/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 17:19:51,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 17:19:51,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 17:19:51,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 17:19:51,304 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-FA-NoLbe.epf [2022-03-01 17:19:51,333 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 17:19:51,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 17:19:51,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 17:19:51,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 17:19:51,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 17:19:51,334 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 17:19:51,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 17:19:51,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 17:19:51,335 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 17:19:51,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 17:19:51,335 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 17:19:51,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 17:19:51,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 17:19:51,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 17:19:51,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 17:19:51,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 17:19:51,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 17:19:51,336 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 17:19:51,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 17:19:51,336 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 17:19:51,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 17:19:51,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 17:19:51,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 17:19:51,337 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 17:19:51,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 17:19:51,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:19:51,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 17:19:51,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 17:19:51,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 17:19:51,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 17:19:51,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 17:19:51,338 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 17:19:51,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 17:19:51,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 17:19:51,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 17:19:51,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 17:19:51,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 17:19:51,579 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-01 17:19:51,582 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-01 17:19:51,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x3.wvr.bpl [2022-03-01 17:19:51,583 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x3.wvr.bpl' [2022-03-01 17:19:51,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 17:19:51,600 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-01 17:19:51,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 17:19:51,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 17:19:51,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 17:19:51,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:19:51" (1/1) ... [2022-03-01 17:19:51,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:19:51" (1/1) ... [2022-03-01 17:19:51,627 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-01 17:19:51,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 17:19:51,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 17:19:51,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 17:19:51,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 17:19:51,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:19:51" (1/1) ... [2022-03-01 17:19:51,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:19:51" (1/1) ... [2022-03-01 17:19:51,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:19:51" (1/1) ... [2022-03-01 17:19:51,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:19:51" (1/1) ... [2022-03-01 17:19:51,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:19:51" (1/1) ... [2022-03-01 17:19:51,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:19:51" (1/1) ... [2022-03-01 17:19:51,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:19:51" (1/1) ... [2022-03-01 17:19:51,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 17:19:51,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 17:19:51,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 17:19:51,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 17:19:51,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:19:51" (1/1) ... [2022-03-01 17:19:51,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:19:51,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:19:51,673 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) [2022-03-01 17:19:51,691 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 [2022-03-01 17:19:51,711 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-01 17:19:51,711 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-01 17:19:51,711 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-01 17:19:51,711 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-01 17:19:51,711 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-01 17:19:51,711 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-01 17:19:51,711 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-01 17:19:51,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 17:19:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 17:19:51,712 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-01 17:19:51,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-01 17:19:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-01 17:19:51,712 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-03-01 17:19:51,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-01 17:19:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-01 17:19:51,713 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 17:19:51,745 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 17:19:51,747 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 17:19:51,813 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 17:19:51,819 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 17:19:51,819 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-01 17:19:51,821 INFO L202 PluginConnector]: Adding new model exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:19:51 BoogieIcfgContainer [2022-03-01 17:19:51,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 17:19:51,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 17:19:51,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 17:19:51,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 17:19:51,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:19:51" (1/2) ... [2022-03-01 17:19:51,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8cc75c and model type exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 05:19:51, skipping insertion in model container [2022-03-01 17:19:51,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:19:51" (2/2) ... [2022-03-01 17:19:51,833 INFO L111 eAbstractionObserver]: Analyzing ICFG exp2x3.wvr.bpl [2022-03-01 17:19:51,837 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 17:19:51,838 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 17:19:51,838 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 17:19:51,838 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 17:19:51,907 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-03-01 17:19:51,944 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 17:19:51,949 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 17:19:51,950 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-03-01 17:19:51,958 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 33 transitions, 98 flow [2022-03-01 17:19:52,047 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 429 states, 428 states have (on average 3.8621495327102804) internal successors, (1653), 428 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:19:52,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 429 states, 428 states have (on average 3.8621495327102804) internal successors, (1653), 428 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:19:52,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-01 17:19:52,069 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:19:52,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:19:52,070 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:19:52,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:19:52,074 INFO L85 PathProgramCache]: Analyzing trace with hash 768516577, now seen corresponding path program 1 times [2022-03-01 17:19:52,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:19:52,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715367558] [2022-03-01 17:19:52,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:52,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:19:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:52,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:52,225 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:19:52,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715367558] [2022-03-01 17:19:52,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715367558] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:19:52,226 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:19:52,226 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 17:19:52,227 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353455180] [2022-03-01 17:19:52,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:19:52,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 17:19:52,232 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:19:52,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 17:19:52,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:19:52,280 INFO L87 Difference]: Start difference. First operand has 429 states, 428 states have (on average 3.8621495327102804) internal successors, (1653), 428 states have internal predecessors, (1653), 0 states have call successors, (0), 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 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 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) [2022-03-01 17:19:52,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:19:52,443 INFO L93 Difference]: Finished difference Result 854 states and 3302 transitions. [2022-03-01 17:19:52,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 17:19:52,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 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 19 [2022-03-01 17:19:52,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:19:52,480 INFO L225 Difference]: With dead ends: 854 [2022-03-01 17:19:52,481 INFO L226 Difference]: Without dead ends: 823 [2022-03-01 17:19:52,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:19:52,487 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 12 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 [2022-03-01 17:19:52,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 12 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:19:52,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2022-03-01 17:19:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 558. [2022-03-01 17:19:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 557 states have (on average 3.8545780969479355) internal successors, (2147), 557 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:19:52,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 2147 transitions. [2022-03-01 17:19:52,640 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 2147 transitions. Word has length 19 [2022-03-01 17:19:52,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:19:52,641 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 2147 transitions. [2022-03-01 17:19:52,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 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) [2022-03-01 17:19:52,641 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 2147 transitions. [2022-03-01 17:19:52,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:19:52,651 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:19:52,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:19:52,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 17:19:52,652 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:19:52,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:19:52,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1817520191, now seen corresponding path program 1 times [2022-03-01 17:19:52,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:19:52,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33856793] [2022-03-01 17:19:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:52,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:19:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:52,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:19:52,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33856793] [2022-03-01 17:19:52,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33856793] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:19:52,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163619363] [2022-03-01 17:19:52,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:52,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:19:52,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:19:52,741 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) [2022-03-01 17:19:52,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-01 17:19:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:52,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-01 17:19:52,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:19:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:52,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:19:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:52,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163619363] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:19:52,913 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:19:52,913 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-03-01 17:19:52,914 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686845853] [2022-03-01 17:19:52,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:19:52,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 17:19:52,915 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:19:52,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 17:19:52,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-01 17:19:52,916 INFO L87 Difference]: Start difference. First operand 558 states and 2147 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 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) [2022-03-01 17:19:53,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:19:53,054 INFO L93 Difference]: Finished difference Result 1354 states and 5079 transitions. [2022-03-01 17:19:53,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 17:19:53,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 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 21 [2022-03-01 17:19:53,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:19:53,066 INFO L225 Difference]: With dead ends: 1354 [2022-03-01 17:19:53,067 INFO L226 Difference]: Without dead ends: 1354 [2022-03-01 17:19:53,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:19:53,072 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 108 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:19:53,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 54 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:19:53,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2022-03-01 17:19:53,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 687. [2022-03-01 17:19:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 3.956268221574344) internal successors, (2714), 686 states have internal predecessors, (2714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:19:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 2714 transitions. [2022-03-01 17:19:53,121 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 2714 transitions. Word has length 21 [2022-03-01 17:19:53,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:19:53,122 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 2714 transitions. [2022-03-01 17:19:53,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 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) [2022-03-01 17:19:53,123 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 2714 transitions. [2022-03-01 17:19:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:19:53,126 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:19:53,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:19:53,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-01 17:19:53,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:19:53,353 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:19:53,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:19:53,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1420211201, now seen corresponding path program 1 times [2022-03-01 17:19:53,354 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:19:53,354 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80737033] [2022-03-01 17:19:53,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:53,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:19:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:53,414 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:19:53,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80737033] [2022-03-01 17:19:53,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80737033] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:19:53,415 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:19:53,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:19:53,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21544418] [2022-03-01 17:19:53,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:19:53,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 17:19:53,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:19:53,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 17:19:53,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:19:53,417 INFO L87 Difference]: Start difference. First operand 687 states and 2714 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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) [2022-03-01 17:19:53,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:19:53,477 INFO L93 Difference]: Finished difference Result 973 states and 3608 transitions. [2022-03-01 17:19:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 17:19:53,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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 21 [2022-03-01 17:19:53,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:19:53,485 INFO L225 Difference]: With dead ends: 973 [2022-03-01 17:19:53,486 INFO L226 Difference]: Without dead ends: 953 [2022-03-01 17:19:53,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:19:53,500 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 39 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:19:53,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 31 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:19:53,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2022-03-01 17:19:53,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 775. [2022-03-01 17:19:53,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 3.8359173126614987) internal successors, (2969), 774 states have internal predecessors, (2969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:19:53,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2969 transitions. [2022-03-01 17:19:53,532 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2969 transitions. Word has length 21 [2022-03-01 17:19:53,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:19:53,533 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 2969 transitions. [2022-03-01 17:19:53,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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) [2022-03-01 17:19:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2969 transitions. [2022-03-01 17:19:53,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:19:53,536 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:19:53,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:19:53,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 17:19:53,537 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:19:53,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:19:53,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1433190623, now seen corresponding path program 1 times [2022-03-01 17:19:53,539 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:19:53,539 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185272503] [2022-03-01 17:19:53,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:53,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:19:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:53,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:19:53,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185272503] [2022-03-01 17:19:53,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185272503] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:19:53,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192305389] [2022-03-01 17:19:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:53,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:19:53,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:19:53,603 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) [2022-03-01 17:19:53,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 17:19:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:53,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-01 17:19:53,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:19:53,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:53,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:19:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:53,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192305389] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:19:53,772 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:19:53,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-03-01 17:19:53,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574139588] [2022-03-01 17:19:53,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:19:53,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 17:19:53,774 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:19:53,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 17:19:53,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-01 17:19:53,775 INFO L87 Difference]: Start difference. First operand 775 states and 2969 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 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) [2022-03-01 17:19:53,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:19:53,907 INFO L93 Difference]: Finished difference Result 1814 states and 6830 transitions. [2022-03-01 17:19:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 17:19:53,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 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 21 [2022-03-01 17:19:53,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:19:53,920 INFO L225 Difference]: With dead ends: 1814 [2022-03-01 17:19:53,921 INFO L226 Difference]: Without dead ends: 1814 [2022-03-01 17:19:53,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:19:53,923 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 76 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:19:53,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 61 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:19:53,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2022-03-01 17:19:53,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 990. [2022-03-01 17:19:53,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 989 states have (on average 3.969666329625885) internal successors, (3926), 989 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:19:53,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 3926 transitions. [2022-03-01 17:19:53,972 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 3926 transitions. Word has length 21 [2022-03-01 17:19:53,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:19:53,973 INFO L470 AbstractCegarLoop]: Abstraction has 990 states and 3926 transitions. [2022-03-01 17:19:53,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 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) [2022-03-01 17:19:53,973 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 3926 transitions. [2022-03-01 17:19:53,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:19:53,978 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:19:53,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:19:54,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-01 17:19:54,203 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,SelfDestructingSolverStorable3 [2022-03-01 17:19:54,204 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:19:54,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:19:54,204 INFO L85 PathProgramCache]: Analyzing trace with hash -586124957, now seen corresponding path program 1 times [2022-03-01 17:19:54,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:19:54,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929470983] [2022-03-01 17:19:54,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:54,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:19:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:54,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:54,264 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:19:54,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929470983] [2022-03-01 17:19:54,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929470983] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:19:54,265 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:19:54,265 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:19:54,265 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341919600] [2022-03-01 17:19:54,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:19:54,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 17:19:54,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:19:54,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 17:19:54,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:19:54,267 INFO L87 Difference]: Start difference. First operand 990 states and 3926 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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) [2022-03-01 17:19:54,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:19:54,323 INFO L93 Difference]: Finished difference Result 1344 states and 5052 transitions. [2022-03-01 17:19:54,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 17:19:54,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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 21 [2022-03-01 17:19:54,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:19:54,340 INFO L225 Difference]: With dead ends: 1344 [2022-03-01 17:19:54,341 INFO L226 Difference]: Without dead ends: 1279 [2022-03-01 17:19:54,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:19:54,342 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 32 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 33 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 [2022-03-01 17:19:54,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 33 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:19:54,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-03-01 17:19:54,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1100. [2022-03-01 17:19:54,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 3.9008189262966333) internal successors, (4287), 1099 states have internal predecessors, (4287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:19:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 4287 transitions. [2022-03-01 17:19:54,382 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 4287 transitions. Word has length 21 [2022-03-01 17:19:54,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:19:54,382 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 4287 transitions. [2022-03-01 17:19:54,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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) [2022-03-01 17:19:54,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 4287 transitions. [2022-03-01 17:19:54,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:19:54,386 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:19:54,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:19:54,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-01 17:19:54,388 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:19:54,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:19:54,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2039889319, now seen corresponding path program 2 times [2022-03-01 17:19:54,389 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:19:54,389 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783481712] [2022-03-01 17:19:54,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:54,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:19:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:54,440 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:19:54,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783481712] [2022-03-01 17:19:54,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783481712] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:19:54,440 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:19:54,441 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-01 17:19:54,441 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157474369] [2022-03-01 17:19:54,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:19:54,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 17:19:54,441 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:19:54,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 17:19:54,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:19:54,442 INFO L87 Difference]: Start difference. First operand 1100 states and 4287 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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) [2022-03-01 17:19:54,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:19:54,504 INFO L93 Difference]: Finished difference Result 1412 states and 5401 transitions. [2022-03-01 17:19:54,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 17:19:54,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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 21 [2022-03-01 17:19:54,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:19:54,515 INFO L225 Difference]: With dead ends: 1412 [2022-03-01 17:19:54,515 INFO L226 Difference]: Without dead ends: 1412 [2022-03-01 17:19:54,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:19:54,516 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 54 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:19:54,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 32 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:19:54,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2022-03-01 17:19:54,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1174. [2022-03-01 17:19:54,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1173 states have (on average 3.9028132992327365) internal successors, (4578), 1173 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:19:54,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 4578 transitions. [2022-03-01 17:19:54,557 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 4578 transitions. Word has length 21 [2022-03-01 17:19:54,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:19:54,557 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 4578 transitions. [2022-03-01 17:19:54,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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) [2022-03-01 17:19:54,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 4578 transitions. [2022-03-01 17:19:54,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:19:54,561 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:19:54,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:19:54,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-01 17:19:54,561 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:19:54,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:19:54,562 INFO L85 PathProgramCache]: Analyzing trace with hash -104341599, now seen corresponding path program 2 times [2022-03-01 17:19:54,562 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:19:54,562 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678688861] [2022-03-01 17:19:54,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:54,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:19:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:54,621 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:19:54,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678688861] [2022-03-01 17:19:54,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678688861] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:19:54,622 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:19:54,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-01 17:19:54,622 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536729641] [2022-03-01 17:19:54,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:19:54,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 17:19:54,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:19:54,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 17:19:54,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:19:54,624 INFO L87 Difference]: Start difference. First operand 1174 states and 4578 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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) [2022-03-01 17:19:54,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:19:54,691 INFO L93 Difference]: Finished difference Result 1589 states and 6051 transitions. [2022-03-01 17:19:54,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 17:19:54,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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 21 [2022-03-01 17:19:54,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:19:54,701 INFO L225 Difference]: With dead ends: 1589 [2022-03-01 17:19:54,701 INFO L226 Difference]: Without dead ends: 1589 [2022-03-01 17:19:54,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:19:54,704 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 55 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:19:54,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 43 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:19:54,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2022-03-01 17:19:54,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1285. [2022-03-01 17:19:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1284 states have (on average 3.9088785046728973) internal successors, (5019), 1284 states have internal predecessors, (5019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:19:54,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 5019 transitions. [2022-03-01 17:19:54,747 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 5019 transitions. Word has length 21 [2022-03-01 17:19:54,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:19:54,747 INFO L470 AbstractCegarLoop]: Abstraction has 1285 states and 5019 transitions. [2022-03-01 17:19:54,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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) [2022-03-01 17:19:54,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 5019 transitions. [2022-03-01 17:19:54,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-01 17:19:54,751 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:19:54,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:19:54,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-01 17:19:54,751 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:19:54,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:19:54,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1270025759, now seen corresponding path program 1 times [2022-03-01 17:19:54,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:19:54,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952862271] [2022-03-01 17:19:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:54,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:19:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:54,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:54,821 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:19:54,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952862271] [2022-03-01 17:19:54,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952862271] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:19:54,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201473957] [2022-03-01 17:19:54,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:54,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:19:54,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:19:54,827 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) [2022-03-01 17:19:54,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-01 17:19:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:54,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-01 17:19:54,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:19:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:55,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:19:55,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:55,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201473957] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:19:55,242 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:19:55,242 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2022-03-01 17:19:55,243 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596067806] [2022-03-01 17:19:55,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:19:55,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 17:19:55,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:19:55,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 17:19:55,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:19:55,245 INFO L87 Difference]: Start difference. First operand 1285 states and 5019 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 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) [2022-03-01 17:19:55,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:19:55,353 INFO L93 Difference]: Finished difference Result 2143 states and 8130 transitions. [2022-03-01 17:19:55,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 17:19:55,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 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 23 [2022-03-01 17:19:55,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:19:55,368 INFO L225 Difference]: With dead ends: 2143 [2022-03-01 17:19:55,369 INFO L226 Difference]: Without dead ends: 2075 [2022-03-01 17:19:55,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:19:55,370 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:19:55,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 36 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:19:55,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-03-01 17:19:55,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1564. [2022-03-01 17:19:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1563 states have (on average 3.9366602687140113) internal successors, (6153), 1563 states have internal predecessors, (6153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:19:55,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 6153 transitions. [2022-03-01 17:19:55,429 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 6153 transitions. Word has length 23 [2022-03-01 17:19:55,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:19:55,430 INFO L470 AbstractCegarLoop]: Abstraction has 1564 states and 6153 transitions. [2022-03-01 17:19:55,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 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) [2022-03-01 17:19:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 6153 transitions. [2022-03-01 17:19:55,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-01 17:19:55,437 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:19:55,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:19:55,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-01 17:19:55,651 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 [2022-03-01 17:19:55,652 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:19:55,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:19:55,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1128387681, now seen corresponding path program 2 times [2022-03-01 17:19:55,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:19:55,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169061098] [2022-03-01 17:19:55,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:55,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:19:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:19:55,701 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:19:55,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169061098] [2022-03-01 17:19:55,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169061098] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:19:55,701 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:19:55,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:19:55,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782357635] [2022-03-01 17:19:55,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:19:55,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 17:19:55,702 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:19:55,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 17:19:55,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:19:55,702 INFO L87 Difference]: Start difference. First operand 1564 states and 6153 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 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) [2022-03-01 17:19:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:19:55,779 INFO L93 Difference]: Finished difference Result 2365 states and 9064 transitions. [2022-03-01 17:19:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 17:19:55,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 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 23 [2022-03-01 17:19:55,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:19:55,795 INFO L225 Difference]: With dead ends: 2365 [2022-03-01 17:19:55,795 INFO L226 Difference]: Without dead ends: 2297 [2022-03-01 17:19:55,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:19:55,796 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:19:55,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 26 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:19:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2022-03-01 17:19:55,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1785. [2022-03-01 17:19:55,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 3.9551569506726456) internal successors, (7056), 1784 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:19:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7056 transitions. [2022-03-01 17:19:55,856 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7056 transitions. Word has length 23 [2022-03-01 17:19:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:19:55,857 INFO L470 AbstractCegarLoop]: Abstraction has 1785 states and 7056 transitions. [2022-03-01 17:19:55,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 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) [2022-03-01 17:19:55,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7056 transitions. [2022-03-01 17:19:55,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-01 17:19:55,863 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:19:55,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:19:55,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-01 17:19:55,863 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:19:55,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:19:55,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1784493855, now seen corresponding path program 1 times [2022-03-01 17:19:55,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:19:55,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270802592] [2022-03-01 17:19:55,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:55,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:19:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:55,917 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:19:55,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270802592] [2022-03-01 17:19:55,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270802592] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:19:55,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011738328] [2022-03-01 17:19:55,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:55,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:19:55,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:19:55,919 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) [2022-03-01 17:19:55,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-01 17:19:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:55,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-01 17:19:55,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:19:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:56,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:19:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:56,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011738328] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:19:56,287 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:19:56,287 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2022-03-01 17:19:56,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589478436] [2022-03-01 17:19:56,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:19:56,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 17:19:56,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:19:56,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 17:19:56,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:19:56,289 INFO L87 Difference]: Start difference. First operand 1785 states and 7056 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 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) [2022-03-01 17:19:56,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:19:56,399 INFO L93 Difference]: Finished difference Result 2448 states and 9424 transitions. [2022-03-01 17:19:56,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 17:19:56,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 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 23 [2022-03-01 17:19:56,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:19:56,414 INFO L225 Difference]: With dead ends: 2448 [2022-03-01 17:19:56,414 INFO L226 Difference]: Without dead ends: 2397 [2022-03-01 17:19:56,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:19:56,415 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:19:56,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 39 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:19:56,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2022-03-01 17:19:56,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 2051. [2022-03-01 17:19:56,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2051 states, 2050 states have (on average 3.951219512195122) internal successors, (8100), 2050 states have internal predecessors, (8100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:19:56,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 8100 transitions. [2022-03-01 17:19:56,478 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 8100 transitions. Word has length 23 [2022-03-01 17:19:56,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:19:56,479 INFO L470 AbstractCegarLoop]: Abstraction has 2051 states and 8100 transitions. [2022-03-01 17:19:56,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 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) [2022-03-01 17:19:56,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 8100 transitions. [2022-03-01 17:19:56,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-01 17:19:56,485 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:19:56,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:19:56,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-01 17:19:56,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:19:56,709 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:19:56,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:19:56,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1452355087, now seen corresponding path program 2 times [2022-03-01 17:19:56,709 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:19:56,709 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195499383] [2022-03-01 17:19:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:56,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:19:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:19:56,752 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:19:56,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195499383] [2022-03-01 17:19:56,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195499383] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:19:56,752 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:19:56,753 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:19:56,753 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325295025] [2022-03-01 17:19:56,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:19:56,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 17:19:56,753 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:19:56,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 17:19:56,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:19:56,754 INFO L87 Difference]: Start difference. First operand 2051 states and 8100 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 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) [2022-03-01 17:19:56,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:19:56,834 INFO L93 Difference]: Finished difference Result 2710 states and 10468 transitions. [2022-03-01 17:19:56,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 17:19:56,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 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 23 [2022-03-01 17:19:56,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:19:56,845 INFO L225 Difference]: With dead ends: 2710 [2022-03-01 17:19:56,845 INFO L226 Difference]: Without dead ends: 2659 [2022-03-01 17:19:56,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:19:56,846 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:19:56,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 27 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:19:56,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2022-03-01 17:19:56,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2311. [2022-03-01 17:19:56,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2311 states, 2310 states have (on average 3.9484848484848483) internal successors, (9121), 2310 states have internal predecessors, (9121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:19:56,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 9121 transitions. [2022-03-01 17:19:56,927 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 9121 transitions. Word has length 23 [2022-03-01 17:19:56,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:19:56,927 INFO L470 AbstractCegarLoop]: Abstraction has 2311 states and 9121 transitions. [2022-03-01 17:19:56,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 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) [2022-03-01 17:19:56,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 9121 transitions. [2022-03-01 17:19:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:19:56,936 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:19:56,937 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:19:56,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-01 17:19:56,937 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:19:56,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:19:56,937 INFO L85 PathProgramCache]: Analyzing trace with hash -397256989, now seen corresponding path program 3 times [2022-03-01 17:19:56,938 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:19:56,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464758429] [2022-03-01 17:19:56,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:56,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:19:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:56,978 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:19:56,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464758429] [2022-03-01 17:19:56,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464758429] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:19:56,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702321172] [2022-03-01 17:19:56,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:19:56,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:19:56,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:19:56,980 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) [2022-03-01 17:19:56,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-01 17:19:57,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:19:57,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:19:57,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:19:57,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:19:57,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:57,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:19:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:57,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702321172] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:19:57,184 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:19:57,185 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-01 17:19:57,185 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338407976] [2022-03-01 17:19:57,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:19:57,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:19:57,185 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:19:57,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:19:57,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:19:57,186 INFO L87 Difference]: Start difference. First operand 2311 states and 9121 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 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) [2022-03-01 17:19:57,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:19:57,634 INFO L93 Difference]: Finished difference Result 6038 states and 23046 transitions. [2022-03-01 17:19:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 17:19:57,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 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 25 [2022-03-01 17:19:57,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:19:57,658 INFO L225 Difference]: With dead ends: 6038 [2022-03-01 17:19:57,659 INFO L226 Difference]: Without dead ends: 6038 [2022-03-01 17:19:57,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-03-01 17:19:57,660 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 186 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:19:57,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 252 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:19:57,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6038 states. [2022-03-01 17:19:57,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6038 to 2800. [2022-03-01 17:19:57,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2800 states, 2799 states have (on average 4.00821722043587) internal successors, (11219), 2799 states have internal predecessors, (11219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:19:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2800 states to 2800 states and 11219 transitions. [2022-03-01 17:19:57,769 INFO L78 Accepts]: Start accepts. Automaton has 2800 states and 11219 transitions. Word has length 25 [2022-03-01 17:19:57,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:19:57,769 INFO L470 AbstractCegarLoop]: Abstraction has 2800 states and 11219 transitions. [2022-03-01 17:19:57,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 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) [2022-03-01 17:19:57,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2800 states and 11219 transitions. [2022-03-01 17:19:57,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:19:57,778 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:19:57,778 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:19:57,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-01 17:19:57,992 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,SelfDestructingSolverStorable11 [2022-03-01 17:19:57,992 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:19:57,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:19:57,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2030384925, now seen corresponding path program 4 times [2022-03-01 17:19:57,993 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:19:57,993 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175576217] [2022-03-01 17:19:57,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:57,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:19:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:58,024 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:19:58,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175576217] [2022-03-01 17:19:58,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175576217] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:19:58,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284809299] [2022-03-01 17:19:58,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:19:58,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:19:58,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:19:58,025 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) [2022-03-01 17:19:58,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-01 17:19:58,065 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:19:58,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:19:58,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:19:58,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:19:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:58,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:19:58,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:58,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284809299] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:19:58,183 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:19:58,183 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-01 17:19:58,183 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930465419] [2022-03-01 17:19:58,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:19:58,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:19:58,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:19:58,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:19:58,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:19:58,185 INFO L87 Difference]: Start difference. First operand 2800 states and 11219 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 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) [2022-03-01 17:19:58,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:19:58,492 INFO L93 Difference]: Finished difference Result 5607 states and 21463 transitions. [2022-03-01 17:19:58,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 17:19:58,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 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 25 [2022-03-01 17:19:58,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:19:58,514 INFO L225 Difference]: With dead ends: 5607 [2022-03-01 17:19:58,514 INFO L226 Difference]: Without dead ends: 5495 [2022-03-01 17:19:58,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-03-01 17:19:58,515 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 250 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:19:58,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 142 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:19:58,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5495 states. [2022-03-01 17:19:58,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5495 to 3696. [2022-03-01 17:19:58,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 3695 states have (on average 4.088227334235453) internal successors, (15106), 3695 states have internal predecessors, (15106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:19:58,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 15106 transitions. [2022-03-01 17:19:58,640 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 15106 transitions. Word has length 25 [2022-03-01 17:19:58,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:19:58,641 INFO L470 AbstractCegarLoop]: Abstraction has 3696 states and 15106 transitions. [2022-03-01 17:19:58,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 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) [2022-03-01 17:19:58,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 15106 transitions. [2022-03-01 17:19:58,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:19:58,653 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:19:58,653 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:19:58,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-01 17:19:58,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:19:58,879 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:19:58,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:19:58,880 INFO L85 PathProgramCache]: Analyzing trace with hash -638630689, now seen corresponding path program 5 times [2022-03-01 17:19:58,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:19:58,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907753354] [2022-03-01 17:19:58,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:58,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:19:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:58,906 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:19:58,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907753354] [2022-03-01 17:19:58,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907753354] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:19:58,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673366888] [2022-03-01 17:19:58,907 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:19:58,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:19:58,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:19:58,908 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) [2022-03-01 17:19:58,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-01 17:19:58,946 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 17:19:58,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:19:58,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:19:58,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:19:59,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:59,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:19:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:59,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673366888] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:19:59,066 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:19:59,066 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:19:59,066 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120915115] [2022-03-01 17:19:59,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:19:59,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:19:59,067 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:19:59,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:19:59,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:19:59,067 INFO L87 Difference]: Start difference. First operand 3696 states and 15106 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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) [2022-03-01 17:19:59,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:19:59,321 INFO L93 Difference]: Finished difference Result 5302 states and 20641 transitions. [2022-03-01 17:19:59,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 17:19:59,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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 25 [2022-03-01 17:19:59,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:19:59,344 INFO L225 Difference]: With dead ends: 5302 [2022-03-01 17:19:59,344 INFO L226 Difference]: Without dead ends: 5302 [2022-03-01 17:19:59,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-03-01 17:19:59,345 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 252 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:19:59,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 126 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:19:59,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5302 states. [2022-03-01 17:19:59,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5302 to 3659. [2022-03-01 17:19:59,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 3658 states have (on average 4.064516129032258) internal successors, (14868), 3658 states have internal predecessors, (14868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:19:59,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 14868 transitions. [2022-03-01 17:19:59,521 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 14868 transitions. Word has length 25 [2022-03-01 17:19:59,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:19:59,522 INFO L470 AbstractCegarLoop]: Abstraction has 3659 states and 14868 transitions. [2022-03-01 17:19:59,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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) [2022-03-01 17:19:59,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 14868 transitions. [2022-03-01 17:19:59,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:19:59,532 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:19:59,532 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:19:59,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-01 17:19:59,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:19:59,757 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:19:59,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:19:59,757 INFO L85 PathProgramCache]: Analyzing trace with hash -192019813, now seen corresponding path program 6 times [2022-03-01 17:19:59,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:19:59,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667883014] [2022-03-01 17:19:59,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:19:59,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:19:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:19:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:59,793 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:19:59,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667883014] [2022-03-01 17:19:59,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667883014] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:19:59,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7872834] [2022-03-01 17:19:59,793 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:19:59,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:19:59,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:19:59,794 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) [2022-03-01 17:19:59,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-01 17:19:59,824 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 17:19:59,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:19:59,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:19:59,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:19:59,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:59,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:19:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:19:59,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7872834] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:19:59,937 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:19:59,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:19:59,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851644158] [2022-03-01 17:19:59,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:19:59,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:19:59,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:19:59,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:19:59,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:19:59,938 INFO L87 Difference]: Start difference. First operand 3659 states and 14868 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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) [2022-03-01 17:20:00,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:00,195 INFO L93 Difference]: Finished difference Result 4788 states and 18687 transitions. [2022-03-01 17:20:00,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:20:00,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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 25 [2022-03-01 17:20:00,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:00,214 INFO L225 Difference]: With dead ends: 4788 [2022-03-01 17:20:00,214 INFO L226 Difference]: Without dead ends: 4768 [2022-03-01 17:20:00,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-03-01 17:20:00,216 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 158 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:00,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 189 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:00,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4768 states. [2022-03-01 17:20:00,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4768 to 3665. [2022-03-01 17:20:00,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3665 states, 3664 states have (on average 4.060316593886463) internal successors, (14877), 3664 states have internal predecessors, (14877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 14877 transitions. [2022-03-01 17:20:00,382 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 14877 transitions. Word has length 25 [2022-03-01 17:20:00,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:00,382 INFO L470 AbstractCegarLoop]: Abstraction has 3665 