L226 Difference]: Without dead ends: 17822 [2022-02-10 03:00:13,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 27 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=1748, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:00:13,787 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 217 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:13,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 836 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 03:00:13,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17822 states. [2022-02-10 03:00:14,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17822 to 17443. [2022-02-10 03:00:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17443 states, 17442 states have (on average 3.302774911134044) internal successors, (57607), 17442 states have internal predecessors, (57607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:14,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17443 states to 17443 states and 57607 transitions. [2022-02-10 03:00:14,249 INFO L78 Accepts]: Start accepts. Automaton has 17443 states and 57607 transitions. Word has length 27 [2022-02-10 03:00:14,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:14,249 INFO L470 AbstractCegarLoop]: Abstraction has 17443 states and 57607 transitions. [2022-02-10 03:00:14,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5) internal successors, (57), 37 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:14,249 INFO L276 IsEmpty]: Start isEmpty. Operand 17443 states and 57607 transitions. [2022-02-10 03:00:14,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 03:00:14,275 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:14,275 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:14,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (463)] Ended with exit code 0 [2022-02-10 03:00:14,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 463 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable466 [2022-02-10 03:00:14,476 INFO L402 AbstractCegarLoop]: === Iteration 468 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:14,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:14,476 INFO L85 PathProgramCache]: Analyzing trace with hash -694086165, now seen corresponding path program 462 times [2022-02-10 03:00:14,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:14,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739883311] [2022-02-10 03:00:14,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:14,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:14,705 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:14,705 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:14,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739883311] [2022-02-10 03:00:14,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739883311] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:14,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263528285] [2022-02-10 03:00:14,705 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:00:14,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:14,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:14,706 INFO L229 MonitoredProcess]: Starting monitored process 464 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:14,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (464)] Waiting until timeout for monitored process [2022-02-10 03:00:14,735 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 03:00:14,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:14,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 03:00:14,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:15,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:15,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263528285] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:15,516 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:15,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 36 [2022-02-10 03:00:15,516 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101406950] [2022-02-10 03:00:15,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:15,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 03:00:15,516 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:15,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 03:00:15,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:00:15,517 INFO L87 Difference]: Start difference. First operand 17443 states and 57607 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:16,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:16,418 INFO L93 Difference]: Finished difference Result 17799 states and 58107 transitions. [2022-02-10 03:00:16,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 03:00:16,419 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 03:00:16,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:16,460 INFO L225 Difference]: With dead ends: 17799 [2022-02-10 03:00:16,460 INFO L226 Difference]: Without dead ends: 17789 [2022-02-10 03:00:16,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 28 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=145, Invalid=1747, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:00:16,461 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 201 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:16,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 910 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 03:00:16,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17789 states. [2022-02-10 03:00:16,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17789 to 17443. [2022-02-10 03:00:16,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17443 states, 17442 states have (on average 3.302717578259374) internal successors, (57606), 17442 states have internal predecessors, (57606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:16,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17443 states to 17443 states and 57606 transitions. [2022-02-10 03:00:16,854 INFO L78 Accepts]: Start accepts. Automaton has 17443 states and 57606 transitions. Word has length 27 [2022-02-10 03:00:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:16,854 INFO L470 AbstractCegarLoop]: Abstraction has 17443 states and 57606 transitions. [2022-02-10 03:00:16,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:16,854 INFO L276 IsEmpty]: Start isEmpty. Operand 17443 states and 57606 transitions. [2022-02-10 03:00:16,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 03:00:16,885 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:16,885 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:16,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (464)] Ended with exit code 0 [2022-02-10 03:00:17,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 464 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable467 [2022-02-10 03:00:17,085 INFO L402 AbstractCegarLoop]: === Iteration 469 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:17,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:17,086 INFO L85 PathProgramCache]: Analyzing trace with hash -64792473, now seen corresponding path program 463 times [2022-02-10 03:00:17,086 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:17,086 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637199131] [2022-02-10 03:00:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:17,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:17,325 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:17,326 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:17,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637199131] [2022-02-10 03:00:17,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637199131] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:17,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288348786] [2022-02-10 03:00:17,326 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:00:17,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:17,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:17,327 INFO L229 MonitoredProcess]: Starting monitored process 465 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:17,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (465)] Waiting until timeout for monitored process [2022-02-10 03:00:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:17,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 03:00:17,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:17,654 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:17,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:18,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288348786] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:18,099 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:18,099 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 35 [2022-02-10 03:00:18,099 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922435380] [2022-02-10 03:00:18,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:18,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 03:00:18,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:18,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 03:00:18,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1164, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:00:18,100 INFO L87 Difference]: Start difference. First operand 17443 states and 57606 transitions. Second operand has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:18,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:18,969 INFO L93 Difference]: Finished difference Result 17704 states and 57947 transitions. [2022-02-10 03:00:18,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 03:00:18,969 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 03:00:18,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:19,010 INFO L225 Difference]: With dead ends: 17704 [2022-02-10 03:00:19,011 INFO L226 Difference]: Without dead ends: 17693 [2022-02-10 03:00:19,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=1746, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:00:19,011 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 196 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:19,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 699 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 03:00:19,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17693 states. [2022-02-10 03:00:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17693 to 17441. [2022-02-10 03:00:19,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17441 states, 17440 states have (on average 3.3029243119266054) internal successors, (57603), 17440 states have internal predecessors, (57603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:19,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17441 states to 17441 states and 57603 transitions. [2022-02-10 03:00:19,374 INFO L78 Accepts]: Start accepts. Automaton has 17441 states and 57603 transitions. Word has length 27 [2022-02-10 03:00:19,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:19,374 INFO L470 AbstractCegarLoop]: Abstraction has 17441 states and 57603 transitions. [2022-02-10 03:00:19,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:19,374 INFO L276 IsEmpty]: Start isEmpty. Operand 17441 states and 57603 transitions. [2022-02-10 03:00:19,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 03:00:19,404 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:19,404 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:19,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (465)] Ended with exit code 0 [2022-02-10 03:00:19,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 465 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable468 [2022-02-10 03:00:19,604 INFO L402 AbstractCegarLoop]: === Iteration 470 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:19,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:19,605 INFO L85 PathProgramCache]: Analyzing trace with hash -2031524501, now seen corresponding path program 464 times [2022-02-10 03:00:19,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:19,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49819956] [2022-02-10 03:00:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:19,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:19,847 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:19,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49819956] [2022-02-10 03:00:19,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49819956] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:19,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897531633] [2022-02-10 03:00:19,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:00:19,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:19,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:19,848 INFO L229 MonitoredProcess]: Starting monitored process 466 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:19,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (466)] Waiting until timeout for monitored process [2022-02-10 03:00:19,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:00:19,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:19,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-10 03:00:19,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:20,188 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:20,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:20,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897531633] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:20,618 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:20,618 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 34 [2022-02-10 03:00:20,618 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070268752] [2022-02-10 03:00:20,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:20,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 03:00:20,618 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:20,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 03:00:20,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1099, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:00:20,618 INFO L87 Difference]: Start difference. First operand 17441 states and 57603 transitions. Second operand has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:21,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:21,427 INFO L93 Difference]: Finished difference Result 17660 states and 57862 transitions. [2022-02-10 03:00:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 03:00:21,427 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 03:00:21,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:21,467 INFO L225 Difference]: With dead ends: 17660 [2022-02-10 03:00:21,468 INFO L226 Difference]: Without dead ends: 17656 [2022-02-10 03:00:21,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 32 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=1668, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 03:00:21,468 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 168 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:21,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 697 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:00:21,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17656 states. [2022-02-10 03:00:21,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17656 to 17441. [2022-02-10 03:00:21,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17441 states, 17440 states have (on average 3.3029243119266054) internal successors, (57603), 17440 states have internal predecessors, (57603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:21,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17441 states to 17441 states and 57603 transitions. [2022-02-10 03:00:21,934 INFO L78 Accepts]: Start accepts. Automaton has 17441 states and 57603 transitions. Word has length 27 [2022-02-10 03:00:21,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:21,934 INFO L470 AbstractCegarLoop]: Abstraction has 17441 states and 57603 transitions. [2022-02-10 03:00:21,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:21,934 INFO L276 IsEmpty]: Start isEmpty. Operand 17441 states and 57603 transitions. [2022-02-10 03:00:21,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:00:21,963 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:21,963 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:21,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (466)] Ended with exit code 0 [2022-02-10 03:00:22,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable469,466 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:22,163 INFO L402 AbstractCegarLoop]: === Iteration 471 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:22,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:22,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1430044277, now seen corresponding path program 465 times [2022-02-10 03:00:22,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:22,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547935775] [2022-02-10 03:00:22,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:22,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:22,269 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:22,269 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:22,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547935775] [2022-02-10 03:00:22,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547935775] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:22,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935619308] [2022-02-10 03:00:22,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:00:22,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:22,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:22,270 INFO L229 MonitoredProcess]: Starting monitored process 467 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:22,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (467)] Waiting until timeout for monitored process [2022-02-10 03:00:22,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 03:00:22,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:22,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 03:00:22,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:22,444 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:22,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:22,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935619308] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:22,490 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:22,490 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 27 [2022-02-10 03:00:22,491 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164207639] [2022-02-10 03:00:22,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:22,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:00:22,491 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:22,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:00:22,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:00:22,491 INFO L87 Difference]: Start difference. First operand 17441 states and 57603 transitions. Second operand has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:22,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:22,775 INFO L93 Difference]: Finished difference Result 19795 states and 64894 transitions. [2022-02-10 03:00:22,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 03:00:22,775 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:00:22,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:22,819 INFO L225 Difference]: With dead ends: 19795 [2022-02-10 03:00:22,819 INFO L226 Difference]: Without dead ends: 19785 [2022-02-10 03:00:22,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=483, Invalid=1497, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 03:00:22,820 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 86 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:22,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 106 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:00:22,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19785 states. [2022-02-10 03:00:23,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19785 to 17438. [2022-02-10 03:00:23,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17438 states, 17437 states have (on average 3.303263176005047) internal successors, (57599), 17437 states have internal predecessors, (57599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17438 states to 17438 states and 57599 transitions. [2022-02-10 03:00:23,198 INFO L78 Accepts]: Start accepts. Automaton has 17438 states and 57599 transitions. Word has length 28 [2022-02-10 03:00:23,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:23,198 INFO L470 AbstractCegarLoop]: Abstraction has 17438 states and 57599 transitions. [2022-02-10 03:00:23,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:23,198 INFO L276 IsEmpty]: Start isEmpty. Operand 17438 states and 57599 transitions. [2022-02-10 03:00:23,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:00:23,226 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:23,226 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:23,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (467)] Ended with exit code 0 [2022-02-10 03:00:23,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable470,467 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:23,426 INFO L402 AbstractCegarLoop]: === Iteration 472 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:23,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:23,427 INFO L85 PathProgramCache]: Analyzing trace with hash 447899215, now seen corresponding path program 466 times [2022-02-10 03:00:23,427 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:23,427 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534329832] [2022-02-10 03:00:23,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:23,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:23,532 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:23,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:23,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534329832] [2022-02-10 03:00:23,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534329832] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:23,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963342291] [2022-02-10 03:00:23,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:00:23,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:23,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:23,534 INFO L229 MonitoredProcess]: Starting monitored process 468 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:23,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (468)] Waiting until timeout for monitored process [2022-02-10 03:00:23,560 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:00:23,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:23,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 03:00:23,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:23,682 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:23,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:23,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963342291] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:23,733 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:23,733 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 27 [2022-02-10 03:00:23,733 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293706144] [2022-02-10 03:00:23,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:23,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:00:23,733 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:23,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:00:23,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:00:23,733 INFO L87 Difference]: Start difference. First operand 17438 states and 57599 transitions. Second operand has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:23,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:23,984 INFO L93 Difference]: Finished difference Result 20105 states and 65812 transitions. [2022-02-10 03:00:23,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 03:00:23,985 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:00:23,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:24,032 INFO L225 Difference]: With dead ends: 20105 [2022-02-10 03:00:24,032 INFO L226 Difference]: Without dead ends: 20105 [2022-02-10 03:00:24,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=386, Invalid=874, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:00:24,033 