states and 14877 transitions. [2022-03-01 17:20:00,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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) [2022-03-01 17:20:00,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 14877 transitions. [2022-03-01 17:20:00,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:20:00,393 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:00,393 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:00,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:00,615 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,SelfDestructingSolverStorable14 [2022-03-01 17:20:00,616 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:00,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:00,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2044906781, now seen corresponding path program 7 times [2022-03-01 17:20:00,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:00,617 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206717380] [2022-03-01 17:20:00,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:00,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:00,651 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:00,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206717380] [2022-03-01 17:20:00,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206717380] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:00,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437340778] [2022-03-01 17:20:00,652 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:20:00,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:00,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:00,672 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) [2022-03-01 17:20:00,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-01 17:20:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:00,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:20:00,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:00,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:20:00,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437340778] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:00,841 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:00,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:20:00,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227384681] [2022-03-01 17:20:00,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:00,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:00,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:00,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:00,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:00,843 INFO L87 Difference]: Start difference. First operand 3665 states and 14877 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 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) [2022-03-01 17:20:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:01,130 INFO L93 Difference]: Finished difference Result 7954 states and 31437 transitions. [2022-03-01 17:20:01,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 17:20:01,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 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 25 [2022-03-01 17:20:01,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:01,164 INFO L225 Difference]: With dead ends: 7954 [2022-03-01 17:20:01,164 INFO L226 Difference]: Without dead ends: 7954 [2022-03-01 17:20:01,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-03-01 17:20:01,165 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 258 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:01,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 120 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:01,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7954 states. [2022-03-01 17:20:01,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7954 to 4610. [2022-03-01 17:20:01,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 4609 states have (on average 4.175092210891734) internal successors, (19243), 4609 states have internal predecessors, (19243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:01,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 19243 transitions. [2022-03-01 17:20:01,419 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 19243 transitions. Word has length 25 [2022-03-01 17:20:01,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:01,419 INFO L470 AbstractCegarLoop]: Abstraction has 4610 states and 19243 transitions. [2022-03-01 17:20:01,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 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) [2022-03-01 17:20:01,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 19243 transitions. [2022-03-01 17:20:01,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:20:01,432 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:01,432 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:01,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:01,655 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,SelfDestructingSolverStorable15 [2022-03-01 17:20:01,655 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:01,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:01,656 INFO L85 PathProgramCache]: Analyzing trace with hash 742460259, now seen corresponding path program 8 times [2022-03-01 17:20:01,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:01,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501643050] [2022-03-01 17:20:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:01,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:01,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:01,733 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:01,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501643050] [2022-03-01 17:20:01,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501643050] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:01,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119067825] [2022-03-01 17:20:01,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:20:01,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:01,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:01,736 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) [2022-03-01 17:20:01,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-01 17:20:01,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:20:01,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:01,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:20:01,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:01,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:01,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:20:01,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119067825] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:01,881 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:01,881 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:20:01,881 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504941296] [2022-03-01 17:20:01,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:01,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:01,882 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:01,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:01,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:01,882 INFO L87 Difference]: Start difference. First operand 4610 states and 19243 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2022-03-01 17:20:02,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:02,148 INFO L93 Difference]: Finished difference Result 6087 states and 24217 transitions. [2022-03-01 17:20:02,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:20:02,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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 25 [2022-03-01 17:20:02,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:02,164 INFO L225 Difference]: With dead ends: 6087 [2022-03-01 17:20:02,165 INFO L226 Difference]: Without dead ends: 6059 [2022-03-01 17:20:02,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-03-01 17:20:02,165 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 150 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:02,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 207 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:02,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6059 states. [2022-03-01 17:20:02,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6059 to 4587. [2022-03-01 17:20:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4587 states, 4586 states have (on average 4.174662014827737) internal successors, (19145), 4586 states have internal predecessors, (19145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:02,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 19145 transitions. [2022-03-01 17:20:02,353 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 19145 transitions. Word has length 25 [2022-03-01 17:20:02,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:02,354 INFO L470 AbstractCegarLoop]: Abstraction has 4587 states and 19145 transitions. [2022-03-01 17:20:02,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2022-03-01 17:20:02,354 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 19145 transitions. [2022-03-01 17:20:02,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:20:02,366 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:02,366 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:02,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:02,579 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,SelfDestructingSolverStorable16 [2022-03-01 17:20:02,579 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:02,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:02,580 INFO L85 PathProgramCache]: Analyzing trace with hash -316492321, now seen corresponding path program 9 times [2022-03-01 17:20:02,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:02,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505309966] [2022-03-01 17:20:02,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:02,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:02,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:02,608 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:02,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505309966] [2022-03-01 17:20:02,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505309966] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:02,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13621912] [2022-03-01 17:20:02,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:20:02,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:02,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:02,610 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) [2022-03-01 17:20:02,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-01 17:20:02,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:20:02,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:02,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:20:02,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:02,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:02,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:20:02,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13621912] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:02,761 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:02,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:20:02,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395081253] [2022-03-01 17:20:02,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:02,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:02,762 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:02,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:02,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:02,762 INFO L87 Difference]: Start difference. First operand 4587 states and 19145 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 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) [2022-03-01 17:20:03,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:03,078 INFO L93 Difference]: Finished difference Result 6950 states and 27646 transitions. [2022-03-01 17:20:03,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 17:20:03,078 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 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 25 [2022-03-01 17:20:03,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:03,096 INFO L225 Difference]: With dead ends: 6950 [2022-03-01 17:20:03,097 INFO L226 Difference]: Without dead ends: 6950 [2022-03-01 17:20:03,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-03-01 17:20:03,097 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 189 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:03,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 192 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:03,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6950 states. [2022-03-01 17:20:03,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6950 to 4669. [2022-03-01 17:20:03,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4669 states, 4668 states have (on average 4.1782347900599826) internal successors, (19504), 4668 states have internal predecessors, (19504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:03,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4669 states to 4669 states and 19504 transitions. [2022-03-01 17:20:03,293 INFO L78 Accepts]: Start accepts. Automaton has 4669 states and 19504 transitions. Word has length 25 [2022-03-01 17:20:03,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:03,293 INFO L470 AbstractCegarLoop]: Abstraction has 4669 states and 19504 transitions. [2022-03-01 17:20:03,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 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) [2022-03-01 17:20:03,293 INFO L276 IsEmpty]: Start isEmpty. Operand 4669 states and 19504 transitions. [2022-03-01 17:20:03,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:20:03,307 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:03,307 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:03,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:03,527 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,SelfDestructingSolverStorable17 [2022-03-01 17:20:03,527 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:03,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:03,528 INFO L85 PathProgramCache]: Analyzing trace with hash 130118555, now seen corresponding path program 10 times [2022-03-01 17:20:03,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:03,528 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897244330] [2022-03-01 17:20:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:03,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:03,557 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:03,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897244330] [2022-03-01 17:20:03,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897244330] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:03,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047240930] [2022-03-01 17:20:03,557 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:20:03,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:03,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:03,559 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) [2022-03-01 17:20:03,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-01 17:20:03,586 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:20:03,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:03,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:20:03,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:03,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:03,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:20:03,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047240930] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:03,704 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:03,704 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:20:03,704 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200964116] [2022-03-01 17:20:03,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:03,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:03,705 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:03,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:03,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:03,705 INFO L87 Difference]: Start difference. First operand 4669 states and 19504 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 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) [2022-03-01 17:20:03,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:03,984 INFO L93 Difference]: Finished difference Result 7627 states and 29903 transitions. [2022-03-01 17:20:03,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 17:20:03,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 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 25 [2022-03-01 17:20:03,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:04,014 INFO L225 Difference]: With dead ends: 7627 [2022-03-01 17:20:04,015 INFO L226 Difference]: Without dead ends: 7607 [2022-03-01 17:20:04,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-03-01 17:20:04,016 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 265 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:04,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 151 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:04,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7607 states. [2022-03-01 17:20:04,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7607 to 4687. [2022-03-01 17:20:04,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4687 states, 4686 states have (on average 4.173068715322237) internal successors, (19555), 4686 states have internal predecessors, (19555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:04,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 19555 transitions. [2022-03-01 17:20:04,251 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 19555 transitions. Word has length 25 [2022-03-01 17:20:04,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:04,251 INFO L470 AbstractCegarLoop]: Abstraction has 4687 states and 19555 transitions. [2022-03-01 17:20:04,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 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) [2022-03-01 17:20:04,251 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 19555 transitions. [2022-03-01 17:20:04,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:20:04,264 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:04,264 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:04,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:04,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:04,479 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:04,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:04,480 INFO L85 PathProgramCache]: Analyzing trace with hash -585238749, now seen corresponding path program 11 times [2022-03-01 17:20:04,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:04,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297048329] [2022-03-01 17:20:04,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:04,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:04,508 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:04,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297048329] [2022-03-01 17:20:04,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297048329] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:04,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941226361] [2022-03-01 17:20:04,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:20:04,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:04,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:04,510 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) [2022-03-01 17:20:04,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-01 17:20:04,538 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 17:20:04,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:04,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:20:04,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:04,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:04,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:04,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941226361] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:04,671 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:04,671 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-01 17:20:04,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751560261] [2022-03-01 17:20:04,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:04,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:04,672 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:04,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:04,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:04,673 INFO L87 Difference]: Start difference. First operand 4687 states and 19555 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 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) [2022-03-01 17:20:05,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:05,076 INFO L93 Difference]: Finished difference Result 7378 states and 29710 transitions. [2022-03-01 17:20:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 17:20:05,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 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 25 [2022-03-01 17:20:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:05,097 INFO L225 Difference]: With dead ends: 7378 [2022-03-01 17:20:05,098 INFO L226 Difference]: Without dead ends: 7378 [2022-03-01 17:20:05,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-03-01 17:20:05,098 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 161 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:05,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 233 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:05,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7378 states. [2022-03-01 17:20:05,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7378 to 5057. [2022-03-01 17:20:05,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5057 states, 5056 states have (on average 4.166139240506329) internal successors, (21064), 5056 states have internal predecessors, (21064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:05,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5057 states to 5057 states and 21064 transitions. [2022-03-01 17:20:05,244 INFO L78 Accepts]: Start accepts. Automaton has 5057 states and 21064 transitions. Word has length 25 [2022-03-01 17:20:05,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:05,244 INFO L470 AbstractCegarLoop]: Abstraction has 5057 states and 21064 transitions. [2022-03-01 17:20:05,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 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) [2022-03-01 17:20:05,244 INFO L276 IsEmpty]: Start isEmpty. Operand 5057 states and 21064 transitions. [2022-03-01 17:20:05,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:20:05,256 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:05,257 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:05,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-03-01 17:20:05,457 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,SelfDestructingSolverStorable19 [2022-03-01 17:20:05,457 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:05,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:05,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1874482561, now seen corresponding path program 12 times [2022-03-01 17:20:05,458 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:05,458 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700133524] [2022-03-01 17:20:05,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:05,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:05,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:05,489 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:05,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700133524] [2022-03-01 17:20:05,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700133524] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:05,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492372914] [2022-03-01 17:20:05,490 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:20:05,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:05,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:05,491 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) [2022-03-01 17:20:05,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-01 17:20:05,527 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 17:20:05,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:05,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:20:05,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:05,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:05,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492372914] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:05,656 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:05,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-01 17:20:05,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610934077] [2022-03-01 17:20:05,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:05,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:05,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:05,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:05,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:05,657 INFO L87 Difference]: Start difference. First operand 5057 states and 21064 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 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) [2022-03-01 17:20:05,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:05,940 INFO L93 Difference]: Finished difference Result 7943 states and 31115 transitions. [2022-03-01 17:20:05,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 17:20:05,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 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 25 [2022-03-01 17:20:05,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:05,966 INFO L225 Difference]: With dead ends: 7943 [2022-03-01 17:20:05,966 INFO L226 Difference]: Without dead ends: 7883 [2022-03-01 17:20:05,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-03-01 17:20:05,967 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 260 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:05,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 138 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:20:05,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7883 states. [2022-03-01 17:20:06,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7883 to 5255. [2022-03-01 17:20:06,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5255 states, 5254 states have (on average 4.142558051008756) internal successors, (21765), 5254 states have internal predecessors, (21765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:06,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 21765 transitions. [2022-03-01 17:20:06,089 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 21765 transitions. Word has length 25 [2022-03-01 17:20:06,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:06,090 INFO L470 AbstractCegarLoop]: Abstraction has 5255 states and 21765 transitions. [2022-03-01 17:20:06,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 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) [2022-03-01 17:20:06,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 21765 transitions. [2022-03-01 17:20:06,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:20:06,101 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:06,101 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:06,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:06,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:06,303 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:06,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:06,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1929197791, now seen corresponding path program 3 times [2022-03-01 17:20:06,304 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:06,304 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089763860] [2022-03-01 17:20:06,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:06,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:06,338 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:06,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089763860] [2022-03-01 17:20:06,338 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089763860] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:06,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361416492] [2022-03-01 17:20:06,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:20:06,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:06,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:06,339 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) [2022-03-01 17:20:06,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-01 17:20:06,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:20:06,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:06,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:20:06,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:06,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:06,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:06,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361416492] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:06,501 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:06,501 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-01 17:20:06,501 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875391670] [2022-03-01 17:20:06,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:06,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:06,502 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:06,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:06,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:06,502 INFO L87 Difference]: Start difference. First operand 5255 states and 21765 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2022-03-01 17:20:06,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:06,979 INFO L93 Difference]: Finished difference Result 16146 states and 66180 transitions. [2022-03-01 17:20:06,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 17:20:06,980 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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 25 [2022-03-01 17:20:06,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:07,040 INFO L225 Difference]: With dead ends: 16146 [2022-03-01 17:20:07,040 INFO L226 Difference]: Without dead ends: 16146 [2022-03-01 17:20:07,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-03-01 17:20:07,041 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 156 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:07,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 268 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:20:07,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16146 states. [2022-03-01 17:20:07,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16146 to 7401. [2022-03-01 17:20:07,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7401 states, 7400 states have (on average 4.2628378378378375) internal successors, (31545), 7400 states have internal predecessors, (31545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:07,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7401 states to 7401 states and 31545 transitions. [2022-03-01 17:20:07,387 INFO L78 Accepts]: Start accepts. Automaton has 7401 states and 31545 transitions. Word has length 25 [2022-03-01 17:20:07,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:07,387 INFO L470 AbstractCegarLoop]: Abstraction has 7401 states and 31545 transitions. [2022-03-01 17:20:07,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2022-03-01 17:20:07,388 INFO L276 IsEmpty]: Start isEmpty. Operand 7401 states and 31545 transitions. [2022-03-01 17:20:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:20:07,411 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:07,411 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:07,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:07,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:07,612 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:07,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:07,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1602824093, now seen corresponding path program 4 times [2022-03-01 17:20:07,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:07,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384711316] [2022-03-01 17:20:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:07,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:07,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:07,651 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:07,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384711316] [2022-03-01 17:20:07,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384711316] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:07,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444983046] [2022-03-01 17:20:07,651 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:20:07,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:07,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:07,652 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) [2022-03-01 17:20:07,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-01 17:20:07,675 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:20:07,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:07,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:20:07,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:07,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:07,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:07,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444983046] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:07,809 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:07,809 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-01 17:20:07,809 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993465095] [2022-03-01 17:20:07,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:07,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:07,812 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:07,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:07,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:07,812 INFO L87 Difference]: Start difference. First operand 7401 states and 31545 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 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) [2022-03-01 17:20:08,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:08,151 INFO L93 Difference]: Finished difference Result 15690 states and 65076 transitions. [2022-03-01 17:20:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 17:20:08,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 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 25 [2022-03-01 17:20:08,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:08,203 INFO L225 Difference]: With dead ends: 15690 [2022-03-01 17:20:08,204 INFO L226 Difference]: Without dead ends: 15594 [2022-03-01 17:20:08,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-03-01 17:20:08,205 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 209 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:08,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 155 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:08,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15594 states. [2022-03-01 17:20:08,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15594 to 10713. [2022-03-01 17:20:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10713 states, 10712 states have (on average 4.391150112023898) internal successors, (47038), 10712 states have internal predecessors, (47038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:08,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10713 states to 10713 states and 47038 transitions. [2022-03-01 17:20:08,580 INFO L78 Accepts]: Start accepts. Automaton has 10713 states and 47038 transitions. Word has length 25 [2022-03-01 17:20:08,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:08,580 INFO L470 AbstractCegarLoop]: Abstraction has 10713 states and 47038 transitions. [2022-03-01 17:20:08,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 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) [2022-03-01 17:20:08,580 INFO L276 IsEmpty]: Start isEmpty. Operand 10713 states and 47038 transitions. [2022-03-01 17:20:08,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:20:08,603 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:08,603 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:08,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:08,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-01 17:20:08,803 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:08,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:08,804 INFO L85 PathProgramCache]: Analyzing trace with hash -829404249, now seen corresponding path program 5 times [2022-03-01 17:20:08,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:08,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514761370] [2022-03-01 17:20:08,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:08,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:08,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:08,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514761370] [2022-03-01 17:20:08,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514761370] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:08,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979773156] [2022-03-01 17:20:08,841 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:20:08,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:08,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:08,842 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) [2022-03-01 17:20:08,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-01 17:20:08,869 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 17:20:08,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:08,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:20:08,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:08,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:09,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979773156] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:09,093 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:09,093 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:20:09,094 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153363477] [2022-03-01 17:20:09,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:09,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:09,094 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:09,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:09,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:09,094 INFO L87 Difference]: Start difference. First operand 10713 states and 47038 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2022-03-01 17:20:09,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:09,440 INFO L93 Difference]: Finished difference Result 15255 states and 64180 transitions. [2022-03-01 17:20:09,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 17:20:09,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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 25 [2022-03-01 17:20:09,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:09,504 INFO L225 Difference]: With dead ends: 15255 [2022-03-01 17:20:09,505 INFO L226 Difference]: Without dead ends: 15255 [2022-03-01 17:20:09,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-03-01 17:20:09,506 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 223 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:09,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 117 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:09,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15255 states. [2022-03-01 17:20:09,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15255 to 10587. [2022-03-01 17:20:09,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10587 states, 10586 states have (on average 4.366616285660306) internal successors, (46225), 10586 states have internal predecessors, (46225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:09,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10587 states to 10587 states and 46225 transitions. [2022-03-01 17:20:09,875 INFO L78 Accepts]: Start accepts. Automaton has 10587 states and 46225 transitions. Word has length 25 [2022-03-01 17:20:09,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:09,875 INFO L470 AbstractCegarLoop]: Abstraction has 10587 states and 46225 transitions. [2022-03-01 17:20:09,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2022-03-01 17:20:09,876 INFO L276 IsEmpty]: Start isEmpty. Operand 10587 states and 46225 transitions. [2022-03-01 17:20:09,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:20:09,897 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:09,897 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:09,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:10,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:10,098 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:10,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:10,099 INFO L85 PathProgramCache]: Analyzing trace with hash 160062431, now seen corresponding path program 6 times [2022-03-01 17:20:10,099 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:10,099 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478892477] [2022-03-01 17:20:10,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:10,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:10,130 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:10,130 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:10,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478892477] [2022-03-01 17:20:10,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478892477] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:10,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490487174] [2022-03-01 17:20:10,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:20:10,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:10,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:10,131 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) [2022-03-01 17:20:10,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-01 17:20:10,154 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 17:20:10,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:10,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:20:10,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:10,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:10,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490487174] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:10,276 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:10,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:20:10,276 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26431842] [2022-03-01 17:20:10,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:10,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:10,276 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:10,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:10,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:10,277 INFO L87 Difference]: Start difference. First operand 10587 states and 46225 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 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) [2022-03-01 17:20:10,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:10,650 INFO L93 Difference]: Finished difference Result 13469 states and 56467 transitions. [2022-03-01 17:20:10,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:20:10,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 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 25 [2022-03-01 17:20:10,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:10,697 INFO L225 Difference]: With dead ends: 13469 [2022-03-01 17:20:10,697 INFO L226 Difference]: Without dead ends: 13444 [2022-03-01 17:20:10,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-03-01 17:20:10,698 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 105 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:10,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 213 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:10,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13444 states. [2022-03-01 17:20:11,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13444 to 10653. [2022-03-01 17:20:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10653 states, 10652 states have (on average 4.361997746901991) internal successors, (46464), 10652 states have internal predecessors, (46464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:11,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10653 states to 10653 states and 46464 transitions. [2022-03-01 17:20:11,063 INFO L78 Accepts]: Start accepts. Automaton has 10653 states and 46464 transitions. Word has length 25 [2022-03-01 17:20:11,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:11,063 INFO L470 AbstractCegarLoop]: Abstraction has 10653 states and 46464 transitions. [2022-03-01 17:20:11,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 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) [2022-03-01 17:20:11,063 INFO L276 IsEmpty]: Start isEmpty. Operand 10653 states and 46464 transitions. [2022-03-01 17:20:11,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:20:11,094 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:11,094 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:11,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:11,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:11,307 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:11,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:11,308 INFO L85 PathProgramCache]: Analyzing trace with hash -309349743, now seen corresponding path program 7 times [2022-03-01 17:20:11,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:11,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253241343] [2022-03-01 17:20:11,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:11,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:11,340 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:11,340 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:11,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253241343] [2022-03-01 17:20:11,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253241343] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:11,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181230292] [2022-03-01 17:20:11,341 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:20:11,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:11,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:11,342 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) [2022-03-01 17:20:11,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-01 17:20:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:11,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:20:11,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:11,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:20:11,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181230292] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:11,499 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:11,499 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:20:11,499 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532566801] [2022-03-01 17:20:11,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:11,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:11,500 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:11,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:11,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:11,500 INFO L87 Difference]: Start difference. First operand 10653 states and 46464 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 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) [2022-03-01 17:20:11,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:11,825 INFO L93 Difference]: Finished difference Result 23056 states and 98319 transitions. [2022-03-01 17:20:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 17:20:11,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 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 25 [2022-03-01 17:20:11,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:12,032 INFO L225 Difference]: With dead ends: 23056 [2022-03-01 17:20:12,033 INFO L226 Difference]: Without dead ends: 23056 [2022-03-01 17:20:12,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-03-01 17:20:12,034 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 216 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:12,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 140 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:20:12,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23056 states. [2022-03-01 17:20:12,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23056 to 14095. [2022-03-01 17:20:12,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14095 states, 14094 states have (on average 4.5) internal successors, (63423), 14094 states have internal predecessors, (63423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14095 states to 14095 states and 63423 transitions. [2022-03-01 17:20:12,475 INFO L78 Accepts]: Start accepts. Automaton has 14095 states and 63423 transitions. Word has length 25 [2022-03-01 17:20:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:12,475 INFO L470 AbstractCegarLoop]: Abstraction has 14095 states and 63423 transitions. [2022-03-01 17:20:12,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 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) [2022-03-01 17:20:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 14095 states and 63423 transitions. [2022-03-01 17:20:12,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:20:12,513 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:12,514 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:12,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:12,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:12,736 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:12,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:12,737 INFO L85 PathProgramCache]: Analyzing trace with hash -547313135, now seen corresponding path program 8 times [2022-03-01 17:20:12,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:12,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998572127] [2022-03-01 17:20:12,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:12,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:12,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:12,766 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:12,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998572127] [2022-03-01 17:20:12,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998572127] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:12,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321919663] [2022-03-01 17:20:12,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:20:12,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:12,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:12,768 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) [2022-03-01 17:20:12,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-01 17:20:12,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:20:12,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:12,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:20:12,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:12,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:20:12,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321919663] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:12,927 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:12,927 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:20:12,928 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175258146] [2022-03-01 17:20:12,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:12,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:12,928 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:12,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:12,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:12,928 INFO L87 Difference]: Start difference. First operand 14095 states and 63423 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 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) [2022-03-01 17:20:13,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:13,401 INFO L93 Difference]: Finished difference Result 18427 states and 79299 transitions. [2022-03-01 17:20:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:20:13,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 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 25 [2022-03-01 17:20:13,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:13,469 INFO L225 Difference]: With dead ends: 18427 [2022-03-01 17:20:13,469 INFO L226 Difference]: Without dead ends: 18403 [2022-03-01 17:20:13,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-03-01 17:20:13,470 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 140 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:13,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 200 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:13,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18403 states. [2022-03-01 17:20:13,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18403 to 14093. [2022-03-01 17:20:13,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14093 states, 14092 states have (on average 4.498864604030656) internal successors, (63398), 14092 states have internal predecessors, (63398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:13,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14093 states to 14093 states and 63398 transitions. [2022-03-01 17:20:13,931 INFO L78 Accepts]: Start accepts. Automaton has 14093 states and 63398 transitions. Word has length 25 [2022-03-01 17:20:13,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:13,931 INFO L470 AbstractCegarLoop]: Abstraction has 14093 states and 63398 transitions. [2022-03-01 17:20:13,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 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) [2022-03-01 17:20:13,931 INFO L276 IsEmpty]: Start isEmpty. Operand 14093 states and 63398 transitions. [2022-03-01 17:20:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:20:13,965 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:13,966 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:13,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-03-01 17:20:14,166 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,SelfDestructingSolverStorable26 [2022-03-01 17:20:14,166 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:14,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:14,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2067157521, now seen corresponding path program 9 times [2022-03-01 17:20:14,167 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:14,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90007669] [2022-03-01 17:20:14,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:14,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:14,195 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:14,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90007669] [2022-03-01 17:20:14,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90007669] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:14,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611608060] [2022-03-01 17:20:14,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:20:14,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:14,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:14,197 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) [2022-03-01 17:20:14,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-01 17:20:14,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:20:14,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:14,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:20:14,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:14,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:14,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:20:14,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611608060] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:14,491 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:14,491 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:20:14,491 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420826575] [2022-03-01 17:20:14,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:14,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:14,491 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:14,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:14,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:14,492 INFO L87 Difference]: Start difference. First operand 14093 states and 63398 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 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) [2022-03-01 17:20:14,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:14,853 INFO L93 Difference]: Finished difference Result 21428 states and 91981 transitions. [2022-03-01 17:20:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 17:20:14,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 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 25 [2022-03-01 17:20:14,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:15,041 INFO L225 Difference]: With dead ends: 21428 [2022-03-01 17:20:15,041 INFO L226 Difference]: Without dead ends: 21428 [2022-03-01 17:20:15,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-03-01 17:20:15,042 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 193 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:15,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 187 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:15,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21428 states. [2022-03-01 17:20:15,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21428 to 14369. [2022-03-01 17:20:15,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14369 states, 14368 states have (on average 4.502227171492205) internal successors, (64688), 14368 states have internal predecessors, (64688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:15,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14369 states to 14369 states and 64688 transitions. [2022-03-01 17:20:15,489 INFO L78 Accepts]: Start accepts. Automaton has 14369 states and 64688 transitions. Word has length 25 [2022-03-01 17:20:15,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:15,489 INFO L470 AbstractCegarLoop]: Abstraction has 14369 states and 64688 transitions. [2022-03-01 17:20:15,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 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) [2022-03-01 17:20:15,489 INFO L276 IsEmpty]: Start isEmpty. Operand 14369 states and 64688 transitions. [2022-03-01 17:20:15,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:20:15,524 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:15,524 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:15,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-03-01 17:20:15,725 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,SelfDestructingSolverStorable27 [2022-03-01 17:20:15,725 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:15,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:15,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1238343095, now seen corresponding path program 10 times [2022-03-01 17:20:15,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:15,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76068292] [2022-03-01 17:20:15,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:15,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:15,755 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:15,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76068292] [2022-03-01 17:20:15,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76068292] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:15,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827356310] [2022-03-01 17:20:15,756 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:20:15,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:15,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:15,757 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) [2022-03-01 17:20:15,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-01 17:20:15,779 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:20:15,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:15,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:20:15,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:15,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:15,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:20:15,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827356310] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:15,898 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:15,899 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:20:15,899 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108140691] [2022-03-01 17:20:15,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:15,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:15,899 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:15,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:15,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:15,900 INFO L87 Difference]: Start difference. First operand 14369 states and 64688 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 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) [2022-03-01 17:20:16,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:16,377 INFO L93 Difference]: Finished difference Result 21976 states and 93132 transitions. [2022-03-01 17:20:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 17:20:16,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 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 25 [2022-03-01 17:20:16,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:16,466 INFO L225 Difference]: With dead ends: 21976 [2022-03-01 17:20:16,466 INFO L226 Difference]: Without dead ends: 21951 [2022-03-01 17:20:16,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-03-01 17:20:16,467 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 207 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:16,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 155 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:20:16,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21951 states. [2022-03-01 17:20:16,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21951 to 14371. [2022-03-01 17:20:16,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14371 states, 14370 states have (on average 4.501530967292972) internal successors, (64687), 14370 states have internal predecessors, (64687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14371 states to 14371 states and 64687 transitions. [2022-03-01 17:20:16,922 INFO L78 Accepts]: Start accepts. Automaton has 14371 states and 64687 transitions. Word has length 25 [2022-03-01 17:20:16,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:16,923 INFO L470 AbstractCegarLoop]: Abstraction has 14371 states and 64687 transitions. [2022-03-01 17:20:16,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 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) [2022-03-01 17:20:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 14371 states and 64687 transitions. [2022-03-01 17:20:16,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:20:16,953 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:16,953 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:16,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-03-01 17:20:17,153 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,SelfDestructingSolverStorable28 [2022-03-01 17:20:17,153 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:17,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:17,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1192902861, now seen corresponding path program 11 times [2022-03-01 17:20:17,154 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:17,154 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530878565] [2022-03-01 17:20:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:17,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:17,178 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:17,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530878565] [2022-03-01 17:20:17,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530878565] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:17,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464580657] [2022-03-01 17:20:17,179 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:20:17,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:17,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:17,180 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) [2022-03-01 17:20:17,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-01 17:20:17,204 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 17:20:17,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:17,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:20:17,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:17,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:17,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464580657] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:17,313 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:17,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-01 17:20:17,314 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604589993] [2022-03-01 17:20:17,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:17,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:17,314 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:17,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:17,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:17,314 INFO L87 Difference]: Start difference. First operand 14371 states and 64687 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2022-03-01 17:20:17,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:17,949 INFO L93 Difference]: Finished difference Result 23394 states and 101370 transitions. [2022-03-01 17:20:17,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 17:20:17,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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 25 [2022-03-01 17:20:17,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:18,028 INFO L225 Difference]: With dead ends: 23394 [2022-03-01 17:20:18,029 INFO L226 Difference]: Without dead ends: 23394 [2022-03-01 17:20:18,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-03-01 17:20:18,029 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 165 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:18,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 214 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:20:18,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23394 states. [2022-03-01 17:20:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23394 to 15994. [2022-03-01 17:20:18,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15994 states, 15993 states have (on average 4.474832739323454) internal successors, (71566), 15993 states have internal predecessors, (71566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:18,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15994 states to 15994 states and 71566 transitions. [2022-03-01 17:20:18,737 INFO L78 Accepts]: Start accepts. Automaton has 15994 states and 71566 transitions. Word has length 25 [2022-03-01 17:20:18,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:18,737 INFO L470 AbstractCegarLoop]: Abstraction has 15994 states and 71566 transitions. [2022-03-01 17:20:18,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2022-03-01 17:20:18,738 INFO L276 IsEmpty]: Start isEmpty. Operand 15994 states and 71566 transitions. [2022-03-01 17:20:18,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-01 17:20:18,791 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:18,791 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:18,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:18,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:18,992 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:18,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:18,992 INFO L85 PathProgramCache]: Analyzing trace with hash 2059167099, now seen corresponding path program 12 times [2022-03-01 17:20:18,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:18,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886149232] [2022-03-01 17:20:18,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:18,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:19,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:19,024 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:19,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886149232] [2022-03-01 17:20:19,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886149232] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:19,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724244097] [2022-03-01 17:20:19,024 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:20:19,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:19,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:19,025 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) [2022-03-01 17:20:19,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-01 17:20:19,047 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 17:20:19,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:19,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:20:19,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:19,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:19,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:19,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724244097] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:19,169 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:19,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-01 17:20:19,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310549851] [2022-03-01 17:20:19,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:19,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:19,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:19,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:19,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:19,171 