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 85 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:24,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 90 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:00:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20105 states. [2022-02-10 03:00:24,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20105 to 17623. [2022-02-10 03:00:24,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17623 states, 17622 states have (on average 3.299965951651345) internal successors, (58152), 17622 states have internal predecessors, (58152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:24,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17623 states to 17623 states and 58152 transitions. [2022-02-10 03:00:24,481 INFO L78 Accepts]: Start accepts. Automaton has 17623 states and 58152 transitions. Word has length 28 [2022-02-10 03:00:24,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:24,481 INFO L470 AbstractCegarLoop]: Abstraction has 17623 states and 58152 transitions. [2022-02-10 03:00:24,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:24,482 INFO L276 IsEmpty]: Start isEmpty. Operand 17623 states and 58152 transitions. [2022-02-10 03:00:24,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:00:24,508 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:24,508 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:24,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (468)] Ended with exit code 0 [2022-02-10 03:00:24,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 468 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable471 [2022-02-10 03:00:24,709 INFO L402 AbstractCegarLoop]: === Iteration 473 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:24,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:24,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1326757775, now seen corresponding path program 467 times [2022-02-10 03:00:24,709 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:24,709 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268270629] [2022-02-10 03:00:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:24,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:24,812 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:24,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268270629] [2022-02-10 03:00:24,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268270629] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:24,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445850723] [2022-02-10 03:00:24,812 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:00:24,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:24,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:24,813 INFO L229 MonitoredProcess]: Starting monitored process 469 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:24,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (469)] Waiting until timeout for monitored process [2022-02-10 03:00:24,841 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 03:00:24,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:24,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 03:00:24,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:25,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:25,045 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445850723] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:25,045 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:25,045 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 28 [2022-02-10 03:00:25,045 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430208336] [2022-02-10 03:00:25,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:25,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:00:25,045 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:25,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:00:25,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:00:25,046 INFO L87 Difference]: Start difference. First operand 17623 states and 58152 transitions. Second operand has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:26,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:26,395 INFO L93 Difference]: Finished difference Result 25621 states and 83559 transitions. [2022-02-10 03:00:26,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-02-10 03:00:26,395 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:00:26,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:26,466 INFO L225 Difference]: With dead ends: 25621 [2022-02-10 03:00:26,466 INFO L226 Difference]: Without dead ends: 25614 [2022-02-10 03:00:26,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3940, Invalid=8942, Unknown=0, NotChecked=0, Total=12882 [2022-02-10 03:00:26,468 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 272 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:26,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 140 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:00:26,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25614 states. [2022-02-10 03:00:26,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25614 to 23339. [2022-02-10 03:00:26,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23339 states, 23338 states have (on average 3.3171651384008913) internal successors, (77416), 23338 states have internal predecessors, (77416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:27,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23339 states to 23339 states and 77416 transitions. [2022-02-10 03:00:27,009 INFO L78 Accepts]: Start accepts. Automaton has 23339 states and 77416 transitions. Word has length 28 [2022-02-10 03:00:27,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:27,009 INFO L470 AbstractCegarLoop]: Abstraction has 23339 states and 77416 transitions. [2022-02-10 03:00:27,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:27,010 INFO L276 IsEmpty]: Start isEmpty. Operand 23339 states and 77416 transitions. [2022-02-10 03:00:27,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:00:27,044 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:27,044 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:27,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (469)] Ended with exit code 0 [2022-02-10 03:00:27,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable472,469 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:27,244 INFO L402 AbstractCegarLoop]: === Iteration 474 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:27,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:27,244 INFO L85 PathProgramCache]: Analyzing trace with hash -667707381, now seen corresponding path program 468 times [2022-02-10 03:00:27,245 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:27,245 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826654454] [2022-02-10 03:00:27,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:27,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:27,347 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:27,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826654454] [2022-02-10 03:00:27,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826654454] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:27,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624344969] [2022-02-10 03:00:27,348 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:00:27,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:27,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:27,349 INFO L229 MonitoredProcess]: Starting monitored process 470 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:27,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (470)] Waiting until timeout for monitored process [2022-02-10 03:00:27,377 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 03:00:27,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:27,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 03:00:27,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:27,537 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:27,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:27,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624344969] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:27,582 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:27,582 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 28 [2022-02-10 03:00:27,582 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105639170] [2022-02-10 03:00:27,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:27,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:00:27,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:27,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:00:27,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:00:27,582 INFO L87 Difference]: Start difference. First operand 23339 states and 77416 transitions. Second operand has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:28,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:28,787 INFO L93 Difference]: Finished difference Result 24707 states and 80597 transitions. [2022-02-10 03:00:28,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-10 03:00:28,787 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:00:28,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:28,846 INFO L225 Difference]: With dead ends: 24707 [2022-02-10 03:00:28,846 INFO L226 Difference]: Without dead ends: 24703 [2022-02-10 03:00:28,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3141 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2792, Invalid=7308, Unknown=0, NotChecked=0, Total=10100 [2022-02-10 03:00:28,848 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 227 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:28,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 206 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:00:28,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24703 states. [2022-02-10 03:00:29,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24703 to 20826. [2022-02-10 03:00:29,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20826 states, 20825 states have (on average 3.2850420168067225) internal successors, (68411), 20825 states have internal predecessors, (68411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20826 states to 20826 states and 68411 transitions. [2022-02-10 03:00:29,358 INFO L78 Accepts]: Start accepts. Automaton has 20826 states and 68411 transitions. Word has length 28 [2022-02-10 03:00:29,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:29,358 INFO L470 AbstractCegarLoop]: Abstraction has 20826 states and 68411 transitions. [2022-02-10 03:00:29,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:29,359 INFO L276 IsEmpty]: Start isEmpty. Operand 20826 states and 68411 transitions. [2022-02-10 03:00:29,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:00:29,390 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:29,390 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:29,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (470)] Ended with exit code 0 [2022-02-10 03:00:29,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable473,470 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:29,591 INFO L402 AbstractCegarLoop]: === Iteration 475 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:29,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:29,591 INFO L85 PathProgramCache]: Analyzing trace with hash -33358965, now seen corresponding path program 469 times [2022-02-10 03:00:29,591 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:29,591 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479485707] [2022-02-10 03:00:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:29,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:29,695 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:29,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479485707] [2022-02-10 03:00:29,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479485707] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:29,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923634158] [2022-02-10 03:00:29,695 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:00:29,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:29,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:29,696 INFO L229 MonitoredProcess]: Starting monitored process 471 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:29,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (471)] Waiting until timeout for monitored process [2022-02-10 03:00:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:29,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 03:00:29,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:29,873 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:29,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:29,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923634158] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:29,918 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:29,918 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 28 [2022-02-10 03:00:29,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834595850] [2022-02-10 03:00:29,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:29,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:00:29,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:29,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:00:29,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:00:29,919 INFO L87 Difference]: Start difference. First operand 20826 states and 68411 transitions. Second operand has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:31,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:31,424 INFO L93 Difference]: Finished difference Result 23521 states and 76107 transitions. [2022-02-10 03:00:31,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-10 03:00:31,425 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:00:31,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:31,479 INFO L225 Difference]: With dead ends: 23521 [2022-02-10 03:00:31,480 INFO L226 Difference]: Without dead ends: 23521 [2022-02-10 03:00:31,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3502 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=4492, Invalid=8164, Unknown=0, NotChecked=0, Total=12656 [2022-02-10 03:00:31,481 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 238 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:31,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 303 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:00:31,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23521 states. [2022-02-10 03:00:31,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23521 to 22313. [2022-02-10 03:00:31,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22313 states, 22312 states have (on average 3.2948189315166725) internal successors, (73514), 22312 states have internal predecessors, (73514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22313 states to 22313 states and 73514 transitions. [2022-02-10 03:00:32,047 INFO L78 Accepts]: Start accepts. Automaton has 22313 states and 73514 transitions. Word has length 28 [2022-02-10 03:00:32,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:32,047 INFO L470 AbstractCegarLoop]: Abstraction has 22313 states and 73514 transitions. [2022-02-10 03:00:32,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:32,047 INFO L276 IsEmpty]: Start isEmpty. Operand 22313 states and 73514 transitions. [2022-02-10 03:00:32,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:00:32,078 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:32,078 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:32,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (471)] Ended with exit code 0 [2022-02-10 03:00:32,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable474,471 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:32,279 INFO L402 AbstractCegarLoop]: === Iteration 476 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:32,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:32,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1250210387, now seen corresponding path program 470 times [2022-02-10 03:00:32,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:32,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133111686] [2022-02-10 03:00:32,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:32,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:32,385 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:32,385 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:32,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133111686] [2022-02-10 03:00:32,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133111686] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:32,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008913748] [2022-02-10 03:00:32,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:00:32,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:32,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:32,386 INFO L229 MonitoredProcess]: Starting monitored process 472 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:32,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (472)] Waiting until timeout for monitored process [2022-02-10 03:00:32,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:00:32,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:32,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 03:00:32,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:32,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:32,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008913748] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:32,608 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:32,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 28 [2022-02-10 03:00:32,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497027726] [2022-02-10 03:00:32,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:32,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:00:32,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:32,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:00:32,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=510, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:00:32,608 INFO L87 Difference]: Start difference. First operand 22313 states and 73514 transitions. Second operand has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:34,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:34,249 INFO L93 Difference]: Finished difference Result 22746 states and 74183 transitions. [2022-02-10 03:00:34,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-02-10 03:00:34,250 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:00:34,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:34,300 INFO L225 Difference]: With dead ends: 22746 [2022-02-10 03:00:34,300 INFO L226 Difference]: Without dead ends: 22744 [2022-02-10 03:00:34,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5559 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=6527, Invalid=12379, Unknown=0, NotChecked=0, Total=18906 [2022-02-10 03:00:34,303 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 182 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:34,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 260 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:00:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22744 states. [2022-02-10 03:00:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22744 to 19450. [2022-02-10 03:00:34,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19450 states, 19449 states have (on average 3.2693197593706618) internal successors, (63585), 19449 states have internal predecessors, (63585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19450 states to 19450 states and 63585 transitions. [2022-02-10 03:00:34,840 INFO L78 Accepts]: Start accepts. Automaton has 19450 states and 63585 transitions. Word has length 28 [2022-02-10 03:00:34,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:34,840 INFO L470 AbstractCegarLoop]: Abstraction has 19450 states and 63585 transitions. [2022-02-10 03:00:34,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:34,840 INFO L276 IsEmpty]: Start isEmpty. Operand 19450 states and 63585 transitions. [2022-02-10 03:00:34,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:00:34,868 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:34,868 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:34,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (472)] Ended with exit code 0 [2022-02-10 03:00:35,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 472 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable475 [2022-02-10 03:00:35,068 INFO L402 AbstractCegarLoop]: === Iteration 477 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:35,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:35,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1928382223, now seen corresponding path program 471 times [2022-02-10 03:00:35,069 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:35,069 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428058111] [2022-02-10 03:00:35,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:35,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:35,171 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:35,171 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:35,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428058111] [2022-02-10 03:00:35,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428058111] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:35,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071462036] [2022-02-10 03:00:35,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:00:35,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:35,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:35,172 INFO L229 MonitoredProcess]: Starting monitored process 473 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:35,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (473)] Waiting until timeout for monitored process [2022-02-10 03:00:35,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 03:00:35,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:35,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 03:00:35,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:35,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:35,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071462036] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:35,418 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:35,418 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 28 [2022-02-10 03:00:35,418 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725577592] [2022-02-10 03:00:35,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:35,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:00:35,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:35,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:00:35,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:00:35,419 INFO L87 Difference]: Start difference. First operand 19450 states and 63585 transitions. Second operand has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:36,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:36,409 INFO L93 Difference]: Finished difference Result 21458 states and 68997 transitions. [2022-02-10 03:00:36,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-10 03:00:36,410 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:00:36,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:36,456 INFO L225 Difference]: With dead ends: 21458 [2022-02-10 03:00:36,456 INFO L226 Difference]: Without dead ends: 21454 [2022-02-10 03:00:36,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2352, Invalid=6578, Unknown=0, NotChecked=0, Total=8930 [2022-02-10 03:00:36,457 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 221 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:36,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 131 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:00:36,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21454 states. [2022-02-10 03:00:36,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21454 to 19840. [2022-02-10 03:00:36,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19840 states, 19839 states have (on average 3.268914763848984) internal successors, (64852), 19839 states have internal predecessors, (64852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:36,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19840 