INFO L87 Difference]: Start difference. First operand 15994 states and 71566 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2022-03-01 17:20:19,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:19,620 INFO L93 Difference]: Finished difference Result 23161 states and 98055 transitions. [2022-03-01 17:20:19,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 17:20:19,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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 25 [2022-03-01 17:20:19,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:19,727 INFO L225 Difference]: With dead ends: 23161 [2022-03-01 17:20:19,727 INFO L226 Difference]: Without dead ends: 23070 [2022-03-01 17:20:19,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-03-01 17:20:19,727 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 216 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:19,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 144 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:19,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23070 states. [2022-03-01 17:20:20,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23070 to 16749. [2022-03-01 17:20:20,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16749 states, 16748 states have (on average 4.4525316455696204) internal successors, (74571), 16748 states have internal predecessors, (74571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:20,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16749 states to 16749 states and 74571 transitions. [2022-03-01 17:20:20,393 INFO L78 Accepts]: Start accepts. Automaton has 16749 states and 74571 transitions. Word has length 25 [2022-03-01 17:20:20,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:20,393 INFO L470 AbstractCegarLoop]: Abstraction has 16749 states and 74571 transitions. [2022-03-01 17:20:20,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2022-03-01 17:20:20,393 INFO L276 IsEmpty]: Start isEmpty. Operand 16749 states and 74571 transitions. [2022-03-01 17:20:20,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-01 17:20:20,426 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:20,426 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:20,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:20,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:20,627 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:20,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:20,628 INFO L85 PathProgramCache]: Analyzing trace with hash -818219675, now seen corresponding path program 13 times [2022-03-01 17:20:20,628 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:20,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043001990] [2022-03-01 17:20:20,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:20,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:20,687 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:20,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043001990] [2022-03-01 17:20:20,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043001990] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:20,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398759456] [2022-03-01 17:20:20,688 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:20:20,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:20,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:20,689 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) [2022-03-01 17:20:20,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-01 17:20:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:20,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 17:20:20,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:20,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:21,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398759456] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:21,086 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:21,086 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-03-01 17:20:21,086 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646336436] [2022-03-01 17:20:21,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:21,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:20:21,086 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:21,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:20:21,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:20:21,087 INFO L87 Difference]: Start difference. First operand 16749 states and 74571 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 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) [2022-03-01 17:20:21,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:21,398 INFO L93 Difference]: Finished difference Result 18350 states and 80380 transitions. [2022-03-01 17:20:21,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:20:21,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 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 27 [2022-03-01 17:20:21,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:21,608 INFO L225 Difference]: With dead ends: 18350 [2022-03-01 17:20:21,608 INFO L226 Difference]: Without dead ends: 18282 [2022-03-01 17:20:21,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:20:21,610 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 71 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:21,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 91 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:21,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18282 states. [2022-03-01 17:20:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18282 to 17368. [2022-03-01 17:20:22,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17368 states, 17367 states have (on average 4.438244947313871) internal successors, (77079), 17367 states have internal predecessors, (77079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:22,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17368 states to 17368 states and 77079 transitions. [2022-03-01 17:20:22,180 INFO L78 Accepts]: Start accepts. Automaton has 17368 states and 77079 transitions. Word has length 27 [2022-03-01 17:20:22,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:22,180 INFO L470 AbstractCegarLoop]: Abstraction has 17368 states and 77079 transitions. [2022-03-01 17:20:22,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 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) [2022-03-01 17:20:22,180 INFO L276 IsEmpty]: Start isEmpty. Operand 17368 states and 77079 transitions. [2022-03-01 17:20:22,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-01 17:20:22,221 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:22,221 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:22,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-03-01 17:20:22,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-03-01 17:20:22,421 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:22,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash -850989663, now seen corresponding path program 14 times [2022-03-01 17:20:22,422 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:22,422 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868433260] [2022-03-01 17:20:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:22,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:22,483 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:20:22,483 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:22,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868433260] [2022-03-01 17:20:22,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868433260] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:22,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591706970] [2022-03-01 17:20:22,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:20:22,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:22,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:22,485 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) [2022-03-01 17:20:22,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-01 17:20:22,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:20:22,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:22,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 17:20:22,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:22,825 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:22,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:22,957 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:20:22,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591706970] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:22,958 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:22,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 7 [2022-03-01 17:20:22,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811454086] [2022-03-01 17:20:22,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:22,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:22,958 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:22,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:22,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:22,959 INFO L87 Difference]: Start difference. First operand 17368 states and 77079 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 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) [2022-03-01 17:20:23,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:23,449 INFO L93 Difference]: Finished difference Result 19060 states and 83209 transitions. [2022-03-01 17:20:23,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 17:20:23,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 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 27 [2022-03-01 17:20:23,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:23,511 INFO L225 Difference]: With dead ends: 19060 [2022-03-01 17:20:23,511 INFO L226 Difference]: Without dead ends: 18924 [2022-03-01 17:20:23,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:23,512 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 88 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:23,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 106 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:23,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18924 states. [2022-03-01 17:20:23,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18924 to 17614. [2022-03-01 17:20:23,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17614 states, 17613 states have (on average 4.438199057514336) internal successors, (78170), 17613 states have internal predecessors, (78170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:24,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17614 states to 17614 states and 78170 transitions. [2022-03-01 17:20:24,005 INFO L78 Accepts]: Start accepts. Automaton has 17614 states and 78170 transitions. Word has length 27 [2022-03-01 17:20:24,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:24,005 INFO L470 AbstractCegarLoop]: Abstraction has 17614 states and 78170 transitions. [2022-03-01 17:20:24,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 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) [2022-03-01 17:20:24,006 INFO L276 IsEmpty]: Start isEmpty. Operand 17614 states and 78170 transitions. [2022-03-01 17:20:24,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-01 17:20:24,044 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:24,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:24,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-03-01 17:20:24,245 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,SelfDestructingSolverStorable32 [2022-03-01 17:20:24,245 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:24,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:24,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1826966111, now seen corresponding path program 1 times [2022-03-01 17:20:24,245 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:24,245 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726643510] [2022-03-01 17:20:24,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:24,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:24,310 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:24,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726643510] [2022-03-01 17:20:24,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726643510] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:24,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038273522] [2022-03-01 17:20:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:24,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:24,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:24,312 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) [2022-03-01 17:20:24,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-01 17:20:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:24,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 17:20:24,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:24,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:24,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:24,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:24,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038273522] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:24,776 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:24,776 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 7 [2022-03-01 17:20:24,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650769089] [2022-03-01 17:20:24,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:24,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:24,777 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:24,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:24,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:24,778 INFO L87 Difference]: Start difference. First operand 17614 states and 78170 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2022-03-01 17:20:25,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:25,275 INFO L93 Difference]: Finished difference Result 18637 states and 81676 transitions. [2022-03-01 17:20:25,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 17:20:25,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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 27 [2022-03-01 17:20:25,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:25,345 INFO L225 Difference]: With dead ends: 18637 [2022-03-01 17:20:25,345 INFO L226 Difference]: Without dead ends: 18269 [2022-03-01 17:20:25,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:25,345 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 54 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:25,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 105 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:25,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18269 states. [2022-03-01 17:20:25,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18269 to 17885. [2022-03-01 17:20:25,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17885 states, 17884 states have (on average 4.4198165958398565) internal successors, (79044), 17884 states have internal predecessors, (79044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17885 states to 17885 states and 79044 transitions. [2022-03-01 17:20:25,971 INFO L78 Accepts]: Start accepts. Automaton has 17885 states and 79044 transitions. Word has length 27 [2022-03-01 17:20:25,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:25,971 INFO L470 AbstractCegarLoop]: Abstraction has 17885 states and 79044 transitions. [2022-03-01 17:20:25,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2022-03-01 17:20:25,972 INFO L276 IsEmpty]: Start isEmpty. Operand 17885 states and 79044 transitions. [2022-03-01 17:20:26,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-01 17:20:26,012 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:26,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:26,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:26,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:26,212 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:26,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:26,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1766241133, now seen corresponding path program 2 times [2022-03-01 17:20:26,213 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:26,213 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809554707] [2022-03-01 17:20:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:26,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:20:26,287 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:26,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809554707] [2022-03-01 17:20:26,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809554707] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:26,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609236842] [2022-03-01 17:20:26,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:20:26,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:26,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:26,288 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) [2022-03-01 17:20:26,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-01 17:20:26,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:20:26,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:26,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 17:20:26,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:26,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:26,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:20:26,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609236842] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:26,670 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:26,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 7 [2022-03-01 17:20:26,670 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168769236] [2022-03-01 17:20:26,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:26,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:26,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:26,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:26,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:26,671 INFO L87 Difference]: Start difference. First operand 17885 states and 79044 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 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) [2022-03-01 17:20:26,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:26,940 INFO L93 Difference]: Finished difference Result 18717 states and 81967 transitions. [2022-03-01 17:20:26,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 17:20:26,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 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 27 [2022-03-01 17:20:26,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:26,997 INFO L225 Difference]: With dead ends: 18717 [2022-03-01 17:20:26,998 INFO L226 Difference]: Without dead ends: 18403 [2022-03-01 17:20:26,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:26,998 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 67 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:26,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 81 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:27,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18403 states. [2022-03-01 17:20:27,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18403 to 17947. [2022-03-01 17:20:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17947 states, 17946 states have (on average 4.425554441101081) internal successors, (79421), 17946 states have internal predecessors, (79421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:27,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17947 states to 17947 states and 79421 transitions. [2022-03-01 17:20:27,534 INFO L78 Accepts]: Start accepts. Automaton has 17947 states and 79421 transitions. Word has length 27 [2022-03-01 17:20:27,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:27,534 INFO L470 AbstractCegarLoop]: Abstraction has 17947 states and 79421 transitions. [2022-03-01 17:20:27,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 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) [2022-03-01 17:20:27,534 INFO L276 IsEmpty]: Start isEmpty. Operand 17947 states and 79421 transitions. [2022-03-01 17:20:27,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-01 17:20:27,706 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:27,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:27,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:27,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:27,907 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:27,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:27,907 INFO L85 PathProgramCache]: Analyzing trace with hash -29963743, now seen corresponding path program 3 times [2022-03-01 17:20:27,907 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:27,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25964415] [2022-03-01 17:20:27,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:27,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:20:27,972 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:27,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25964415] [2022-03-01 17:20:27,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25964415] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:27,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046205227] [2022-03-01 17:20:27,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:20:27,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:27,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:27,974 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) [2022-03-01 17:20:27,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-01 17:20:27,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:20:27,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:27,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 17:20:27,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:28,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:20:28,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046205227] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:28,424 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:28,424 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-03-01 17:20:28,424 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085473902] [2022-03-01 17:20:28,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:28,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:20:28,424 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:28,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:20:28,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:20:28,425 INFO L87 Difference]: Start difference. First operand 17947 states and 79421 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 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) [2022-03-01 17:20:28,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:28,763 INFO L93 Difference]: Finished difference Result 18527 states and 81623 transitions. [2022-03-01 17:20:28,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:20:28,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 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 27 [2022-03-01 17:20:28,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:28,825 INFO L225 Difference]: With dead ends: 18527 [2022-03-01 17:20:28,825 INFO L226 Difference]: Without dead ends: 18379 [2022-03-01 17:20:28,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 10 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:20:28,826 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 41 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:28,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 82 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:28,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18379 states. [2022-03-01 17:20:29,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18379 to 18247. [2022-03-01 17:20:29,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18247 states, 18246 states have (on average 4.422942014688151) internal successors, (80701), 18246 states have internal predecessors, (80701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:29,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18247 states to 18247 states and 80701 transitions. [2022-03-01 17:20:29,396 INFO L78 Accepts]: Start accepts. Automaton has 18247 states and 80701 transitions. Word has length 27 [2022-03-01 17:20:29,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:29,396 INFO L470 AbstractCegarLoop]: Abstraction has 18247 states and 80701 transitions. [2022-03-01 17:20:29,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 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) [2022-03-01 17:20:29,396 INFO L276 IsEmpty]: Start isEmpty. Operand 18247 states and 80701 transitions. [2022-03-01 17:20:29,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-01 17:20:29,443 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:29,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:29,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:29,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:29,644 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:29,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:29,645 INFO L85 PathProgramCache]: Analyzing trace with hash 175276469, now seen corresponding path program 4 times [2022-03-01 17:20:29,645 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:29,645 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002984107] [2022-03-01 17:20:29,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:29,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:29,710 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:29,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002984107] [2022-03-01 17:20:29,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002984107] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:29,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348050937] [2022-03-01 17:20:29,710 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:20:29,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:29,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:29,712 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) [2022-03-01 17:20:29,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-01 17:20:29,861 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:20:29,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:29,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 17:20:29,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:30,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:30,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:30,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:30,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348050937] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:30,255 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:30,255 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 7 [2022-03-01 17:20:30,255 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686236747] [2022-03-01 17:20:30,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:30,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:30,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:30,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:30,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:30,256 INFO L87 Difference]: Start difference. First operand 18247 states and 80701 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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) [2022-03-01 17:20:30,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:30,592 INFO L93 Difference]: Finished difference Result 19257 states and 84104 transitions. [2022-03-01 17:20:30,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 17:20:30,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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 27 [2022-03-01 17:20:30,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:30,653 INFO L225 Difference]: With dead ends: 19257 [2022-03-01 17:20:30,653 INFO L226 Difference]: Without dead ends: 18829 [2022-03-01 17:20:30,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:30,654 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 58 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:30,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 105 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:30,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18829 states. [2022-03-01 17:20:31,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18829 to 17865. [2022-03-01 17:20:31,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17865 states, 17864 states have (on average 4.420286609941782) internal successors, (78964), 17864 states have internal predecessors, (78964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17865 states to 17865 states and 78964 transitions. [2022-03-01 17:20:31,157 INFO L78 Accepts]: Start accepts. Automaton has 17865 states and 78964 transitions. Word has length 27 [2022-03-01 17:20:31,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:31,157 INFO L470 AbstractCegarLoop]: Abstraction has 17865 states and 78964 transitions. [2022-03-01 17:20:31,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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) [2022-03-01 17:20:31,157 INFO L276 IsEmpty]: Start isEmpty. Operand 17865 states and 78964 transitions. [2022-03-01 17:20:31,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-01 17:20:31,194 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:31,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:31,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:31,394 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,SelfDestructingSolverStorable36 [2022-03-01 17:20:31,395 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:31,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:31,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1757100517, now seen corresponding path program 5 times [2022-03-01 17:20:31,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:31,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759779413] [2022-03-01 17:20:31,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:31,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:31,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:31,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759779413] [2022-03-01 17:20:31,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759779413] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:31,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337694635] [2022-03-01 17:20:31,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:20:31,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:31,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:31,454 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) [2022-03-01 17:20:31,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-01 17:20:31,476 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 17:20:31,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:31,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 17:20:31,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:31,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:31,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:31,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:31,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337694635] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:31,990 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:31,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-03-01 17:20:31,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765512091] [2022-03-01 17:20:31,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:31,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:20:31,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:31,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:20:31,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:20:31,992 INFO L87 Difference]: Start difference. First operand 17865 states and 78964 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 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) [2022-03-01 17:20:32,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:32,273 INFO L93 Difference]: Finished difference Result 18645 states and 81768 transitions. [2022-03-01 17:20:32,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:20:32,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 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 27 [2022-03-01 17:20:32,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:32,331 INFO L225 Difference]: With dead ends: 18645 [2022-03-01 17:20:32,331 INFO L226 Difference]: Without dead ends: 18497 [2022-03-01 17:20:32,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 10 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:20:32,332 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 37 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:32,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 65 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:32,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18497 states. [2022-03-01 17:20:32,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18497 to 18081. [2022-03-01 17:20:32,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18081 states, 18080 states have (on average 4.419358407079646) internal successors, (79902), 18080 states have internal predecessors, (79902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:32,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18081 states to 18081 states and 79902 transitions. [2022-03-01 17:20:32,836 INFO L78 Accepts]: Start accepts. Automaton has 18081 states and 79902 transitions. Word has length 27 [2022-03-01 17:20:32,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:32,837 INFO L470 AbstractCegarLoop]: Abstraction has 18081 states and 79902 transitions. [2022-03-01 17:20:32,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 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) [2022-03-01 17:20:32,837 INFO L276 IsEmpty]: Start isEmpty. Operand 18081 states and 79902 transitions. [2022-03-01 17:20:32,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-01 17:20:32,878 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:32,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:32,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-01 17:20:33,078 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,SelfDestructingSolverStorable37 [2022-03-01 17:20:33,078 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:33,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:33,079 INFO L85 PathProgramCache]: Analyzing trace with hash -332468451, now seen corresponding path program 6 times [2022-03-01 17:20:33,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:33,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065647690] [2022-03-01 17:20:33,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:33,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:20:33,149 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:33,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065647690] [2022-03-01 17:20:33,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065647690] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:33,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768846277] [2022-03-01 17:20:33,149 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:20:33,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:33,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:33,150 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) [2022-03-01 17:20:33,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-01 17:20:33,176 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 17:20:33,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:33,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 17:20:33,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:33,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:20:33,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768846277] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:33,551 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:33,551 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 7 [2022-03-01 17:20:33,551 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400539803] [2022-03-01 17:20:33,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:33,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:33,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:33,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:33,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:33,552 INFO L87 Difference]: Start difference. First operand 18081 states and 79902 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 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) [2022-03-01 17:20:33,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:33,978 INFO L93 Difference]: Finished difference Result 19216 states and 83740 transitions. [2022-03-01 17:20:33,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 17:20:33,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 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 27 [2022-03-01 17:20:33,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:34,041 INFO L225 Difference]: With dead ends: 19216 [2022-03-01 17:20:34,041 INFO L226 Difference]: Without dead ends: 18872 [2022-03-01 17:20:34,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:34,043 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 50 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:34,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 107 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:34,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18872 states. [2022-03-01 17:20:34,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18872 to 18104. [2022-03-01 17:20:34,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18104 states, 18103 states have (on average 4.404131911837817) internal successors, (79728), 18103 states have internal predecessors, (79728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:34,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18104 states to 18104 states and 79728 transitions. [2022-03-01 17:20:34,568 INFO L78 Accepts]: Start accepts. Automaton has 18104 states and 79728 transitions. Word has length 27 [2022-03-01 17:20:34,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:34,569 INFO L470 AbstractCegarLoop]: Abstraction has 18104 states and 79728 transitions. [2022-03-01 17:20:34,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 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) [2022-03-01 17:20:34,569 INFO L276 IsEmpty]: Start isEmpty. Operand 18104 states and 79728 transitions. [2022-03-01 17:20:34,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-01 17:20:34,610 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:34,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:34,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:34,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-01 17:20:34,810 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:34,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:34,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1609977505, now seen corresponding path program 7 times [2022-03-01 17:20:34,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:34,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334687093] [2022-03-01 17:20:34,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:34,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:34,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-01 17:20:34,876 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:34,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334687093] [2022-03-01 17:20:34,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334687093] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:20:34,876 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:20:34,876 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-01 17:20:34,876 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679926217] [2022-03-01 17:20:34,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:20:34,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 17:20:34,876 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:34,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 17:20:34,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:20:34,877 INFO L87 Difference]: Start difference. First operand 18104 states and 79728 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 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) [2022-03-01 17:20:35,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:35,085 INFO L93 Difference]: Finished difference Result 18918 states and 82588 transitions. [2022-03-01 17:20:35,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 17:20:35,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 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 27 [2022-03-01 17:20:35,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:35,148 INFO L225 Difference]: With dead ends: 18918 [2022-03-01 17:20:35,148 INFO L226 Difference]: Without dead ends: 18720 [2022-03-01 17:20:35,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:20:35,148 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:35,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 39 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:20:35,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18720 states. [2022-03-01 17:20:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18720 to 18128. [2022-03-01 17:20:35,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18128 states, 18127 states have (on average 4.411871793457274) internal successors, (79974), 18127 states have internal predecessors, (79974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18128 states to 18128 states and 79974 transitions. [2022-03-01 17:20:35,688 INFO L78 Accepts]: Start accepts. Automaton has 18128 states and 79974 transitions. Word has length 27 [2022-03-01 17:20:35,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:35,688 INFO L470 AbstractCegarLoop]: Abstraction has 18128 states and 79974 transitions. [2022-03-01 17:20:35,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 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) [2022-03-01 17:20:35,689 INFO L276 IsEmpty]: Start isEmpty. Operand 18128 states and 79974 transitions. [2022-03-01 17:20:35,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-01 17:20:35,730 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:35,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:35,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-01 17:20:35,731 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:35,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:35,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1434619345, now seen corresponding path program 8 times [2022-03-01 17:20:35,731 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:35,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118812888] [2022-03-01 17:20:35,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:35,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:20:35,796 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:35,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118812888] [2022-03-01 17:20:35,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118812888] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:35,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608619298] [2022-03-01 17:20:35,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:20:35,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:35,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:35,797 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) [2022-03-01 17:20:35,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-01 17:20:35,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:20:35,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:35,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 17:20:35,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:36,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:20:36,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608619298] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:36,366 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:36,366 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-03-01 17:20:36,366 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425571269] [2022-03-01 17:20:36,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:36,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:20:36,367 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:36,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:20:36,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:20:36,368 INFO L87 Difference]: Start difference. First operand 18128 states and 79974 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 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) [2022-03-01 17:20:36,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:36,661 INFO L93 Difference]: Finished difference Result 18732 states and 82218 transitions. [2022-03-01 17:20:36,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:20:36,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 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 27 [2022-03-01 17:20:36,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:36,732 INFO L225 Difference]: With dead ends: 18732 [2022-03-01 17:20:36,732 INFO L226 Difference]: Without dead ends: 18600 [2022-03-01 17:20:36,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 10 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:20:36,735 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 37 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:36,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 73 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:36,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18600 states. [2022-03-01 17:20:37,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18600 to 18396. [2022-03-01 17:20:37,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18396 states, 18395 states have (on average 4.410220168524056) internal successors, (81126), 18395 states have internal predecessors, (81126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:37,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18396 states to 18396 states and 81126 transitions. [2022-03-01 17:20:37,245 INFO L78 Accepts]: Start accepts. Automaton has 18396 states and 81126 transitions. Word has length 27 [2022-03-01 17:20:37,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:37,245 INFO L470 AbstractCegarLoop]: Abstraction has 18396 states and 81126 transitions. [2022-03-01 17:20:37,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 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) [2022-03-01 17:20:37,245 INFO L276 IsEmpty]: Start isEmpty. Operand 18396 states and 81126 transitions. [2022-03-01 17:20:37,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-01 17:20:37,286 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:37,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:37,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-03-01 17:20:37,486 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,SelfDestructingSolverStorable40 [2022-03-01 17:20:37,487 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:37,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:37,487 INFO L85 PathProgramCache]: Analyzing trace with hash 769255917, now seen corresponding path program 9 times [2022-03-01 17:20:37,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:37,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530751101] [2022-03-01 17:20:37,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:37,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:37,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:20:37,558 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:37,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530751101] [2022-03-01 17:20:37,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530751101] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:37,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958741565] [2022-03-01 17:20:37,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:20:37,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:37,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:37,560 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) [2022-03-01 17:20:37,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-01 17:20:37,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:20:37,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:37,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 17:20:37,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:37,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:20:37,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958741565] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:37,986 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:37,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 7 [2022-03-01 17:20:37,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816421461] [2022-03-01 17:20:37,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:37,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:37,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:37,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:37,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:37,987 INFO L87 Difference]: Start difference. First operand 18396 states and 81126 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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) [2022-03-01 17:20:38,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:38,479 INFO L93 Difference]: Finished difference Result 19604 states and 85164 transitions. [2022-03-01 17:20:38,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 17:20:38,481 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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 27 [2022-03-01 17:20:38,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:38,548 INFO L225 Difference]: With dead ends: 19604 [2022-03-01 17:20:38,548 INFO L226 Difference]: Without dead ends: 19208 [2022-03-01 17:20:38,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:38,549 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 55 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:38,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 119 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:20:38,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19208 states. [2022-03-01 17:20:39,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19208 to 18044. [2022-03-01 17:20:39,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18044 states, 18043 states have (on average 4.406916809843152) internal successors, (79514), 18043 states have internal predecessors, (79514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:39,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18044 states to 18044 states and 79514 transitions. [2022-03-01 17:20:39,106 INFO L78 Accepts]: Start accepts. Automaton has 18044 states and 79514 transitions. Word has length 27 [2022-03-01 17:20:39,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:39,106 INFO L470 AbstractCegarLoop]: Abstraction has 18044 states and 79514 transitions. [2022-03-01 17:20:39,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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) [2022-03-01 17:20:39,106 INFO L276 IsEmpty]: Start isEmpty. Operand 18044 states and 79514 transitions. [2022-03-01 17:20:39,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-01 17:20:39,148 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:39,148 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:39,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-03-01 17:20:39,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:39,358 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:39,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:39,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1784277025, now seen corresponding path program 15 times [2022-03-01 17:20:39,358 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:39,359 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058233590] [2022-03-01 17:20:39,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:39,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:20:39,411 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:39,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058233590] [2022-03-01 17:20:39,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058233590] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:39,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994393517] [2022-03-01 17:20:39,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:20:39,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:39,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:39,412 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) [2022-03-01 17:20:39,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-01 17:20:39,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:20:39,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:39,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 17:20:39,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:39,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:39,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:20:39,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994393517] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:39,772 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:39,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-03-01 17:20:39,772 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465786933] [2022-03-01 17:20:39,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:39,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:20:39,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:39,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:20:39,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:20:39,773 INFO L87 Difference]: Start difference. First operand 18044 states and 79514 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 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) [2022-03-01 17:20:40,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:40,046 INFO L93 Difference]: Finished difference Result 19592 states and 85134 transitions. [2022-03-01 17:20:40,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:20:40,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 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 27 [2022-03-01 17:20:40,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:40,303 INFO L225 Difference]: With dead ends: 19592 [2022-03-01 17:20:40,304 INFO L226 Difference]: Without dead ends: 19524 [2022-03-01 17:20:40,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:20:40,304 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 67 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:40,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 79 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:40,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19524 states. [2022-03-01 17:20:40,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19524 to 18554. [2022-03-01 17:20:40,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18554 states, 18553 states have (on average 4.396647442462135) internal successors, (81571), 18553 states have internal predecessors, (81571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:40,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18554 states to 18554 states and 81571 transitions. [2022-03-01 17:20:40,902 INFO L78 Accepts]: Start accepts. Automaton has 18554 states and 81571 transitions. Word has length 27 [2022-03-01 17:20:40,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:40,903 INFO L470 AbstractCegarLoop]: Abstraction has 18554 states and 81571 transitions. [2022-03-01 17:20:40,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 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) [2022-03-01 17:20:40,903 INFO L276 IsEmpty]: Start isEmpty. Operand 18554 states and 81571 transitions. [2022-03-01 17:20:40,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-01 17:20:40,958 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:40,958 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:40,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:41,158 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,SelfDestructingSolverStorable42 [2022-03-01 17:20:41,159 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:41,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:41,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1862975263, now seen corresponding path program 13 times [2022-03-01 17:20:41,159 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:41,159 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561445937] [2022-03-01 17:20:41,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:41,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:41,219 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:41,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561445937] [2022-03-01 17:20:41,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561445937] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:41,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764629373] [2022-03-01 17:20:41,219 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:20:41,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:41,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:41,220 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) [2022-03-01 17:20:41,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-01 17:20:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:41,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 17:20:41,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:41,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:41,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:41,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764629373] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:41,566 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:41,567 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-03-01 17:20:41,567 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533132469] [2022-03-01 17:20:41,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:41,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:20:41,567 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:41,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:20:41,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:20:41,567 INFO L87 Difference]: Start difference. First operand 18554 states and 81571 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 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) [2022-03-01 17:20:41,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:41,852 INFO L93 Difference]: Finished difference Result 20100 states and 87095 transitions. [2022-03-01 17:20:41,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:20:41,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 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 27 [2022-03-01 17:20:41,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:41,918 INFO L225 Difference]: With dead ends: 20100 [2022-03-01 17:20:41,918 INFO L226 Difference]: Without dead ends: 20049 [2022-03-01 17:20:41,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:20:41,918 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 63 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:41,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 94 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:41,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20049 states. [2022-03-01 17:20:42,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20049 to 19378. [2022-03-01 17:20:42,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19378 states, 19377 states have (on average 4.372555091087372) internal successors, (84727), 19377 states have internal predecessors, (84727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:42,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19378 states to 19378 states and 84727 transitions. [2022-03-01 17:20:42,449 INFO L78 Accepts]: Start accepts. Automaton has 19378 states and 84727 transitions. Word has length 27 [2022-03-01 17:20:42,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:42,449 INFO L470 AbstractCegarLoop]: Abstraction has 19378 states and 84727 transitions. [2022-03-01 17:20:42,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 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) [2022-03-01 17:20:42,449 INFO L276 IsEmpty]: Start isEmpty. Operand 19378 states and 84727 transitions. [2022-03-01 17:20:42,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-01 17:20:42,491 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:42,491 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:42,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-03-01 17:20:42,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:42,692 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:42,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:42,692 INFO L85 PathProgramCache]: Analyzing trace with hash 932751691, now seen corresponding path program 14 times [2022-03-01 17:20:42,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:42,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152867527] [2022-03-01 17:20:42,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:42,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:20:42,736 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:42,736 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152867527] [2022-03-01 17:20:42,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152867527] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:42,736 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087987388] [2022-03-01 17:20:42,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:20:42,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:42,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:42,737 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) [2022-03-01 17:20:42,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-01 17:20:42,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:20:42,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:42,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 17:20:42,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:43,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:43,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:20:43,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087987388] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:43,270 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:43,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 7 [2022-03-01 17:20:43,270 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421122216] [2022-03-01 17:20:43,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:43,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:20:43,271 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:43,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:20:43,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:43,271 INFO L87 Difference]: Start difference. First operand 19378 states and 84727 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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) [2022-03-01 17:20:43,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:43,584 INFO L93 Difference]: Finished difference Result 20827 states and 89877 transitions. [2022-03-01 17:20:43,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 17:20:43,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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 27 [2022-03-01 17:20:43,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:43,651 INFO L225 Difference]: With dead ends: 20827 [2022-03-01 17:20:43,651 INFO L226 Difference]: Without dead ends: 20725 [2022-03-01 17:20:43,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:20:43,652 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 80 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:43,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 100 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:43,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20725 states. [2022-03-01 17:20:44,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20725 to 19777. [2022-03-01 17:20:44,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19777 states, 19776 states have (on average 4.364229368932039) internal successors, (86307), 19776 states have internal predecessors, (86307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19777 states to 19777 states and 86307 transitions. [2022-03-01 17:20:44,241 INFO L78 Accepts]: Start accepts. Automaton has 19777 states and 86307 transitions. Word has length 27 [2022-03-01 17:20:44,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:44,241 INFO L470 AbstractCegarLoop]: Abstraction has 19777 states and 86307 transitions. [2022-03-01 17:20:44,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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) [2022-03-01 17:20:44,241 INFO L276 IsEmpty]: Start isEmpty. Operand 19777 states and 86307 transitions. [2022-03-01 17:20:44,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-01 17:20:44,284 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:44,284 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:44,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:44,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-03-01 17:20:44,484 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:44,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:44,485 INFO L85 PathProgramCache]: Analyzing trace with hash -534835761, now seen corresponding path program 15 times [2022-03-01 17:20:44,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:44,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208850189] [2022-03-01 17:20:44,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:44,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:44,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:20:44,535 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:44,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208850189] [2022-03-01 17:20:44,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208850189] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:44,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107091237] [2022-03-01 17:20:44,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:20:44,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:44,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:44,537 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) [2022-03-01 17:20:44,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-01 17:20:44,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:20:44,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:44,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 17:20:44,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:44,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:45,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:20:45,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107091237] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:45,077 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:45,077 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-03-01 17:20:45,077 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027657744] [2022-03-01 17:20:45,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:45,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:20:45,078 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:45,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:20:45,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:20:45,078 INFO L87 Difference]: Start difference. First operand 19777 states and 86307 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 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) [2022-03-01 17:20:45,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:45,372 INFO L93 Difference]: Finished difference Result 21148 states and 91258 transitions. [2022-03-01 17:20:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:20:45,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 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 27 [2022-03-01 17:20:45,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:45,438 INFO L225 Difference]: With dead ends: 21148 [2022-03-01 17:20:45,439 INFO L226 Difference]: Without dead ends: 21097 [2022-03-01 17:20:45,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:20:45,439 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 63 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:45,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 94 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:20:45,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21097 states. [2022-03-01 17:20:45,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21097 to 20386. [2022-03-01 17:20:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20386 states, 20385 states have (on average 4.351925435369144) internal successors, (88714), 20385 states have internal predecessors, (88714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:45,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20386 states to 20386 states and 88714 transitions. [2022-03-01 17:20:45,987 INFO L78 Accepts]: Start accepts. Automaton has 20386 states and 88714 transitions. Word has length 27 [2022-03-01 17:20:45,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:45,987 INFO L470 AbstractCegarLoop]: Abstraction has 20386 states and 88714 transitions. [2022-03-01 17:20:45,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 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) [2022-03-01 17:20:45,988 INFO L276 IsEmpty]: Start isEmpty. Operand 20386 states and 88714 transitions. [2022-03-01 17:20:46,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:20:46,033 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:46,034 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:46,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-03-01 17:20:46,234 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,SelfDestructingSolverStorable45 [2022-03-01 17:20:46,234 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:46,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:46,235 INFO L85 PathProgramCache]: Analyzing trace with hash 136448359, now seen corresponding path program 16 times [2022-03-01 17:20:46,235 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:46,235 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464281921] [2022-03-01 