states to 19840 states and 64852 transitions. [2022-02-10 03:00:36,896 INFO L78 Accepts]: Start accepts. Automaton has 19840 states and 64852 transitions. Word has length 28 [2022-02-10 03:00:36,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:36,896 INFO L470 AbstractCegarLoop]: Abstraction has 19840 states and 64852 transitions. [2022-02-10 03:00:36,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:36,896 INFO L276 IsEmpty]: Start isEmpty. Operand 19840 states and 64852 transitions. [2022-02-10 03:00:36,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:00:36,925 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:36,925 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:36,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (473)] Ended with exit code 0 [2022-02-10 03:00:37,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 473 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable476 [2022-02-10 03:00:37,126 INFO L402 AbstractCegarLoop]: === Iteration 478 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:37,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:37,126 INFO L85 PathProgramCache]: Analyzing trace with hash 802781323, now seen corresponding path program 472 times [2022-02-10 03:00:37,126 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:37,126 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446646875] [2022-02-10 03:00:37,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:37,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:37,229 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:37,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446646875] [2022-02-10 03:00:37,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446646875] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:37,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016645250] [2022-02-10 03:00:37,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:00:37,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:37,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:37,230 INFO L229 MonitoredProcess]: Starting monitored process 474 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:37,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (474)] Waiting until timeout for monitored process [2022-02-10 03:00:37,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:00:37,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:37,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 03:00:37,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:37,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:37,460 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:37,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016645250] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:37,460 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:37,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 28 [2022-02-10 03:00:37,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930640199] [2022-02-10 03:00:37,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:37,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:00:37,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:37,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:00:37,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:00:37,461 INFO L87 Difference]: Start difference. First operand 19840 states and 64852 transitions. Second operand has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:38,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:38,383 INFO L93 Difference]: Finished difference Result 22246 states and 71769 transitions. [2022-02-10 03:00:38,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-10 03:00:38,383 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:00:38,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:38,529 INFO L225 Difference]: With dead ends: 22246 [2022-02-10 03:00:38,530 INFO L226 Difference]: Without dead ends: 22241 [2022-02-10 03:00:38,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2438 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1961, Invalid=5871, Unknown=0, NotChecked=0, Total=7832 [2022-02-10 03:00:38,530 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 146 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:38,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 173 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:00:38,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22241 states. [2022-02-10 03:00:38,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22241 to 20398. [2022-02-10 03:00:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20398 states, 20397 states have (on average 3.276266117566309) internal successors, (66826), 20397 states have internal predecessors, (66826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:38,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20398 states to 20398 states and 66826 transitions. [2022-02-10 03:00:38,933 INFO L78 Accepts]: Start accepts. Automaton has 20398 states and 66826 transitions. Word has length 28 [2022-02-10 03:00:38,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:38,933 INFO L470 AbstractCegarLoop]: Abstraction has 20398 states and 66826 transitions. [2022-02-10 03:00:38,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:38,933 INFO L276 IsEmpty]: Start isEmpty. Operand 20398 states and 66826 transitions. [2022-02-10 03:00:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:00:38,964 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:38,964 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:38,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (474)] Forceful destruction successful, exit code 0 [2022-02-10 03:00:39,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 474 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable477 [2022-02-10 03:00:39,164 INFO L402 AbstractCegarLoop]: === Iteration 479 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:39,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:39,165 INFO L85 PathProgramCache]: Analyzing trace with hash 268891791, now seen corresponding path program 473 times [2022-02-10 03:00:39,165 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:39,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381107887] [2022-02-10 03:00:39,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:39,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 20 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:39,270 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:39,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381107887] [2022-02-10 03:00:39,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381107887] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:39,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550897362] [2022-02-10 03:00:39,270 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:00:39,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:39,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:39,271 INFO L229 MonitoredProcess]: Starting monitored process 475 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:39,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (475)] Waiting until timeout for monitored process [2022-02-10 03:00:39,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 03:00:39,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:39,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 03:00:39,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 20 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:39,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:39,499 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 20 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:39,500 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550897362] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:39,500 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:39,500 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 28 [2022-02-10 03:00:39,500 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124091273] [2022-02-10 03:00:39,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:39,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:00:39,500 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:39,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:00:39,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:00:39,500 INFO L87 Difference]: Start difference. First operand 20398 states and 66826 transitions. Second operand has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:40,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:40,340 INFO L93 Difference]: Finished difference Result 24014 states and 78123 transitions. [2022-02-10 03:00:40,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-10 03:00:40,340 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:00:40,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:40,404 INFO L225 Difference]: With dead ends: 24014 [2022-02-10 03:00:40,405 INFO L226 Difference]: Without dead ends: 24008 [2022-02-10 03:00:40,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1620, Invalid=5186, Unknown=0, NotChecked=0, Total=6806 [2022-02-10 03:00:40,406 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 160 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:40,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 156 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:00:40,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24008 states. [2022-02-10 03:00:40,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24008 to 20785. [2022-02-10 03:00:40,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20785 states, 20784 states have (on average 3.280263664357198) internal successors, (68177), 20784 states have internal predecessors, (68177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20785 states to 20785 states and 68177 transitions. [2022-02-10 03:00:41,015 INFO L78 Accepts]: Start accepts. Automaton has 20785 states and 68177 transitions. Word has length 28 [2022-02-10 03:00:41,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:41,015 INFO L470 AbstractCegarLoop]: Abstraction has 20785 states and 68177 transitions. [2022-02-10 03:00:41,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:41,015 INFO L276 IsEmpty]: Start isEmpty. Operand 20785 states and 68177 transitions. [2022-02-10 03:00:41,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:00:41,045 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:41,045 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:41,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (475)] Ended with exit code 0 [2022-02-10 03:00:41,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 475 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable478 [2022-02-10 03:00:41,246 INFO L402 AbstractCegarLoop]: === Iteration 480 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:41,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:41,246 INFO L85 PathProgramCache]: Analyzing trace with hash 898185483, now seen corresponding path program 474 times [2022-02-10 03:00:41,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:41,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788461532] [2022-02-10 03:00:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:41,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:41,348 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:41,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788461532] [2022-02-10 03:00:41,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788461532] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:41,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842650869] [2022-02-10 03:00:41,349 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:00:41,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:41,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:41,350 INFO L229 MonitoredProcess]: Starting monitored process 476 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:41,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (476)] Waiting until timeout for monitored process [2022-02-10 03:00:41,377 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 03:00:41,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:41,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 