17:20:46,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:46,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:46,278 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:46,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464281921] [2022-03-01 17:20:46,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464281921] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:46,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903966604] [2022-03-01 17:20:46,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:20:46,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:46,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:46,280 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) [2022-03-01 17:20:46,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-01 17:20:46,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:20:46,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:46,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:20:46,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:46,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:46,485 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:46,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903966604] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:46,485 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:46,485 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-01 17:20:46,485 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836716663] [2022-03-01 17:20:46,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:46,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:20:46,486 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:46,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:20:46,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:20:46,486 INFO L87 Difference]: Start difference. First operand 20386 states and 88714 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 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) [2022-03-01 17:20:47,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:47,964 INFO L93 Difference]: Finished difference Result 53500 states and 225350 transitions. [2022-03-01 17:20:47,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 17:20:47,964 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 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 29 [2022-03-01 17:20:47,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:48,180 INFO L225 Difference]: With dead ends: 53500 [2022-03-01 17:20:48,180 INFO L226 Difference]: Without dead ends: 53500 [2022-03-01 17:20:48,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=1400, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 17:20:48,181 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 291 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:48,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 685 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:20:48,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53500 states. [2022-03-01 17:20:49,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53500 to 19796. [2022-03-01 17:20:49,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19796 states, 19795 states have (on average 4.3231624147512) internal successors, (85577), 19795 states have internal predecessors, (85577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19796 states to 19796 states and 85577 transitions. [2022-03-01 17:20:49,263 INFO L78 Accepts]: Start accepts. Automaton has 19796 states and 85577 transitions. Word has length 29 [2022-03-01 17:20:49,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:49,263 INFO L470 AbstractCegarLoop]: Abstraction has 19796 states and 85577 transitions. [2022-03-01 17:20:49,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 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) [2022-03-01 17:20:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand 19796 states and 85577 transitions. [2022-03-01 17:20:49,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:20:49,306 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:49,306 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:49,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-03-01 17:20:49,507 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,SelfDestructingSolverStorable46 [2022-03-01 17:20:49,507 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:49,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:49,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1636435097, now seen corresponding path program 17 times [2022-03-01 17:20:49,507 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:49,508 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528710373] [2022-03-01 17:20:49,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:49,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:49,546 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:49,546 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528710373] [2022-03-01 17:20:49,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528710373] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:49,546 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129761441] [2022-03-01 17:20:49,546 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:20:49,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:49,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:49,547 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) [2022-03-01 17:20:49,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-01 17:20:49,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 17:20:49,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:49,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:20:49,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:49,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:49,714 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:49,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129761441] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:49,714 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:49,714 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-01 17:20:49,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646113300] [2022-03-01 17:20:49,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:49,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:20:49,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:49,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:20:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:20:49,715 INFO L87 Difference]: Start difference. First operand 19796 states and 85577 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 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) [2022-03-01 17:20:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:50,654 INFO L93 Difference]: Finished difference Result 43808 states and 178847 transitions. [2022-03-01 17:20:50,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 17:20:50,655 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 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 29 [2022-03-01 17:20:50,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:50,843 INFO L225 Difference]: With dead ends: 43808 [2022-03-01 17:20:50,843 INFO L226 Difference]: Without dead ends: 43528 [2022-03-01 17:20:50,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 17:20:50,844 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 569 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:50,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 282 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:20:50,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43528 states. [2022-03-01 17:20:51,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43528 to 24598. [2022-03-01 17:20:51,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24598 states, 24597 states have (on average 4.382323047526121) internal successors, (107792), 24597 states have internal predecessors, (107792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:51,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24598 states to 24598 states and 107792 transitions. [2022-03-01 17:20:51,700 INFO L78 Accepts]: Start accepts. Automaton has 24598 states and 107792 transitions. Word has length 29 [2022-03-01 17:20:51,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:51,700 INFO L470 AbstractCegarLoop]: Abstraction has 24598 states and 107792 transitions. [2022-03-01 17:20:51,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 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) [2022-03-01 17:20:51,701 INFO L276 IsEmpty]: Start isEmpty. Operand 24598 states and 107792 transitions. [2022-03-01 17:20:51,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:20:51,759 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:51,759 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:51,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:51,959 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,SelfDestructingSolverStorable47 [2022-03-01 17:20:51,959 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:51,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:51,960 INFO L85 PathProgramCache]: Analyzing trace with hash -115245213, now seen corresponding path program 18 times [2022-03-01 17:20:51,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:51,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735951801] [2022-03-01 17:20:51,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:51,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:52,193 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:52,193 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735951801] [2022-03-01 17:20:52,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735951801] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:52,193 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857543834] [2022-03-01 17:20:52,193 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:20:52,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:52,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:52,204 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) [2022-03-01 17:20:52,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-01 17:20:52,233 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 17:20:52,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:52,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:20:52,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:52,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:52,411 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:52,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857543834] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:52,411 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:52,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-01 17:20:52,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570670831] [2022-03-01 17:20:52,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:52,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:20:52,412 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:52,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:20:52,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:20:52,413 INFO L87 Difference]: Start difference. First operand 24598 states and 107792 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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) [2022-03-01 17:20:53,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:53,161 INFO L93 Difference]: Finished difference Result 44391 states and 182619 transitions. [2022-03-01 17:20:53,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 17:20:53,161 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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 29 [2022-03-01 17:20:53,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:53,324 INFO L225 Difference]: With dead ends: 44391 [2022-03-01 17:20:53,324 INFO L226 Difference]: Without dead ends: 44391 [2022-03-01 17:20:53,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2022-03-01 17:20:53,325 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 424 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:53,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 295 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:20:53,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44391 states. [2022-03-01 17:20:54,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44391 to 24443. [2022-03-01 17:20:54,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24443 states, 24442 states have (on average 4.371900826446281) internal successors, (106858), 24442 states have internal predecessors, (106858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:54,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24443 states to 24443 states and 106858 transitions. [2022-03-01 17:20:54,332 INFO L78 Accepts]: Start accepts. Automaton has 24443 states and 106858 transitions. Word has length 29 [2022-03-01 17:20:54,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:54,332 INFO L470 AbstractCegarLoop]: Abstraction has 24443 states and 106858 transitions. [2022-03-01 17:20:54,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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) [2022-03-01 17:20:54,332 INFO L276 IsEmpty]: Start isEmpty. Operand 24443 states and 106858 transitions. [2022-03-01 17:20:54,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:20:54,392 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:54,392 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:54,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-03-01 17:20:54,593 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,SelfDestructingSolverStorable48 [2022-03-01 17:20:54,593 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:54,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:54,593 INFO L85 PathProgramCache]: Analyzing trace with hash 331365663, now seen corresponding path program 19 times [2022-03-01 17:20:54,594 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:54,594 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058762976] [2022-03-01 17:20:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:54,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:54,627 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:54,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058762976] [2022-03-01 17:20:54,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058762976] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:54,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923033073] [2022-03-01 17:20:54,627 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:20:54,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:54,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:54,628 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) [2022-03-01 17:20:54,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-01 17:20:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:54,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:20:54,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:54,732 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:54,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:54,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923033073] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:54,782 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:54,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-01 17:20:54,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008906046] [2022-03-01 17:20:54,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:54,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:20:54,783 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:54,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:20:54,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:20:54,783 INFO L87 Difference]: Start difference. First operand 24443 states and 106858 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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) [2022-03-01 17:20:55,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:55,594 INFO L93 Difference]: Finished difference Result 32700 states and 137404 transitions. [2022-03-01 17:20:55,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 17:20:55,594 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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 29 [2022-03-01 17:20:55,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:55,716 INFO L225 Difference]: With dead ends: 32700 [2022-03-01 17:20:55,716 INFO L226 Difference]: Without dead ends: 32680 [2022-03-01 17:20:55,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-03-01 17:20:55,717 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 221 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:55,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 441 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:20:55,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32680 states. [2022-03-01 17:20:56,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32680 to 24521. [2022-03-01 17:20:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24521 states, 24520 states have (on average 4.369453507340946) internal successors, (107139), 24520 states have internal predecessors, (107139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:20:56,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24521 states to 24521 states and 107139 transitions. [2022-03-01 17:20:56,485 INFO L78 Accepts]: Start accepts. Automaton has 24521 states and 107139 transitions. Word has length 29 [2022-03-01 17:20:56,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:20:56,485 INFO L470 AbstractCegarLoop]: Abstraction has 24521 states and 107139 transitions. [2022-03-01 17:20:56,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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) [2022-03-01 17:20:56,486 INFO L276 IsEmpty]: Start isEmpty. Operand 24521 states and 107139 transitions. [2022-03-01 17:20:56,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:20:56,541 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:20:56,541 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:20:56,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-01 17:20:56,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-03-01 17:20:56,742 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:20:56,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:20:56,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1556022237, now seen corresponding path program 20 times [2022-03-01 17:20:56,742 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:20:56,743 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389093887] [2022-03-01 17:20:56,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:20:56,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:20:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:20:56,773 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:56,773 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:20:56,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389093887] [2022-03-01 17:20:56,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389093887] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:20:56,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698980082] [2022-03-01 17:20:56,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:20:56,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:20:56,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:20:56,775 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) [2022-03-01 17:20:56,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-01 17:20:56,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:20:56,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:20:56,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:20:56,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:20:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:20:56,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:20:56,938 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:20:56,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698980082] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:20:56,938 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:20:56,938 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-03-01 17:20:56,938 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073243166] [2022-03-01 17:20:56,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:20:56,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:20:56,939 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:20:56,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:20:56,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:20:56,939 INFO L87 Difference]: Start difference. First operand 24521 states and 107139 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 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) [2022-03-01 17:20:58,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:20:58,077 INFO L93 Difference]: Finished difference Result 84322 states and 354953 transitions. [2022-03-01 17:20:58,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-01 17:20:58,077 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 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 29 [2022-03-01 17:20:58,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:20:59,062 INFO L225 Difference]: With dead ends: 84322 [2022-03-01 17:20:59,062 INFO L226 Difference]: Without dead ends: 84322 [2022-03-01 17:20:59,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-03-01 17:20:59,067 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 481 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:20:59,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 293 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:20:59,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84322 states. [2022-03-01 17:21:00,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84322 to 31834. [2022-03-01 17:21:00,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31834 states, 31833 states have (on average 4.49231929130148) internal successors, (143004), 31833 states have internal predecessors, (143004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:01,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31834 states to 31834 states and 143004 transitions. [2022-03-01 17:21:01,012 INFO L78 Accepts]: Start accepts. Automaton has 31834 states and 143004 transitions. Word has length 29 [2022-03-01 17:21:01,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:01,013 INFO L470 AbstractCegarLoop]: Abstraction has 31834 states and 143004 transitions. [2022-03-01 17:21:01,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 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) [2022-03-01 17:21:01,013 INFO L276 IsEmpty]: Start isEmpty. Operand 31834 states and 143004 transitions. [2022-03-01 17:21:01,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:01,086 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:01,086 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:01,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-01 17:21:01,286 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,SelfDestructingSolverStorable50 [2022-03-01 17:21:01,287 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:01,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:01,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1231344803, now seen corresponding path program 21 times [2022-03-01 17:21:01,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:01,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778893290] [2022-03-01 17:21:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:01,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:01,322 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:01,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778893290] [2022-03-01 17:21:01,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778893290] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:01,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698432225] [2022-03-01 17:21:01,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:21:01,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:01,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:01,324 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) [2022-03-01 17:21:01,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-01 17:21:01,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 17:21:01,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:21:01,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:01,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:01,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:21:01,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698432225] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:01,477 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:01,477 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-03-01 17:21:01,477 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112942619] [2022-03-01 17:21:01,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:01,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:21:01,477 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:01,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:21:01,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:21:01,478 INFO L87 Difference]: Start difference. First operand 31834 states and 143004 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 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) [2022-03-01 17:21:02,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:21:02,647 INFO L93 Difference]: Finished difference Result 53630 states and 225777 transitions. [2022-03-01 17:21:02,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 17:21:02,648 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 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 29 [2022-03-01 17:21:02,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:21:02,866 INFO L225 Difference]: With dead ends: 53630 [2022-03-01 17:21:02,866 INFO L226 Difference]: Without dead ends: 53574 [2022-03-01 17:21:02,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-03-01 17:21:02,867 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 321 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:21:02,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 492 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:21:02,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53574 states. [2022-03-01 17:21:03,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53574 to 31834. [2022-03-01 17:21:04,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31834 states, 31833 states have (on average 4.492005151886407) internal successors, (142994), 31833 states have internal predecessors, (142994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:04,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31834 states to 31834 states and 142994 transitions. [2022-03-01 17:21:04,148 INFO L78 Accepts]: Start accepts. Automaton has 31834 states and 142994 transitions. Word has length 29 [2022-03-01 17:21:04,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:04,149 INFO L470 AbstractCegarLoop]: Abstraction has 31834 states and 142994 transitions. [2022-03-01 17:21:04,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 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) [2022-03-01 17:21:04,149 INFO L276 IsEmpty]: Start isEmpty. Operand 31834 states and 142994 transitions. [2022-03-01 17:21:04,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:04,225 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:04,225 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:04,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-01 17:21:04,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:04,427 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:04,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:04,427 INFO L85 PathProgramCache]: Analyzing trace with hash 172392223, now seen corresponding path program 22 times [2022-03-01 17:21:04,427 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:04,427 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398430340] [2022-03-01 17:21:04,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:04,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:04,454 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:21:04,454 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:04,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398430340] [2022-03-01 17:21:04,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398430340] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:04,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703096220] [2022-03-01 17:21:04,454 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:21:04,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:04,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:04,456 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) [2022-03-01 17:21:04,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-01 17:21:04,478 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:21:04,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:21:04,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:04,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:04,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:21:04,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703096220] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:04,628 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:04,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-03-01 17:21:04,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093175292] [2022-03-01 17:21:04,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:04,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:21:04,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:04,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:21:04,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:21:04,628 INFO L87 Difference]: Start difference. First operand 31834 states and 142994 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 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) [2022-03-01 17:21:05,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:21:05,805 INFO L93 Difference]: Finished difference Result 63201 states and 266555 transitions. [2022-03-01 17:21:05,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 17:21:05,806 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 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 29 [2022-03-01 17:21:05,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:21:06,083 INFO L225 Difference]: With dead ends: 63201 [2022-03-01 17:21:06,083 INFO L226 Difference]: Without dead ends: 63201 [2022-03-01 17:21:06,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2022-03-01 17:21:06,084 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 352 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:21:06,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 476 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:21:06,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63201 states. [2022-03-01 17:21:07,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63201 to 31971. [2022-03-01 17:21:07,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31971 states, 31970 states have (on average 4.490710040663122) internal successors, (143568), 31970 states have internal predecessors, (143568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31971 states to 31971 states and 143568 transitions. [2022-03-01 17:21:07,509 INFO L78 Accepts]: Start accepts. Automaton has 31971 states and 143568 transitions. Word has length 29 [2022-03-01 17:21:07,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:07,509 INFO L470 AbstractCegarLoop]: Abstraction has 31971 states and 143568 transitions. [2022-03-01 17:21:07,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 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) [2022-03-01 17:21:07,509 INFO L276 IsEmpty]: Start isEmpty. Operand 31971 states and 143568 transitions. [2022-03-01 17:21:07,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:07,856 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:07,856 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:07,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-01 17:21:08,057 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,SelfDestructingSolverStorable52 [2022-03-01 17:21:08,057 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:08,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:08,057 INFO L85 PathProgramCache]: Analyzing trace with hash 619003099, now seen corresponding path program 23 times [2022-03-01 17:21:08,057 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:08,057 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987600636] [2022-03-01 17:21:08,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:08,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:21:08,090 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:08,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987600636] [2022-03-01 17:21:08,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987600636] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:08,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991786677] [2022-03-01 17:21:08,090 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:21:08,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:08,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:08,091 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) [2022-03-01 17:21:08,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-01 17:21:08,113 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-01 17:21:08,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:21:08,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:08,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:08,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:21:08,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991786677] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:08,241 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:08,241 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-03-01 17:21:08,241 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276069519] [2022-03-01 17:21:08,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:08,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:21:08,241 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:08,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:21:08,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:21:08,241 INFO L87 Difference]: Start difference. First operand 31971 states and 143568 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 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) [2022-03-01 17:21:09,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:21:09,352 INFO L93 Difference]: Finished difference Result 64043 states and 270031 transitions. [2022-03-01 17:21:09,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 17:21:09,353 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 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 29 [2022-03-01 17:21:09,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:21:09,640 INFO L225 Difference]: With dead ends: 64043 [2022-03-01 17:21:09,640 INFO L226 Difference]: Without dead ends: 64003 [2022-03-01 17:21:09,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2022-03-01 17:21:09,640 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 469 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:21:09,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 339 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:21:09,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64003 states. [2022-03-01 17:21:10,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64003 to 31981. [2022-03-01 17:21:10,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31981 states, 31980 states have (on average 4.49015009380863) internal successors, (143595), 31980 states have internal predecessors, (143595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31981 states to 31981 states and 143595 transitions. [2022-03-01 17:21:11,009 INFO L78 Accepts]: Start accepts. Automaton has 31981 states and 143595 transitions. Word has length 29 [2022-03-01 17:21:11,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:11,010 INFO L470 AbstractCegarLoop]: Abstraction has 31981 states and 143595 transitions. [2022-03-01 17:21:11,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 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) [2022-03-01 17:21:11,010 INFO L276 IsEmpty]: Start isEmpty. Operand 31981 states and 143595 transitions. [2022-03-01 17:21:11,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:11,087 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:11,087 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:11,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-01 17:21:11,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:11,288 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:11,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:11,288 INFO L85 PathProgramCache]: Analyzing trace with hash -96354205, now seen corresponding path program 24 times [2022-03-01 17:21:11,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:11,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982349705] [2022-03-01 17:21:11,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:11,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:11,327 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:11,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982349705] [2022-03-01 17:21:11,327 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982349705] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:11,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777435916] [2022-03-01 17:21:11,328 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:21:11,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:11,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:11,329 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) [2022-03-01 17:21:11,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-01 17:21:11,352 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-01 17:21:11,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:21:11,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:11,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:11,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:11,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777435916] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:11,502 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:11,502 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-03-01 17:21:11,502 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712733923] [2022-03-01 17:21:11,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:11,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 17:21:11,503 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:11,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 17:21:11,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-03-01 17:21:11,503 INFO L87 Difference]: Start difference. First operand 31981 states and 143595 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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) [2022-03-01 17:21:12,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:21:12,646 INFO L93 Difference]: Finished difference Result 53971 states and 230205 transitions. [2022-03-01 17:21:12,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-01 17:21:12,646 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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 29 [2022-03-01 17:21:12,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:21:12,894 INFO L225 Difference]: With dead ends: 53971 [2022-03-01 17:21:12,894 INFO L226 Difference]: Without dead ends: 53971 [2022-03-01 17:21:12,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 17:21:12,894 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 415 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:21:12,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 404 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:21:12,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53971 states. [2022-03-01 17:21:13,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53971 to 30565. [2022-03-01 17:21:14,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30565 states, 30564 states have (on average 4.463290145268944) internal successors, (136416), 30564 states have internal predecessors, (136416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:14,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30565 states to 30565 states and 136416 transitions. [2022-03-01 17:21:14,136 INFO L78 Accepts]: Start accepts. Automaton has 30565 states and 136416 transitions. Word has length 29 [2022-03-01 17:21:14,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:14,136 INFO L470 AbstractCegarLoop]: Abstraction has 30565 states and 136416 transitions. [2022-03-01 17:21:14,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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) [2022-03-01 17:21:14,137 INFO L276 IsEmpty]: Start isEmpty. Operand 30565 states and 136416 transitions. [2022-03-01 17:21:14,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:14,205 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:14,205 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:14,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-01 17:21:14,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:14,406 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:14,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:14,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1931600191, now seen corresponding path program 25 times [2022-03-01 17:21:14,406 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:14,406 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536930121] [2022-03-01 17:21:14,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:14,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:14,441 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:14,441 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:14,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536930121] [2022-03-01 17:21:14,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536930121] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:14,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443829323] [2022-03-01 17:21:14,442 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:21:14,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:14,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:14,443 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) [2022-03-01 17:21:14,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-01 17:21:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:14,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:14,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:14,573 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:14,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:14,629 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:14,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443829323] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:14,629 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:14,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-03-01 17:21:14,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008599198] [2022-03-01 17:21:14,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:14,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 17:21:14,630 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:14,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 17:21:14,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-03-01 17:21:14,630 INFO L87 Difference]: Start difference. First operand 30565 states and 136416 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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) [2022-03-01 17:21:15,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:21:15,642 INFO L93 Difference]: Finished difference Result 54874 states and 230950 transitions. [2022-03-01 17:21:15,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 17:21:15,642 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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 29 [2022-03-01 17:21:15,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:21:15,895 INFO L225 Difference]: With dead ends: 54874 [2022-03-01 17:21:15,895 INFO L226 Difference]: Without dead ends: 54814 [2022-03-01 17:21:15,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-03-01 17:21:15,895 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 443 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:21:15,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 390 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:21:15,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54814 states. [2022-03-01 17:21:17,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54814 to 30989. [2022-03-01 17:21:17,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30989 states, 30988 states have (on average 4.461081709048664) internal successors, (138240), 30988 states have internal predecessors, (138240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:17,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30989 states to 30989 states and 138240 transitions. [2022-03-01 17:21:17,180 INFO L78 Accepts]: Start accepts. Automaton has 30989 states and 138240 transitions. Word has length 29 [2022-03-01 17:21:17,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:17,180 INFO L470 AbstractCegarLoop]: Abstraction has 30989 states and 138240 transitions. [2022-03-01 17:21:17,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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) [2022-03-01 17:21:17,180 INFO L276 IsEmpty]: Start isEmpty. Operand 30989 states and 138240 transitions. [2022-03-01 17:21:17,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:17,251 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:17,251 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:17,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-03-01 17:21:17,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-03-01 17:21:17,452 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:17,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:17,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1226629401, now seen corresponding path program 26 times [2022-03-01 17:21:17,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:17,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600227140] [2022-03-01 17:21:17,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:17,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:17,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:17,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600227140] [2022-03-01 17:21:17,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600227140] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:17,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543776315] [2022-03-01 17:21:17,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:21:17,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:17,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:17,493 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) [2022-03-01 17:21:17,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-01 17:21:17,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:21:17,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:21:17,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:17,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:17,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:21:17,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543776315] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:17,685 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:17,685 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-03-01 17:21:17,685 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593006639] [2022-03-01 17:21:17,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:17,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 17:21:17,685 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:17,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 17:21:17,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-03-01 17:21:17,686 INFO L87 Difference]: Start difference. First operand 30989 states and 138240 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 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) [2022-03-01 17:21:19,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:21:19,027 INFO L93 Difference]: Finished difference Result 67378 states and 285832 transitions. [2022-03-01 17:21:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-01 17:21:19,028 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 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 29 [2022-03-01 17:21:19,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:21:19,326 INFO L225 Difference]: With dead ends: 67378 [2022-03-01 17:21:19,326 INFO L226 Difference]: Without dead ends: 67378 [2022-03-01 17:21:19,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 17:21:19,327 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 535 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 17:21:19,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 346 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 17:21:19,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67378 states. [2022-03-01 17:21:20,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67378 to 29898. [2022-03-01 17:21:20,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29898 states, 29897 states have (on average 4.434090376960899) internal successors, (132566), 29897 states have internal predecessors, (132566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:20,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29898 states to 29898 states and 132566 transitions. [2022-03-01 17:21:20,803 INFO L78 Accepts]: Start accepts. Automaton has 29898 states and 132566 transitions. Word has length 29 [2022-03-01 17:21:20,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:20,803 INFO L470 AbstractCegarLoop]: Abstraction has 29898 states and 132566 transitions. [2022-03-01 17:21:20,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 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) [2022-03-01 17:21:20,803 INFO L276 IsEmpty]: Start isEmpty. Operand 29898 states and 132566 transitions. [2022-03-01 17:21:20,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:20,881 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:20,881 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:20,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-01 17:21:21,081 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,SelfDestructingSolverStorable56 [2022-03-01 17:21:21,082 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:21,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:21,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1668470631, now seen corresponding path program 27 times [2022-03-01 17:21:21,082 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:21,082 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194667229] [2022-03-01 17:21:21,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:21,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:21,348 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:21,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194667229] [2022-03-01 17:21:21,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194667229] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:21,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092962382] [2022-03-01 17:21:21,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:21:21,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:21,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:21,360 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) [2022-03-01 17:21:21,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-01 17:21:21,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:21:21,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:21:21,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:21,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:21,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:21,590 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:21:21,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092962382] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:21,590 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:21,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-03-01 17:21:21,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602571283] [2022-03-01 17:21:21,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:21,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 17:21:21,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:21,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 17:21:21,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-03-01 17:21:21,591 INFO L87 Difference]: Start difference. First operand 29898 states and 132566 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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) [2022-03-01 17:21:22,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:21:22,365 INFO L93 Difference]: Finished difference Result 44092 states and 184185 transitions. [2022-03-01 17:21:22,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 17:21:22,365 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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 29 [2022-03-01 17:21:22,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:21:22,522 INFO L225 Difference]: With dead ends: 44092 [2022-03-01 17:21:22,522 INFO L226 Difference]: Without dead ends: 44008 [2022-03-01 17:21:22,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-03-01 17:21:22,522 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 350 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:21:22,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 469 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:21:22,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44008 states. [2022-03-01 17:21:23,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44008 to 28760. [2022-03-01 17:21:23,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28760 states, 28759 states have (on average 4.440905455683438) internal successors, (127716), 28759 states have internal predecessors, (127716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:23,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28760 states to 28760 states and 127716 transitions. [2022-03-01 17:21:23,710 INFO L78 Accepts]: Start accepts. Automaton has 28760 states and 127716 transitions. Word has length 29 [2022-03-01 17:21:23,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:23,710 INFO L470 AbstractCegarLoop]: Abstraction has 28760 states and 127716 transitions. [2022-03-01 17:21:23,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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) [2022-03-01 17:21:23,710 INFO L276 IsEmpty]: Start isEmpty. Operand 28760 states and 127716 transitions. [2022-03-01 17:21:23,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:23,784 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:23,784 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:23,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-01 17:21:23,985 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,SelfDestructingSolverStorable57 [2022-03-01 17:21:23,985 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:23,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:23,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1199527587, now seen corresponding path program 28 times [2022-03-01 17:21:23,986 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:23,986 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060718911] [2022-03-01 17:21:23,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:23,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:24,013 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:24,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060718911] [2022-03-01 17:21:24,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060718911] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:24,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554611792] [2022-03-01 17:21:24,014 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:21:24,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:24,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:24,015 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) [2022-03-01 17:21:24,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-01 17:21:24,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:21:24,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:21:24,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:24,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:24,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:21:24,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554611792] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:24,161 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:24,161 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-01 17:21:24,161 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396930345] [2022-03-01 17:21:24,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:24,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:21:24,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:24,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:21:24,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:21:24,161 INFO L87 Difference]: Start difference. First operand 28760 states and 127716 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 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) [2022-03-01 17:21:25,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:21:25,129 INFO L93 Difference]: Finished difference Result 60388 states and 252684 transitions. [2022-03-01 17:21:25,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 17:21:25,129 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 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 29 [2022-03-01 17:21:25,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:21:25,418 INFO L225 Difference]: With dead ends: 60388 [2022-03-01 17:21:25,418 INFO L226 Difference]: Without dead ends: 60388 [2022-03-01 17:21:25,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2022-03-01 17:21:25,419 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 535 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:21:25,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 232 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:21:25,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60388 states. [2022-03-01 17:21:26,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60388 to 30620. [2022-03-01 17:21:26,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30620 states, 30619 states have (on average 4.473431529442503) internal successors, (136972), 30619 states have internal predecessors, (136972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:26,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30620 states to 30620 states and 136972 transitions. [2022-03-01 17:21:26,723 INFO L78 Accepts]: Start accepts. Automaton has 30620 states and 136972 transitions. Word has length 29 [2022-03-01 17:21:26,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:26,723 INFO L470 AbstractCegarLoop]: Abstraction has 30620 states and 136972 transitions. [2022-03-01 17:21:26,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 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) [2022-03-01 17:21:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 30620 states and 136972 transitions. [2022-03-01 17:21:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:26,806 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:26,807 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:26,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-01 17:21:27,007 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,SelfDestructingSolverStorable58 [2022-03-01 17:21:27,007 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:27,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:27,008 INFO L85 PathProgramCache]: Analyzing trace with hash -308072669, now seen corresponding path program 29 times [2022-03-01 17:21:27,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:27,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274515539] [2022-03-01 17:21:27,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:27,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:27,039 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:27,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274515539] [2022-03-01 17:21:27,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274515539] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:27,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347202042] [2022-03-01 17:21:27,040 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:21:27,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:27,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:27,041 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) [2022-03-01 17:21:27,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-01 17:21:27,068 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 17:21:27,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:21:27,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:27,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:27,159 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:27,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:21:27,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347202042] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:27,216 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:27,216 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-01 17:21:27,216 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518106825] [2022-03-01 17:21:27,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:27,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:21:27,216 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:27,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:21:27,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:21:27,217 INFO L87 Difference]: Start difference. First operand 30620 states and 136972 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 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) [2022-03-01 17:21:28,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:21:28,116 INFO L93 Difference]: Finished difference Result 41767 states and 177773 transitions. [2022-03-01 17:21:28,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 17:21:28,117 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 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 29 [2022-03-01 17:21:28,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:21:28,290 INFO L225 Difference]: With dead ends: 41767 [2022-03-01 17:21:28,291 INFO L226 Difference]: Without dead ends: 41739 [2022-03-01 17:21:28,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-03-01 17:21:28,291 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 224 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:21:28,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 380 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:21:28,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41739 states. [2022-03-01 17:21:29,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41739 to 30609. [2022-03-01 17:21:29,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30609 states, 30608 states have (on average 4.473078933612127) internal successors, (136912), 30608 states have internal predecessors, (136912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30609 states to 30609 states and 136912 transitions. [2022-03-01 17:21:29,620 INFO L78 Accepts]: Start accepts. Automaton has 30609 states and 136912 transitions. Word has length 29 [2022-03-01 17:21:29,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:29,620 INFO L470 AbstractCegarLoop]: Abstraction has 30609 states and 136912 transitions. [2022-03-01 17:21:29,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 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) [2022-03-01 17:21:29,620 INFO L276 IsEmpty]: Start isEmpty. Operand 30609 states and 136912 transitions. [2022-03-01 17:21:29,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:29,703 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:29,703 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:29,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-03-01 17:21:29,903 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,SelfDestructingSolverStorable59 [2022-03-01 17:21:29,904 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:29,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:29,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1367025249, now seen corresponding path program 30 times [2022-03-01 17:21:29,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:29,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710786713] [2022-03-01 17:21:29,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:29,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:29,931 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:29,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710786713] [2022-03-01 17:21:29,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710786713] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:29,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536679171] [2022-03-01 17:21:29,932 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:21:29,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:29,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:29,933 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) [2022-03-01 17:21:29,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-01 17:21:29,956 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 17:21:29,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:21:29,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:29,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:30,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:30,081 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:21:30,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536679171] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:30,081 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:30,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-01 17:21:30,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776072344] [2022-03-01 17:21:30,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:30,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:21:30,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:30,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:21:30,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:21:30,082 INFO L87 Difference]: Start difference. First operand 30609 states and 136912 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 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) [2022-03-01 17:21:31,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:21:31,105 INFO L93 Difference]: Finished difference Result 47385 states and 201554 transitions. [2022-03-01 17:21:31,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 17:21:31,105 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 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 29 [2022-03-01 17:21:31,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:21:31,314 INFO L225 Difference]: With dead ends: 47385 [2022-03-01 17:21:31,314 INFO L226 Difference]: Without dead ends: 47385 [2022-03-01 17:21:31,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2022-03-01 17:21:31,314 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 279 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:21:31,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 383 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:21:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47385 states. [2022-03-01 17:21:32,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47385 to 30746. [2022-03-01 17:21:32,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30746 states, 30745 states have (on average 4.471816555537486) internal successors, (137486), 30745 states have internal predecessors, (137486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:32,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30746 states to 30746 states and 137486 transitions. [2022-03-01 17:21:32,346 INFO L78 Accepts]: Start accepts. Automaton has 30746 states and 137486 transitions. Word has length 29 [2022-03-01 17:21:32,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:32,347 INFO L470 AbstractCegarLoop]: Abstraction has 30746 states and 137486 transitions. [2022-03-01 17:21:32,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 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) [2022-03-01 17:21:32,347 INFO L276 IsEmpty]: Start isEmpty. Operand 30746 states and 137486 transitions. [2022-03-01 17:21:32,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:32,708 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:32,709 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:32,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-01 17:21:32,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:32,928 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:32,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:32,928 INFO L85 PathProgramCache]: Analyzing trace with hash -920414373, now seen corresponding path program 31 times [2022-03-01 17:21:32,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:32,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210040532] [2022-03-01 17:21:32,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:32,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:32,958 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:32,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210040532] [2022-03-01 17:21:32,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210040532] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:32,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667801148] [2022-03-01 17:21:32,958 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:21:32,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:32,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:32,960 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) [2022-03-01 17:21:32,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-01 17:21:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:32,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:32,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:33,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:21:33,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667801148] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:33,141 