03:00:41,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:41,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:41,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842650869] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:41,577 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:41,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 28 [2022-02-10 03:00:41,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075324283] [2022-02-10 03:00:41,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:41,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:00:41,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:41,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:00:41,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:00:41,578 INFO L87 Difference]: Start difference. First operand 20785 states and 68177 transitions. Second operand has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:42,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:42,353 INFO L93 Difference]: Finished difference Result 26608 states and 87302 transitions. [2022-02-10 03:00:42,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 03:00:42,353 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:00:42,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:42,428 INFO L225 Difference]: With dead ends: 26608 [2022-02-10 03:00:42,428 INFO L226 Difference]: Without dead ends: 26601 [2022-02-10 03:00:42,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1776 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1330, Invalid=4522, Unknown=0, NotChecked=0, Total=5852 [2022-02-10 03:00:42,429 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 189 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:42,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 124 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:00:42,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26601 states. [2022-02-10 03:00:42,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26601 to 21011. [2022-02-10 03:00:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21011 states, 21010 states have (on average 3.281151832460733) internal successors, (68937), 21010 states have internal predecessors, (68937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:42,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21011 states to 21011 states and 68937 transitions. [2022-02-10 03:00:42,977 INFO L78 Accepts]: Start accepts. Automaton has 21011 states and 68937 transitions. Word has length 28 [2022-02-10 03:00:42,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:42,977 INFO L470 AbstractCegarLoop]: Abstraction has 21011 states and 68937 transitions. [2022-02-10 03:00:42,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:42,977 INFO L276 IsEmpty]: Start isEmpty. Operand 21011 states and 68937 transitions. [2022-02-10 03:00:43,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:00:43,008 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:43,008 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:43,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (476)] Ended with exit code 0 [2022-02-10 03:00:43,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable479,476 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:43,209 INFO L402 AbstractCegarLoop]: === Iteration 481 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:43,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:43,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1068546545, now seen corresponding path program 475 times [2022-02-10 03:00:43,209 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:43,209 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767683881] [2022-02-10 03:00:43,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:43,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:43,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:43,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767683881] [2022-02-10 03:00:43,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767683881] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:43,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818990672] [2022-02-10 03:00:43,312 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:00:43,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:43,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:43,314 INFO L229 MonitoredProcess]: Starting monitored process 477 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:43,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (477)] Waiting until timeout for monitored process [2022-02-10 03:00:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:43,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 03:00:43,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:43,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:43,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818990672] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:43,546 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:43,546 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 28 [2022-02-10 03:00:43,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560607629] [2022-02-10 03:00:43,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:43,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:00:43,547 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:43,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:00:43,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:00:43,547 INFO L87 Difference]: Start difference. First operand 21011 states and 68937 transitions. Second operand has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:44,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:44,364 INFO L93 Difference]: Finished difference Result 28270 states and 92895 transitions. [2022-02-10 03:00:44,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-10 03:00:44,365 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:00:44,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:44,438 INFO L225 Difference]: With dead ends: 28270 [2022-02-10 03:00:44,438 INFO L226 Difference]: Without dead ends: 28262 [2022-02-10 03:00:44,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1460 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1092, Invalid=3878, Unknown=0, NotChecked=0, Total=4970 [2022-02-10 03:00:44,438 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 106 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:44,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 140 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:00:44,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28262 states. [2022-02-10 03:00:44,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28262 to 21126. [2022-02-10 03:00:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21126 states, 21125 states have (on average 3.28) internal successors, (69290), 21125 states have internal predecessors, (69290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:45,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21126 states to 21126 states and 69290 transitions. [2022-02-10 03:00:45,037 INFO L78 Accepts]: Start accepts. Automaton has 21126 states and 69290 transitions. Word has length 28 [2022-02-10 03:00:45,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:45,037 INFO L470 AbstractCegarLoop]: Abstraction has 21126 states and 69290 transitions. [2022-02-10 03:00:45,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:45,037 INFO L276 IsEmpty]: Start isEmpty. Operand 21126 states and 69290 transitions. [2022-02-10 03:00:45,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:00:45,066 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:45,067 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:45,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (477)] Ended with exit code 0 [2022-02-10 03:00:45,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 477 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable480 [2022-02-10 03:00:45,267 INFO L402 AbstractCegarLoop]: === Iteration 482 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:45,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:45,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1907697269, now seen corresponding path program 476 times [2022-02-10 03:00:45,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:45,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654021986] [2022-02-10 03:00:45,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:45,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:45,371 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:45,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654021986] [2022-02-10 03:00:45,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654021986] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:45,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069974214] [2022-02-10 03:00:45,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:00:45,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:45,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:45,373 INFO L229 MonitoredProcess]: Starting monitored process 478 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:45,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (478)] Waiting until timeout for monitored process [2022-02-10 03:00:45,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:00:45,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:45,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 03:00:45,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:45,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:45,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069974214] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:45,605 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:45,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 28 [2022-02-10 03:00:45,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066663706] [2022-02-10 03:00:45,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:45,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:00:45,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:45,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:00:45,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:00:45,606 INFO L87 Difference]: Start difference. First operand 21126 states and 69290 transitions. Second operand has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:46,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:46,223 INFO L93 Difference]: Finished difference Result 27762 states and 90723 transitions. [2022-02-10 03:00:46,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-10 03:00:46,224 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:00:46,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:46,293 INFO L225 Difference]: With dead ends: 27762 [2022-02-10 03:00:46,294 INFO L226 Difference]: Without dead ends: 27753 [2022-02-10 03:00:46,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=907, Invalid=3253, Unknown=0, NotChecked=0, Total=4160 [2022-02-10 03:00:46,294 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 70 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:46,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 115 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:00:46,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27753 states. [2022-02-10 03:00:46,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27753 to 21177. [2022-02-10 03:00:46,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21177 states, 21176 states have (on average 3.277767283717416) internal successors, (69410), 21176 states have internal predecessors, (69410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:46,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21177 states to 21177 states and 69410 transitions. [2022-02-10 03:00:46,983 INFO L78 Accepts]: Start accepts. Automaton has 21177 states and 69410 transitions. Word has length 28 [2022-02-10 03:00:46,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:46,983 INFO L470 AbstractCegarLoop]: Abstraction has 21177 states and 69410 transitions. [2022-02-10 03:00:46,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:46,983 INFO L276 IsEmpty]: Start isEmpty. Operand 21177 states and 69410 transitions. [2022-02-10 03:00:47,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:00:47,015 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:47,015 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:47,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (478)] Ended with exit code 0 [2022-02-10 03:00:47,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable481,478 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:47,215 INFO L402 AbstractCegarLoop]: === Iteration 483 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:47,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:47,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1465169743, now seen corresponding path program 477 times [2022-02-10 03:00:47,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:47,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060347856] [2022-02-10 03:00:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:47,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:47,312 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:47,313 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:47,313 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060347856] [2022-02-10 03:00:47,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060347856] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:47,313 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962414261] [2022-02-10 03:00:47,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:00:47,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:47,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:47,314 INFO L229 MonitoredProcess]: Starting monitored process 479 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:47,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (479)] Waiting until timeout for monitored process [2022-02-10 03:00:47,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 03:00:47,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:47,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 03:00:47,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:47,500 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:47,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:47,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962414261] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:47,546 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:47,546 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 18] total 28 [2022-02-10 03:00:47,546 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369889463] [2022-02-10 03:00:47,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:47,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:00:47,546 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:47,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:00:47,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=523, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:00:47,547 INFO L87 Difference]: Start difference. First operand 21177 states and 69410 transitions. Second operand has 28 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:49,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:49,114 INFO L93 Difference]: Finished difference Result 24282 states and 77849 transitions. [2022-02-10 03:00:49,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-10 03:00:49,115 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:00:49,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:49,167 INFO L225 Difference]: With dead ends: 24282 [2022-02-10 03:00:49,167 INFO L226 Difference]: Without dead ends: 24270 [2022-02-10 03:00:49,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3741 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=4741, Invalid=8831, Unknown=0, NotChecked=0, Total=13572 [2022-02-10 03:00:49,169 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 273 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:49,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 302 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:00:49,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24270 states. [2022-02-10 03:00:49,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24270 to 22752. [2022-02-10 03:00:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22752 states, 22751 states have (on average 3.2888664234539142) internal successors, (74825), 22751 states have internal predecessors, (74825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:49,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22752 states to 22752 states and 74825 transitions. [2022-02-10 03:00:49,677 INFO L78 Accepts]: Start accepts. Automaton has 22752 states and 74825 transitions. Word has length 28 [2022-02-10 03:00:49,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:49,677 INFO L470 AbstractCegarLoop]: Abstraction has 22752 states and 74825 transitions. [2022-02-10 03:00:49,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:49,677 INFO L276 IsEmpty]: Start isEmpty. Operand 22752 states and 74825 transitions. [2022-02-10 03:00:49,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:00:49,709 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:49,709 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:49,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (479)] Ended with exit code 0 [2022-02-10 03:00:49,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable482,479 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:49,910 INFO L402 AbstractCegarLoop]: === Iteration 484 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:49,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:49,910 INFO L85 PathProgramCache]: Analyzing trace with hash 248318321, now seen corresponding path program 478 times [2022-02-10 03:00:49,910 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:49,910 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198223976] [2022-02-10 03:00:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:49,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 23 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:00:50,012 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:50,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198223976] [2022-02-10 03:00:50,012 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198223976] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:50,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029920038] [2022-02-10 03:00:50,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:00:50,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:50,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:50,013 INFO L229 MonitoredProcess]: Starting monitored process 480 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:50,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (480)] Waiting until timeout for monitored process [2022-02-10 03:00:50,041 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:00:50,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:50,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 03:00:50,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:50,201 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 35 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:50,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:50,246 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 23 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:00:50,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029920038] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:50,246 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:50,246 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 18] total 28 [2022-02-10 03:00:50,246 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87107578] [2022-02-10 03:00:50,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:50,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:00:50,246 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:50,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:00:50,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=516, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:00:50,247 INFO L87 Difference]: Start difference. First operand 22752 states and 74825 transitions. Second operand has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:52,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:52,148 INFO L93 Difference]: Finished difference Result 23512 states and 75880 transitions. [2022-02-10 03:00:52,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-02-10 03:00:52,148 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:00:52,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:52,201 INFO L225 Difference]: With dead ends: 23512 [2022-02-10 03:00:52,202 INFO L226 Difference]: Without dead ends: 23509 [2022-02-10 03:00:52,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5372 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=6106, Invalid=12526, Unknown=0, NotChecked=0, Total=18632 [2022-02-10 03:00:52,202 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 261 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:52,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 288 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:00:52,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23509 states. [2022-02-10 03:00:52,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23509 to 18798. [2022-02-10 03:00:52,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18798 states, 18797 states have (on average 3.2520082991966803) internal successors, (61128), 18797 states have internal predecessors, (61128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:52,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18798 states to 18798 states and 61128 transitions. [2022-02-10 03:00:52,617 INFO L78 Accepts]: Start accepts. Automaton has 18798 states and 61128 transitions. Word has length 28 [2022-02-10 03:00:52,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:52,617 INFO L470 AbstractCegarLoop]: Abstraction has 18798 states and 61128 transitions. [2022-02-10 03:00:52,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:52,617 INFO L276 IsEmpty]: Start isEmpty. Operand 18798 states and 61128 transitions. [2022-02-10 03:00:52,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:00:52,649 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:52,649 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:52,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (480)] Forceful destruction successful, exit code 0 [2022-02-10 03:00:52,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable483,480 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:52,850 INFO L402 AbstractCegarLoop]: === Iteration 485 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:52,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:52,850 INFO L85 PathProgramCache]: Analyzing trace with hash 786173899, now seen corresponding path program 479 times [2022-02-10 03:00:52,850 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:52,850 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066422474] [2022-02-10 03:00:52,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:52,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:52,956 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:52,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066422474] [2022-02-10 03:00:52,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066422474] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:52,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036346244] [2022-02-10 03:00:52,956 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:00:52,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:52,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:52,957 INFO L229 MonitoredProcess]: Starting monitored process 481 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:52,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (481)] Waiting until timeout for monitored process [2022-02-10 03:00:52,986 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-02-10 03:00:52,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:52,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 03:00:52,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:53,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:53,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036346244] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:53,192 