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:33,141 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-01 17:21:33,141 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687276066] [2022-03-01 17:21:33,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:33,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:21:33,141 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:33,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:21:33,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:21:33,142 INFO L87 Difference]: Start difference. First operand 30746 states and 137486 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 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) [2022-03-01 17:21:33,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:21:33,940 INFO L93 Difference]: Finished difference Result 57968 states and 241203 transitions. [2022-03-01 17:21:33,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-01 17:21:33,941 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 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 29 [2022-03-01 17:21:33,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:21:34,442 INFO L225 Difference]: With dead ends: 57968 [2022-03-01 17:21:34,442 INFO L226 Difference]: Without dead ends: 57948 [2022-03-01 17:21:34,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2022-03-01 17:21:34,443 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 523 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:21:34,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 289 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:21:34,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57948 states. [2022-03-01 17:21:35,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57948 to 30746. [2022-03-01 17:21:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30746 states, 30745 states have (on average 4.471491299398276) internal successors, (137476), 30745 states have internal predecessors, (137476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:35,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30746 states to 30746 states and 137476 transitions. [2022-03-01 17:21:35,522 INFO L78 Accepts]: Start accepts. Automaton has 30746 states and 137476 transitions. Word has length 29 [2022-03-01 17:21:35,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:35,522 INFO L470 AbstractCegarLoop]: Abstraction has 30746 states and 137476 transitions. [2022-03-01 17:21:35,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 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) [2022-03-01 17:21:35,522 INFO L276 IsEmpty]: Start isEmpty. Operand 30746 states and 137476 transitions. [2022-03-01 17:21:35,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:35,595 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:35,595 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:35,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-03-01 17:21:35,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:35,795 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:35,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:35,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1635771677, now seen corresponding path program 32 times [2022-03-01 17:21:35,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:35,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765874126] [2022-03-01 17:21:35,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:35,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:36,085 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:21:36,085 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:36,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765874126] [2022-03-01 17:21:36,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765874126] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:36,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619097100] [2022-03-01 17:21:36,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:21:36,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:36,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:36,107 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) [2022-03-01 17:21:36,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-01 17:21:36,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:21:36,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:21:36,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:36,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:36,264 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:36,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:21:36,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619097100] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:36,317 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:36,317 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-03-01 17:21:36,317 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174010165] [2022-03-01 17:21:36,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:36,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:21:36,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:36,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:21:36,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:21:36,318 INFO L87 Difference]: Start difference. First operand 30746 states and 137476 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 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) [2022-03-01 17:21:38,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:21:38,108 INFO L93 Difference]: Finished difference Result 66647 states and 285464 transitions. [2022-03-01 17:21:38,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 17:21:38,108 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 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 29 [2022-03-01 17:21:38,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:21:38,412 INFO L225 Difference]: With dead ends: 66647 [2022-03-01 17:21:38,412 INFO L226 Difference]: Without dead ends: 66647 [2022-03-01 17:21:38,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=565, Invalid=2191, Unknown=0, NotChecked=0, Total=2756 [2022-03-01 17:21:38,413 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 427 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:21:38,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 758 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:21:38,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66647 states. [2022-03-01 17:21:39,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66647 to 31294. [2022-03-01 17:21:39,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31294 states, 31293 states have (on average 4.46655801616975) internal successors, (139772), 31293 states have internal predecessors, (139772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:39,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31294 states to 31294 states and 139772 transitions. [2022-03-01 17:21:39,836 INFO L78 Accepts]: Start accepts. Automaton has 31294 states and 139772 transitions. Word has length 29 [2022-03-01 17:21:39,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:39,836 INFO L470 AbstractCegarLoop]: Abstraction has 31294 states and 139772 transitions. [2022-03-01 17:21:39,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 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) [2022-03-01 17:21:39,836 INFO L276 IsEmpty]: Start isEmpty. Operand 31294 states and 139772 transitions. [2022-03-01 17:21:39,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:39,920 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:39,920 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:39,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-01 17:21:40,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:40,124 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:40,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash 823949633, now seen corresponding path program 33 times [2022-03-01 17:21:40,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:40,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517592434] [2022-03-01 17:21:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:40,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:21:40,157 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:40,157 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517592434] [2022-03-01 17:21:40,157 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517592434] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:40,157 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374715669] [2022-03-01 17:21:40,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:21:40,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:40,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:40,158 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) [2022-03-01 17:21:40,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-01 17:21:40,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 17:21:40,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:21:40,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:40,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:40,270 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:40,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:40,322 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:21:40,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374715669] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:40,322 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:40,322 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-03-01 17:21:40,323 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999870734] [2022-03-01 17:21:40,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:40,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:21:40,323 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:40,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:21:40,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:21:40,323 INFO L87 Difference]: Start difference. First operand 31294 states and 139772 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 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) [2022-03-01 17:21:41,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:21:41,630 INFO L93 Difference]: Finished difference Result 67722 states and 279320 transitions. [2022-03-01 17:21:41,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 17:21:41,631 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 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 29 [2022-03-01 17:21:41,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:21:41,962 INFO L225 Difference]: With dead ends: 67722 [2022-03-01 17:21:41,962 INFO L226 Difference]: Without dead ends: 67522 [2022-03-01 17:21:41,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 17:21:41,963 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 584 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:21:41,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 383 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:21:42,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67522 states. [2022-03-01 17:21:43,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67522 to 31300. [2022-03-01 17:21:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31300 states, 31299 states have (on average 4.465414230486597) internal successors, (139763), 31299 states have internal predecessors, (139763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:43,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31300 states to 31300 states and 139763 transitions. [2022-03-01 17:21:43,424 INFO L78 Accepts]: Start accepts. Automaton has 31300 states and 139763 transitions. Word has length 29 [2022-03-01 17:21:43,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:43,424 INFO L470 AbstractCegarLoop]: Abstraction has 31300 states and 139763 transitions. [2022-03-01 17:21:43,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 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) [2022-03-01 17:21:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand 31300 states and 139763 transitions. [2022-03-01 17:21:43,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:43,504 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:43,504 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:43,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-01 17:21:43,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:43,705 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:43,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:43,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1685460577, now seen corresponding path program 34 times [2022-03-01 17:21:43,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:43,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844547501] [2022-03-01 17:21:43,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:43,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:43,745 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:43,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844547501] [2022-03-01 17:21:43,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844547501] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:43,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924299018] [2022-03-01 17:21:43,745 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:21:43,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:43,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:43,746 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) [2022-03-01 17:21:43,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-01 17:21:43,771 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:21:43,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:21:43,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:43,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:43,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:43,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924299018] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:43,930 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:43,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-01 17:21:43,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594787212] [2022-03-01 17:21:43,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:43,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:21:43,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:43,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:21:43,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:21:43,931 INFO L87 Difference]: Start difference. First operand 31300 states and 139763 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 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) [2022-03-01 17:21:45,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:21:45,512 INFO L93 Difference]: Finished difference Result 57331 states and 248639 transitions. [2022-03-01 17:21:45,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 17:21:45,513 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 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 29 [2022-03-01 17:21:45,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:21:46,086 INFO L225 Difference]: With dead ends: 57331 [2022-03-01 17:21:46,086 INFO L226 Difference]: Without dead ends: 57311 [2022-03-01 17:21:46,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=1400, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 17:21:46,087 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 261 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:21:46,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 611 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:21:46,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57311 states. [2022-03-01 17:21:46,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57311 to 31991. [2022-03-01 17:21:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31991 states, 31990 states have (on average 4.448671459831197) internal successors, (142313), 31990 states have internal predecessors, (142313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31991 states to 31991 states and 142313 transitions. [2022-03-01 17:21:47,163 INFO L78 Accepts]: Start accepts. Automaton has 31991 states and 142313 transitions. Word has length 29 [2022-03-01 17:21:47,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:47,163 INFO L470 AbstractCegarLoop]: Abstraction has 31991 states and 142313 transitions. [2022-03-01 17:21:47,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 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) [2022-03-01 17:21:47,163 INFO L276 IsEmpty]: Start isEmpty. Operand 31991 states and 142313 transitions. [2022-03-01 17:21:47,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:47,241 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:47,241 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:47,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-03-01 17:21:47,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-03-01 17:21:47,442 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:47,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:47,442 INFO L85 PathProgramCache]: Analyzing trace with hash 620018621, now seen corresponding path program 35 times [2022-03-01 17:21:47,442 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:47,442 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271628278] [2022-03-01 17:21:47,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:47,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:47,476 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:47,477 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:47,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271628278] [2022-03-01 17:21:47,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271628278] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:47,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522831679] [2022-03-01 17:21:47,477 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:21:47,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:47,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:47,478 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) [2022-03-01 17:21:47,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-01 17:21:47,500 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 17:21:47,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:21:47,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:47,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:47,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:47,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522831679] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:47,920 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:47,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-01 17:21:47,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161882406] [2022-03-01 17:21:47,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:47,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:21:47,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:47,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:21:47,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:21:47,921 INFO L87 Difference]: Start difference. First operand 31991 states and 142313 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 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) [2022-03-01 17:21:48,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:21:48,750 INFO L93 Difference]: Finished difference Result 56534 states and 233979 transitions. [2022-03-01 17:21:48,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 17:21:48,750 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 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 29 [2022-03-01 17:21:48,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:21:49,285 INFO L225 Difference]: With dead ends: 56534 [2022-03-01 17:21:49,285 INFO L226 Difference]: Without dead ends: 56434 [2022-03-01 17:21:49,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 17:21:49,285 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 545 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:21:49,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 338 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:21:49,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56434 states. [2022-03-01 17:21:50,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56434 to 32469. [2022-03-01 17:21:50,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32469 states, 32468 states have (on average 4.436368116299125) internal successors, (144040), 32468 states have internal predecessors, (144040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:50,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32469 states to 32469 states and 144040 transitions. [2022-03-01 17:21:50,341 INFO L78 Accepts]: Start accepts. Automaton has 32469 states and 144040 transitions. Word has length 29 [2022-03-01 17:21:50,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:50,341 INFO L470 AbstractCegarLoop]: Abstraction has 32469 states and 144040 transitions. [2022-03-01 17:21:50,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 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) [2022-03-01 17:21:50,341 INFO L276 IsEmpty]: Start isEmpty. Operand 32469 states and 144040 transitions. [2022-03-01 17:21:50,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:50,422 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:50,422 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:50,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-01 17:21:50,622 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,SelfDestructingSolverStorable65 [2022-03-01 17:21:50,623 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:50,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:50,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1534820831, now seen corresponding path program 16 times [2022-03-01 17:21:50,623 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:50,623 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472766469] [2022-03-01 17:21:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:50,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:50,660 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:50,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472766469] [2022-03-01 17:21:50,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472766469] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:50,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257824707] [2022-03-01 17:21:50,661 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:21:50,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:50,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:50,662 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) [2022-03-01 17:21:50,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-01 17:21:50,688 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:21:50,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:21:50,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:50,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:50,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:50,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257824707] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:50,854 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:50,854 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-01 17:21:50,854 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866790963] [2022-03-01 17:21:50,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:50,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:21:50,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:50,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:21:50,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:21:50,855 INFO L87 Difference]: Start difference. First operand 32469 states and 144040 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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) [2022-03-01 17:21:52,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:21:52,898 INFO L93 Difference]: Finished difference Result 80270 states and 344343 transitions. [2022-03-01 17:21:52,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 17:21:52,899 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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 29 [2022-03-01 17:21:52,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:21:53,309 INFO L225 Difference]: With dead ends: 80270 [2022-03-01 17:21:53,309 INFO L226 Difference]: Without dead ends: 80270 [2022-03-01 17:21:53,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=1400, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 17:21:53,309 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 255 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:21:53,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 701 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:21:53,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80270 states. [2022-03-01 17:21:54,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80270 to 31572. [2022-03-01 17:21:54,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31572 states, 31571 states have (on average 4.398910392448767) internal successors, (138878), 31571 states have internal predecessors, (138878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:54,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31572 states to 31572 states and 138878 transitions. [2022-03-01 17:21:54,915 INFO L78 Accepts]: Start accepts. Automaton has 31572 states and 138878 transitions. Word has length 29 [2022-03-01 17:21:54,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:54,916 INFO L470 AbstractCegarLoop]: Abstraction has 31572 states and 138878 transitions. [2022-03-01 17:21:54,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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) [2022-03-01 17:21:54,916 INFO L276 IsEmpty]: Start isEmpty. Operand 31572 states and 138878 transitions. [2022-03-01 17:21:54,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:54,991 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:54,991 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:55,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-01 17:21:55,191 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,SelfDestructingSolverStorable66 [2022-03-01 17:21:55,192 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:55,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:55,192 INFO L85 PathProgramCache]: Analyzing trace with hash 285954147, now seen corresponding path program 17 times [2022-03-01 17:21:55,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:55,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576342236] [2022-03-01 17:21:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:55,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:55,238 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:55,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576342236] [2022-03-01 17:21:55,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576342236] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:55,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819802168] [2022-03-01 17:21:55,240 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:21:55,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:55,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:55,244 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) [2022-03-01 17:21:55,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-01 17:21:55,268 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 17:21:55,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:21:55,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:55,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:55,339 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:55,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:55,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819802168] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:55,392 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:55,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-01 17:21:55,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590287380] [2022-03-01 17:21:55,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:55,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:21:55,393 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:55,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:21:55,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:21:55,393 INFO L87 Difference]: Start difference. First operand 31572 states and 138878 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 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) [2022-03-01 17:21:56,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:21:56,544 INFO L93 Difference]: Finished difference Result 65127 states and 271613 transitions. [2022-03-01 17:21:56,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 17:21:56,544 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 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 29 [2022-03-01 17:21:56,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:21:56,803 INFO L225 Difference]: With dead ends: 65127 [2022-03-01 17:21:56,803 INFO L226 Difference]: Without dead ends: 64887 [2022-03-01 17:21:56,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 17:21:56,804 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 455 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:21:56,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 316 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:21:57,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64887 states. [2022-03-01 17:21:58,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64887 to 39278. [2022-03-01 17:21:58,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39278 states, 39277 states have (on average 4.461567838684217) internal successors, (175237), 39277 states have internal predecessors, (175237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:21:58,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39278 states to 39278 states and 175237 transitions. [2022-03-01 17:21:58,637 INFO L78 Accepts]: Start accepts. Automaton has 39278 states and 175237 transitions. Word has length 29 [2022-03-01 17:21:58,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:21:58,637 INFO L470 AbstractCegarLoop]: Abstraction has 39278 states and 175237 transitions. [2022-03-01 17:21:58,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 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) [2022-03-01 17:21:58,637 INFO L276 IsEmpty]: Start isEmpty. Operand 39278 states and 175237 transitions. [2022-03-01 17:21:58,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:21:58,819 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:21:58,819 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:21:58,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-03-01 17:21:59,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:59,019 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:21:59,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:21:59,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1167414617, now seen corresponding path program 18 times [2022-03-01 17:21:59,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:21:59,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104704607] [2022-03-01 17:21:59,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:21:59,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:21:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:21:59,050 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:59,050 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:21:59,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104704607] [2022-03-01 17:21:59,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104704607] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:21:59,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105362379] [2022-03-01 17:21:59,051 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:21:59,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:21:59,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:21:59,052 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) [2022-03-01 17:21:59,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-01 17:21:59,074 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 17:21:59,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:21:59,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:21:59,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:21:59,146 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:59,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:21:59,196 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:21:59,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105362379] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:21:59,197 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:21:59,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-01 17:21:59,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432122138] [2022-03-01 17:21:59,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:21:59,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:21:59,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:21:59,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:21:59,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:21:59,197 INFO L87 Difference]: Start difference. First operand 39278 states and 175237 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 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) [2022-03-01 17:22:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:22:00,363 INFO L93 Difference]: Finished difference Result 68394 states and 287238 transitions. [2022-03-01 17:22:00,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 17:22:00,364 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 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 29 [2022-03-01 17:22:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:22:00,678 INFO L225 Difference]: With dead ends: 68394 [2022-03-01 17:22:00,678 INFO L226 Difference]: Without dead ends: 68394 [2022-03-01 17:22:00,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2022-03-01 17:22:00,679 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 519 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:22:00,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [519 Valid, 253 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:22:00,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68394 states. [2022-03-01 17:22:02,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68394 to 39026. [2022-03-01 17:22:02,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39026 states, 39025 states have (on average 4.450608584240872) internal successors, (173685), 39025 states have internal predecessors, (173685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:22:02,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39026 states to 39026 states and 173685 transitions. [2022-03-01 17:22:02,250 INFO L78 Accepts]: Start accepts. Automaton has 39026 states and 173685 transitions. Word has length 29 [2022-03-01 17:22:02,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:22:02,250 INFO L470 AbstractCegarLoop]: Abstraction has 39026 states and 173685 transitions. [2022-03-01 17:22:02,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 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) [2022-03-01 17:22:02,250 INFO L276 IsEmpty]: Start isEmpty. Operand 39026 states and 173685 transitions. [2022-03-01 17:22:02,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:22:02,343 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:22:02,343 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:22:02,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-03-01 17:22:02,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:02,544 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:22:02,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:22:02,544 INFO L85 PathProgramCache]: Analyzing trace with hash -177947937, now seen corresponding path program 19 times [2022-03-01 17:22:02,545 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:22:02,545 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424408901] [2022-03-01 17:22:02,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:22:02,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:22:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:22:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:02,578 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:22:02,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424408901] [2022-03-01 17:22:02,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424408901] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:22:02,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371505291] [2022-03-01 17:22:02,578 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:22:02,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:02,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:22:02,579 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) [2022-03-01 17:22:02,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-01 17:22:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:22:02,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:22:02,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:22:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:02,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:22:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:02,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371505291] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:22:02,738 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:22:02,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-01 17:22:02,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046138454] [2022-03-01 17:22:02,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:22:02,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:22:02,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:22:02,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:22:02,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:22:02,739 INFO L87 Difference]: Start difference. First operand 39026 states and 173685 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 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) [2022-03-01 17:22:03,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:22:03,673 INFO L93 Difference]: Finished difference Result 49591 states and 212155 transitions. [2022-03-01 17:22:03,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 17:22:03,673 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 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 29 [2022-03-01 17:22:03,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:22:03,863 INFO L225 Difference]: With dead ends: 49591 [2022-03-01 17:22:03,863 INFO L226 Difference]: Without dead ends: 49566 [2022-03-01 17:22:03,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-03-01 17:22:03,864 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 173 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:22:03,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 409 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:22:03,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49566 states. [2022-03-01 17:22:04,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49566 to 39082. [2022-03-01 17:22:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39082 states, 39081 states have (on average 4.449553491466442) internal successors, (173893), 39081 states have internal predecessors, (173893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:22:05,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39082 states to 39082 states and 173893 transitions. [2022-03-01 17:22:05,236 INFO L78 Accepts]: Start accepts. Automaton has 39082 states and 173893 transitions. Word has length 29 [2022-03-01 17:22:05,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:22:05,236 INFO L470 AbstractCegarLoop]: Abstraction has 39082 states and 173893 transitions. [2022-03-01 17:22:05,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 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) [2022-03-01 17:22:05,236 INFO L276 IsEmpty]: Start isEmpty. Operand 39082 states and 173893 transitions. [2022-03-01 17:22:05,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:22:05,326 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:22:05,326 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:22:05,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-01 17:22:05,527 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,SelfDestructingSolverStorable69 [2022-03-01 17:22:05,527 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:22:05,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:22:05,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1432006963, now seen corresponding path program 20 times [2022-03-01 17:22:05,527 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:22:05,528 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554280877] [2022-03-01 17:22:05,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:22:05,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:22:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:22:05,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:05,560 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:22:05,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554280877] [2022-03-01 17:22:05,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554280877] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:22:05,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792239999] [2022-03-01 17:22:05,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:22:05,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:05,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:22:05,563 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) [2022-03-01 17:22:05,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-01 17:22:05,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:22:05,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:22:05,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:22:05,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:22:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:05,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:22:05,720 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:22:05,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792239999] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:22:05,720 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:22:05,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-03-01 17:22:05,720 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778617187] [2022-03-01 17:22:05,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:22:05,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:22:05,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:22:05,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:22:05,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:22:05,721 INFO L87 Difference]: Start difference. First operand 39082 states and 173893 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 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) [2022-03-01 17:22:07,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:22:07,523 INFO L93 Difference]: Finished difference Result 122970 states and 525591 transitions. [2022-03-01 17:22:07,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-01 17:22:07,523 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 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 29 [2022-03-01 17:22:07,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:22:08,560 INFO L225 Difference]: With dead ends: 122970 [2022-03-01 17:22:08,561 INFO L226 Difference]: Without dead ends: 122970 [2022-03-01 17:22:08,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-03-01 17:22:08,561 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 495 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 17:22:08,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 258 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 17:22:08,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122970 states. [2022-03-01 17:22:10,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122970 to 51969. [2022-03-01 17:22:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51969 states, 51968 states have (on average 4.575142395320197) internal successors, (237761), 51968 states have internal predecessors, (237761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:22:11,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51969 states to 51969 states and 237761 transitions. [2022-03-01 17:22:11,209 INFO L78 Accepts]: Start accepts. Automaton has 51969 states and 237761 transitions. Word has length 29 [2022-03-01 17:22:11,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:22:11,209 INFO L470 AbstractCegarLoop]: Abstraction has 51969 states and 237761 transitions. [2022-03-01 17:22:11,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 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) [2022-03-01 17:22:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand 51969 states and 237761 transitions. [2022-03-01 17:22:11,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:22:11,341 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:22:11,341 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:22:11,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-03-01 17:22:11,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:11,541 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:22:11,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:22:11,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1669970355, now seen corresponding path program 21 times [2022-03-01 17:22:11,542 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:22:11,542 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312388251] [2022-03-01 17:22:11,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:22:11,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:22:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:22:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:11,568 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:22:11,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312388251] [2022-03-01 17:22:11,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312388251] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:22:11,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011381009] [2022-03-01 17:22:11,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:22:11,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:11,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:22:11,570 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) [2022-03-01 17:22:11,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-01 17:22:11,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 17:22:11,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:22:11,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:22:11,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:22:11,685 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:11,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:22:11,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:22:11,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011381009] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:22:11,734 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:22:11,734 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-03-01 17:22:11,734 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551951052] [2022-03-01 17:22:11,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:22:11,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:22:11,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:22:11,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:22:11,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:22:11,735 INFO L87 Difference]: Start difference. First operand 51969 states and 237761 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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) [2022-03-01 17:22:13,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:22:13,119 INFO L93 Difference]: Finished difference Result 83465 states and 358962 transitions. [2022-03-01 17:22:13,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 17:22:13,120 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 29 [2022-03-01 17:22:13,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:22:13,822 INFO L225 Difference]: With dead ends: 83465 [2022-03-01 17:22:13,822 INFO L226 Difference]: Without dead ends: 83417 [2022-03-01 17:22:13,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-03-01 17:22:13,823 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 312 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:22:13,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 492 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:22:13,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83417 states. [2022-03-01 17:22:15,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83417 to 51969. [2022-03-01 17:22:15,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51969 states, 51968 states have (on average 4.574911483990148) internal successors, (237749), 51968 states have internal predecessors, (237749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:22:16,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51969 states to 51969 states and 237749 transitions. [2022-03-01 17:22:16,317 INFO L78 Accepts]: Start accepts. Automaton has 51969 states and 237749 transitions. Word has length 29 [2022-03-01 17:22:16,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:22:16,317 INFO L470 AbstractCegarLoop]: Abstraction has 51969 states and 237749 transitions. [2022-03-01 17:22:16,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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) [2022-03-01 17:22:16,317 INFO L276 IsEmpty]: Start isEmpty. Operand 51969 states and 237749 transitions. [2022-03-01 17:22:16,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:22:16,469 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:22:16,469 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:22:16,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-01 17:22:16,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:16,670 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:22:16,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:22:16,670 INFO L85 PathProgramCache]: Analyzing trace with hash 944500301, now seen corresponding path program 22 times [2022-03-01 17:22:16,670 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:22:16,670 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919234467] [2022-03-01 17:22:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:22:16,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:22:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:22:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:22:16,700 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:22:16,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919234467] [2022-03-01 17:22:16,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919234467] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:22:16,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309801748] [2022-03-01 17:22:16,701 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:22:16,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:16,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:22:16,702 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) [2022-03-01 17:22:16,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-01 17:22:16,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:22:16,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:22:16,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:22:16,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:22:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:16,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:22:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:22:16,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309801748] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:22:16,873 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:22:16,873 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-03-01 17:22:16,873 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736326598] [2022-03-01 17:22:16,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:22:16,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:22:16,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:22:16,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:22:16,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:22:16,874 INFO L87 Difference]: Start difference. First operand 51969 states and 237749 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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) [2022-03-01 17:22:18,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:22:18,375 INFO L93 Difference]: Finished difference Result 99551 states and 429052 transitions. [2022-03-01 17:22:18,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 17:22:18,376 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 29 [2022-03-01 17:22:18,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:22:19,613 INFO L225 Difference]: With dead ends: 99551 [2022-03-01 17:22:19,614 INFO L226 Difference]: Without dead ends: 99551 [2022-03-01 17:22:19,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2022-03-01 17:22:19,614 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 440 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:22:19,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 390 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:22:19,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99551 states. [2022-03-01 17:22:21,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99551 to 52207. [2022-03-01 17:22:21,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52207 states, 52206 states have (on average 4.573401524728959) internal successors, (238759), 52206 states have internal predecessors, (238759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:22:22,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52207 states to 52207 states and 238759 transitions. [2022-03-01 17:22:22,423 INFO L78 Accepts]: Start accepts. Automaton has 52207 states and 238759 transitions. Word has length 29 [2022-03-01 17:22:22,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:22:22,423 INFO L470 AbstractCegarLoop]: Abstraction has 52207 states and 238759 transitions. [2022-03-01 17:22:22,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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) [2022-03-01 17:22:22,423 INFO L276 IsEmpty]: Start isEmpty. Operand 52207 states and 238759 transitions. [2022-03-01 17:22:22,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:22:22,569 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:22:22,569 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:22:22,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-01 17:22:22,770 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,SelfDestructingSolverStorable72 [2022-03-01 17:22:22,770 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:22:22,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:22:22,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1933966981, now seen corresponding path program 23 times [2022-03-01 17:22:22,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:22:22,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754442488] [2022-03-01 17:22:22,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:22:22,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:22:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:22:22,801 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:22:22,801 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:22:22,801 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754442488] [2022-03-01 17:22:22,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754442488] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:22:22,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574706297] [2022-03-01 17:22:22,802 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:22:22,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:22,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:22:22,803 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) [2022-03-01 17:22:22,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-01 17:22:22,827 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-01 17:22:22,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:22:22,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:22:22,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:22:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:22,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:22:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:22:22,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574706297] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:22:22,985 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:22:22,985 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-03-01 17:22:22,985 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650229545] [2022-03-01 17:22:22,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:22:22,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:22:22,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:22:22,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:22:22,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:22:22,986 INFO L87 Difference]: Start difference. First operand 52207 states and 238759 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 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) [2022-03-01 17:22:24,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:22:24,292 INFO L93 Difference]: Finished difference Result 93968 states and 402691 transitions. [2022-03-01 17:22:24,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 17:22:24,293 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 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 29 [2022-03-01 17:22:24,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:22:25,102 INFO L225 Difference]: With dead ends: 93968 [2022-03-01 17:22:25,102 INFO L226 Difference]: Without dead ends: 93918 [2022-03-01 17:22:25,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2022-03-01 17:22:25,103 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 414 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:22:25,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 319 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:22:25,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93918 states. [2022-03-01 17:22:26,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93918 to 52209. [2022-03-01 17:22:26,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52209 states, 52208 states have (on average 4.573207171314741) internal successors, (238758), 52208 states have internal predecessors, (238758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:22:27,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52209 states to 52209 states and 238758 transitions. [2022-03-01 17:22:27,572 INFO L78 Accepts]: Start accepts. Automaton has 52209 states and 238758 transitions. Word has length 29 [2022-03-01 17:22:27,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:22:27,573 INFO L470 AbstractCegarLoop]: Abstraction has 52209 states and 238758 transitions. [2022-03-01 17:22:27,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 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) [2022-03-01 17:22:27,586 INFO L276 IsEmpty]: Start isEmpty. Operand 52209 states and 238758 transitions. [2022-03-01 17:22:27,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:22:27,752 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:22:27,752 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:22:27,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-01 17:22:27,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:27,952 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:22:27,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:22:27,953 INFO L85 PathProgramCache]: Analyzing trace with hash 70245641, now seen corresponding path program 24 times [2022-03-01 17:22:27,953 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:22:27,953 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370376214] [2022-03-01 17:22:27,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:22:27,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:22:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:22:27,992 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:27,992 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:22:27,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370376214] [2022-03-01 17:22:27,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370376214] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:22:27,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884394051] [2022-03-01 17:22:27,992 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:22:27,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:27,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:22:27,993 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) [2022-03-01 17:22:27,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-01 17:22:28,017 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-01 17:22:28,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:22:28,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:22:28,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:22:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:28,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:22:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:28,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884394051] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:22:28,176 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:22:28,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-03-01 17:22:28,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368660929] [2022-03-01 17:22:28,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:22:28,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 17:22:28,177 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:22:28,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 17:22:28,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-03-01 17:22:28,177 INFO L87 Difference]: Start difference. First operand 52209 states and 238758 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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) [2022-03-01 17:22:29,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:22:29,782 INFO L93 Difference]: Finished difference Result 86954 states and 378394 transitions. [2022-03-01 17:22:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-01 17:22:29,782 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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 29 [2022-03-01 17:22:29,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:22:30,581 INFO L225 Difference]: With dead ends: 86954 [2022-03-01 17:22:30,581 INFO L226 Difference]: Without dead ends: 86954 [2022-03-01 17:22:30,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 17:22:30,581 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 416 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:22:30,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 419 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:22:30,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86954 states. [2022-03-01 17:22:32,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86954 to 49798. [2022-03-01 17:22:32,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49798 states, 49797 states have (on average 4.546077072916039) internal successors, (226381), 49797 states have internal predecessors, (226381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:22:32,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49798 states to 49798 states and 226381 transitions. [2022-03-01 17:22:32,626 INFO L78 Accepts]: Start accepts. Automaton has 49798 states and 226381 transitions. Word has length 29 [2022-03-01 17:22:32,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:22:32,626 INFO L470 AbstractCegarLoop]: Abstraction has 49798 states and 226381 transitions. [2022-03-01 17:22:32,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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) [2022-03-01 17:22:32,626 INFO L276 IsEmpty]: Start isEmpty. Operand 49798 states and 226381 transitions. [2022-03-01 17:22:33,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:22:33,158 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:22:33,158 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:22:33,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-01 17:22:33,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-03-01 17:22:33,360 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:22:33,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:22:33,360 INFO L85 PathProgramCache]: Analyzing trace with hash 936509879, now seen corresponding path program 25 times [2022-03-01 17:22:33,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:22:33,360 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066388633] [2022-03-01 17:22:33,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:22:33,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:22:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:22:33,390 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:33,390 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:22:33,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066388633] [2022-03-01 17:22:33,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066388633] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:22:33,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112351552] [2022-03-01 17:22:33,390 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:22:33,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:33,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:22:33,391 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) [2022-03-01 17:22:33,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-01 17:22:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:22:33,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:22:33,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:22:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:33,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:22:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:33,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112351552] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:22:33,553 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:22:33,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-03-01 17:22:33,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001239880] [2022-03-01 17:22:33,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:22:33,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 17:22:33,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:22:33,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 17:22:33,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-03-01 17:22:33,554 INFO L87 Difference]: Start difference. First operand 49798 states and 226381 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 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) [2022-03-01 17:22:34,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:22:34,847 INFO L93 Difference]: Finished difference Result 80496 states and 344078 transitions. [2022-03-01 17:22:34,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 17:22:34,848 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 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 29 [2022-03-01 17:22:34,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:22:35,250 INFO L225 Difference]: With dead ends: 80496 [2022-03-01 17:22:35,250 INFO L226 Difference]: Without dead ends: 80421 [2022-03-01 17:22:35,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-03-01 17:22:35,250 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 376 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:22:35,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 379 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:22:35,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80421 states. [2022-03-01 17:22:36,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80421 to 50365. [2022-03-01 17:22:36,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50365 states, 50364 states have (on average 4.546441902946549) internal successors, (228977), 50364 states have internal predecessors, (228977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:22:37,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50365 states to 50365 states and 228977 transitions. [2022-03-01 17:22:37,477 INFO L78 Accepts]: Start accepts. Automaton has 50365 states and 228977 transitions. Word has length 29 [2022-03-01 17:22:37,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:22:37,477 INFO L470 AbstractCegarLoop]: Abstraction has 50365 states and 228977 transitions. [2022-03-01 17:22:37,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 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) [2022-03-01 17:22:37,477 INFO L276 IsEmpty]: Start isEmpty. Operand 50365 states and 228977 transitions. [2022-03-01 17:22:37,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:22:37,608 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:22:37,608 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:22:37,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-01 17:22:37,808 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,SelfDestructingSolverStorable75 [2022-03-01 17:22:37,808 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:22:37,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:22:37,809 INFO L85 PathProgramCache]: Analyzing trace with hash -468416107, now seen corresponding path program 26 times [2022-03-01 17:22:37,809 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:22:37,809 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310896868] [2022-03-01 17:22:37,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:22:37,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:22:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:22:37,851 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:37,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:22:37,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310896868] [2022-03-01 17:22:37,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310896868] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:22:37,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916453614] [2022-03-01 17:22:37,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:22:37,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:37,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:22:37,853 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) [2022-03-01 17:22:37,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-01 17:22:37,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:22:37,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:22:37,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:22:37,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:22:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:37,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:22:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:22:38,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916453614] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:22:38,012 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:22:38,012 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-03-01 17:22:38,012 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701074096] [2022-03-01 17:22:38,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:22:38,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 17:22:38,012 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:22:38,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 17:22:38,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-03-01 17:22:38,012 INFO L87 Difference]: Start difference. First operand 50365 states and 228977 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 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) [2022-03-01 17:22:39,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:22:39,801 INFO L93 Difference]: Finished difference Result 99418 states and 427978 transitions. [2022-03-01 17:22:39,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-01 17:22:39,801 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 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 29 [2022-03-01 17:22:39,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:22:40,417 INFO L225 Difference]: With dead ends: 99418 [2022-03-01 17:22:40,418 INFO L226 Difference]: Without dead ends: 99418 [2022-03-01 17:22:40,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 17:22:40,418 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 415 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:22:40,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 348 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:22:40,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99418 states. [2022-03-01 17:22:42,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99418 to 48495. [2022-03-01 17:22:42,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48495 states, 48494 states have (on average 4.518827071390275) internal successors, (219136), 48494 states have internal predecessors, (219136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:22:42,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48495 states to 48495 states and 219136 transitions. [2022-03-01 17:22:42,841 INFO L78 Accepts]: Start accepts. Automaton has 48495 states and 219136 transitions. Word has length 29 [2022-03-01 17:22:42,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:22:42,841 INFO L470 AbstractCegarLoop]: Abstraction has 48495 states and 219136 transitions. [2022-03-01 17:22:42,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 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) [2022-03-01 17:22:42,841 INFO L276 IsEmpty]: Start isEmpty. Operand 48495 states and 219136 transitions. [2022-03-01 17:22:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:22:42,956 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:22:42,956 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:22:42,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-03-01 17:22:43,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:43,159 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:22:43,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:22:43,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1517969131, now seen corresponding path program 27 times [2022-03-01 17:22:43,159 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:22:43,159 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94572529] [2022-03-01 17:22:43,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:22:43,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:22:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:22:43,200 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:43,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:22:43,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94572529] [2022-03-01 17:22:43,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94572529] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:22:43,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971655690] [2022-03-01 17:22:43,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:22:43,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:43,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:22:43,203 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) [2022-03-01 17:22:43,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-01 17:22:43,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:22:43,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:22:43,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:22:43,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:22:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:43,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:22:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:22:43,357 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971655690] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:22:43,357 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:22:43,357 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-03-01 17:22:43,357 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551002186] [2022-03-01 17:22:43,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:22:43,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 17:22:43,357 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:22:43,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 17:22:43,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-03-01 17:22:43,358 INFO L87 Difference]: Start difference. First operand 48495 states and 219136 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 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) [2022-03-01 17:22:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:22:44,588 INFO L93 Difference]: Finished difference Result 69880 states and 298246 transitions. [2022-03-01 17:22:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 17:22:44,589 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 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 29 [2022-03-01 17:22:44,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:22:44,885 INFO L225 Difference]: With dead ends: 69880 [2022-03-01 17:22:44,886 INFO L226 Difference]: Without dead ends: 69808 [2022-03-01 17:22:44,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-03-01 17:22:44,886 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 389 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:22:44,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 348 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:22:45,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69808 states. [2022-03-01 17:22:46,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69808 to 47135. [2022-03-01 17:22:46,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47135 states, 47134 states have (on average 4.529511605210676) internal successors, (213494), 47134 states have internal predecessors, (213494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:22:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47135 states to 47135 states and 213494 transitions. [2022-03-01 17:22:46,866 INFO L78 Accepts]: Start accepts. Automaton has 47135 states and 213494 transitions. Word has length 29 [2022-03-01 17:22:46,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:22:46,866 INFO L470 AbstractCegarLoop]: Abstraction has 47135 states and 213494 transitions. [2022-03-01 17:22:46,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 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) [2022-03-01 17:22:46,866 INFO L276 IsEmpty]: Start isEmpty. Operand 47135 states and 213494 transitions. [2022-03-01 17:22:46,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:22:46,987 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:22:46,987 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:22:47,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-01 17:22:47,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:47,187 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:22:47,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:22:47,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1260692049, now seen corresponding path program 28 times [2022-03-01 17:22:47,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:22:47,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979089783] [2022-03-01 17:22:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:22:47,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:22:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:22:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:47,231 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:22:47,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979089783] [2022-03-01 17:22:47,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979089783] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:22:47,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136745054] [2022-03-01 17:22:47,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:22:47,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:47,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:22:47,232 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) [2022-03-01 17:22:47,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-01 17:22:47,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:22:47,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:22:47,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:22:47,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:22:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:47,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:22:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:22:47,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136745054] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:22:47,414 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:22:47,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-01 17:22:47,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698016567] [2022-03-01 17:22:47,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:22:47,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:22:47,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:22:47,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:22:47,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:22:47,415 INFO L87 Difference]: Start difference. First operand 47135 states and 213494 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 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) [2022-03-01 17:22:48,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:22:48,766 INFO L93 Difference]: Finished difference Result 89708 states and 381495 transitions. [2022-03-01 17:22:48,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 17:22:48,767 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 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 29 [2022-03-01 17:22:48,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:22:49,510 INFO L225 Difference]: With dead ends: 89708 [2022-03-01 17:22:49,511 INFO L226 Difference]: Without dead ends: 89708 [2022-03-01 17:22:49,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2022-03-01 17:22:49,511 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 444 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:22:49,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 238 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:22:49,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89708 states. [2022-03-01 17:22:51,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89708 to 50510. [2022-03-01 17:22:51,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50510 states, 50509 states have (on average 4.561880060979232) internal successors, (230416), 50509 states have internal predecessors, (230416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:22:51,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50510 states to 50510 states and 230416 transitions. [2022-03-01 17:22:51,904 INFO L78 Accepts]: Start accepts. Automaton has 50510 states and 230416 transitions. Word has length 29 [2022-03-01 17:22:51,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:22:51,904 INFO L470 AbstractCegarLoop]: Abstraction has 50510 states and 230416 transitions. [2022-03-01 17:22:51,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 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) [2022-03-01 17:22:51,904 INFO L276 IsEmpty]: Start isEmpty. Operand 50510 states and 230416 transitions. [2022-03-01 17:22:52,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:22:52,091 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:22:52,091 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:22:52,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-03-01 17:22:52,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-03-01 17:22:52,292 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:22:52,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:22:52,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1022728657, now seen corresponding path program 29 times [2022-03-01 17:22:52,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:22:52,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140937867] [2022-03-01 17:22:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:22:52,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:22:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:22:52,318 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:52,318 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:22:52,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140937867] [2022-03-01 17:22:52,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140937867] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:22:52,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806943132] [2022-03-01 17:22:52,319 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:22:52,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:52,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:22:52,320 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) [2022-03-01 17:22:52,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-01 17:22:52,342 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 17:22:52,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:22:52,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:22:52,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:22:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:52,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:22:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:22:52,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806943132] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:22:52,479 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:22:52,479 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-01 17:22:52,479 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556515133] [2022-03-01 17:22:52,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:22:52,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:22:52,479 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:22:52,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:22:52,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:22:52,480 INFO L87 Difference]: Start difference. First operand 50510 states and 230416 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 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) [2022-03-01 17:22:53,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:22:53,795 INFO L93 Difference]: Finished difference Result 67513 states and 293577 transitions. [2022-03-01 17:22:53,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 17:22:53,795 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 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 29 [2022-03-01 17:22:53,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:22:54,445 INFO L225 Difference]: With dead ends: 67513 [2022-03-01 17:22:54,446 INFO L226 Difference]: Without dead ends: 67489 [2022-03-01 17:22:54,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-03-01 17:22:54,446 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 223 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:22:54,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 380 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:22:54,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67489 states. [2022-03-01 17:22:56,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67489 to 50508. [2022-03-01 17:22:56,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50508 states, 50507 states have (on average 4.561565723563071) internal successors, (230391), 50507 states have internal predecessors, (230391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:22:56,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50508 states to 50508 states and 230391 transitions. [2022-03-01 17:22:56,318 INFO L78 Accepts]: Start accepts. Automaton has 50508 states and 230391 transitions. Word has length 29 [2022-03-01 17:22:56,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:22:56,318 INFO L470 AbstractCegarLoop]: Abstraction has 50508 states and 230391 transitions. [2022-03-01 17:22:56,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 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) [2022-03-01 17:22:56,318 INFO L276 IsEmpty]: Start isEmpty. Operand 50508 states and 230391 transitions. [2022-03-01 17:22:56,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:22:56,807 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:22:56,808 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:22:56,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-03-01 17:22:57,019 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,SelfDestructingSolverStorable79 [2022-03-01 17:22:57,019 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:22:57,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:22:57,020 INFO L85 PathProgramCache]: Analyzing trace with hash -657767983, now seen corresponding path program 30 times [2022-03-01 17:22:57,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:22:57,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638587313] [2022-03-01 17:22:57,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:22:57,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:22:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:22:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:57,052 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:22:57,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638587313] [2022-03-01 17:22:57,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638587313] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:22:57,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023695944] [2022-03-01 17:22:57,052 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:22:57,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:22:57,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:22:57,053 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) [2022-03-01 17:22:57,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-01 17:22:57,076 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 17:22:57,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:22:57,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:22:57,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:22:57,145 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:22:57,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:22:57,202 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:22:57,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023695944] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:22:57,202 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:22:57,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-01 17:22:57,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209771161] [2022-03-01 17:22:57,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:22:57,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:22:57,202 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:22:57,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:22:57,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:22:57,203 INFO L87 Difference]: Start difference. First operand 50508 states and 230391 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 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) [2022-03-01 17:22:58,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:22:58,543 INFO L93 Difference]: Finished difference Result 77373 states and 335751 transitions. [2022-03-01 17:22:58,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 17:22:58,544 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 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 29 [2022-03-01 17:22:58,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:22:58,962 INFO L225 Difference]: With dead ends: 77373 [2022-03-01 17:22:58,962 INFO L226 Difference]: Without dead ends: 77373 [2022-03-01 17:22:58,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2022-03-01 17:22:58,962 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 280 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:22:58,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 431 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:22:59,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77373 states. [2022-03-01 17:23:00,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77373 to 50746. [2022-03-01 17:23:00,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50746 states, 50745 states have (on average 4.560074884225047) internal successors, (231401), 50745 states have internal predecessors, (231401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:01,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50746 states to 50746 states and 231401 transitions. [2022-03-01 17:23:01,184 INFO L78 Accepts]: Start accepts. Automaton has 50746 states and 231401 transitions. Word has length 29 [2022-03-01 17:23:01,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:01,184 INFO L470 AbstractCegarLoop]: Abstraction has 50746 states and 231401 transitions. [2022-03-01 17:23:01,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 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) [2022-03-01 17:23:01,184 INFO L276 IsEmpty]: Start isEmpty. Operand 50746 states and 231401 transitions. [2022-03-01 17:23:01,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:23:01,332 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:01,332 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:01,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:01,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:01,533 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:23:01,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:01,533 INFO L85 PathProgramCache]: Analyzing trace with hash 331698697, now seen corresponding path program 31 times [2022-03-01 17:23:01,533 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:01,533 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834610984] [2022-03-01 17:23:01,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:01,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:01,565 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:01,566 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:01,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834610984] [2022-03-01 17:23:01,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834610984] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:23:01,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160114142] [2022-03-01 17:23:01,566 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:23:01,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:01,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:01,567 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) [2022-03-01 17:23:01,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-01 17:23:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:01,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:23:01,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:23:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:01,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:23:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:23:01,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160114142] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:23:01,750 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:23:01,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-01 17:23:01,751 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290699151] [2022-03-01 17:23:01,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:23:01,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:23:01,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:01,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:23:01,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:23:01,752 INFO L87 Difference]: Start difference. First operand 50746 states and 231401 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 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) [2022-03-01 17:23:03,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:03,017 INFO L93 Difference]: Finished difference Result 86093 states and 364091 transitions. [2022-03-01 17:23:03,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-01 17:23:03,018 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 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 29 [2022-03-01 17:23:03,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:03,431 INFO L225 Difference]: With dead ends: 86093 [2022-03-01 17:23:03,432 INFO L226 Difference]: Without dead ends: 86068 [2022-03-01 17:23:03,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2022-03-01 17:23:03,432 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 453 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:03,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 285 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:23:03,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86068 states. [2022-03-01 17:23:05,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86068 to 50746. [2022-03-01 17:23:05,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50746 states, 50745 states have (on average 4.559838407724899) internal successors, (231389), 50745 states have internal predecessors, (231389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50746 states to 50746 states and 231389 transitions. [2022-03-01 17:23:05,558 INFO L78 Accepts]: Start accepts. Automaton has 50746 states and 231389 transitions. Word has length 29 [2022-03-01 17:23:05,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:05,558 INFO L470 AbstractCegarLoop]: Abstraction has 50746 states and 231389 transitions. [2022-03-01 17:23:05,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 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) [2022-03-01 17:23:05,558 INFO L276 IsEmpty]: Start isEmpty. Operand 50746 states and 231389 transitions. [2022-03-01 17:23:05,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:23:05,689 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:05,689 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:05,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:05,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:05,890 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:23:05,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:05,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1532022643, now seen corresponding path program 32 times [2022-03-01 17:23:05,890 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:05,891 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790988719] [2022-03-01 17:23:05,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:05,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:05,918 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:23:05,918 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:05,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790988719] [2022-03-01 17:23:05,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790988719] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:23:05,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296280808] [2022-03-01 17:23:05,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:23:05,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:05,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:05,919 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) [2022-03-01 17:23:05,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-01 17:23:05,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:23:05,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:23:05,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:23:05,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:23:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:06,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:23:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:23:06,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296280808] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:23:06,441 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:23:06,441 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-03-01 17:23:06,441 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500054055] [2022-03-01 17:23:06,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:23:06,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:23:06,442 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:06,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:23:06,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:23:06,442 INFO L87 Difference]: Start difference. First operand 50746 states and 231389 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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) [2022-03-01 17:23:08,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:08,386 INFO L93 Difference]: Finished difference Result 110373 states and 481503 transitions. [2022-03-01 17:23:08,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 17:23:08,386 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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 29 [2022-03-01 17:23:08,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:09,319 INFO L225 Difference]: With dead ends: 110373 [2022-03-01 17:23:09,320 INFO L226 Difference]: Without dead ends: 110373 [2022-03-01 17:23:09,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=565, Invalid=2191, Unknown=0, NotChecked=0, Total=2756 [2022-03-01 17:23:09,320 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 478 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:09,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 577 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 17:23:09,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110373 states. [2022-03-01 17:23:11,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110373 to 51698. [2022-03-01 17:23:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51698 states, 51697 states have (on average 4.5540166740816685) internal successors, (235429), 51697 states have internal predecessors, (235429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:11,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51698 states to 51698 states and 235429 transitions. [2022-03-01 17:23:11,871 INFO L78 Accepts]: Start accepts. Automaton has 51698 states and 235429 transitions. Word has length 29 [2022-03-01 17:23:11,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:11,871 INFO L470 AbstractCegarLoop]: Abstraction has 51698 states and 235429 transitions. [2022-03-01 17:23:11,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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) [2022-03-01 17:23:11,872 INFO L276 IsEmpty]: Start isEmpty. Operand 51698 states and 235429 transitions. [2022-03-01 17:23:12,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:23:12,021 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:12,021 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:12,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:12,222 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,SelfDestructingSolverStorable82 [2022-03-01 17:23:12,222 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:23:12,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:12,223 INFO L85 PathProgramCache]: Analyzing trace with hash -665758405, now seen corresponding path program 33 times [2022-03-01 17:23:12,223 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:12,223 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672299819] [2022-03-01 17:23:12,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:12,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:23:12,251 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:12,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672299819] [2022-03-01 17:23:12,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672299819] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:23:12,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166566317] [2022-03-01 17:23:12,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:23:12,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:12,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:12,252 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) [2022-03-01 17:23:12,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-01 17:23:12,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 17:23:12,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:23:12,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:23:12,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:23:12,353 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:12,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:23:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:23:12,406 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166566317] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:23:12,406 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:23:12,406 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-03-01 17:23:12,407 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811864854] [2022-03-01 17:23:12,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:23:12,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:23:12,407 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:12,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:23:12,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:23:12,407 INFO L87 Difference]: Start difference. First operand 51698 states and 235429 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 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) [2022-03-01 17:23:13,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:13,894 INFO L93 Difference]: Finished difference Result 100748 states and 423395 transitions. [2022-03-01 17:23:13,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 17:23:13,894 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 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 29 [2022-03-01 17:23:13,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:14,733 INFO L225 Difference]: With dead ends: 100748 [2022-03-01 17:23:14,733 INFO L226 Difference]: Without dead ends: 100498 [2022-03-01 17:23:14,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 17:23:14,733 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 435 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:14,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 414 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:23:14,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100498 states. [2022-03-01 17:23:16,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100498 to 51700. [2022-03-01 17:23:16,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51700 states, 51699 states have (on average 4.553163504129674) internal successors, (235394), 51699 states have internal predecessors, (235394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51700 states to 51700 states and 235394 transitions. [2022-03-01 17:23:17,208 INFO L78 Accepts]: Start accepts. Automaton has 51700 states and 235394 transitions. Word has length 29 [2022-03-01 17:23:17,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:17,208 INFO L470 AbstractCegarLoop]: Abstraction has 51700 states and 235394 transitions. [2022-03-01 17:23:17,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 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) [2022-03-01 17:23:17,208 INFO L276 IsEmpty]: Start isEmpty. Operand 51700 states and 235394 transitions. [2022-03-01 17:23:17,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:23:17,354 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:17,354 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:17,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:17,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:17,555 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:23:17,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:17,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1816433037, now seen corresponding path program 34 times [2022-03-01 17:23:17,555 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:17,555 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417538400] [2022-03-01 17:23:17,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:17,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:17,585 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:17,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417538400] [2022-03-01 17:23:17,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417538400] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:23:17,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899828213] [2022-03-01 17:23:17,585 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:23:17,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:17,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:17,587 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) [2022-03-01 17:23:17,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-01 17:23:17,608 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:23:17,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:23:17,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:23:17,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:23:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:17,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:23:17,736 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:17,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899828213] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:23:17,736 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:23:17,736 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-01 17:23:17,736 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289846281] [2022-03-01 17:23:17,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:23:17,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:23:17,737 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:17,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:23:17,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:23:17,737 INFO L87 Difference]: Start difference. First operand 51700 states and 235394 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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) [2022-03-01 17:23:19,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:19,919 INFO L93 Difference]: Finished difference Result 96462 states and 425424 transitions. [2022-03-01 17:23:19,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 17:23:19,927 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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 29 [2022-03-01 17:23:19,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:20,522 INFO L225 Difference]: With dead ends: 96462 [2022-03-01 17:23:20,522 INFO L226 Difference]: Without dead ends: 96437 [2022-03-01 17:23:20,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=1400, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 17:23:20,523 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 248 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:20,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 654 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 17:23:20,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96437 states. [2022-03-01 17:23:22,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96437 to 53421. [2022-03-01 17:23:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53421 states, 53420 states have (on average 4.527517783601647) internal successors, (241860), 53420 states have internal predecessors, (241860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:22,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53421 states to 53421 states and 241860 transitions. [2022-03-01 17:23:22,987 INFO L78 Accepts]: Start accepts. Automaton has 53421 states and 241860 transitions. Word has length 29 [2022-03-01 17:23:22,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:22,987 INFO L470 AbstractCegarLoop]: Abstraction has 53421 states and 241860 transitions. [2022-03-01 17:23:22,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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) [2022-03-01 17:23:22,988 INFO L276 IsEmpty]: Start isEmpty. Operand 53421 states and 241860 transitions. [2022-03-01 17:23:23,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:23:23,133 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:23,133 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:23,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:23,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:23,334 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:23:23,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:23,334 INFO L85 PathProgramCache]: Analyzing trace with hash 303066167, now seen corresponding path program 35 times [2022-03-01 17:23:23,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:23,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134853947] [2022-03-01 17:23:23,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:23,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:23,366 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:23,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134853947] [2022-03-01 17:23:23,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134853947] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:23:23,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312787721] [2022-03-01 17:23:23,366 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:23:23,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:23,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:23,369 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) [2022-03-01 17:23:23,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-01 17:23:23,392 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 17:23:23,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:23:23,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 17:23:23,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:23:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:23,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:23:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:23,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312787721] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:23:23,549 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:23:23,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-01 17:23:23,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852859028] [2022-03-01 17:23:23,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:23:23,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:23:23,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:23,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:23:23,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:23:23,550 INFO L87 Difference]: Start difference. First operand 53421 states and 241860 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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) [2022-03-01 17:23:24,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:24,856 INFO L93 Difference]: Finished difference Result 84563 states and 356651 transitions. [2022-03-01 17:23:24,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 17:23:24,856 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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 29 [2022-03-01 17:23:24,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:25,526 INFO L225 Difference]: With dead ends: 84563 [2022-03-01 17:23:25,526 INFO L226 Difference]: Without dead ends: 84422 [2022-03-01 17:23:25,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 17:23:25,527 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 480 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:25,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 292 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 17:23:25,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84422 states. [2022-03-01 17:23:27,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84422 to 54317. [2022-03-01 17:23:27,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54317 states, 54316 states have (on average 4.513716032108403) internal successors, (245167), 54316 states have internal predecessors, (245167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:28,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54317 states to 54317 states and 245167 transitions. [2022-03-01 17:23:28,061 INFO L78 Accepts]: Start accepts. Automaton has 54317 states and 245167 transitions. Word has length 29 [2022-03-01 17:23:28,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:28,061 INFO L470 AbstractCegarLoop]: Abstraction has 54317 states and 245167 transitions. [2022-03-01 17:23:28,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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) [2022-03-01 17:23:28,061 INFO L276 IsEmpty]: Start isEmpty. Operand 54317 states and 245167 transitions. [2022-03-01 17:23:28,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:23:28,332 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:28,332 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:28,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:28,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:28,547 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:23:28,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:28,548 INFO L85 PathProgramCache]: Analyzing trace with hash 971511529, now seen corresponding path program 36 times [2022-03-01 17:23:28,548 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:28,548 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102655646] [2022-03-01 17:23:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:28,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:28,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:28,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102655646] [2022-03-01 17:23:28,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102655646] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:23:28,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363694596] [2022-03-01 17:23:28,665 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:23:28,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:28,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:28,666 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) [2022-03-01 17:23:28,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-01 17:23:28,692 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 17:23:28,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:23:28,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:23:28,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:23:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:29,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:23:29,220 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:29,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363694596] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:23:29,220 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:23:29,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 8 [2022-03-01 17:23:29,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321657870] [2022-03-01 17:23:29,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:23:29,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-01 17:23:29,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:29,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-01 17:23:29,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-01 17:23:29,221 INFO L87 Difference]: Start difference. First operand 54317 states and 245167 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 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) [2022-03-01 17:23:30,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:30,395 INFO L93 Difference]: Finished difference Result 56833 states and 254304 transitions. [2022-03-01 17:23:30,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 17:23:30,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 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 31 [2022-03-01 17:23:30,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:30,670 INFO L225 Difference]: With dead ends: 56833 [2022-03-01 17:23:30,670 INFO L226 Difference]: Without dead ends: 56765 [2022-03-01 17:23:30,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 10 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-01 17:23:30,671 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 95 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:30,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 178 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:23:30,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56765 states. [2022-03-01 17:23:32,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56765 to 55387. [2022-03-01 17:23:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55387 states, 55386 states have (on average 4.503304084064565) internal successors, (249420), 55386 states have internal predecessors, (249420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:32,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55387 states to 55387 states and 249420 transitions. [2022-03-01 17:23:32,693 INFO L78 Accepts]: Start accepts. Automaton has 55387 states and 249420 transitions. Word has length 31 [2022-03-01 17:23:32,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:32,693 INFO L470 AbstractCegarLoop]: Abstraction has 55387 states and 249420 transitions. [2022-03-01 17:23:32,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 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) [2022-03-01 17:23:32,694 INFO L276 IsEmpty]: Start isEmpty. Operand 55387 states and 249420 transitions. [2022-03-01 17:23:32,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:23:32,873 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:32,873 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:32,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:33,073 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,SelfDestructingSolverStorable86 [2022-03-01 17:23:33,074 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:23:33,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:33,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1033676257, now seen corresponding path program 37 times [2022-03-01 17:23:33,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:33,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986035028] [2022-03-01 17:23:33,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:33,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:33,132 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:23:33,132 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:33,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986035028] [2022-03-01 17:23:33,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986035028] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:23:33,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405635202] [2022-03-01 17:23:33,132 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:23:33,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:33,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:33,133 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) [2022-03-01 17:23:33,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-01 17:23:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:33,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:23:33,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:23:33,519 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:33,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:23:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:23:33,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405635202] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:23:33,655 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:23:33,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 9 [2022-03-01 17:23:33,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959348699] [2022-03-01 17:23:33,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:23:33,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:23:33,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:33,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:23:33,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:23:33,656 INFO L87 Difference]: Start difference. First operand 55387 states and 249420 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 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) [2022-03-01 17:23:34,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:34,759 INFO L93 Difference]: Finished difference Result 57655 states and 257614 transitions. [2022-03-01 17:23:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 17:23:34,759 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 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 31 [2022-03-01 17:23:34,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:35,024 INFO L225 Difference]: With dead ends: 57655 [2022-03-01 17:23:35,025 INFO L226 Difference]: Without dead ends: 57519 [2022-03-01 17:23:35,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 11 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:23:35,025 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 119 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:35,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 205 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:23:35,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57519 states. [2022-03-01 17:23:36,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57519 to 55763. [2022-03-01 17:23:36,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55763 states, 55762 states have (on average 4.50256447042789) internal successors, (251072), 55762 states have internal predecessors, (251072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:37,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55763 states to 55763 states and 251072 transitions. [2022-03-01 17:23:37,086 INFO L78 Accepts]: Start accepts. Automaton has 55763 states and 251072 transitions. Word has length 31 [2022-03-01 17:23:37,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:37,086 INFO L470 AbstractCegarLoop]: Abstraction has 55763 states and 251072 transitions. [2022-03-01 17:23:37,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 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) [2022-03-01 17:23:37,086 INFO L276 IsEmpty]: Start isEmpty. Operand 55763 states and 251072 transitions. [2022-03-01 17:23:37,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:23:37,253 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:37,253 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:37,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:37,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-03-01 17:23:37,454 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:23:37,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:37,454 INFO L85 PathProgramCache]: Analyzing trace with hash 351590437, now seen corresponding path program 10 times [2022-03-01 17:23:37,454 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:37,454 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941400490] [2022-03-01 17:23:37,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:37,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:37,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:37,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941400490] [2022-03-01 17:23:37,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941400490] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:23:37,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086625427] [2022-03-01 17:23:37,563 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:23:37,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:37,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:37,564 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) [2022-03-01 17:23:37,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-01 17:23:37,590 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:23:37,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:23:37,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:23:37,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:23:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:38,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:23:38,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:38,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086625427] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:23:38,180 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:23:38,181 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 10 [2022-03-01 17:23:38,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003514026] [2022-03-01 17:23:38,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:23:38,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:23:38,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:23:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:23:38,181 INFO L87 Difference]: Start difference. First operand 55763 states and 251072 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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) [2022-03-01 17:23:39,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:39,300 INFO L93 Difference]: Finished difference Result 57519 states and 257238 transitions. [2022-03-01 17:23:39,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:23:39,301 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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 31 [2022-03-01 17:23:39,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:39,537 INFO L225 Difference]: With dead ends: 57519 [2022-03-01 17:23:39,537 INFO L226 Difference]: Without dead ends: 57055 [2022-03-01 17:23:39,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:23:39,537 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 83 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:39,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 217 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:23:39,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57055 states. [2022-03-01 17:23:40,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57055 to 56239. [2022-03-01 17:23:41,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56239 states, 56238 states have (on average 4.491767132543831) internal successors, (252608), 56238 states have internal predecessors, (252608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56239 states to 56239 states and 252608 transitions. [2022-03-01 17:23:41,558 INFO L78 Accepts]: Start accepts. Automaton has 56239 states and 252608 transitions. Word has length 31 [2022-03-01 17:23:41,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:41,558 INFO L470 AbstractCegarLoop]: Abstraction has 56239 states and 252608 transitions. [2022-03-01 17:23:41,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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) [2022-03-01 17:23:41,558 INFO L276 IsEmpty]: Start isEmpty. Operand 56239 states and 252608 transitions. [2022-03-01 17:23:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:23:41,703 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:41,703 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:41,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:41,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-03-01 17:23:41,904 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:23:41,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:41,904 INFO L85 PathProgramCache]: Analyzing trace with hash 948873901, now seen corresponding path program 11 times [2022-03-01 17:23:41,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:41,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153616209] [2022-03-01 17:23:41,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:41,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:41,985 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:23:41,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:41,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153616209] [2022-03-01 17:23:41,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153616209] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:23:41,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371652712] [2022-03-01 17:23:41,985 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:23:41,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:41,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:41,987 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) [2022-03-01 17:23:41,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-01 17:23:42,017 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 17:23:42,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:23:42,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:23:42,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:23:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:42,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:23:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:23:42,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371652712] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:23:42,780 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:23:42,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 9 [2022-03-01 17:23:42,781 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889583570] [2022-03-01 17:23:42,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:23:42,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:23:42,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:42,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:23:42,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:23:42,781 INFO L87 Difference]: Start difference. First operand 56239 states and 252608 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 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) [2022-03-01 17:23:43,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:43,497 INFO L93 Difference]: Finished difference Result 57673 states and 257758 transitions. [2022-03-01 17:23:43,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 17:23:43,497 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 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 31 [2022-03-01 17:23:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:43,980 INFO L225 Difference]: With dead ends: 57673 [2022-03-01 17:23:43,980 INFO L226 Difference]: Without dead ends: 57311 [2022-03-01 17:23:43,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 11 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:23:43,980 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 90 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:43,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 168 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:23:44,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57311 states. [2022-03-01 17:23:45,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57311 to 56439. [2022-03-01 17:23:45,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56439 states, 56438 states have (on average 4.494454091215139) internal successors, (253658), 56438 states have internal predecessors, (253658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:45,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56439 states to 56439 states and 253658 transitions. [2022-03-01 17:23:45,709 INFO L78 Accepts]: Start accepts. Automaton has 56439 states and 253658 transitions. Word has length 31 [2022-03-01 17:23:45,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:45,709 INFO L470 AbstractCegarLoop]: Abstraction has 56439 states and 253658 transitions. [2022-03-01 17:23:45,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 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) [2022-03-01 17:23:45,709 INFO L276 IsEmpty]: Start isEmpty. Operand 56439 states and 253658 transitions. [2022-03-01 17:23:45,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:23:45,853 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:45,853 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:45,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:46,054 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,SelfDestructingSolverStorable89 [2022-03-01 17:23:46,054 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:23:46,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:46,054 INFO L85 PathProgramCache]: Analyzing trace with hash -847330975, now seen corresponding path program 12 times [2022-03-01 17:23:46,054 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:46,054 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693280040] [2022-03-01 17:23:46,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:46,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:46,138 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:46,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693280040] [2022-03-01 17:23:46,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693280040] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:23:46,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478930097] [2022-03-01 17:23:46,138 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:23:46,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:46,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:46,140 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) [2022-03-01 17:23:46,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-01 17:23:46,165 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 17:23:46,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:23:46,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:23:46,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:23:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:46,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:23:46,972 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:46,972 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478930097] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:23:46,972 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:23:46,972 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 9 [2022-03-01 17:23:46,972 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38708068] [2022-03-01 17:23:46,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:23:46,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:23:46,973 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:46,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:23:46,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:23:46,973 INFO L87 Difference]: Start difference. First operand 56439 states and 253658 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 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) [2022-03-01 17:23:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:47,686 INFO L93 Difference]: Finished difference Result 58399 states and 261040 transitions. [2022-03-01 17:23:47,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 17:23:47,686 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 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 31 [2022-03-01 17:23:47,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:48,204 INFO L225 Difference]: With dead ends: 58399 [2022-03-01 17:23:48,204 INFO L226 Difference]: Without dead ends: 58007 [2022-03-01 17:23:48,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 11 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:23:48,204 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 74 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:48,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 133 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:23:48,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58007 states. [2022-03-01 17:23:49,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58007 to 56971. [2022-03-01 17:23:49,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56971 states, 56970 states have (on average 4.493487800596806) internal successors, (255994), 56970 states have internal predecessors, (255994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56971 states to 56971 states and 255994 transitions. [2022-03-01 17:23:50,001 INFO L78 Accepts]: Start accepts. Automaton has 56971 states and 255994 transitions. Word has length 31 [2022-03-01 17:23:50,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:50,001 INFO L470 AbstractCegarLoop]: Abstraction has 56971 states and 255994 transitions. [2022-03-01 17:23:50,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 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) [2022-03-01 17:23:50,001 INFO L276 IsEmpty]: Start isEmpty. Operand 56971 states and 255994 transitions. [2022-03-01 17:23:50,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:23:50,166 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:50,166 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:50,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:50,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:50,370 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:23:50,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:50,371 INFO L85 PathProgramCache]: Analyzing trace with hash -642090763, now seen corresponding path program 13 times [2022-03-01 17:23:50,371 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:50,371 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612704961] [2022-03-01 17:23:50,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:50,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:50,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:50,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612704961] [2022-03-01 17:23:50,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612704961] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:23:50,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518685770] [2022-03-01 17:23:50,925 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:23:50,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:50,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:50,928 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) [2022-03-01 17:23:50,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-01 17:23:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:50,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:23:50,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:23:51,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:51,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:23:51,494 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:51,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518685770] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:23:51,494 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:23:51,494 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2022-03-01 17:23:51,494 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278989406] [2022-03-01 17:23:51,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:23:51,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:23:51,495 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:51,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:23:51,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:23:51,495 INFO L87 Difference]: Start difference. First operand 56971 states and 255994 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 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) [2022-03-01 17:23:52,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:52,557 INFO L93 Difference]: Finished difference Result 59527 states and 265352 transitions. [2022-03-01 17:23:52,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:23:52,558 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 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 31 [2022-03-01 17:23:52,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:52,833 INFO L225 Difference]: With dead ends: 59527 [2022-03-01 17:23:52,834 INFO L226 Difference]: Without dead ends: 58923 [2022-03-01 17:23:52,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 10 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:23:52,834 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 92 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:52,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 222 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 17:23:52,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58923 states. [2022-03-01 17:23:54,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58923 to 56299. [2022-03-01 17:23:54,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56299 states, 56298 states have (on average 4.497069167643611) internal successors, (253176), 56298 states have internal predecessors, (253176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:54,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56299 states to 56299 states and 253176 transitions. [2022-03-01 17:23:54,814 INFO L78 Accepts]: Start accepts. Automaton has 56299 states and 253176 transitions. Word has length 31 [2022-03-01 17:23:54,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:54,815 INFO L470 AbstractCegarLoop]: Abstraction has 56299 states and 253176 transitions. [2022-03-01 17:23:54,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 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) [2022-03-01 17:23:54,815 INFO L276 IsEmpty]: Start isEmpty. Operand 56299 states and 253176 transitions. [2022-03-01 17:23:55,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:23:55,025 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:55,025 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:55,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:55,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:55,226 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:23:55,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:55,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1723749211, now seen corresponding path program 14 times [2022-03-01 17:23:55,226 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:55,226 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866507597] [2022-03-01 17:23:55,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:55,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:55,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:23:55,296 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:55,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866507597] [2022-03-01 17:23:55,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866507597] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:23:55,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112908890] [2022-03-01 17:23:55,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:23:55,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:55,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:55,298 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) [2022-03-01 17:23:55,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-03-01 17:23:55,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:23:55,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:23:55,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:23:55,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:23:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:55,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:23:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:23:55,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112908890] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:23:55,837 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:23:55,837 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 8 [2022-03-01 17:23:55,837 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249428855] [2022-03-01 17:23:55,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:23:55,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-01 17:23:55,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:55,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-01 17:23:55,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-01 17:23:55,838 INFO L87 Difference]: Start difference. First operand 56299 states and 253176 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 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) [2022-03-01 17:23:56,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:56,982 INFO L93 Difference]: Finished difference Result 57119 states and 256248 transitions. [2022-03-01 17:23:56,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 17:23:56,983 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 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 31 [2022-03-01 17:23:56,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:57,448 INFO L225 Difference]: With dead ends: 57119 [2022-03-01 17:23:57,448 INFO L226 Difference]: Without dead ends: 56923 [2022-03-01 17:23:57,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 13 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-01 17:23:57,448 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 63 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:57,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 138 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:23:57,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56923 states. [2022-03-01 17:23:58,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56923 to 56637. [2022-03-01 17:23:58,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56637 states, 56636 states have (on average 4.496044918426443) internal successors, (254638), 56636 states have internal predecessors, (254638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:59,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56637 states to 56637 states and 254638 transitions. [2022-03-01 17:23:59,540 INFO L78 Accepts]: Start accepts. Automaton has 56637 states and 254638 transitions. Word has length 31 [2022-03-01 17:23:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:59,540 INFO L470 AbstractCegarLoop]: Abstraction has 56637 states and 254638 transitions. [2022-03-01 17:23:59,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 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) [2022-03-01 17:23:59,541 INFO L276 IsEmpty]: Start isEmpty. Operand 56637 states and 254638 transitions. [2022-03-01 17:23:59,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:23:59,733 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:59,733 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:59,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:59,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:59,934 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:23:59,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:59,935 INFO L85 PathProgramCache]: Analyzing trace with hash -2056401095, now seen corresponding path program 15 times [2022-03-01 17:23:59,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:59,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894197999] [2022-03-01 17:23:59,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:59,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:00,014 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:00,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894197999] [2022-03-01 17:24:00,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894197999] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:00,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675551753] [2022-03-01 17:24:00,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:24:00,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:00,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:00,015 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) [2022-03-01 17:24:00,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-03-01 17:24:00,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:24:00,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:24:00,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:24:00,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:00,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:00,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675551753] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:00,536 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:00,536 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 9 [2022-03-01 17:24:00,536 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325811770] [2022-03-01 17:24:00,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:00,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:24:00,536 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:00,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:24:00,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:24:00,537 INFO L87 Difference]: Start difference. First operand 56637 states and 254638 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 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) [2022-03-01 17:24:01,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:01,557 INFO L93 Difference]: Finished difference Result 58909 states and 263376 transitions. [2022-03-01 17:24:01,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 17:24:01,558 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 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 31 [2022-03-01 17:24:01,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:01,839 INFO L225 Difference]: With dead ends: 58909 [2022-03-01 17:24:01,839 INFO L226 Difference]: Without dead ends: 58565 [2022-03-01 17:24:01,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 12 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:24:01,840 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 72 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:01,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 153 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:24:01,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58565 states. [2022-03-01 17:24:03,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58565 to 57247. [2022-03-01 17:24:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57247 states, 57246 states have (on average 4.4951961709115045) internal successors, (257332), 57246 states have internal predecessors, (257332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:03,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57247 states to 57247 states and 257332 transitions. [2022-03-01 17:24:03,976 INFO L78 Accepts]: Start accepts. Automaton has 57247 states and 257332 transitions. Word has length 31 [2022-03-01 17:24:03,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:03,976 INFO L470 AbstractCegarLoop]: Abstraction has 57247 states and 257332 transitions. [2022-03-01 17:24:03,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 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) [2022-03-01 17:24:03,977 INFO L276 IsEmpty]: Start isEmpty. Operand 57247 states and 257332 transitions. [2022-03-01 17:24:04,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:24:04,140 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:04,140 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:04,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-03-01 17:24:04,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:04,341 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:24:04,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:04,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1754347509, now seen corresponding path program 16 times [2022-03-01 17:24:04,341 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:04,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898168840] [2022-03-01 17:24:04,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:04,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:04,443 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:04,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898168840] [2022-03-01 17:24:04,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898168840] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:04,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955971681] [2022-03-01 17:24:04,443 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:24:04,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:04,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:04,444 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) [2022-03-01 17:24:04,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-03-01 17:24:04,472 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:24:04,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:24:04,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:24:04,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:04,799 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:04,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:04,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955971681] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:04,951 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:04,951 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 10 [2022-03-01 17:24:04,951 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111164889] [2022-03-01 17:24:04,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:04,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:24:04,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:04,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:24:04,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:24:04,952 INFO L87 Difference]: Start difference. First operand 57247 states and 257332 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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) [2022-03-01 17:24:06,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:06,084 INFO L93 Difference]: Finished difference Result 59115 states and 263810 transitions. [2022-03-01 17:24:06,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:24:06,085 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 31 [2022-03-01 17:24:06,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:06,333 INFO L225 Difference]: With dead ends: 59115 [2022-03-01 17:24:06,333 INFO L226 Difference]: Without dead ends: 58527 [2022-03-01 17:24:06,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:24:06,333 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 89 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:06,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 196 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:24:06,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58527 states. [2022-03-01 17:24:07,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58527 to 56075. [2022-03-01 17:24:07,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56075 states, 56074 states have (on average 4.494632093305275) internal successors, (252032), 56074 states have internal predecessors, (252032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56075 states to 56075 states and 252032 transitions. [2022-03-01 17:24:08,368 INFO L78 Accepts]: Start accepts. Automaton has 56075 states and 252032 transitions. Word has length 31 [2022-03-01 17:24:08,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:08,368 INFO L470 AbstractCegarLoop]: Abstraction has 56075 states and 252032 transitions. [2022-03-01 17:24:08,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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) [2022-03-01 17:24:08,368 INFO L276 IsEmpty]: Start isEmpty. Operand 56075 states and 252032 transitions. [2022-03-01 17:24:08,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:24:08,517 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:08,517 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:08,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-03-01 17:24:08,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:08,718 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:24:08,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:08,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1119130149, now seen corresponding path program 17 times [2022-03-01 17:24:08,718 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:08,718 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422574136] [2022-03-01 17:24:08,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:08,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:24:08,795 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:08,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422574136] [2022-03-01 17:24:08,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422574136] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:08,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391263453] [2022-03-01 17:24:08,795 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:24:08,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:08,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:08,797 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) [2022-03-01 17:24:08,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-03-01 17:24:08,820 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-01 17:24:08,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:24:08,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:24:08,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:09,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:24:09,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391263453] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:09,728 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:09,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2022-03-01 17:24:09,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575239112] [2022-03-01 17:24:09,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:09,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:24:09,728 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:09,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:24:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:24:09,729 INFO L87 Difference]: Start difference. First operand 56075 states and 252032 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 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) [2022-03-01 17:24:10,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:10,516 INFO L93 Difference]: Finished difference Result 58567 states and 261228 transitions. [2022-03-01 17:24:10,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:24:10,517 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 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 31 [2022-03-01 17:24:10,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:11,006 INFO L225 Difference]: With dead ends: 58567 [2022-03-01 17:24:11,006 INFO L226 Difference]: Without dead ends: 58151 [2022-03-01 17:24:11,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 10 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:24:11,007 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 77 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:11,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 177 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:24:11,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58151 states. [2022-03-01 17:24:12,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58151 to 56555. [2022-03-01 17:24:12,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56555 states, 56554 states have (on average 4.4922728719453975) internal successors, (254056), 56554 states have internal predecessors, (254056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:12,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56555 states to 56555 states and 254056 transitions. [2022-03-01 17:24:12,769 INFO L78 Accepts]: Start accepts. Automaton has 56555 states and 254056 transitions. Word has length 31 [2022-03-01 17:24:12,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:12,769 INFO L470 AbstractCegarLoop]: Abstraction has 56555 states and 254056 transitions. [2022-03-01 17:24:12,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 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) [2022-03-01 17:24:12,769 INFO L276 IsEmpty]: Start isEmpty. Operand 56555 states and 254056 transitions. [2022-03-01 17:24:12,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:24:12,913 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:12,913 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:12,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-03-01 17:24:13,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-03-01 17:24:13,114 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:24:13,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:13,114 INFO L85 PathProgramCache]: Analyzing trace with hash -970438819, now seen corresponding path program 18 times [2022-03-01 17:24:13,114 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:13,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390322447] [2022-03-01 17:24:13,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:13,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:24:13,221 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:13,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390322447] [2022-03-01 17:24:13,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390322447] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:13,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224449275] [2022-03-01 17:24:13,221 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:24:13,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:13,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:13,222 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) [2022-03-01 17:24:13,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-03-01 17:24:13,250 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-01 17:24:13,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:24:13,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:24:13,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:14,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:14,268 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:24:14,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224449275] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:14,269 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:14,269 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 11 [2022-03-01 17:24:14,269 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760236884] [2022-03-01 17:24:14,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:14,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 17:24:14,269 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:14,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 17:24:14,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-03-01 17:24:14,269 INFO L87 Difference]: Start difference. First operand 56555 states and 254056 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 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) [2022-03-01 17:24:15,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:15,331 INFO L93 Difference]: Finished difference Result 59058 states and 263018 transitions. [2022-03-01 17:24:15,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 17:24:15,332 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 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 31 [2022-03-01 17:24:15,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:15,612 INFO L225 Difference]: With dead ends: 59058 [2022-03-01 17:24:15,612 INFO L226 Difference]: Without dead ends: 58562 [2022-03-01 17:24:15,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 10 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-03-01 17:24:15,612 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 87 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:15,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 245 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 17:24:15,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58562 states. [2022-03-01 17:24:16,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58562 to 56518. [2022-03-01 17:24:17,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56518 states, 56517 states have (on average 4.484562167135552) internal successors, (253454), 56517 states have internal predecessors, (253454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:17,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56518 states to 56518 states and 253454 transitions. [2022-03-01 17:24:17,656 INFO L78 Accepts]: Start accepts. Automaton has 56518 states and 253454 transitions. Word has length 31 [2022-03-01 17:24:17,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:17,656 INFO L470 AbstractCegarLoop]: Abstraction has 56518 states and 253454 transitions. [2022-03-01 17:24:17,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 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) [2022-03-01 17:24:17,656 INFO L276 IsEmpty]: Start isEmpty. Operand 56518 states and 253454 transitions. [2022-03-01 17:24:17,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:24:17,835 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:17,836 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:17,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-03-01 17:24:18,036 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,SelfDestructingSolverStorable96 [2022-03-01 17:24:18,036 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:24:18,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:18,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1172911963, now seen corresponding path program 19 times [2022-03-01 17:24:18,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:18,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677483893] [2022-03-01 17:24:18,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:18,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 17:24:18,112 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:18,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677483893] [2022-03-01 17:24:18,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677483893] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:18,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732484003] [2022-03-01 17:24:18,112 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:24:18,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:18,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:18,113 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) [2022-03-01 17:24:18,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-03-01 17:24:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:18,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:24:18,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:18,547 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:18,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:18,684 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 17:24:18,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732484003] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:18,684 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:18,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 10 [2022-03-01 17:24:18,685 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813438026] [2022-03-01 17:24:18,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:18,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:24:18,685 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:18,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:24:18,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:24:18,685 INFO L87 Difference]: Start difference. First operand 56518 states and 253454 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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) [2022-03-01 17:24:19,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:19,913 INFO L93 Difference]: Finished difference Result 59706 states and 264868 transitions. [2022-03-01 17:24:19,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:24:19,914 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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 31 [2022-03-01 17:24:19,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:20,195 INFO L225 Difference]: With dead ends: 59706 [2022-03-01 17:24:20,195 INFO L226 Difference]: Without dead ends: 59062 [2022-03-01 17:24:20,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 12 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:24:20,195 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 104 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:20,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 245 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 17:24:20,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59062 states. [2022-03-01 17:24:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59062 to 56790. [2022-03-01 17:24:21,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56790 states, 56789 states have (on average 4.4874183380584265) internal successors, (254836), 56789 states have internal predecessors, (254836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:22,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56790 states to 56790 states and 254836 transitions. [2022-03-01 17:24:22,300 INFO L78 Accepts]: Start accepts. Automaton has 56790 states and 254836 transitions. Word has length 31 [2022-03-01 17:24:22,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:22,300 INFO L470 AbstractCegarLoop]: Abstraction has 56790 states and 254836 transitions. [2022-03-01 17:24:22,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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) [2022-03-01 17:24:22,300 INFO L276 IsEmpty]: Start isEmpty. Operand 56790 states and 254836 transitions. [2022-03-01 17:24:22,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:24:22,460 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:22,460 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:22,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-03-01 17:24:22,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:22,660 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:24:22,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:22,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1348270123, now seen corresponding path program 20 times [2022-03-01 17:24:22,661 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:22,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596747872] [2022-03-01 17:24:22,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:22,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:22,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:24:22,741 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:22,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596747872] [2022-03-01 17:24:22,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596747872] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:22,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615502168] [2022-03-01 17:24:22,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:24:22,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:22,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:22,742 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) [2022-03-01 17:24:22,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-03-01 17:24:22,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:24:22,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:24:22,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:24:22,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:23,161 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:23,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:23,309 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:24:23,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615502168] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:23,309 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:23,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 10 [2022-03-01 17:24:23,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824095943] [2022-03-01 17:24:23,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:23,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:24:23,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:23,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:24:23,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:24:23,310 INFO L87 Difference]: Start difference. First operand 56790 states and 254836 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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) [2022-03-01 17:24:24,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:24,316 INFO L93 Difference]: Finished difference Result 58350 states and 260490 transitions. [2022-03-01 17:24:24,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:24:24,316 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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 31 [2022-03-01 17:24:24,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:24,815 INFO L225 Difference]: With dead ends: 58350 [2022-03-01 17:24:24,815 INFO L226 Difference]: Without dead ends: 58038 [2022-03-01 17:24:24,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 12 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:24:24,815 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 86 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:24,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 158 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:24:24,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58038 states. [2022-03-01 17:24:26,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58038 to 57176. [2022-03-01 17:24:26,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57176 states, 57175 states have (on average 4.48661128115435) internal successors, (256522), 57175 states have internal predecessors, (256522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:26,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57176 states to 57176 states and 256522 transitions. [2022-03-01 17:24:26,556 INFO L78 Accepts]: Start accepts. Automaton has 57176 states and 256522 transitions. Word has length 31 [2022-03-01 17:24:26,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:26,556 INFO L470 AbstractCegarLoop]: Abstraction has 57176 states and 256522 transitions. [2022-03-01 17:24:26,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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) [2022-03-01 17:24:26,556 INFO L276 IsEmpty]: Start isEmpty. Operand 57176 states and 256522 transitions. [2022-03-01 17:24:26,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:24:26,700 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:26,700 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:26,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-03-01 17:24:26,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:26,901 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:24:26,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:26,901 INFO L85 PathProgramCache]: Analyzing trace with hash -2013633551, now seen corresponding path program 21 times [2022-03-01 17:24:26,901 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:26,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167089728] [2022-03-01 17:24:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:26,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:24:26,973 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:26,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167089728] [2022-03-01 17:24:26,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167089728] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:26,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791958969] [2022-03-01 17:24:26,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:24:26,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:26,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:26,975 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) [2022-03-01 17:24:26,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-03-01 17:24:26,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-01 17:24:26,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:24:26,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:24:26,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:27,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:24:27,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791958969] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:27,871 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:27,871 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 11 [2022-03-01 17:24:27,872 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148999856] [2022-03-01 17:24:27,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:27,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 17:24:27,872 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:27,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 17:24:27,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-01 17:24:27,872 INFO L87 Difference]: Start difference. First operand 57176 states and 256522 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 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) [2022-03-01 17:24:28,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:28,991 INFO L93 Difference]: Finished difference Result 60248 states and 267546 transitions. [2022-03-01 17:24:28,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 17:24:28,992 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 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 31 [2022-03-01 17:24:28,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:29,501 INFO L225 Difference]: With dead ends: 60248 [2022-03-01 17:24:29,501 INFO L226 Difference]: Without dead ends: 59632 [2022-03-01 17:24:29,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 11 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-01 17:24:29,501 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 105 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:29,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 233 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 17:24:29,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59632 states. [2022-03-01 17:24:30,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59632 to 56602. [2022-03-01 17:24:31,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56602 states, 56601 states have (on average 4.489920672779633) internal successors, (254134), 56601 states have internal predecessors, (254134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56602 states to 56602 states and 254134 transitions. [2022-03-01 17:24:31,647 INFO L78 Accepts]: Start accepts. Automaton has 56602 states and 254134 transitions. Word has length 31 [2022-03-01 17:24:31,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:31,647 INFO L470 AbstractCegarLoop]: Abstraction has 56602 states and 254134 transitions. [2022-03-01 17:24:31,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 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) [2022-03-01 17:24:31,647 INFO L276 IsEmpty]: Start isEmpty. Operand 56602 states and 254134 transitions. [2022-03-01 17:24:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:24:31,839 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:31,839 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:31,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-03-01 17:24:32,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:32,040 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:24:32,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:32,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1818124897, now seen corresponding path program 22 times [2022-03-01 17:24:32,041 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:32,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533369130] [2022-03-01 17:24:32,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:32,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 17:24:32,112 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:32,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533369130] [2022-03-01 17:24:32,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533369130] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:32,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386251251] [2022-03-01 17:24:32,112 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:24:32,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:32,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:32,113 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) [2022-03-01 17:24:32,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-03-01 17:24:32,134 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:24:32,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:24:32,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:24:32,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:32,534 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:32,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 17:24:32,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386251251] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:32,675 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:32,675 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 9 [2022-03-01 17:24:32,675 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616713285] [2022-03-01 17:24:32,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:32,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:24:32,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:32,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:24:32,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:24:32,676 INFO L87 Difference]: Start difference. First operand 56602 states and 254134 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 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) [2022-03-01 17:24:33,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:33,631 INFO L93 Difference]: Finished difference Result 57870 states and 258758 transitions. [2022-03-01 17:24:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 17:24:33,632 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 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 31 [2022-03-01 17:24:33,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:33,914 INFO L225 Difference]: With dead ends: 57870 [2022-03-01 17:24:33,914 INFO L226 Difference]: Without dead ends: 57590 [2022-03-01 17:24:33,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 13 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:24:33,914 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 76 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:33,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 140 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:24:33,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57590 states. [2022-03-01 17:24:35,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57590 to 57018. [2022-03-01 17:24:35,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57018 states, 57017 states have (on average 4.488836662749706) internal successors, (255940), 57017 states have internal predecessors, (255940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:36,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57018 states to 57018 states and 255940 transitions. [2022-03-01 17:24:36,021 INFO L78 Accepts]: Start accepts. Automaton has 57018 states and 255940 transitions. Word has length 31 [2022-03-01 17:24:36,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:36,021 INFO L470 AbstractCegarLoop]: Abstraction has 57018 states and 255940 transitions. [2022-03-01 17:24:36,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 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) [2022-03-01 17:24:36,021 INFO L276 IsEmpty]: Start isEmpty. Operand 57018 states and 255940 transitions. [2022-03-01 17:24:36,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:24:36,197 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:36,197 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:36,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-03-01 17:24:36,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-03-01 17:24:36,398 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:24:36,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:36,398 INFO L85 PathProgramCache]: Analyzing trace with hash 275400525, now seen corresponding path program 23 times [2022-03-01 17:24:36,398 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:36,398 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810764835] [2022-03-01 17:24:36,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:36,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:24:36,476 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:36,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810764835] [2022-03-01 17:24:36,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810764835] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:36,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682642716] [2022-03-01 17:24:36,476 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:24:36,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:36,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:36,477 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) [2022-03-01 17:24:36,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-03-01 17:24:36,499 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-01 17:24:36,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:24:36,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:24:36,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:36,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:36,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:24:37,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682642716] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:37,055 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:37,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2022-03-01 17:24:37,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792662329] [2022-03-01 17:24:37,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:37,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:24:37,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:37,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:24:37,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:24:37,056 INFO L87 Difference]: Start difference. First operand 57018 states and 255940 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 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) [2022-03-01 17:24:38,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:38,210 INFO L93 Difference]: Finished difference Result 59614 states and 265266 transitions. [2022-03-01 17:24:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:24:38,210 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 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 31 [2022-03-01 17:24:38,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:38,467 INFO L225 Difference]: With dead ends: 59614 [2022-03-01 17:24:38,467 INFO L226 Difference]: Without dead ends: 59022 [2022-03-01 17:24:38,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:24:38,468 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 94 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:38,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 213 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:24:38,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59022 states. [2022-03-01 17:24:40,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59022 to 56886. [2022-03-01 17:24:40,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56886 states, 56885 states have (on average 4.493416542146436) internal successors, (255608), 56885 states have internal predecessors, (255608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:40,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56886 states to 56886 states and 255608 transitions. [2022-03-01 17:24:40,540 INFO L78 Accepts]: Start accepts. Automaton has 56886 states and 255608 transitions. Word has length 31 [2022-03-01 17:24:40,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:40,540 INFO L470 AbstractCegarLoop]: Abstraction has 56886 states and 255608 transitions. [2022-03-01 17:24:40,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 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) [2022-03-01 17:24:40,540 INFO L276 IsEmpty]: Start isEmpty. Operand 56886 states and 255608 transitions. [2022-03-01 17:24:40,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:24:40,694 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:40,694 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:40,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-03-01 17:24:40,895 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,SelfDestructingSolverStorable101 [2022-03-01 17:24:40,895 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:24:40,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:40,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1711494417, now seen corresponding path program 24 times [2022-03-01 17:24:40,895 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:40,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706117762] [2022-03-01 17:24:40,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:40,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:24:41,002 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:41,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706117762] [2022-03-01 17:24:41,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706117762] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:41,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960040003] [2022-03-01 17:24:41,003 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:24:41,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:41,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:41,004 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) [2022-03-01 17:24:41,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-03-01 17:24:41,031 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 17:24:41,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:24:41,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:24:41,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:41,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:24:41,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960040003] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:41,946 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:41,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 11 [2022-03-01 17:24:41,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152463985] [2022-03-01 17:24:41,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:41,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 17:24:41,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:41,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 17:24:41,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-03-01 17:24:41,947 INFO L87 Difference]: Start difference. First operand 56886 states and 255608 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 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) [2022-03-01 17:24:43,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:43,049 INFO L93 Difference]: Finished difference Result 59402 states and 264498 transitions. [2022-03-01 17:24:43,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 17:24:43,049 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 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 31 [2022-03-01 17:24:43,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:43,356 INFO L225 Difference]: With dead ends: 59402 [2022-03-01 17:24:43,356 INFO L226 Difference]: Without dead ends: 58902 [2022-03-01 17:24:43,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 10 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-03-01 17:24:43,357 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 94 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:43,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 245 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 17:24:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58902 states. [2022-03-01 17:24:44,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58902 to 56162. [2022-03-01 17:24:44,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56162 states, 56161 states have (on average 4.491622300172717) internal successors, (252254), 56161 states have internal predecessors, (252254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:45,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56162 states to 56162 states and 252254 transitions. [2022-03-01 17:24:45,134 INFO L78 Accepts]: Start accepts. Automaton has 56162 states and 252254 transitions. Word has length 31 [2022-03-01 17:24:45,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:45,134 INFO L470 AbstractCegarLoop]: Abstraction has 56162 states and 252254 transitions. [2022-03-01 17:24:45,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 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) [2022-03-01 17:24:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 56162 states and 252254 transitions. [2022-03-01 17:24:45,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:24:45,667 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:45,667 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:45,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-03-01 17:24:45,867 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,SelfDestructingSolverStorable102 [2022-03-01 17:24:45,867 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:24:45,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:45,868 INFO L85 PathProgramCache]: Analyzing trace with hash -844078751, now seen corresponding path program 38 times [2022-03-01 17:24:45,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:45,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410165447] [2022-03-01 17:24:45,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:45,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:24:45,936 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:45,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410165447] [2022-03-01 17:24:45,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410165447] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:45,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541148130] [2022-03-01 17:24:45,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:24:45,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:45,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:45,937 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) [2022-03-01 17:24:45,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-03-01 17:24:45,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:24:45,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:24:45,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:24:45,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:46,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:24:46,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541148130] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:46,661 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:46,661 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 10 [2022-03-01 17:24:46,662 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634275146] [2022-03-01 17:24:46,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:46,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:24:46,662 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:46,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:24:46,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:24:46,662 INFO L87 Difference]: Start difference. First operand 56162 states and 252254 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 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) [2022-03-01 17:24:47,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:47,793 INFO L93 Difference]: Finished difference Result 59091 states and 262890 transitions. [2022-03-01 17:24:47,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:24:47,794 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 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 31 [2022-03-01 17:24:47,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:48,059 INFO L225 Difference]: With dead ends: 59091 [2022-03-01 17:24:48,059 INFO L226 Difference]: Without dead ends: 58955 [2022-03-01 17:24:48,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 10 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:24:48,059 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 136 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:48,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 254 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 17:24:48,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58955 states. [2022-03-01 17:24:49,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58955 to 56590. [2022-03-01 17:24:49,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56590 states, 56589 states have (on average 4.489706480057961) internal successors, (254068), 56589 states have internal predecessors, (254068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:50,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56590 states to 56590 states and 254068 transitions. [2022-03-01 17:24:50,144 INFO L78 Accepts]: Start accepts. Automaton has 56590 states and 254068 transitions. Word has length 31 [2022-03-01 17:24:50,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:50,144 INFO L470 AbstractCegarLoop]: Abstraction has 56590 states and 254068 transitions. [2022-03-01 17:24:50,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 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) [2022-03-01 17:24:50,144 INFO L276 IsEmpty]: Start isEmpty. Operand 56590 states and 254068 transitions. [2022-03-01 17:24:50,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:24:50,290 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:50,290 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:50,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-03-01 17:24:50,491 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,SelfDestructingSolverStorable103 [2022-03-01 17:24:50,491 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:24:50,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:50,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1607875169, now seen corresponding path program 25 times [2022-03-01 17:24:50,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:50,491 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466556988] [2022-03-01 17:24:50,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:50,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:50,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:50,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466556988] [2022-03-01 17:24:50,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466556988] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:50,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225633124] [2022-03-01 17:24:50,583 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:24:50,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:50,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:50,584 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) [2022-03-01 17:24:50,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-03-01 17:24:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:50,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:24:50,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:50,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:51,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225633124] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:51,444 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:51,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 10 [2022-03-01 17:24:51,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462582131] [2022-03-01 17:24:51,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:51,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:24:51,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:51,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:24:51,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:24:51,444 INFO L87 Difference]: Start difference. First operand 56590 states and 254068 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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) [2022-03-01 17:24:52,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:52,288 INFO L93 Difference]: Finished difference Result 58466 states and 260628 transitions. [2022-03-01 17:24:52,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:24:52,288 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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 31 [2022-03-01 17:24:52,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:52,808 INFO L225 Difference]: With dead ends: 58466 [2022-03-01 17:24:52,808 INFO L226 Difference]: Without dead ends: 57978 [2022-03-01 17:24:52,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:24:52,808 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 84 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:52,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 224 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:24:52,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57978 states. [2022-03-01 17:24:54,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57978 to 57226. [2022-03-01 17:24:54,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57226 states, 57225 states have (on average 4.477483617300131) internal successors, (256224), 57225 states have internal predecessors, (256224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:54,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57226 states to 57226 states and 256224 transitions. [2022-03-01 17:24:54,653 INFO L78 Accepts]: Start accepts. Automaton has 57226 states and 256224 transitions. Word has length 31 [2022-03-01 17:24:54,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:54,653 INFO L470 AbstractCegarLoop]: Abstraction has 57226 states and 256224 transitions. [2022-03-01 17:24:54,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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) [2022-03-01 17:24:54,653 INFO L276 IsEmpty]: Start isEmpty. Operand 57226 states and 256224 transitions. [2022-03-01 17:24:54,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:24:54,811 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:54,811 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:54,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-03-01 17:24:55,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:55,011 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:24:55,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:55,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1028420631, now seen corresponding path program 26 times [2022-03-01 17:24:55,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:55,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853548697] [2022-03-01 17:24:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:55,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:55,518 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:24:55,518 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:55,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853548697] [2022-03-01 17:24:55,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853548697] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:55,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997123295] [2022-03-01 17:24:55,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:24:55,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:55,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:55,521 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) [2022-03-01 17:24:55,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-03-01 17:24:55,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:24:55,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:24:55,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:24:55,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:55,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:56,088 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:24:56,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997123295] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:56,089 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:56,089 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2022-03-01 17:24:56,089 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020776253] [2022-03-01 17:24:56,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:56,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:24:56,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:56,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:24:56,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:24:56,089 INFO L87 Difference]: Start difference. First operand 57226 states and 256224 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 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) [2022-03-01 17:24:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:57,114 INFO L93 Difference]: Finished difference Result 59296 states and 263623 transitions. [2022-03-01 17:24:57,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:24:57,114 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 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 31 [2022-03-01 17:24:57,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:57,411 INFO L225 Difference]: With dead ends: 59296 [2022-03-01 17:24:57,412 INFO L226 Difference]: Without dead ends: 58728 [2022-03-01 17:24:57,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 12 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:24:57,412 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 95 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:57,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 210 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:24:57,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58728 states. [2022-03-01 17:24:58,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58728 to 57536. [2022-03-01 17:24:58,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57536 states, 57535 states have (on average 4.477570174676284) internal successors, (257617), 57535 states have internal predecessors, (257617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57536 states to 57536 states and 257617 transitions. [2022-03-01 17:24:59,560 INFO L78 Accepts]: Start accepts. Automaton has 57536 states and 257617 transitions. Word has length 31 [2022-03-01 17:24:59,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:59,560 INFO L470 AbstractCegarLoop]: Abstraction has 57536 states and 257617 transitions. [2022-03-01 17:24:59,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 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) [2022-03-01 17:24:59,560 INFO L276 IsEmpty]: Start isEmpty. Operand 57536 states and 257617 transitions. [2022-03-01 17:25:00,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:25:00,016 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:25:00,016 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:25:00,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-03-01 17:25:00,231 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,SelfDestructingSolverStorable105 [2022-03-01 17:25:00,231 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:25:00,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:25:00,232 INFO L85 PathProgramCache]: Analyzing trace with hash -547667103, now seen corresponding path program 27 times [2022-03-01 17:25:00,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:25:00,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077916128] [2022-03-01 17:25:00,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:25:00,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:25:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:25:00,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:25:00,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077916128] [2022-03-01 17:25:00,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077916128] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:25:00,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454260712] [2022-03-01 17:25:00,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:25:00,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:00,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:25:00,361 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) [2022-03-01 17:25:00,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-03-01 17:25:00,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-01 17:25:00,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:25:00,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:25:00,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:25:00,890 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:00,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:25:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:25:01,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454260712] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:25:01,044 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:25:01,044 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 9 [2022-03-01 17:25:01,044 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515226982] [2022-03-01 17:25:01,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:25:01,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:25:01,044 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:25:01,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:25:01,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:25:01,045 INFO L87 Difference]: Start difference. First operand 57536 states and 257617 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 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) [2022-03-01 17:25:02,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:25:02,093 INFO L93 Difference]: Finished difference Result 59752 states and 266049 transitions. [2022-03-01 17:25:02,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 17:25:02,094 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 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 31 [2022-03-01 17:25:02,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:25:02,394 INFO L225 Difference]: With dead ends: 59752 [2022-03-01 17:25:02,395 INFO L226 Difference]: Without dead ends: 59408 [2022-03-01 17:25:02,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 13 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:25:02,395 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 67 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:25:02,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 151 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:25:02,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59408 states. [2022-03-01 17:25:03,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59408 to 58236. [2022-03-01 17:25:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58236 states, 58235 states have (on average 4.475744826994076) internal successors, (260645), 58235 states have internal predecessors, (260645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:04,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58236 states to 58236 states and 260645 transitions. [2022-03-01 17:25:04,527 INFO L78 Accepts]: Start accepts. Automaton has 58236 states and 260645 transitions. Word has length 31 [2022-03-01 17:25:04,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:25:04,527 INFO L470 AbstractCegarLoop]: Abstraction has 58236 states and 260645 transitions. [2022-03-01 17:25:04,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 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) [2022-03-01 17:25:04,527 INFO L276 IsEmpty]: Start isEmpty. Operand 58236 states and 260645 transitions. [2022-03-01 17:25:04,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:25:04,727 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:25:04,727 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:25:04,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-03-01 17:25:04,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:04,928 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:25:04,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:25:04,928 INFO L85 PathProgramCache]: Analyzing trace with hash -342426891, now seen corresponding path program 28 times [2022-03-01 17:25:04,929 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:25:04,929 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017257708] [2022-03-01 17:25:04,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:25:04,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:25:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:05,013 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:25:05,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017257708] [2022-03-01 17:25:05,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017257708] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:25:05,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759774600] [2022-03-01 17:25:05,013 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:25:05,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:05,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:25:05,014 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) [2022-03-01 17:25:05,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-03-01 17:25:05,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:25:05,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:25:05,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:25:05,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:25:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:05,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:25:05,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:05,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759774600] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:25:05,648 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:25:05,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2022-03-01 17:25:05,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598665336] [2022-03-01 17:25:05,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:25:05,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:25:05,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:25:05,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:25:05,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:25:05,649 INFO L87 Difference]: Start difference. First operand 58236 states and 260645 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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) [2022-03-01 17:25:06,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:25:06,821 INFO L93 Difference]: Finished difference Result 60992 states and 270781 transitions. [2022-03-01 17:25:06,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:25:06,821 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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 31 [2022-03-01 17:25:06,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:25:07,108 INFO L225 Difference]: With dead ends: 60992 [2022-03-01 17:25:07,108 INFO L226 Difference]: Without dead ends: 60500 [2022-03-01 17:25:07,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 12 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:25:07,108 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 84 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 17:25:07,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 214 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 17:25:07,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60500 states. [2022-03-01 17:25:08,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60500 to 58344. [2022-03-01 17:25:08,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58344 states, 58343 states have (on average 4.473287283821538) internal successors, (260985), 58343 states have internal predecessors, (260985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:09,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58344 states to 58344 states and 260985 transitions. [2022-03-01 17:25:09,219 INFO L78 Accepts]: Start accepts. Automaton has 58344 states and 260985 transitions. Word has length 31 [2022-03-01 17:25:09,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:25:09,220 INFO L470 AbstractCegarLoop]: Abstraction has 58344 states and 260985 transitions. [2022-03-01 17:25:09,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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) [2022-03-01 17:25:09,220 INFO L276 IsEmpty]: Start isEmpty. Operand 58344 states and 260985 transitions. [2022-03-01 17:25:09,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:25:09,375 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:25:09,375 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:25:09,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-03-01 17:25:09,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:09,576 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:25:09,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:25:09,576 INFO L85 PathProgramCache]: Analyzing trace with hash -407456723, now seen corresponding path program 29 times [2022-03-01 17:25:09,577 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:25:09,577 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523364765] [2022-03-01 17:25:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:25:09,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:25:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:25:09,653 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:25:09,653 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523364765] [2022-03-01 17:25:09,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523364765] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:25:09,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867629803] [2022-03-01 17:25:09,654 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:25:09,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:09,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:25:09,655 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) [2022-03-01 17:25:09,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-03-01 17:25:09,692 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 17:25:09,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:25:09,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:25:09,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:25:10,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:10,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:25:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:25:10,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867629803] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:25:10,478 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:25:10,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 10 [2022-03-01 17:25:10,478 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106853196] [2022-03-01 17:25:10,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:25:10,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:25:10,478 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:25:10,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:25:10,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:25:10,478 INFO L87 Difference]: Start difference. First operand 58344 states and 260985 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 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) [2022-03-01 17:25:11,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:25:11,305 INFO L93 Difference]: Finished difference Result 59652 states and 265608 transitions. [2022-03-01 17:25:11,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:25:11,306 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 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 31 [2022-03-01 17:25:11,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:25:11,849 INFO L225 Difference]: With dead ends: 59652 [2022-03-01 17:25:11,849 INFO L226 Difference]: Without dead ends: 59238 [2022-03-01 17:25:11,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 10 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:25:11,850 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 104 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:25:11,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 193 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:25:11,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59238 states. [2022-03-01 17:25:13,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59238 to 58262. [2022-03-01 17:25:13,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58262 states, 58261 states have (on average 4.478707883489813) internal successors, (260934), 58261 states have internal predecessors, (260934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:13,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58262 states to 58262 states and 260934 transitions. [2022-03-01 17:25:13,839 INFO L78 Accepts]: Start accepts. Automaton has 58262 states and 260934 transitions. Word has length 31 [2022-03-01 17:25:13,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:25:13,840 INFO L470 AbstractCegarLoop]: Abstraction has 58262 states and 260934 transitions. [2022-03-01 17:25:13,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 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) [2022-03-01 17:25:13,840 INFO L276 IsEmpty]: Start isEmpty. Operand 58262 states and 260934 transitions. [2022-03-01 17:25:14,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:25:14,485 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:25:14,485 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:25:14,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-03-01 17:25:14,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:14,686 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:25:14,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:25:14,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1478595103, now seen corresponding path program 30 times [2022-03-01 17:25:14,686 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:25:14,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010878852] [2022-03-01 17:25:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:25:14,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:25:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:25:14,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:25:14,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010878852] [2022-03-01 17:25:14,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010878852] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:25:14,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111820705] [2022-03-01 17:25:14,780 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:25:14,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:14,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:25:14,782 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) [2022-03-01 17:25:14,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-03-01 17:25:14,809 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 17:25:14,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:25:14,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:25:14,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:25:15,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:15,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:25:15,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:25:15,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111820705] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:25:15,413 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:25:15,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2022-03-01 17:25:15,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177762980] [2022-03-01 17:25:15,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:25:15,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:25:15,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:25:15,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:25:15,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:25:15,413 INFO L87 Difference]: Start difference. First operand 58262 states and 260934 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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) [2022-03-01 17:25:16,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:25:16,537 INFO L93 Difference]: Finished difference Result 61006 states and 271294 transitions. [2022-03-01 17:25:16,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:25:16,537 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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 31 [2022-03-01 17:25:16,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:25:16,825 INFO L225 Difference]: With dead ends: 61006 [2022-03-01 17:25:16,825 INFO L226 Difference]: Without dead ends: 60518 [2022-03-01 17:25:16,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 12 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:25:16,826 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 80 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:25:16,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 191 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:25:16,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60518 states. [2022-03-01 17:25:18,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60518 to 59102. [2022-03-01 17:25:18,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59102 states, 59101 states have (on average 4.474340535693136) internal successors, (264438), 59101 states have internal predecessors, (264438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:19,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59102 states to 59102 states and 264438 transitions. [2022-03-01 17:25:19,020 INFO L78 Accepts]: Start accepts. Automaton has 59102 states and 264438 transitions. Word has length 31 [2022-03-01 17:25:19,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:25:19,020 INFO L470 AbstractCegarLoop]: Abstraction has 59102 states and 264438 transitions. [2022-03-01 17:25:19,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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) [2022-03-01 17:25:19,020 INFO L276 IsEmpty]: Start isEmpty. Operand 59102 states and 264438 transitions. [2022-03-01 17:25:19,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:25:19,197 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:25:19,197 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:25:19,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-03-01 17:25:19,399 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,SelfDestructingSolverStorable109 [2022-03-01 17:25:19,399 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:25:19,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:25:19,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1513778873, now seen corresponding path program 31 times [2022-03-01 17:25:19,400 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:25:19,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649472287] [2022-03-01 17:25:19,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:25:19,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:25:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:19,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:25:19,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649472287] [2022-03-01 17:25:19,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649472287] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:25:19,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132326682] [2022-03-01 17:25:19,498 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:25:19,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:19,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:25:19,500 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) [2022-03-01 17:25:19,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-03-01 17:25:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:19,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:25:19,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:25:20,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:20,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:25:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:20,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132326682] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:25:20,267 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:25:20,267 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2022-03-01 17:25:20,267 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091696486] [2022-03-01 17:25:20,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:25:20,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:25:20,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:25:20,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:25:20,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:25:20,268 INFO L87 Difference]: Start difference. First operand 59102 states and 264438 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 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) [2022-03-01 17:25:21,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:25:21,575 INFO L93 Difference]: Finished difference Result 61926 states and 274644 transitions. [2022-03-01 17:25:21,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:25:21,576 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 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 31 [2022-03-01 17:25:21,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:25:22,134 INFO L225 Difference]: With dead ends: 61926 [2022-03-01 17:25:22,134 INFO L226 Difference]: Without dead ends: 61334 [2022-03-01 17:25:22,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 12 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:25:22,134 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 97 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:25:22,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 210 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:25:22,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61334 states. [2022-03-01 17:25:23,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61334 to 59758. [2022-03-01 17:25:23,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59758 states, 59757 states have (on average 4.472948775875629) internal successors, (267290), 59757 states have internal predecessors, (267290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:24,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59758 states to 59758 states and 267290 transitions. [2022-03-01 17:25:24,041 INFO L78 Accepts]: Start accepts. Automaton has 59758 states and 267290 transitions. Word has length 31 [2022-03-01 17:25:24,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:25:24,041 INFO L470 AbstractCegarLoop]: Abstraction has 59758 states and 267290 transitions. [2022-03-01 17:25:24,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 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) [2022-03-01 17:25:24,041 INFO L276 IsEmpty]: Start isEmpty. Operand 59758 states and 267290 transitions. [2022-03-01 17:25:24,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:25:24,679 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:25:24,679 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:25:24,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-03-01 17:25:24,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:24,895 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:25:24,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:25:24,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1611215857, now seen corresponding path program 32 times [2022-03-01 17:25:24,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:25:24,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279116896] [2022-03-01 17:25:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:25:24,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:25:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:24,990 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:25:24,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279116896] [2022-03-01 17:25:24,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279116896] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:25:24,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282413457] [2022-03-01 17:25:24,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:25:24,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:24,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:25:24,991 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) [2022-03-01 17:25:25,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-03-01 17:25:25,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:25:25,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:25:25,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:25:25,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:25:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:25,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:25:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:25,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282413457] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:25:25,630 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:25:25,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2022-03-01 17:25:25,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848177104] [2022-03-01 17:25:25,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:25:25,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:25:25,630 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:25:25,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:25:25,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:25:25,630 INFO L87 Difference]: Start difference. First operand 59758 states and 267290 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 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) [2022-03-01 17:25:26,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:25:26,810 INFO L93 Difference]: Finished difference Result 61736 states and 274450 transitions. [2022-03-01 17:25:26,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:25:26,810 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 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 31 [2022-03-01 17:25:26,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:25:27,083 INFO L225 Difference]: With dead ends: 61736 [2022-03-01 17:25:27,083 INFO L226 Difference]: Without dead ends: 61198 [2022-03-01 17:25:27,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 10 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:25:27,084 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 96 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 17:25:27,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 226 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 17:25:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61198 states. [2022-03-01 17:25:28,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61198 to 59694. [2022-03-01 17:25:28,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59694 states, 59693 states have (on average 4.476203239910878) internal successors, (267198), 59693 states have internal predecessors, (267198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59694 states to 59694 states and 267198 transitions. [2022-03-01 17:25:29,260 INFO L78 Accepts]: Start accepts. Automaton has 59694 states and 267198 transitions. Word has length 31 [2022-03-01 17:25:29,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:25:29,260 INFO L470 AbstractCegarLoop]: Abstraction has 59694 states and 267198 transitions. [2022-03-01 17:25:29,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 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) [2022-03-01 17:25:29,260 INFO L276 IsEmpty]: Start isEmpty. Operand 59694 states and 267198 transitions. [2022-03-01 17:25:29,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:25:29,426 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:25:29,426 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:25:29,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-03-01 17:25:29,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:29,626 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:25:29,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:25:29,627 INFO L85 PathProgramCache]: Analyzing trace with hash -748846751, now seen corresponding path program 33 times [2022-03-01 17:25:29,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:25:29,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777456143] [2022-03-01 17:25:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:25:29,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:25:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:29,714 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:25:29,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:25:29,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777456143] [2022-03-01 17:25:29,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777456143] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:25:29,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3873840] [2022-03-01 17:25:29,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:25:29,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:29,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:25:29,715 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) [2022-03-01 17:25:29,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-03-01 17:25:29,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 17:25:29,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:25:29,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:25:29,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:25:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:30,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:25:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:25:30,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3873840] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:25:30,575 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:25:30,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 8 [2022-03-01 17:25:30,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268380432] [2022-03-01 17:25:30,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:25:30,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-01 17:25:30,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:25:30,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-01 17:25:30,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-01 17:25:30,575 INFO L87 Difference]: Start difference. First operand 59694 states and 267198 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 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) [2022-03-01 17:25:31,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:25:31,285 INFO L93 Difference]: Finished difference Result 60634 states and 270764 transitions. [2022-03-01 17:25:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 17:25:31,285 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 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 31 [2022-03-01 17:25:31,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:25:31,842 INFO L225 Difference]: With dead ends: 60634 [2022-03-01 17:25:31,842 INFO L226 Difference]: Without dead ends: 60486 [2022-03-01 17:25:31,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 12 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-01 17:25:31,843 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 57 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:25:31,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 125 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:25:31,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60486 states. [2022-03-01 17:25:33,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60486 to 60106. [2022-03-01 17:25:33,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60106 states, 60105 states have (on average 4.475667581731969) internal successors, (269010), 60105 states have internal predecessors, (269010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:34,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60106 states to 60106 states and 269010 transitions. [2022-03-01 17:25:34,140 INFO L78 Accepts]: Start accepts. Automaton has 60106 states and 269010 transitions. Word has length 31 [2022-03-01 17:25:34,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:25:34,140 INFO L470 AbstractCegarLoop]: Abstraction has 60106 states and 269010 transitions. [2022-03-01 17:25:34,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 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) [2022-03-01 17:25:34,140 INFO L276 IsEmpty]: Start isEmpty. Operand 60106 states and 269010 transitions. [2022-03-01 17:25:34,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:25:34,366 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:25:34,366 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:25:34,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-03-01 17:25:34,579 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,SelfDestructingSolverStorable112 [2022-03-01 17:25:34,579 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:25:34,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:25:34,580 INFO L85 PathProgramCache]: Analyzing trace with hash -543606539, now seen corresponding path program 34 times [2022-03-01 17:25:34,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:25:34,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959019267] [2022-03-01 17:25:34,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:25:34,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:25:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:34,714 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:34,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:25:34,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959019267] [2022-03-01 17:25:34,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959019267] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:25:34,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520409988] [2022-03-01 17:25:34,714 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:25:34,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:34,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:25:34,716 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) [2022-03-01 17:25:34,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-03-01 17:25:34,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:25:34,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:25:34,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:25:34,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:25:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:35,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:25:35,588 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:35,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520409988] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:25:35,588 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:25:35,588 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 9 [2022-03-01 17:25:35,588 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528902868] [2022-03-01 17:25:35,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:25:35,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:25:35,589 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:25:35,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:25:35,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:25:35,589 INFO L87 Difference]: Start difference. First operand 60106 states and 269010 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 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) [2022-03-01 17:25:36,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:25:36,556 INFO L93 Difference]: Finished difference Result 61878 states and 275610 transitions. [2022-03-01 17:25:36,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 17:25:36,556 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 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 31 [2022-03-01 17:25:36,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:25:36,861 INFO L225 Difference]: With dead ends: 61878 [2022-03-01 17:25:36,861 INFO L226 Difference]: Without dead ends: 61434 [2022-03-01 17:25:36,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 11 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:25:36,861 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 74 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:25:36,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 133 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:25:36,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61434 states. [2022-03-01 17:25:38,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61434 to 60270. [2022-03-01 17:25:38,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60270 states, 60269 states have (on average 4.47284673712854) internal successors, (269574), 60269 states have internal predecessors, (269574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:39,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60270 states to 60270 states and 269574 transitions. [2022-03-01 17:25:39,086 INFO L78 Accepts]: Start accepts. Automaton has 60270 states and 269574 transitions. Word has length 31 [2022-03-01 17:25:39,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:25:39,086 INFO L470 AbstractCegarLoop]: Abstraction has 60270 states and 269574 transitions. [2022-03-01 17:25:39,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 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) [2022-03-01 17:25:39,086 INFO L276 IsEmpty]: Start isEmpty. Operand 60270 states and 269574 transitions. [2022-03-01 17:25:39,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:25:39,290 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:25:39,290 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:25:39,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-03-01 17:25:39,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-03-01 17:25:39,491 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:25:39,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:25:39,491 INFO L85 PathProgramCache]: Analyzing trace with hash -772548551, now seen corresponding path program 35 times [2022-03-01 17:25:39,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:25:39,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530201894] [2022-03-01 17:25:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:25:39,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:25:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:39,575 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:25:39,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530201894] [2022-03-01 17:25:39,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530201894] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:25:39,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398612410] [2022-03-01 17:25:39,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:25:39,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:39,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:25:39,577 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) [2022-03-01 17:25:39,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-03-01 17:25:39,603 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 17:25:39,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:25:39,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:25:39,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:25:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:39,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:25:40,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:40,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398612410] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:25:40,146 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:25:40,146 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 10 [2022-03-01 17:25:40,146 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386557180] [2022-03-01 17:25:40,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:25:40,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:25:40,147 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:25:40,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:25:40,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:25:40,147 INFO L87 Difference]: Start difference. First operand 60270 states and 269574 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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) [2022-03-01 17:25:41,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:25:41,322 INFO L93 Difference]: Finished difference Result 62022 states and 275690 transitions. [2022-03-01 17:25:41,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:25:41,323 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 31 [2022-03-01 17:25:41,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:25:41,603 INFO L225 Difference]: With dead ends: 62022 [2022-03-01 17:25:41,603 INFO L226 Difference]: Without dead ends: 61470 [2022-03-01 17:25:41,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:25:41,603 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 92 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 17:25:41,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 226 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 17:25:41,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61470 states. [2022-03-01 17:25:43,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61470 to 59542. [2022-03-01 17:25:43,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59542 states, 59541 states have (on average 4.473589627315631) internal successors, (266362), 59541 states have internal predecessors, (266362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:43,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59542 states to 59542 states and 266362 transitions. [2022-03-01 17:25:43,714 INFO L78 Accepts]: Start accepts. Automaton has 59542 states and 266362 transitions. Word has length 31 [2022-03-01 17:25:43,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:25:43,714 INFO L470 AbstractCegarLoop]: Abstraction has 59542 states and 266362 transitions. [2022-03-01 17:25:43,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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) [2022-03-01 17:25:43,714 INFO L276 IsEmpty]: Start isEmpty. Operand 59542 states and 266362 transitions. [2022-03-01 17:25:43,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:25:43,871 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:25:43,871 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:25:43,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-03-01 17:25:44,071 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,SelfDestructingSolverStorable114 [2022-03-01 17:25:44,071 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:25:44,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:25:44,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1635941737, now seen corresponding path program 36 times [2022-03-01 17:25:44,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:25:44,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606846934] [2022-03-01 17:25:44,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:25:44,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:25:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:44,534 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:44,535 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:25:44,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606846934] [2022-03-01 17:25:44,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606846934] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:25:44,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224156480] [2022-03-01 17:25:44,535 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:25:44,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:44,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:25:44,536 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) [2022-03-01 17:25:44,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-03-01 17:25:44,569 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 17:25:44,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:25:44,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:25:44,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:25:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:44,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:25:45,021 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:45,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224156480] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:25:45,021 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:25:45,021 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 8 [2022-03-01 17:25:45,021 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386397301] [2022-03-01 17:25:45,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:25:45,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-01 17:25:45,022 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:25:45,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-01 17:25:45,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-01 17:25:45,022 INFO L87 Difference]: Start difference. First operand 59542 states and 266362 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 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) [2022-03-01 17:25:45,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:25:45,932 INFO L93 Difference]: Finished difference Result 60802 states and 270854 transitions. [2022-03-01 17:25:45,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 17:25:45,932 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 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 31 [2022-03-01 17:25:45,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:25:46,241 INFO L225 Difference]: With dead ends: 60802 [2022-03-01 17:25:46,241 INFO L226 Difference]: Without dead ends: 60606 [2022-03-01 17:25:46,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 13 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-01 17:25:46,241 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 58 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:25:46,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 141 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:25:46,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60606 states. [2022-03-01 17:25:47,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60606 to 59794. [2022-03-01 17:25:47,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59794 states, 59793 states have (on average 4.473332998846018) internal successors, (267474), 59793 states have internal predecessors, (267474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:48,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59794 states to 59794 states and 267474 transitions. [2022-03-01 17:25:48,401 INFO L78 Accepts]: Start accepts. Automaton has 59794 states and 267474 transitions. Word has length 31 [2022-03-01 17:25:48,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:25:48,401 INFO L470 AbstractCegarLoop]: Abstraction has 59794 states and 267474 transitions. [2022-03-01 17:25:48,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 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) [2022-03-01 17:25:48,401 INFO L276 IsEmpty]: Start isEmpty. Operand 59794 states and 267474 transitions. [2022-03-01 17:25:48,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:25:48,604 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:25:48,605 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:25:48,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-03-01 17:25:48,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:48,807 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:25:48,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:25:48,808 INFO L85 PathProgramCache]: Analyzing trace with hash -690109279, now seen corresponding path program 37 times [2022-03-01 17:25:48,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:25:48,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380466362] [2022-03-01 17:25:48,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:25:48,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:25:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:48,898 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:48,898 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:25:48,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380466362] [2022-03-01 17:25:48,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380466362] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:25:48,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181297578] [2022-03-01 17:25:48,899 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:25:48,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:48,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:25:48,900 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) [2022-03-01 17:25:48,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-03-01 17:25:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:48,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:25:48,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:25:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:49,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:25:49,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:49,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181297578] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:25:49,374 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:25:49,374 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 9 [2022-03-01 17:25:49,374 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956381406] [2022-03-01 17:25:49,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:25:49,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:25:49,375 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:25:49,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:25:49,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:25:49,375 INFO L87 Difference]: Start difference. First operand 59794 states and 267474 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 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) [2022-03-01 17:25:50,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:25:50,469 INFO L93 Difference]: Finished difference Result 62098 states and 276004 transitions. [2022-03-01 17:25:50,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 17:25:50,470 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 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 31 [2022-03-01 17:25:50,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:25:50,788 INFO L225 Difference]: With dead ends: 62098 [2022-03-01 17:25:50,788 INFO L226 Difference]: Without dead ends: 61754 [2022-03-01 17:25:50,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 12 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:25:50,788 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 65 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:25:50,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 174 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:25:50,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61754 states. [2022-03-01 17:25:52,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61754 to 60254. [2022-03-01 17:25:52,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60254 states, 60253 states have (on average 4.470150863857401) internal successors, (269340), 60253 states have internal predecessors, (269340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:52,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60254 states to 60254 states and 269340 transitions. [2022-03-01 17:25:52,996 INFO L78 Accepts]: Start accepts. Automaton has 60254 states and 269340 transitions. Word has length 31 [2022-03-01 17:25:52,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:25:52,996 INFO L470 AbstractCegarLoop]: Abstraction has 60254 states and 269340 transitions. [2022-03-01 17:25:52,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 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) [2022-03-01 17:25:52,996 INFO L276 IsEmpty]: Start isEmpty. Operand 60254 states and 269340 transitions. [2022-03-01 17:25:53,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:25:53,167 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:25:53,167 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:25:53,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-03-01 17:25:53,371 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,SelfDestructingSolverStorable116 [2022-03-01 17:25:53,371 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:25:53,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:25:53,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1651042397, now seen corresponding path program 38 times [2022-03-01 17:25:53,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:25:53,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040220578] [2022-03-01 17:25:53,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:25:53,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:25:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:53,471 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:25:53,472 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:25:53,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040220578] [2022-03-01 17:25:53,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040220578] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:25:53,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178229355] [2022-03-01 17:25:53,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:25:53,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:53,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:25:53,473 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) [2022-03-01 17:25:53,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-03-01 17:25:53,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:25:53,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:25:53,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:25:53,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:25:53,820 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:53,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:25:53,974 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:25:53,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178229355] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:25:53,975 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:25:53,975 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 10 [2022-03-01 17:25:53,975 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000798570] [2022-03-01 17:25:53,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:25:53,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:25:53,975 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:25:53,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:25:53,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:25:53,975 INFO L87 Difference]: Start difference. First operand 60254 states and 269340 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 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) [2022-03-01 17:25:55,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:25:55,102 INFO L93 Difference]: Finished difference Result 62498 states and 277194 transitions. [2022-03-01 17:25:55,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:25:55,103 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 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 31 [2022-03-01 17:25:55,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:25:55,630 INFO L225 Difference]: With dead ends: 62498 [2022-03-01 17:25:55,630 INFO L226 Difference]: Without dead ends: 62042 [2022-03-01 17:25:55,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:25:55,630 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 75 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:25:55,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 196 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:25:55,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62042 states. [2022-03-01 17:25:57,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62042 to 60106. [2022-03-01 17:25:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60106 states, 60105 states have (on average 4.462690291989019) internal successors, (268230), 60105 states have internal predecessors, (268230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:57,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60106 states to 60106 states and 268230 transitions. [2022-03-01 17:25:57,512 INFO L78 Accepts]: Start accepts. Automaton has 60106 states and 268230 transitions. Word has length 31 [2022-03-01 17:25:57,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:25:57,513 INFO L470 AbstractCegarLoop]: Abstraction has 60106 states and 268230 transitions. [2022-03-01 17:25:57,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 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) [2022-03-01 17:25:57,513 INFO L276 IsEmpty]: Start isEmpty. Operand 60106 states and 268230 transitions. [2022-03-01 17:25:58,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:25:58,106 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:25:58,107 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:25:58,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-03-01 17:25:58,329 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,SelfDestructingSolverStorable117 [2022-03-01 17:25:58,330 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:25:58,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:25:58,330 INFO L85 PathProgramCache]: Analyzing trace with hash -705882519, now seen corresponding path program 39 times [2022-03-01 17:25:58,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:25:58,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315697518] [2022-03-01 17:25:58,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:25:58,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:25:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:58,430 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:25:58,430 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:25:58,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315697518] [2022-03-01 17:25:58,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315697518] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:25:58,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003087658] [2022-03-01 17:25:58,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:25:58,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:58,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:25:58,432 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) [2022-03-01 17:25:58,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-03-01 17:25:58,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:25:58,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:25:58,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:25:58,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:25:58,903 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:58,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:25:59,072 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:25:59,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003087658] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:25:59,073 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:25:59,073 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 11 [2022-03-01 17:25:59,073 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67636741] [2022-03-01 17:25:59,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:25:59,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 17:25:59,073 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:25:59,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 17:25:59,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-03-01 17:25:59,074 INFO L87 Difference]: Start difference. First operand 60106 states and 268230 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 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) [2022-03-01 17:26:00,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:26:00,182 INFO L93 Difference]: Finished difference Result 63006 states and 278934 transitions. [2022-03-01 17:26:00,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 17:26:00,182 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 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 31 [2022-03-01 17:26:00,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:26:00,470 INFO L225 Difference]: With dead ends: 63006 [2022-03-01 17:26:00,470 INFO L226 Difference]: Without dead ends: 62418 [2022-03-01 17:26:00,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 10 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-03-01 17:26:00,471 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 96 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:26:00,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 220 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:26:00,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62418 states. [2022-03-01 17:26:01,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62418 to 57842. [2022-03-01 17:26:02,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57842 states, 57841 states have (on average 4.465794159852008) internal successors, (258306), 57841 states have internal predecessors, (258306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:26:02,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57842 states to 57842 states and 258306 transitions. [2022-03-01 17:26:02,703 INFO L78 Accepts]: Start accepts. Automaton has 57842 states and 258306 transitions. Word has length 31 [2022-03-01 17:26:02,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:26:02,703 INFO L470 AbstractCegarLoop]: Abstraction has 57842 states and 258306 transitions. [2022-03-01 17:26:02,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 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) [2022-03-01 17:26:02,703 INFO L276 IsEmpty]: Start isEmpty. Operand 57842 states and 258306 transitions. [2022-03-01 17:26:02,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:26:02,875 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:26:02,875 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:26:02,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-03-01 17:26:03,075 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,SelfDestructingSolverStorable118 [2022-03-01 17:26:03,075 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:26:03,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:26:03,076 INFO L85 PathProgramCache]: Analyzing trace with hash -570103327, now seen corresponding path program 40 times [2022-03-01 17:26:03,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:26:03,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060605833] [2022-03-01 17:26:03,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:26:03,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:26:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:26:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:26:03,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:26:03,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060605833] [2022-03-01 17:26:03,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060605833] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:26:03,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964438447] [2022-03-01 17:26:03,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:26:03,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:26:03,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:26:03,166 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) [2022-03-01 17:26:03,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-03-01 17:26:03,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:26:03,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:26:03,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:26:03,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:26:03,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:26:03,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:26:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:26:03,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964438447] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:26:03,799 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:26:03,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 9 [2022-03-01 17:26:03,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448114551] [2022-03-01 17:26:03,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:26:03,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:26:03,800 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:26:03,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:26:03,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:26:03,800 INFO L87 Difference]: Start difference. First operand 57842 states and 258306 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 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) [2022-03-01 17:26:04,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:26:04,886 INFO L93 Difference]: Finished difference Result 59524 states and 264220 transitions. [2022-03-01 17:26:04,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 17:26:04,887 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 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 31 [2022-03-01 17:26:04,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:26:05,385 INFO L225 Difference]: With dead ends: 59524 [2022-03-01 17:26:05,386 INFO L226 Difference]: Without dead ends: 59226 [2022-03-01 17:26:05,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 13 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:26:05,386 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 76 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:26:05,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 169 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:26:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59226 states. [2022-03-01 17:26:06,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59226 to 58158. [2022-03-01 17:26:06,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58158 states, 58157 states have (on average 4.4656017332393345) internal successors, (259706), 58157 states have internal predecessors, (259706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:26:07,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58158 states to 58158 states and 259706 transitions. [2022-03-01 17:26:07,200 INFO L78 Accepts]: Start accepts. Automaton has 58158 states and 259706 transitions. Word has length 31 [2022-03-01 17:26:07,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:26:07,200 INFO L470 AbstractCegarLoop]: Abstraction has 58158 states and 259706 transitions. [2022-03-01 17:26:07,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 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) [2022-03-01 17:26:07,200 INFO L276 IsEmpty]: Start isEmpty. Operand 58158 states and 259706 transitions. [2022-03-01 17:26:07,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:26:07,355 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:26:07,355 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:26:07,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-03-01 17:26:07,556 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,SelfDestructingSolverStorable119 [2022-03-01 17:26:07,556 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-01 17:26:07,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:26:07,556 INFO L85 PathProgramCache]: Analyzing trace with hash -953567319, now seen corresponding path program 41 times [2022-03-01 17:26:07,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:26:07,557 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967653457] [2022-03-01 17:26:07,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:26:07,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:26:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:26:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 17:26:07,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:26:07,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967653457] [2022-03-01 17:26:07,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967653457] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:26:07,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780100883] [2022-03-01 17:26:07,636 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:26:07,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:26:07,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:26:07,638 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) [2022-03-01 17:26:07,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-03-01 17:26:07,660 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 17:26:07,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:26:07,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:26:07,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:26:08,440 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:26:08,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:26:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 17:26:08,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780100883] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:26:08,586 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:26:08,586 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2022-03-01 17:26:08,586 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131186410] [2022-03-01 17:26:08,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:26:08,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:26:08,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:26:08,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:26:08,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:26:08,587 INFO L87 Difference]: Start difference. First operand 58158 states and 259706 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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) [2022-03-01 17:26:09,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:26:09,682 INFO L93 Difference]: Finished difference Result 60678 states and 268598 transitions. [2022-03-01 17:26:09,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:26:09,682 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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 31 [2022-03-01 17:26:09,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:26:09,976 INFO L225 Difference]: With dead ends: 60678 [2022-03-01 17:26:09,976 INFO L226 Difference]: Without dead ends: 60134 [2022-03-01 17:26:09,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:26:09,977 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 91 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 17:26:09,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 234 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 17:26:10,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60134 states.