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:53,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2022-02-10 03:00:53,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420068503] [2022-02-10 03:00:53,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:53,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 03:00:53,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:53,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 03:00:53,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2022-02-10 03:00:53,192 INFO L87 Difference]: Start difference. First operand 18798 states and 61128 transitions. Second operand has 29 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:54,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:00:54,810 INFO L93 Difference]: Finished difference Result 19487 states and 62134 transitions. [2022-02-10 03:00:54,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-02-10 03:00:54,810 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:00:54,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:00:54,849 INFO L225 Difference]: With dead ends: 19487 [2022-02-10 03:00:54,849 INFO L226 Difference]: Without dead ends: 19483 [2022-02-10 03:00:54,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5924 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=6438, Invalid=13022, Unknown=0, NotChecked=0, Total=19460 [2022-02-10 03:00:54,852 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 185 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:54,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 231 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:00:54,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19483 states. [2022-02-10 03:00:55,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19483 to 18798. [2022-02-10 03:00:55,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18798 states, 18797 states have (on average 3.25030589987764) internal successors, (61096), 18797 states have internal predecessors, (61096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18798 states to 18798 states and 61096 transitions. [2022-02-10 03:00:55,299 INFO L78 Accepts]: Start accepts. Automaton has 18798 states and 61096 transitions. Word has length 28 [2022-02-10 03:00:55,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:00:55,299 INFO L470 AbstractCegarLoop]: Abstraction has 18798 states and 61096 transitions. [2022-02-10 03:00:55,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:00:55,300 INFO L276 IsEmpty]: Start isEmpty. Operand 18798 states and 61096 transitions. [2022-02-10 03:00:55,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:00:55,333 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:00:55,333 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:00:55,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (481)] Ended with exit code 0 [2022-02-10 03:00:55,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable484,481 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:55,534 INFO L402 AbstractCegarLoop]: === Iteration 486 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:00:55,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:00:55,534 INFO L85 PathProgramCache]: Analyzing trace with hash 674919435, now seen corresponding path program 480 times [2022-02-10 03:00:55,534 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:00:55,534 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144908858] [2022-02-10 03:00:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:00:55,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:00:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:00:55,688 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 13 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:55,688 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:00:55,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144908858] [2022-02-10 03:00:55,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144908858] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:00:55,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545472694] [2022-02-10 03:00:55,689 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:00:55,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:00:55,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:00:55,690 INFO L229 MonitoredProcess]: Starting monitored process 482 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:00:55,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (482)] Waiting until timeout for monitored process [2022-02-10 03:00:55,719 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 03:00:55,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:00:55,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 03:00:55,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:00:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:55,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:00:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 13 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:00:55,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545472694] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:00:55,931 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:00:55,931 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 17] total 28 [2022-02-10 03:00:55,931 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514373541] [2022-02-10 03:00:55,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:00:55,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:00:55,931 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:00:55,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:00:55,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=527, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:00:55,931 INFO L87 Difference]: Start difference. First operand 18798 states and 61096 transitions. Second operand has 28 states, 28 states have (on average 1.5) internal successors, (42), 28 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-02-10 03:00:57,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-10 03:00:57,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3397 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=4310, Invalid=8122, Unknown=0, NotChecked=0, Total=12432 [2022-02-10 03:00:57,266 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 191 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:00:57,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 97 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:00:57,267 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-10 03:00:57,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (482)] Forceful destruction successful, exit code 0 [2022-02-10 03:00:57,292 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (482)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 03:00:57,311 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 03:00:57,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 482 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable485 [2022-02-10 03:00:57,468 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (18798states) and FLOYD_HOARE automaton (currently 102 states, 28 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 112 known predicates. [2022-02-10 03:00:57,469 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-10 03:00:57,469 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-10 03:00:57,471 INFO L732 BasicCegarLoop]: Path program histogram: [480, 2, 2, 2] [2022-02-10 03:00:57,473 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 03:00:57,473 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 03:00:57,475 INFO L202 PluginConnector]: Adding new model fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 03:00:57 BasicIcfg [2022-02-10 03:00:57,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 03:00:57,475 INFO L158 Benchmark]: Toolchain (without parser) took 783201.69ms. Allocated memory was 175.1MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 133.2MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 258.1MB. Max. memory is 8.0GB. [2022-02-10 03:00:57,475 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 175.1MB. Free memory is still 134.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 03:00:57,475 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.35ms. Allocated memory is still 175.1MB. Free memory was 133.1MB in the beginning and 131.6MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-10 03:00:57,475 INFO L158 Benchmark]: Boogie Preprocessor took 13.72ms. Allocated memory is still 175.1MB. Free memory was 131.6MB in the beginning and 130.7MB in the end (delta: 964.5kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 03:00:57,475 INFO L158 Benchmark]: RCFGBuilder took 209.77ms. Allocated memory is still 175.1MB. Free memory was 130.6MB in the beginning and 121.0MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-10 03:00:57,475 INFO L158 Benchmark]: TraceAbstraction took 782945.35ms. Allocated memory was 175.1MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 120.5MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 244.5MB. Max. memory is 8.0GB. [2022-02-10 03:00:57,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12ms. Allocated memory is still 175.1MB. Free memory is still 134.3MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.35ms. Allocated memory is still 175.1MB. Free memory was 133.1MB in the beginning and 131.6MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.72ms. Allocated memory is still 175.1MB. Free memory was 131.6MB in the beginning and 130.7MB in the end (delta: 964.5kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 209.77ms. Allocated memory is still 175.1MB. Free memory was 130.6MB in the beginning and 121.0MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 782945.35ms. Allocated memory was 175.1MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 120.5MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 244.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (18798states) and FLOYD_HOARE automaton (currently 102 states, 28 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 112 known predicates. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (18798states) and FLOYD_HOARE automaton (currently 102 states, 28 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 112 known predicates. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (18798states) and FLOYD_HOARE automaton (currently 102 states, 28 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 112 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 28 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 782.8s, OverallIterations: 486, TraceHistogramMax: 8, PathProgramHistogramMax: 480, EmptinessCheckTime: 4.6s, AutomataDifference: 293.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74716 SdHoareTripleChecker+Valid, 156.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74716 mSDsluCounter, 229042 SdHoareTripleChecker+Invalid, 131.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 322645 mSDsCounter, 16146 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 406898 IncrementalHoareTripleChecker+Invalid, 423044 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16146 mSolverCounterUnsat, 13263 mSDtfsCounter, 406898 mSolverCounterSat, 1.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38114 GetRequests, 13849 SyntacticMatches, 2320 SemanticMatches, 21944 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360427 ImplicationChecksByTransitivity, 287.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23339occurred in iteration=473, InterpolantAutomatonStates: 15054, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 64.7s AutomataMinimizationTime, 485 MinimizatonAttempts, 200594 StatesRemovedByMinimization, 484 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.7s SsaConstructionTime, 6.3s SatisfiabilityAnalysisTime, 304.3s InterpolantComputationTime, 22706 NumberOfCodeBlocks, 22706 NumberOfCodeBlocksAsserted, 2032 NumberOfCheckSat, 32577 ConstructedInterpolants, 0 QuantifiedInterpolants, 447621 SizeOfPredicates, 1637 NumberOfNonLiveVariables, 50854 ConjunctsInSsa, 17303 ConjunctsInUnsatCore, 1448 InterpolantComputations, 5 PerfectInterpolantSequences, 6948/51573 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown