/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/popl20-bad/counter-queue.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-11 01:09:24,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-11 01:09:24,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-11 01:09:24,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-11 01:09:24,653 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 [2022-02-11 01:09:24,681 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-11 01:09:24,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-11 01:09:24,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-11 01:09:24,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-11 01:09:24,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-11 01:09:24,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-11 01:09:24,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-11 01:09:24,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-11 01:09:24,683 INFO L138 SettingsManager]: * Use SBE=true [2022-02-11 01:09:24,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-11 01:09:24,684 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-11 01:09:24,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-11 01:09:24,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-11 01:09:24,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-11 01:09:24,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-11 01:09:24,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-11 01:09:24,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-11 01:09:24,684 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-11 01:09:24,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-11 01:09:24,684 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-11 01:09:24,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-11 01:09:24,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-11 01:09:24,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-11 01:09:24,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-11 01:09:24,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-11 01:09:24,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 01:09:24,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-11 01:09:24,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-11 01:09:24,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-11 01:09:24,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-11 01:09:24,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-11 01:09:24,685 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-11 01:09:24,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-11 01:09:24,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-11 01:09:24,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-11 01:09:24,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-11 01:09:24,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-11 01:09:24,874 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-11 01:09:24,891 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-11 01:09:24,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/counter-queue.wvr.bpl [2022-02-11 01:09:24,892 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/counter-queue.wvr.bpl' [2022-02-11 01:09:24,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-11 01:09:24,915 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-11 01:09:24,916 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-11 01:09:24,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-11 01:09:24,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-11 01:09:24,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "counter-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:09:24" (1/1) ... [2022-02-11 01:09:24,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "counter-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:09:24" (1/1) ... [2022-02-11 01:09:24,934 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-11 01:09:24,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-11 01:09:24,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-11 01:09:24,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-11 01:09:24,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-11 01:09:24,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "counter-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:09:24" (1/1) ... [2022-02-11 01:09:24,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "counter-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:09:24" (1/1) ... [2022-02-11 01:09:24,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "counter-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:09:24" (1/1) ... [2022-02-11 01:09:24,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "counter-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:09:24" (1/1) ... [2022-02-11 01:09:24,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "counter-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:09:24" (1/1) ... [2022-02-11 01:09:24,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "counter-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:09:24" (1/1) ... [2022-02-11 01:09:24,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "counter-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:09:24" (1/1) ... [2022-02-11 01:09:24,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-11 01:09:24,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-11 01:09:24,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-11 01:09:24,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-11 01:09:24,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "counter-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:09:24" (1/1) ... [2022-02-11 01:09:24,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 01:09:24,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:24,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-11 01:09:24,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-11 01:09:24,998 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-11 01:09:24,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-11 01:09:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-11 01:09:24,998 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-11 01:09:24,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-11 01:09:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-11 01:09:24,998 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-11 01:09:24,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-11 01:09:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-11 01:09:24,999 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-11 01:09:25,030 INFO L234 CfgBuilder]: Building ICFG [2022-02-11 01:09:25,031 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-11 01:09:25,084 INFO L275 CfgBuilder]: Performing block encoding [2022-02-11 01:09:25,094 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-11 01:09:25,094 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-11 01:09:25,096 INFO L202 PluginConnector]: Adding new model counter-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 01:09:25 BoogieIcfgContainer [2022-02-11 01:09:25,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-11 01:09:25,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-11 01:09:25,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-11 01:09:25,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-11 01:09:25,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "counter-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:09:24" (1/2) ... [2022-02-11 01:09:25,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eb4dab6 and model type counter-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.02 01:09:25, skipping insertion in model container [2022-02-11 01:09:25,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "counter-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 01:09:25" (2/2) ... [2022-02-11 01:09:25,117 INFO L112 eAbstractionObserver]: Analyzing ICFG counter-queue.wvr.bpl [2022-02-11 01:09:25,121 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-11 01:09:25,121 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-11 01:09:25,121 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-11 01:09:25,121 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-11 01:09:25,147 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-11 01:09:25,177 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-11 01:09:25,182 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, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-11 01:09:25,182 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-11 01:09:25,188 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 22 transitions, 60 flow [2022-02-11 01:09:25,198 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 32 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:25,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:25,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-11 01:09:25,204 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:25,205 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:25,205 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:25,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:25,209 INFO L85 PathProgramCache]: Analyzing trace with hash 160243872, now seen corresponding path program 1 times [2022-02-11 01:09:25,214 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:25,214 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732142495] [2022-02-11 01:09:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:25,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:25,304 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:25,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732142495] [2022-02-11 01:09:25,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732142495] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 01:09:25,305 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 01:09:25,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 01:09:25,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807556574] [2022-02-11 01:09:25,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 01:09:25,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-11 01:09:25,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:25,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-11 01:09:25,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 01:09:25,348 INFO L87 Difference]: Start difference. First operand has 32 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:25,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:25,397 INFO L93 Difference]: Finished difference Result 57 states and 105 transitions. [2022-02-11 01:09:25,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-11 01:09:25,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-11 01:09:25,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:25,408 INFO L225 Difference]: With dead ends: 57 [2022-02-11 01:09:25,408 INFO L226 Difference]: Without dead ends: 50 [2022-02-11 01:09:25,409 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 01:09:25,413 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:25,413 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 01:09:25,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-02-11 01:09:25,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2022-02-11 01:09:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.85) internal successors, (74), 40 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:25,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 74 transitions. [2022-02-11 01:09:25,450 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 74 transitions. Word has length 14 [2022-02-11 01:09:25,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:25,450 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 74 transitions. [2022-02-11 01:09:25,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:25,450 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 74 transitions. [2022-02-11 01:09:25,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-11 01:09:25,451 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:25,451 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:25,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-11 01:09:25,451 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:25,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:25,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2122570142, now seen corresponding path program 1 times [2022-02-11 01:09:25,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:25,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360645709] [2022-02-11 01:09:25,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:25,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:25,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:25,573 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:25,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360645709] [2022-02-11 01:09:25,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360645709] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:25,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113678456] [2022-02-11 01:09:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:25,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:25,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:25,576 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:25,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-11 01:09:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:25,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 01:09:25,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:25,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:25,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113678456] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:25,822 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-11 01:09:25,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2022-02-11 01:09:25,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123121628] [2022-02-11 01:09:25,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 01:09:25,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 01:09:25,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:25,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 01:09:25,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-02-11 01:09:25,825 INFO L87 Difference]: Start difference. First operand 41 states and 74 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:25,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:25,923 INFO L93 Difference]: Finished difference Result 76 states and 130 transitions. [2022-02-11 01:09:25,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 01:09:25,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-11 01:09:25,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:25,927 INFO L225 Difference]: With dead ends: 76 [2022-02-11 01:09:25,927 INFO L226 Difference]: Without dead ends: 76 [2022-02-11 01:09:25,928 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-02-11 01:09:25,929 INFO L934 BasicCegarLoop]: 14 mSDtfsCounter, 56 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:25,929 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 33 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 01:09:25,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-02-11 01:09:25,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 41. [2022-02-11 01:09:25,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.9) internal successors, (76), 40 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:25,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 76 transitions. [2022-02-11 01:09:25,936 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 76 transitions. Word has length 16 [2022-02-11 01:09:25,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:25,936 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 76 transitions. [2022-02-11 01:09:25,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:25,936 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 76 transitions. [2022-02-11 01:09:25,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-11 01:09:25,937 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:25,937 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:25,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-11 01:09:26,137 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 [2022-02-11 01:09:26,138 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:26,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:26,139 INFO L85 PathProgramCache]: Analyzing trace with hash 834689058, now seen corresponding path program 1 times [2022-02-11 01:09:26,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:26,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665115301] [2022-02-11 01:09:26,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:26,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:26,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:26,173 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:26,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665115301] [2022-02-11 01:09:26,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665115301] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 01:09:26,174 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 01:09:26,174 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-11 01:09:26,174 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463209634] [2022-02-11 01:09:26,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 01:09:26,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 01:09:26,174 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:26,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 01:09:26,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-11 01:09:26,175 INFO L87 Difference]: Start difference. First operand 41 states and 76 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:26,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:26,248 INFO L93 Difference]: Finished difference Result 71 states and 125 transitions. [2022-02-11 01:09:26,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 01:09:26,248 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-11 01:09:26,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:26,250 INFO L225 Difference]: With dead ends: 71 [2022-02-11 01:09:26,250 INFO L226 Difference]: Without dead ends: 66 [2022-02-11 01:09:26,250 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-02-11 01:09:26,251 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 41 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:26,252 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 31 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 01:09:26,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-02-11 01:09:26,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 49. [2022-02-11 01:09:26,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:26,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 91 transitions. [2022-02-11 01:09:26,262 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 91 transitions. Word has length 16 [2022-02-11 01:09:26,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:26,262 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 91 transitions. [2022-02-11 01:09:26,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:26,263 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 91 transitions. [2022-02-11 01:09:26,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-11 01:09:26,263 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:26,263 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:26,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-11 01:09:26,264 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:26,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:26,264 INFO L85 PathProgramCache]: Analyzing trace with hash -999603742, now seen corresponding path program 2 times [2022-02-11 01:09:26,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:26,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606301961] [2022-02-11 01:09:26,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:26,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:26,304 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:26,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606301961] [2022-02-11 01:09:26,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606301961] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 01:09:26,304 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 01:09:26,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-11 01:09:26,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596660394] [2022-02-11 01:09:26,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 01:09:26,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 01:09:26,306 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:26,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 01:09:26,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-11 01:09:26,307 INFO L87 Difference]: Start difference. First operand 49 states and 91 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:26,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:26,371 INFO L93 Difference]: Finished difference Result 51 states and 94 transitions. [2022-02-11 01:09:26,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 01:09:26,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-11 01:09:26,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:26,373 INFO L225 Difference]: With dead ends: 51 [2022-02-11 01:09:26,373 INFO L226 Difference]: Without dead ends: 51 [2022-02-11 01:09:26,376 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-02-11 01:09:26,387 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:26,388 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 32 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 01:09:26,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-02-11 01:09:26,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2022-02-11 01:09:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.880952380952381) internal successors, (79), 42 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:26,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 79 transitions. [2022-02-11 01:09:26,392 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 79 transitions. Word has length 16 [2022-02-11 01:09:26,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:26,392 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 79 transitions. [2022-02-11 01:09:26,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:26,392 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 79 transitions. [2022-02-11 01:09:26,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-11 01:09:26,393 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:26,393 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:26,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-11 01:09:26,393 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:26,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:26,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1331282530, now seen corresponding path program 2 times [2022-02-11 01:09:26,394 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:26,394 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507608465] [2022-02-11 01:09:26,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:26,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:26,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:26,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507608465] [2022-02-11 01:09:26,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507608465] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 01:09:26,448 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 01:09:26,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-11 01:09:26,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384598022] [2022-02-11 01:09:26,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 01:09:26,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 01:09:26,450 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:26,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 01:09:26,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-11 01:09:26,451 INFO L87 Difference]: Start difference. First operand 43 states and 79 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:26,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:26,503 INFO L93 Difference]: Finished difference Result 51 states and 92 transitions. [2022-02-11 01:09:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 01:09:26,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-11 01:09:26,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:26,504 INFO L225 Difference]: With dead ends: 51 [2022-02-11 01:09:26,504 INFO L226 Difference]: Without dead ends: 49 [2022-02-11 01:09:26,504 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-02-11 01:09:26,505 INFO L934 BasicCegarLoop]: 9 mSDtfsCounter, 53 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:26,505 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 19 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 01:09:26,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-02-11 01:09:26,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2022-02-11 01:09:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 42 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:26,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 78 transitions. [2022-02-11 01:09:26,508 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 78 transitions. Word has length 16 [2022-02-11 01:09:26,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:26,508 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 78 transitions. [2022-02-11 01:09:26,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:26,508 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 78 transitions. [2022-02-11 01:09:26,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 01:09:26,509 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:26,509 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:26,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-11 01:09:26,509 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:26,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:26,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1139591584, now seen corresponding path program 1 times [2022-02-11 01:09:26,510 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:26,510 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779890983] [2022-02-11 01:09:26,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:26,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:26,618 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:26,618 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779890983] [2022-02-11 01:09:26,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779890983] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:26,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379924837] [2022-02-11 01:09:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:26,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:26,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:26,624 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:26,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-11 01:09:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:26,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:09:26,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:26,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:26,896 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-02-11 01:09:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:26,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:26,982 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:09:26,982 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2022-02-11 01:09:26,999 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-02-11 01:09:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:27,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379924837] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:27,040 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:27,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2022-02-11 01:09:27,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736322414] [2022-02-11 01:09:27,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:27,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-11 01:09:27,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:27,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-11 01:09:27,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-11 01:09:27,041 INFO L87 Difference]: Start difference. First operand 43 states and 78 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:27,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:27,077 INFO L93 Difference]: Finished difference Result 84 states and 161 transitions. [2022-02-11 01:09:27,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 01:09:27,078 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 01:09:27,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:27,078 INFO L225 Difference]: With dead ends: 84 [2022-02-11 01:09:27,078 INFO L226 Difference]: Without dead ends: 77 [2022-02-11 01:09:27,079 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 7 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-11 01:09:27,079 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:27,079 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 55 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time] [2022-02-11 01:09:27,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-02-11 01:09:27,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57. [2022-02-11 01:09:27,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.9642857142857142) internal successors, (110), 56 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:27,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 110 transitions. [2022-02-11 01:09:27,083 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 110 transitions. Word has length 18 [2022-02-11 01:09:27,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:27,083 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 110 transitions. [2022-02-11 01:09:27,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:27,083 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 110 transitions. [2022-02-11 01:09:27,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 01:09:27,083 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:27,083 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:27,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:27,303 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,SelfDestructingSolverStorable5 [2022-02-11 01:09:27,304 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:27,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:27,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2098687768, now seen corresponding path program 2 times [2022-02-11 01:09:27,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:27,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295540504] [2022-02-11 01:09:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:27,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:27,385 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:27,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295540504] [2022-02-11 01:09:27,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295540504] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:27,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527473787] [2022-02-11 01:09:27,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:09:27,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:27,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:27,387 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:27,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-11 01:09:27,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:09:27,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:27,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:09:27,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:27,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:27,575 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-02-11 01:09:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:27,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:27,648 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:09:27,649 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2022-02-11 01:09:27,658 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-02-11 01:09:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:27,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527473787] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:27,697 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:27,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2022-02-11 01:09:27,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436314055] [2022-02-11 01:09:27,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:27,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-11 01:09:27,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:27,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-11 01:09:27,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-11 01:09:27,699 INFO L87 Difference]: Start difference. First operand 57 states and 110 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:27,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:27,723 INFO L93 Difference]: Finished difference Result 82 states and 153 transitions. [2022-02-11 01:09:27,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 01:09:27,724 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 01:09:27,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:27,724 INFO L225 Difference]: With dead ends: 82 [2022-02-11 01:09:27,724 INFO L226 Difference]: Without dead ends: 79 [2022-02-11 01:09:27,724 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 7 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-11 01:09:27,725 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:27,725 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 66 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 28 Unchecked, 0.0s Time] [2022-02-11 01:09:27,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-02-11 01:09:27,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 59. [2022-02-11 01:09:27,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.9310344827586208) internal successors, (112), 58 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:27,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 112 transitions. [2022-02-11 01:09:27,737 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 112 transitions. Word has length 18 [2022-02-11 01:09:27,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:27,737 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 112 transitions. [2022-02-11 01:09:27,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:27,738 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 112 transitions. [2022-02-11 01:09:27,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 01:09:27,738 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:27,738 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:27,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:27,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:27,953 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:27,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:27,954 INFO L85 PathProgramCache]: Analyzing trace with hash 402122286, now seen corresponding path program 3 times [2022-02-11 01:09:27,954 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:27,954 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280001614] [2022-02-11 01:09:27,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:27,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:28,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:28,039 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:28,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280001614] [2022-02-11 01:09:28,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280001614] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:28,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455301127] [2022-02-11 01:09:28,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:09:28,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:28,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:28,040 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:28,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-11 01:09:28,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 01:09:28,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:28,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:09:28,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:28,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:28,149 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-02-11 01:09:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:28,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:28,215 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:09:28,215 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2022-02-11 01:09:28,227 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-02-11 01:09:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:28,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455301127] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:28,275 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:28,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2022-02-11 01:09:28,275 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322936880] [2022-02-11 01:09:28,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:28,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-11 01:09:28,276 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:28,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-11 01:09:28,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-02-11 01:09:28,276 INFO L87 Difference]: Start difference. First operand 59 states and 112 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:28,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:28,316 INFO L93 Difference]: Finished difference Result 94 states and 180 transitions. [2022-02-11 01:09:28,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 01:09:28,316 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 01:09:28,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:28,317 INFO L225 Difference]: With dead ends: 94 [2022-02-11 01:09:28,317 INFO L226 Difference]: Without dead ends: 87 [2022-02-11 01:09:28,317 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 7 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-02-11 01:09:28,317 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 28 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:28,318 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 54 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 01:09:28,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-02-11 01:09:28,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 65. [2022-02-11 01:09:28,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.9375) internal successors, (124), 64 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:28,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 124 transitions. [2022-02-11 01:09:28,324 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 124 transitions. Word has length 18 [2022-02-11 01:09:28,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:28,324 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 124 transitions. [2022-02-11 01:09:28,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:28,325 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 124 transitions. [2022-02-11 01:09:28,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-11 01:09:28,325 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:28,325 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:28,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-02-11 01:09:28,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:28,528 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:28,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:28,528 INFO L85 PathProgramCache]: Analyzing trace with hash 2093142942, now seen corresponding path program 4 times [2022-02-11 01:09:28,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:28,528 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360099701] [2022-02-11 01:09:28,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:28,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:28,599 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:28,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360099701] [2022-02-11 01:09:28,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360099701] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:28,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645846894] [2022-02-11 01:09:28,600 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:09:28,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:28,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:28,601 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:28,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-11 01:09:28,620 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:09:28,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:28,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 01:09:28,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:28,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:28,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:28,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645846894] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:28,776 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:28,776 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2022-02-11 01:09:28,776 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879331346] [2022-02-11 01:09:28,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:28,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 01:09:28,777 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:28,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 01:09:28,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-02-11 01:09:28,777 INFO L87 Difference]: Start difference. First operand 65 states and 124 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:29,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:29,114 INFO L93 Difference]: Finished difference Result 189 states and 352 transitions. [2022-02-11 01:09:29,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-11 01:09:29,115 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 15 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 20 [2022-02-11 01:09:29,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:29,116 INFO L225 Difference]: With dead ends: 189 [2022-02-11 01:09:29,116 INFO L226 Difference]: Without dead ends: 189 [2022-02-11 01:09:29,116 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=756, Unknown=0, NotChecked=0, Total=1056 [2022-02-11 01:09:29,117 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 110 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:29,117 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 143 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:09:29,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-02-11 01:09:29,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 73. [2022-02-11 01:09:29,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 72 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:29,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 150 transitions. [2022-02-11 01:09:29,120 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 150 transitions. Word has length 20 [2022-02-11 01:09:29,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:29,121 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 150 transitions. [2022-02-11 01:09:29,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:29,121 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 150 transitions. [2022-02-11 01:09:29,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-11 01:09:29,121 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:29,121 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:29,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:29,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:29,333 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:29,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:29,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1390002466, now seen corresponding path program 5 times [2022-02-11 01:09:29,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:29,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882650001] [2022-02-11 01:09:29,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:29,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:29,378 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:29,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882650001] [2022-02-11 01:09:29,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882650001] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:29,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999005517] [2022-02-11 01:09:29,378 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:09:29,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:29,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:29,380 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:29,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-11 01:09:29,402 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:09:29,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:29,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 01:09:29,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:29,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:29,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:29,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999005517] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:29,551 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:29,551 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-02-11 01:09:29,552 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914909377] [2022-02-11 01:09:29,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:29,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 01:09:29,552 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:29,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 01:09:29,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-02-11 01:09:29,553 INFO L87 Difference]: Start difference. First operand 73 states and 150 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:29,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:29,820 INFO L93 Difference]: Finished difference Result 219 states and 406 transitions. [2022-02-11 01:09:29,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-11 01:09:29,821 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-11 01:09:29,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:29,821 INFO L225 Difference]: With dead ends: 219 [2022-02-11 01:09:29,821 INFO L226 Difference]: Without dead ends: 205 [2022-02-11 01:09:29,822 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2022-02-11 01:09:29,822 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 176 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:29,822 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 79 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:09:29,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-02-11 01:09:29,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 102. [2022-02-11 01:09:29,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.1386138613861387) internal successors, (216), 101 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:29,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 216 transitions. [2022-02-11 01:09:29,826 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 216 transitions. Word has length 20 [2022-02-11 01:09:29,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:29,826 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 216 transitions. [2022-02-11 01:09:29,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:29,827 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 216 transitions. [2022-02-11 01:09:29,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-11 01:09:29,827 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:29,827 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:29,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:30,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:30,044 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:30,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:30,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1979372002, now seen corresponding path program 6 times [2022-02-11 01:09:30,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:30,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028089048] [2022-02-11 01:09:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:30,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:30,083 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:30,083 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:30,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028089048] [2022-02-11 01:09:30,083 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028089048] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:30,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498994753] [2022-02-11 01:09:30,083 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:09:30,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:30,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:30,084 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:30,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-11 01:09:30,107 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 01:09:30,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:30,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 01:09:30,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:30,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:30,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:30,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498994753] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:30,297 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:30,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2022-02-11 01:09:30,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595558628] [2022-02-11 01:09:30,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:30,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 01:09:30,298 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:30,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 01:09:30,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-02-11 01:09:30,298 INFO L87 Difference]: Start difference. First operand 102 states and 216 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:30,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:30,591 INFO L93 Difference]: Finished difference Result 245 states and 455 transitions. [2022-02-11 01:09:30,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-11 01:09:30,591 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 20 [2022-02-11 01:09:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:30,592 INFO L225 Difference]: With dead ends: 245 [2022-02-11 01:09:30,592 INFO L226 Difference]: Without dead ends: 245 [2022-02-11 01:09:30,592 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=692, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:09:30,593 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 213 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:30,593 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 102 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:09:30,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-02-11 01:09:30,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 118. [2022-02-11 01:09:30,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.2051282051282053) internal successors, (258), 117 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:30,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 258 transitions. [2022-02-11 01:09:30,597 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 258 transitions. Word has length 20 [2022-02-11 01:09:30,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:30,597 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 258 transitions. [2022-02-11 01:09:30,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:30,597 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 258 transitions. [2022-02-11 01:09:30,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-11 01:09:30,598 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:30,598 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:30,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:30,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:30,815 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:30,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:30,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1647693214, now seen corresponding path program 7 times [2022-02-11 01:09:30,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:30,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974408582] [2022-02-11 01:09:30,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:30,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:30,850 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:30,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974408582] [2022-02-11 01:09:30,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974408582] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:30,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165833482] [2022-02-11 01:09:30,850 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:09:30,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:30,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:30,851 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:30,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-11 01:09:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:30,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 01:09:30,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:30,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:31,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:31,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165833482] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:31,033 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:31,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2022-02-11 01:09:31,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763112393] [2022-02-11 01:09:31,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:31,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 01:09:31,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:31,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 01:09:31,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-02-11 01:09:31,034 INFO L87 Difference]: Start difference. First operand 118 states and 258 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:31,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:31,250 INFO L93 Difference]: Finished difference Result 205 states and 416 transitions. [2022-02-11 01:09:31,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-11 01:09:31,251 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 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 20 [2022-02-11 01:09:31,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:31,252 INFO L225 Difference]: With dead ends: 205 [2022-02-11 01:09:31,252 INFO L226 Difference]: Without dead ends: 203 [2022-02-11 01:09:31,252 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=259, Invalid=553, Unknown=0, NotChecked=0, Total=812 [2022-02-11 01:09:31,252 INFO L934 BasicCegarLoop]: 13 mSDtfsCounter, 127 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:31,253 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 54 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:09:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-02-11 01:09:31,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 120. [2022-02-11 01:09:31,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.1848739495798317) internal successors, (260), 119 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:31,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 260 transitions. [2022-02-11 01:09:31,256 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 260 transitions. Word has length 20 [2022-02-11 01:09:31,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:31,256 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 260 transitions. [2022-02-11 01:09:31,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:31,256 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 260 transitions. [2022-02-11 01:09:31,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-11 01:09:31,257 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:31,257 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:31,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:31,467 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,SelfDestructingSolverStorable11 [2022-02-11 01:09:31,467 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:31,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:31,468 INFO L85 PathProgramCache]: Analyzing trace with hash -240395856, now seen corresponding path program 8 times [2022-02-11 01:09:31,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:31,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589527477] [2022-02-11 01:09:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:31,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:09:31,508 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:31,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589527477] [2022-02-11 01:09:31,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589527477] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:31,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357418129] [2022-02-11 01:09:31,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:09:31,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:31,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:31,509 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:31,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-11 01:09:31,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:09:31,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:31,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 01:09:31,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:31,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:31,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357418129] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:31,700 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:31,700 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-02-11 01:09:31,700 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504070071] [2022-02-11 01:09:31,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:31,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 01:09:31,700 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:31,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 01:09:31,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-02-11 01:09:31,701 INFO L87 Difference]: Start difference. First operand 120 states and 260 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:32,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:32,093 INFO L93 Difference]: Finished difference Result 351 states and 688 transitions. [2022-02-11 01:09:32,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-11 01:09:32,093 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 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 20 [2022-02-11 01:09:32,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:32,094 INFO L225 Difference]: With dead ends: 351 [2022-02-11 01:09:32,094 INFO L226 Difference]: Without dead ends: 351 [2022-02-11 01:09:32,095 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=434, Invalid=972, Unknown=0, NotChecked=0, Total=1406 [2022-02-11 01:09:32,095 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 186 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:32,095 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 131 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:09:32,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-02-11 01:09:32,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 165. [2022-02-11 01:09:32,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 2.292682926829268) internal successors, (376), 164 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:32,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 376 transitions. [2022-02-11 01:09:32,100 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 376 transitions. Word has length 20 [2022-02-11 01:09:32,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:32,101 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 376 transitions. [2022-02-11 01:09:32,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:32,101 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 376 transitions. [2022-02-11 01:09:32,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-11 01:09:32,101 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:32,101 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:32,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:32,315 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,SelfDestructingSolverStorable12 [2022-02-11 01:09:32,315 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:32,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:32,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1351610928, now seen corresponding path program 9 times [2022-02-11 01:09:32,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:32,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753467137] [2022-02-11 01:09:32,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:32,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:32,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:09:32,368 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:32,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753467137] [2022-02-11 01:09:32,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753467137] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:32,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31132450] [2022-02-11 01:09:32,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:09:32,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:32,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:32,370 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:32,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-11 01:09:32,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 01:09:32,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:32,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 01:09:32,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:32,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:32,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:32,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:32,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31132450] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:32,539 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:32,539 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2022-02-11 01:09:32,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860869582] [2022-02-11 01:09:32,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:32,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 01:09:32,540 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:32,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 01:09:32,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-02-11 01:09:32,540 INFO L87 Difference]: Start difference. First operand 165 states and 376 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:32,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:32,749 INFO L93 Difference]: Finished difference Result 238 states and 512 transitions. [2022-02-11 01:09:32,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-11 01:09:32,750 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 20 [2022-02-11 01:09:32,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:32,752 INFO L225 Difference]: With dead ends: 238 [2022-02-11 01:09:32,752 INFO L226 Difference]: Without dead ends: 235 [2022-02-11 01:09:32,752 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:09:32,753 INFO L934 BasicCegarLoop]: 13 mSDtfsCounter, 115 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:32,753 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 60 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:09:32,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-02-11 01:09:32,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 183. [2022-02-11 01:09:32,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.340659340659341) internal successors, (426), 182 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:32,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 426 transitions. [2022-02-11 01:09:32,758 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 426 transitions. Word has length 20 [2022-02-11 01:09:32,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:32,758 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 426 transitions. [2022-02-11 01:09:32,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:32,758 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 426 transitions. [2022-02-11 01:09:32,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-11 01:09:32,759 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:32,759 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:32,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:32,971 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,SelfDestructingSolverStorable13 [2022-02-11 01:09:32,972 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:32,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:32,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1992477080, now seen corresponding path program 10 times [2022-02-11 01:09:32,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:32,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480280300] [2022-02-11 01:09:32,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:32,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:33,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:09:33,024 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:33,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480280300] [2022-02-11 01:09:33,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480280300] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:33,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389020030] [2022-02-11 01:09:33,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:09:33,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:33,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:33,025 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:33,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-11 01:09:33,044 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:09:33,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:33,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 01:09:33,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:33,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:33,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:33,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389020030] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:33,218 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:33,218 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2022-02-11 01:09:33,218 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211006533] [2022-02-11 01:09:33,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:33,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 01:09:33,219 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:33,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 01:09:33,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-02-11 01:09:33,219 INFO L87 Difference]: Start difference. First operand 183 states and 426 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:33,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:33,509 INFO L93 Difference]: Finished difference Result 302 states and 633 transitions. [2022-02-11 01:09:33,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-11 01:09:33,509 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 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 20 [2022-02-11 01:09:33,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:33,510 INFO L225 Difference]: With dead ends: 302 [2022-02-11 01:09:33,510 INFO L226 Difference]: Without dead ends: 300 [2022-02-11 01:09:33,511 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=309, Invalid=683, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:09:33,511 INFO L934 BasicCegarLoop]: 9 mSDtfsCounter, 151 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:33,511 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 65 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:09:33,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-02-11 01:09:33,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 183. [2022-02-11 01:09:33,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.3351648351648353) internal successors, (425), 182 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:33,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 425 transitions. [2022-02-11 01:09:33,516 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 425 transitions. Word has length 20 [2022-02-11 01:09:33,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:33,516 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 425 transitions. [2022-02-11 01:09:33,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:33,516 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 425 transitions. [2022-02-11 01:09:33,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-11 01:09:33,516 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:33,517 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:33,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-02-11 01:09:33,731 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,SelfDestructingSolverStorable14 [2022-02-11 01:09:33,731 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:33,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:33,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1796143950, now seen corresponding path program 11 times [2022-02-11 01:09:33,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:33,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310561590] [2022-02-11 01:09:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:33,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:33,766 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:33,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310561590] [2022-02-11 01:09:33,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310561590] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:33,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409527806] [2022-02-11 01:09:33,766 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:09:33,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:33,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:33,767 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:33,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-11 01:09:33,786 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:09:33,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:33,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 01:09:33,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:33,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:33,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409527806] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:33,941 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:33,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-02-11 01:09:33,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710916989] [2022-02-11 01:09:33,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:33,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 01:09:33,941 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:33,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 01:09:33,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-02-11 01:09:33,942 INFO L87 Difference]: Start difference. First operand 183 states and 425 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:34,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:34,171 INFO L93 Difference]: Finished difference Result 302 states and 642 transitions. [2022-02-11 01:09:34,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-11 01:09:34,172 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 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 20 [2022-02-11 01:09:34,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:34,173 INFO L225 Difference]: With dead ends: 302 [2022-02-11 01:09:34,173 INFO L226 Difference]: Without dead ends: 296 [2022-02-11 01:09:34,173 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=606, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:09:34,173 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 152 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:34,173 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 53 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:09:34,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-02-11 01:09:34,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 198. [2022-02-11 01:09:34,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.33502538071066) internal successors, (460), 197 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 460 transitions. [2022-02-11 01:09:34,178 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 460 transitions. Word has length 20 [2022-02-11 01:09:34,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:34,178 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 460 transitions. [2022-02-11 01:09:34,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:34,178 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 460 transitions. [2022-02-11 01:09:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-11 01:09:34,179 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:34,179 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:34,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:34,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-11 01:09:34,394 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:34,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:34,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1370143840, now seen corresponding path program 12 times [2022-02-11 01:09:34,394 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:34,394 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313037433] [2022-02-11 01:09:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:34,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:34,489 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:34,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313037433] [2022-02-11 01:09:34,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313037433] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:34,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152972755] [2022-02-11 01:09:34,490 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:09:34,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:34,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:34,491 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:34,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-11 01:09:34,514 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 01:09:34,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:34,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-11 01:09:34,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:34,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:34,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:34,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:34,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:34,746 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 7 [2022-02-11 01:09:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:34,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:34,897 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-11 01:09:34,898 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20 treesize of output 45 [2022-02-11 01:09:34,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:34,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:34,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:34,956 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 3 [2022-02-11 01:09:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:34,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152972755] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:34,993 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:34,993 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-02-11 01:09:34,993 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626702670] [2022-02-11 01:09:34,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:34,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-11 01:09:34,994 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:34,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-11 01:09:34,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-02-11 01:09:34,994 INFO L87 Difference]: Start difference. First operand 198 states and 460 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:35,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:35,076 INFO L93 Difference]: Finished difference Result 270 states and 611 transitions. [2022-02-11 01:09:35,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-11 01:09:35,076 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 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 22 [2022-02-11 01:09:35,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:35,077 INFO L225 Difference]: With dead ends: 270 [2022-02-11 01:09:35,077 INFO L226 Difference]: Without dead ends: 254 [2022-02-11 01:09:35,078 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-02-11 01:09:35,078 INFO L934 BasicCegarLoop]: 21 mSDtfsCounter, 48 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:35,078 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 121 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 0 Unknown, 50 Unchecked, 0.1s Time] [2022-02-11 01:09:35,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-02-11 01:09:35,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 221. [2022-02-11 01:09:35,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 2.3363636363636364) internal successors, (514), 220 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:35,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 514 transitions. [2022-02-11 01:09:35,082 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 514 transitions. Word has length 22 [2022-02-11 01:09:35,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:35,083 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 514 transitions. [2022-02-11 01:09:35,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:35,083 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 514 transitions. [2022-02-11 01:09:35,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-11 01:09:35,083 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:35,083 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:35,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:35,299 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,SelfDestructingSolverStorable16 [2022-02-11 01:09:35,299 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:35,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:35,300 INFO L85 PathProgramCache]: Analyzing trace with hash -313455896, now seen corresponding path program 13 times [2022-02-11 01:09:35,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:35,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407070733] [2022-02-11 01:09:35,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:35,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:35,385 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:35,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407070733] [2022-02-11 01:09:35,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407070733] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:35,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184426090] [2022-02-11 01:09:35,385 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:09:35,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:35,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:35,386 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:35,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-11 01:09:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:35,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-11 01:09:35,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:35,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:35,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:35,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:35,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:35,621 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 7 [2022-02-11 01:09:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:35,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:35,767 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-11 01:09:35,768 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20 treesize of output 45 [2022-02-11 01:09:35,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:35,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:35,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:35,817 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 3 [2022-02-11 01:09:35,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:35,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184426090] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:35,862 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:35,862 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-02-11 01:09:35,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459014296] [2022-02-11 01:09:35,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:35,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-11 01:09:35,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:35,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-11 01:09:35,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-02-11 01:09:35,863 INFO L87 Difference]: Start difference. First operand 221 states and 514 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:35,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:35,924 INFO L93 Difference]: Finished difference Result 263 states and 589 transitions. [2022-02-11 01:09:35,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-11 01:09:35,925 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 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 22 [2022-02-11 01:09:35,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:35,925 INFO L225 Difference]: With dead ends: 263 [2022-02-11 01:09:35,925 INFO L226 Difference]: Without dead ends: 253 [2022-02-11 01:09:35,926 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-02-11 01:09:35,926 INFO L934 BasicCegarLoop]: 19 mSDtfsCounter, 56 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:35,926 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 103 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 86 Unchecked, 0.1s Time] [2022-02-11 01:09:35,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-02-11 01:09:35,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 212. [2022-02-11 01:09:35,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.3554502369668247) internal successors, (497), 211 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:35,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 497 transitions. [2022-02-11 01:09:35,930 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 497 transitions. Word has length 22 [2022-02-11 01:09:35,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:35,930 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 497 transitions. [2022-02-11 01:09:35,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:35,930 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 497 transitions. [2022-02-11 01:09:35,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-11 01:09:35,931 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:35,931 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:35,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:36,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:36,147 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:36,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:36,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1887689564, now seen corresponding path program 14 times [2022-02-11 01:09:36,147 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:36,147 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608897077] [2022-02-11 01:09:36,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:36,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:36,233 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:36,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608897077] [2022-02-11 01:09:36,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608897077] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:36,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056194466] [2022-02-11 01:09:36,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:09:36,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:36,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:36,235 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:36,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-11 01:09:36,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:09:36,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:36,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-11 01:09:36,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:36,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:36,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:36,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:36,703 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:09:36,703 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 27 [2022-02-11 01:09:36,790 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:36,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:37,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:37,087 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:09:37,088 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 59 [2022-02-11 01:09:37,519 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:37,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056194466] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:37,519 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:37,519 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 24 [2022-02-11 01:09:37,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676700300] [2022-02-11 01:09:37,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:37,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:09:37,519 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:37,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:09:37,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:09:37,520 INFO L87 Difference]: Start difference. First operand 212 states and 497 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:38,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:38,153 INFO L93 Difference]: Finished difference Result 355 states and 801 transitions. [2022-02-11 01:09:38,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-11 01:09:38,153 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-11 01:09:38,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:38,154 INFO L225 Difference]: With dead ends: 355 [2022-02-11 01:09:38,154 INFO L226 Difference]: Without dead ends: 352 [2022-02-11 01:09:38,155 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=282, Invalid=1440, Unknown=0, NotChecked=0, Total=1722 [2022-02-11 01:09:38,155 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 80 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 221 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:38,155 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 171 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 230 Invalid, 0 Unknown, 221 Unchecked, 0.2s Time] [2022-02-11 01:09:38,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-02-11 01:09:38,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 228. [2022-02-11 01:09:38,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 2.33920704845815) internal successors, (531), 227 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 531 transitions. [2022-02-11 01:09:38,160 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 531 transitions. Word has length 22 [2022-02-11 01:09:38,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:38,160 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 531 transitions. [2022-02-11 01:09:38,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:38,160 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 531 transitions. [2022-02-11 01:09:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-11 01:09:38,161 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:38,161 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:38,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:38,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:38,361 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:38,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:38,362 INFO L85 PathProgramCache]: Analyzing trace with hash 816408682, now seen corresponding path program 15 times [2022-02-11 01:09:38,362 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:38,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994205241] [2022-02-11 01:09:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:38,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:38,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:38,460 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:38,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994205241] [2022-02-11 01:09:38,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994205241] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:38,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678696722] [2022-02-11 01:09:38,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:09:38,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:38,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:38,461 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:38,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-11 01:09:38,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 01:09:38,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:38,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-11 01:09:38,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:38,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:38,761 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:09:38,761 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 35 [2022-02-11 01:09:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:38,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:39,337 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:09:39,337 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 67 [2022-02-11 01:09:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:39,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678696722] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:39,986 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:39,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 25 [2022-02-11 01:09:39,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010956966] [2022-02-11 01:09:39,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:39,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:09:39,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:39,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:09:39,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:09:39,987 INFO L87 Difference]: Start difference. First operand 228 states and 531 transitions. Second operand has 26 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:40,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:40,955 INFO L93 Difference]: Finished difference Result 431 states and 961 transitions. [2022-02-11 01:09:40,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:09:40,956 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 25 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 22 [2022-02-11 01:09:40,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:40,957 INFO L225 Difference]: With dead ends: 431 [2022-02-11 01:09:40,957 INFO L226 Difference]: Without dead ends: 413 [2022-02-11 01:09:40,958 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=399, Invalid=2253, Unknown=0, NotChecked=0, Total=2652 [2022-02-11 01:09:40,958 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 108 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 412 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:40,959 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 162 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 329 Invalid, 0 Unknown, 412 Unchecked, 0.2s Time] [2022-02-11 01:09:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-02-11 01:09:40,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 259. [2022-02-11 01:09:40,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 2.317829457364341) internal successors, (598), 258 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:40,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 598 transitions. [2022-02-11 01:09:40,969 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 598 transitions. Word has length 22 [2022-02-11 01:09:40,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:40,969 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 598 transitions. [2022-02-11 01:09:40,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:40,970 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 598 transitions. [2022-02-11 01:09:40,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-11 01:09:40,970 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:40,970 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:40,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:41,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:41,183 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:41,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:41,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1928000206, now seen corresponding path program 16 times [2022-02-11 01:09:41,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:41,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143353775] [2022-02-11 01:09:41,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:41,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:41,281 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:41,281 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:41,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143353775] [2022-02-11 01:09:41,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143353775] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:41,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228845358] [2022-02-11 01:09:41,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:09:41,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:41,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:41,283 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:41,314 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:09:41,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:41,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-11 01:09:41,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:41,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-11 01:09:41,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:41,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:41,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:41,510 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 7 [2022-02-11 01:09:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:41,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:41,660 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-11 01:09:41,660 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20 treesize of output 45 [2022-02-11 01:09:41,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:41,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:41,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:41,708 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 3 [2022-02-11 01:09:41,762 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:41,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228845358] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:41,762 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:41,762 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-02-11 01:09:41,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626869953] [2022-02-11 01:09:41,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:41,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 01:09:41,763 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:41,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 01:09:41,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-02-11 01:09:41,763 INFO L87 Difference]: Start difference. First operand 259 states and 598 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:41,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:41,881 INFO L93 Difference]: Finished difference Result 334 states and 733 transitions. [2022-02-11 01:09:41,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-11 01:09:41,881 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 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 22 [2022-02-11 01:09:41,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:41,882 INFO L225 Difference]: With dead ends: 334 [2022-02-11 01:09:41,882 INFO L226 Difference]: Without dead ends: 311 [2022-02-11 01:09:41,883 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-02-11 01:09:41,883 INFO L934 BasicCegarLoop]: 23 mSDtfsCounter, 60 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:41,883 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 109 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 248 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-02-11 01:09:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-02-11 01:09:41,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 268. [2022-02-11 01:09:41,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 2.3183520599250937) internal successors, (619), 267 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:41,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 619 transitions. [2022-02-11 01:09:41,888 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 619 transitions. Word has length 22 [2022-02-11 01:09:41,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:41,888 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 619 transitions. [2022-02-11 01:09:41,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:41,888 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 619 transitions. [2022-02-11 01:09:41,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-11 01:09:41,888 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:41,888 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:41,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:42,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:42,099 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:42,100 INFO L85 PathProgramCache]: Analyzing trace with hash -871312262, now seen corresponding path program 17 times [2022-02-11 01:09:42,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:42,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280308875] [2022-02-11 01:09:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:42,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:42,182 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:42,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280308875] [2022-02-11 01:09:42,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280308875] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:42,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512029653] [2022-02-11 01:09:42,182 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:09:42,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:42,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:42,183 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:42,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-11 01:09:42,215 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:09:42,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:42,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-11 01:09:42,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:42,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:42,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:42,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:42,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 7 [2022-02-11 01:09:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:42,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:42,531 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-11 01:09:42,531 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20 treesize of output 45 [2022-02-11 01:09:42,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:42,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:42,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:42,592 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 3 [2022-02-11 01:09:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:42,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512029653] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:42,648 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:42,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-02-11 01:09:42,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985885807] [2022-02-11 01:09:42,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:42,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 01:09:42,649 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 01:09:42,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-02-11 01:09:42,649 INFO L87 Difference]: Start difference. First operand 268 states and 619 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:42,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:42,741 INFO L93 Difference]: Finished difference Result 329 states and 720 transitions. [2022-02-11 01:09:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-11 01:09:42,741 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 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 22 [2022-02-11 01:09:42,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:42,743 INFO L225 Difference]: With dead ends: 329 [2022-02-11 01:09:42,743 INFO L226 Difference]: Without dead ends: 326 [2022-02-11 01:09:42,743 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-02-11 01:09:42,743 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 62 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:42,743 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 119 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 210 Invalid, 0 Unknown, 45 Unchecked, 0.1s Time] [2022-02-11 01:09:42,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-02-11 01:09:42,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 264. [2022-02-11 01:09:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 2.32319391634981) internal successors, (611), 263 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:42,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 611 transitions. [2022-02-11 01:09:42,748 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 611 transitions. Word has length 22 [2022-02-11 01:09:42,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:42,748 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 611 transitions. [2022-02-11 01:09:42,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:42,748 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 611 transitions. [2022-02-11 01:09:42,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-11 01:09:42,749 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:42,749 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:42,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:42,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:42,963 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:42,964 INFO L85 PathProgramCache]: Analyzing trace with hash 962650606, now seen corresponding path program 18 times [2022-02-11 01:09:42,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:42,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990966979] [2022-02-11 01:09:42,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:42,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:43,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:43,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:43,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990966979] [2022-02-11 01:09:43,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990966979] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:43,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644203177] [2022-02-11 01:09:43,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:09:43,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:43,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:43,054 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:43,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-11 01:09:43,076 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 01:09:43,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:43,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-11 01:09:43,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:43,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:43,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:43,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:43,235 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:43,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 7 [2022-02-11 01:09:43,264 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:43,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:43,354 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-11 01:09:43,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20 treesize of output 45 [2022-02-11 01:09:43,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:43,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:43,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:43,412 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 3 [2022-02-11 01:09:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:43,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644203177] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:43,454 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:43,454 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-02-11 01:09:43,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433353337] [2022-02-11 01:09:43,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:43,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-11 01:09:43,455 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:43,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-11 01:09:43,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-02-11 01:09:43,455 INFO L87 Difference]: Start difference. First operand 264 states and 611 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:43,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:43,583 INFO L93 Difference]: Finished difference Result 357 states and 781 transitions. [2022-02-11 01:09:43,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-11 01:09:43,584 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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 22 [2022-02-11 01:09:43,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:43,585 INFO L225 Difference]: With dead ends: 357 [2022-02-11 01:09:43,585 INFO L226 Difference]: Without dead ends: 350 [2022-02-11 01:09:43,585 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-02-11 01:09:43,586 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 66 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:43,586 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 150 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:09:43,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-02-11 01:09:43,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 283. [2022-02-11 01:09:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 2.3297872340425534) internal successors, (657), 282 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:43,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 657 transitions. [2022-02-11 01:09:43,591 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 657 transitions. Word has length 22 [2022-02-11 01:09:43,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:43,591 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 657 transitions. [2022-02-11 01:09:43,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:43,591 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 657 transitions. [2022-02-11 01:09:43,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 01:09:43,591 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:43,592 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:43,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:43,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:43,807 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:43,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:43,808 INFO L85 PathProgramCache]: Analyzing trace with hash 419045022, now seen corresponding path program 19 times [2022-02-11 01:09:43,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:43,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101756730] [2022-02-11 01:09:43,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:43,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:43,869 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:43,870 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:43,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101756730] [2022-02-11 01:09:43,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101756730] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:43,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289293959] [2022-02-11 01:09:43,870 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:09:43,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:43,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:43,871 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:43,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-11 01:09:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:43,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 01:09:43,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:44,039 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:44,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:44,116 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:44,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289293959] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:44,117 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:44,117 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2022-02-11 01:09:44,117 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870671900] [2022-02-11 01:09:44,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:44,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-11 01:09:44,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:44,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-11 01:09:44,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2022-02-11 01:09:44,118 INFO L87 Difference]: Start difference. First operand 283 states and 657 transitions. Second operand has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:44,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:44,651 INFO L93 Difference]: Finished difference Result 565 states and 1194 transitions. [2022-02-11 01:09:44,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-11 01:09:44,651 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 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 24 [2022-02-11 01:09:44,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:44,653 INFO L225 Difference]: With dead ends: 565 [2022-02-11 01:09:44,653 INFO L226 Difference]: Without dead ends: 565 [2022-02-11 01:09:44,653 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=652, Invalid=1798, Unknown=0, NotChecked=0, Total=2450 [2022-02-11 01:09:44,654 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 186 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:44,654 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 135 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:09:44,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-02-11 01:09:44,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 261. [2022-02-11 01:09:44,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 2.330769230769231) internal successors, (606), 260 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:44,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 606 transitions. [2022-02-11 01:09:44,659 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 606 transitions. Word has length 24 [2022-02-11 01:09:44,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:44,659 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 606 transitions. [2022-02-11 01:09:44,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:44,659 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 606 transitions. [2022-02-11 01:09:44,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 01:09:44,660 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:44,660 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:44,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:44,882 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,SelfDestructingSolverStorable23 [2022-02-11 01:09:44,882 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:44,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash -989086942, now seen corresponding path program 20 times [2022-02-11 01:09:44,883 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:44,883 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897515311] [2022-02-11 01:09:44,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:44,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:44,935 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:44,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897515311] [2022-02-11 01:09:44,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897515311] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:44,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876392911] [2022-02-11 01:09:44,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:09:44,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:44,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:44,936 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:44,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-11 01:09:44,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:09:44,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:44,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 01:09:44,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:45,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:45,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876392911] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:45,158 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:45,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-11 01:09:45,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282420549] [2022-02-11 01:09:45,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:45,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-11 01:09:45,159 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:45,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-11 01:09:45,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-02-11 01:09:45,159 INFO L87 Difference]: Start difference. First operand 261 states and 606 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:45,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:45,646 INFO L93 Difference]: Finished difference Result 727 states and 1493 transitions. [2022-02-11 01:09:45,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-11 01:09:45,646 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 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 24 [2022-02-11 01:09:45,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:45,648 INFO L225 Difference]: With dead ends: 727 [2022-02-11 01:09:45,648 INFO L226 Difference]: Without dead ends: 683 [2022-02-11 01:09:45,649 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=562, Invalid=1508, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 01:09:45,649 INFO L934 BasicCegarLoop]: 14 mSDtfsCounter, 270 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:45,649 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 134 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:09:45,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-02-11 01:09:45,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 317. [2022-02-11 01:09:45,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 2.3512658227848102) internal successors, (743), 316 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:45,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 743 transitions. [2022-02-11 01:09:45,656 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 743 transitions. Word has length 24 [2022-02-11 01:09:45,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:45,656 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 743 transitions. [2022-02-11 01:09:45,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:45,656 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 743 transitions. [2022-02-11 01:09:45,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 01:09:45,657 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:45,657 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:45,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:45,872 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,SelfDestructingSolverStorable24 [2022-02-11 01:09:45,873 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:45,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:45,873 INFO L85 PathProgramCache]: Analyzing trace with hash 867513058, now seen corresponding path program 21 times [2022-02-11 01:09:45,873 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:45,873 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438620959] [2022-02-11 01:09:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:45,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:45,914 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:45,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438620959] [2022-02-11 01:09:45,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438620959] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:45,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092288713] [2022-02-11 01:09:45,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:09:45,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:45,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:45,916 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:45,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-11 01:09:45,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 01:09:45,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:45,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 01:09:45,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:46,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:46,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092288713] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:46,168 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:46,168 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2022-02-11 01:09:46,168 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262117827] [2022-02-11 01:09:46,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:46,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-11 01:09:46,168 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:46,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-11 01:09:46,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2022-02-11 01:09:46,169 INFO L87 Difference]: Start difference. First operand 317 states and 743 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:46,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:46,821 INFO L93 Difference]: Finished difference Result 759 states and 1599 transitions. [2022-02-11 01:09:46,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-11 01:09:46,821 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 20 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 24 [2022-02-11 01:09:46,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:46,824 INFO L225 Difference]: With dead ends: 759 [2022-02-11 01:09:46,824 INFO L226 Difference]: Without dead ends: 757 [2022-02-11 01:09:46,825 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=856, Invalid=2114, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:09:46,825 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 302 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:46,826 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 159 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:09:46,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-02-11 01:09:46,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 385. [2022-02-11 01:09:46,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 2.3984375) internal successors, (921), 384 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 921 transitions. [2022-02-11 01:09:46,840 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 921 transitions. Word has length 24 [2022-02-11 01:09:46,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:46,840 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 921 transitions. [2022-02-11 01:09:46,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:46,840 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 921 transitions. [2022-02-11 01:09:46,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 01:09:46,841 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:46,841 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:46,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:47,042 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,SelfDestructingSolverStorable25 [2022-02-11 01:09:47,042 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:47,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:47,043 INFO L85 PathProgramCache]: Analyzing trace with hash 535834270, now seen corresponding path program 22 times [2022-02-11 01:09:47,043 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:47,043 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639563597] [2022-02-11 01:09:47,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:47,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:47,094 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:47,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639563597] [2022-02-11 01:09:47,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639563597] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:47,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498505247] [2022-02-11 01:09:47,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:09:47,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:47,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:47,095 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:47,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-11 01:09:47,112 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:09:47,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:47,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 01:09:47,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:47,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:47,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498505247] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:47,337 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:47,337 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 19 [2022-02-11 01:09:47,337 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253701838] [2022-02-11 01:09:47,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:47,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-11 01:09:47,337 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:47,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-11 01:09:47,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-02-11 01:09:47,338 INFO L87 Difference]: Start difference. First operand 385 states and 921 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:47,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:47,737 INFO L93 Difference]: Finished difference Result 562 states and 1252 transitions. [2022-02-11 01:09:47,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-11 01:09:47,737 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 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 24 [2022-02-11 01:09:47,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:47,739 INFO L225 Difference]: With dead ends: 562 [2022-02-11 01:09:47,739 INFO L226 Difference]: Without dead ends: 558 [2022-02-11 01:09:47,739 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=539, Invalid=1267, Unknown=0, NotChecked=0, Total=1806 [2022-02-11 01:09:47,742 INFO L934 BasicCegarLoop]: 13 mSDtfsCounter, 126 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:47,742 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 77 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:09:47,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-02-11 01:09:47,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 385. [2022-02-11 01:09:47,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 2.3958333333333335) internal successors, (920), 384 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:47,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 920 transitions. [2022-02-11 01:09:47,749 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 920 transitions. Word has length 24 [2022-02-11 01:09:47,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:47,749 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 920 transitions. [2022-02-11 01:09:47,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:47,749 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 920 transitions. [2022-02-11 01:09:47,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 01:09:47,750 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:47,750 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:47,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:47,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:47,952 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:47,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:47,952 INFO L85 PathProgramCache]: Analyzing trace with hash 48878956, now seen corresponding path program 23 times [2022-02-11 01:09:47,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:47,953 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765120090] [2022-02-11 01:09:47,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:47,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:09:47,999 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:47,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765120090] [2022-02-11 01:09:47,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765120090] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:47,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216504786] [2022-02-11 01:09:47,999 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:09:47,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:47,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:48,000 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:48,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-11 01:09:48,021 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 01:09:48,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:48,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 01:09:48,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:48,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:48,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216504786] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:48,243 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:48,243 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 19 [2022-02-11 01:09:48,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652416414] [2022-02-11 01:09:48,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:48,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-11 01:09:48,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:48,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-11 01:09:48,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-02-11 01:09:48,244 INFO L87 Difference]: Start difference. First operand 385 states and 920 transitions. Second operand has 20 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:48,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:48,630 INFO L93 Difference]: Finished difference Result 616 states and 1364 transitions. [2022-02-11 01:09:48,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 01:09:48,631 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 19 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 24 [2022-02-11 01:09:48,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:48,632 INFO L225 Difference]: With dead ends: 616 [2022-02-11 01:09:48,632 INFO L226 Difference]: Without dead ends: 607 [2022-02-11 01:09:48,633 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=445, Invalid=1115, Unknown=0, NotChecked=0, Total=1560 [2022-02-11 01:09:48,633 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 156 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:48,633 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 102 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:09:48,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-02-11 01:09:48,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 406. [2022-02-11 01:09:48,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 2.417283950617284) internal successors, (979), 405 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:48,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 979 transitions. [2022-02-11 01:09:48,641 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 979 transitions. Word has length 24 [2022-02-11 01:09:48,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:48,641 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 979 transitions. [2022-02-11 01:09:48,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:48,641 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 979 transitions. [2022-02-11 01:09:48,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 01:09:48,642 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:48,642 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:48,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:48,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-11 01:09:48,858 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:48,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:48,858 INFO L85 PathProgramCache]: Analyzing trace with hash 493411978, now seen corresponding path program 24 times [2022-02-11 01:09:48,858 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:48,858 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208089121] [2022-02-11 01:09:48,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:48,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:48,904 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:48,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:48,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208089121] [2022-02-11 01:09:48,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208089121] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:48,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452189663] [2022-02-11 01:09:48,905 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:09:48,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:48,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:48,906 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:48,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-11 01:09:48,925 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-11 01:09:48,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:48,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 01:09:48,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:49,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:49,132 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:49,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452189663] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:49,133 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:49,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2022-02-11 01:09:49,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109187813] [2022-02-11 01:09:49,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:49,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-11 01:09:49,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:49,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-11 01:09:49,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-02-11 01:09:49,134 INFO L87 Difference]: Start difference. First operand 406 states and 979 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:49,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:49,552 INFO L93 Difference]: Finished difference Result 736 states and 1626 transitions. [2022-02-11 01:09:49,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-11 01:09:49,553 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 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 24 [2022-02-11 01:09:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:49,555 INFO L225 Difference]: With dead ends: 736 [2022-02-11 01:09:49,555 INFO L226 Difference]: Without dead ends: 722 [2022-02-11 01:09:49,555 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=544, Invalid=1348, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 01:09:49,556 INFO L934 BasicCegarLoop]: 14 mSDtfsCounter, 187 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:49,556 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 97 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:09:49,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-02-11 01:09:49,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 409. [2022-02-11 01:09:49,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 2.411764705882353) internal successors, (984), 408 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:49,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 984 transitions. [2022-02-11 01:09:49,563 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 984 transitions. Word has length 24 [2022-02-11 01:09:49,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:49,564 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 984 transitions. [2022-02-11 01:09:49,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:49,564 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 984 transitions. [2022-02-11 01:09:49,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 01:09:49,564 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:49,564 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:49,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-02-11 01:09:49,771 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,SelfDestructingSolverStorable28 [2022-02-11 01:09:49,771 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:49,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:49,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1128304716, now seen corresponding path program 25 times [2022-02-11 01:09:49,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:49,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194121287] [2022-02-11 01:09:49,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:49,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:09:49,833 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:49,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194121287] [2022-02-11 01:09:49,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194121287] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:49,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170219064] [2022-02-11 01:09:49,833 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:09:49,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:49,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:49,836 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:49,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-11 01:09:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:49,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 01:09:49,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:50,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:50,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170219064] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:50,110 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:50,110 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-02-11 01:09:50,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910674499] [2022-02-11 01:09:50,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:50,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-11 01:09:50,110 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:50,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-11 01:09:50,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2022-02-11 01:09:50,111 INFO L87 Difference]: Start difference. First operand 409 states and 984 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 20 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:50,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:50,706 INFO L93 Difference]: Finished difference Result 923 states and 1981 transitions. [2022-02-11 01:09:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-11 01:09:50,706 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 20 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 24 [2022-02-11 01:09:50,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:50,709 INFO L225 Difference]: With dead ends: 923 [2022-02-11 01:09:50,709 INFO L226 Difference]: Without dead ends: 923 [2022-02-11 01:09:50,710 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=815, Invalid=2047, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:09:50,710 INFO L934 BasicCegarLoop]: 20 mSDtfsCounter, 273 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:50,710 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 192 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:09:50,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2022-02-11 01:09:50,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 431. [2022-02-11 01:09:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 2.386046511627907) internal successors, (1026), 430 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:50,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1026 transitions. [2022-02-11 01:09:50,719 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1026 transitions. Word has length 24 [2022-02-11 01:09:50,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:50,719 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 1026 transitions. [2022-02-11 01:09:50,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 20 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:50,719 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1026 transitions. [2022-02-11 01:09:50,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 01:09:50,720 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:50,720 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:50,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:50,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:50,934 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:50,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:50,934 INFO L85 PathProgramCache]: Analyzing trace with hash -218142668, now seen corresponding path program 26 times [2022-02-11 01:09:50,934 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:50,934 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653850802] [2022-02-11 01:09:50,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:50,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:09:50,981 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:50,982 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653850802] [2022-02-11 01:09:50,982 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653850802] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:50,982 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72625891] [2022-02-11 01:09:50,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:09:50,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:50,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:50,983 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:50,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-11 01:09:51,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:09:51,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:51,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 01:09:51,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:51,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:51,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72625891] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:51,208 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:51,208 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2022-02-11 01:09:51,208 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798022151] [2022-02-11 01:09:51,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:51,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-11 01:09:51,209 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:51,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-11 01:09:51,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-02-11 01:09:51,209 INFO L87 Difference]: Start difference. First operand 431 states and 1026 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:51,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:51,563 INFO L93 Difference]: Finished difference Result 601 states and 1312 transitions. [2022-02-11 01:09:51,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-11 01:09:51,563 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 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 24 [2022-02-11 01:09:51,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:51,565 INFO L225 Difference]: With dead ends: 601 [2022-02-11 01:09:51,565 INFO L226 Difference]: Without dead ends: 583 [2022-02-11 01:09:51,566 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=403, Invalid=1079, Unknown=0, NotChecked=0, Total=1482 [2022-02-11 01:09:51,566 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 227 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:51,566 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 109 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:09:51,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-02-11 01:09:51,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 431. [2022-02-11 01:09:51,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 2.3767441860465115) internal successors, (1022), 430 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:51,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1022 transitions. [2022-02-11 01:09:51,574 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1022 transitions. Word has length 24 [2022-02-11 01:09:51,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:51,574 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 1022 transitions. [2022-02-11 01:09:51,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:51,574 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1022 transitions. [2022-02-11 01:09:51,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 01:09:51,578 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:51,578 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:51,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-02-11 01:09:51,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:51,795 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:51,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:51,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1556407664, now seen corresponding path program 27 times [2022-02-11 01:09:51,795 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:51,795 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652155039] [2022-02-11 01:09:51,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:51,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:51,848 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:09:51,848 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:51,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652155039] [2022-02-11 01:09:51,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652155039] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:51,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129292460] [2022-02-11 01:09:51,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:09:51,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:51,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:51,850 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:51,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-11 01:09:51,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 01:09:51,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:51,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 01:09:51,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:52,024 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:52,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:52,155 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:52,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129292460] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:52,156 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:52,156 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-02-11 01:09:52,156 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554634652] [2022-02-11 01:09:52,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:52,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-11 01:09:52,156 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:52,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-11 01:09:52,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-02-11 01:09:52,157 INFO L87 Difference]: Start difference. First operand 431 states and 1022 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:52,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:52,847 INFO L93 Difference]: Finished difference Result 1092 states and 2410 transitions. [2022-02-11 01:09:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-11 01:09:52,848 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-11 01:09:52,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:52,851 INFO L225 Difference]: With dead ends: 1092 [2022-02-11 01:09:52,851 INFO L226 Difference]: Without dead ends: 1092 [2022-02-11 01:09:52,852 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1359 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1165, Invalid=2741, Unknown=0, NotChecked=0, Total=3906 [2022-02-11 01:09:52,852 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 293 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:52,852 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 143 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:09:52,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2022-02-11 01:09:52,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 664. [2022-02-11 01:09:52,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 2.4630467571644044) internal successors, (1633), 663 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:52,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1633 transitions. [2022-02-11 01:09:52,866 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1633 transitions. Word has length 24 [2022-02-11 01:09:52,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:52,866 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 1633 transitions. [2022-02-11 01:09:52,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:52,867 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1633 transitions. [2022-02-11 01:09:52,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 01:09:52,868 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:52,868 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:52,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:53,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:53,084 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:53,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:53,085 INFO L85 PathProgramCache]: Analyzing trace with hash -195673560, now seen corresponding path program 28 times [2022-02-11 01:09:53,085 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:53,085 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150456724] [2022-02-11 01:09:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:53,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:53,169 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:09:53,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:53,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150456724] [2022-02-11 01:09:53,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150456724] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:53,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792100469] [2022-02-11 01:09:53,169 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:09:53,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:53,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:53,170 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:53,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-11 01:09:53,190 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:09:53,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:53,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 01:09:53,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:53,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:53,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792100469] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:53,405 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:53,405 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 19 [2022-02-11 01:09:53,406 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795237921] [2022-02-11 01:09:53,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:53,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-11 01:09:53,406 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:53,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-11 01:09:53,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-02-11 01:09:53,406 INFO L87 Difference]: Start difference. First operand 664 states and 1633 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:53,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:53,916 INFO L93 Difference]: Finished difference Result 945 states and 2149 transitions. [2022-02-11 01:09:53,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-11 01:09:53,916 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 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 24 [2022-02-11 01:09:53,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:53,919 INFO L225 Difference]: With dead ends: 945 [2022-02-11 01:09:53,919 INFO L226 Difference]: Without dead ends: 941 [2022-02-11 01:09:53,920 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=724, Invalid=1726, Unknown=0, NotChecked=0, Total=2450 [2022-02-11 01:09:53,920 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 230 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:53,920 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 76 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:09:53,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-02-11 01:09:53,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 664. [2022-02-11 01:09:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 2.4585218702865763) internal successors, (1630), 663 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:53,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1630 transitions. [2022-02-11 01:09:53,931 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1630 transitions. Word has length 24 [2022-02-11 01:09:53,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:53,931 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 1630 transitions. [2022-02-11 01:09:53,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:53,931 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1630 transitions. [2022-02-11 01:09:53,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 01:09:53,932 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:53,932 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:53,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:54,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:54,147 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:54,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:54,148 INFO L85 PathProgramCache]: Analyzing trace with hash -702019826, now seen corresponding path program 29 times [2022-02-11 01:09:54,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:54,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915980576] [2022-02-11 01:09:54,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:54,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:09:54,194 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:54,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915980576] [2022-02-11 01:09:54,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915980576] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:54,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365201997] [2022-02-11 01:09:54,194 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:09:54,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:54,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:54,195 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:54,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-11 01:09:54,214 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 01:09:54,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:54,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 01:09:54,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:54,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:54,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365201997] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:54,456 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:54,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2022-02-11 01:09:54,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163695397] [2022-02-11 01:09:54,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:54,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-11 01:09:54,457 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:54,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-11 01:09:54,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-02-11 01:09:54,457 INFO L87 Difference]: Start difference. First operand 664 states and 1630 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:54,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:54,923 INFO L93 Difference]: Finished difference Result 1032 states and 2346 transitions. [2022-02-11 01:09:54,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-11 01:09:54,930 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 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 24 [2022-02-11 01:09:54,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:54,933 INFO L225 Difference]: With dead ends: 1032 [2022-02-11 01:09:54,933 INFO L226 Difference]: Without dead ends: 1020 [2022-02-11 01:09:54,934 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=657, Invalid=1599, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 01:09:54,934 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 282 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:54,934 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 75 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:09:54,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2022-02-11 01:09:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 715. [2022-02-11 01:09:54,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 2.4747899159663866) internal successors, (1767), 714 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:54,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1767 transitions. [2022-02-11 01:09:54,946 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1767 transitions. Word has length 24 [2022-02-11 01:09:54,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:54,946 INFO L470 AbstractCegarLoop]: Abstraction has 715 states and 1767 transitions. [2022-02-11 01:09:54,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:54,946 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1767 transitions. [2022-02-11 01:09:54,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 01:09:54,948 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:54,948 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:54,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:55,163 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,SelfDestructingSolverStorable33 [2022-02-11 01:09:55,164 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:55,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:55,164 INFO L85 PathProgramCache]: Analyzing trace with hash -929241206, now seen corresponding path program 30 times [2022-02-11 01:09:55,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:55,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893292982] [2022-02-11 01:09:55,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:55,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:55,217 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:55,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893292982] [2022-02-11 01:09:55,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893292982] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:55,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330494966] [2022-02-11 01:09:55,217 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:09:55,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:55,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:55,218 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:55,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-11 01:09:55,237 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 01:09:55,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:55,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 01:09:55,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:55,363 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:55,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:55,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330494966] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:55,440 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:55,440 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-11 01:09:55,440 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659811241] [2022-02-11 01:09:55,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:55,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-11 01:09:55,441 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:55,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-11 01:09:55,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-02-11 01:09:55,441 INFO L87 Difference]: Start difference. First operand 715 states and 1767 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:55,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:55,813 INFO L93 Difference]: Finished difference Result 1063 states and 2453 transitions. [2022-02-11 01:09:55,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 01:09:55,814 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 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 24 [2022-02-11 01:09:55,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:55,817 INFO L225 Difference]: With dead ends: 1063 [2022-02-11 01:09:55,817 INFO L226 Difference]: Without dead ends: 1043 [2022-02-11 01:09:55,817 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=557, Invalid=1423, Unknown=0, NotChecked=0, Total=1980 [2022-02-11 01:09:55,818 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 258 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:55,818 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 73 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:09:55,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-02-11 01:09:55,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 771. [2022-02-11 01:09:55,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 770 states have (on average 2.4883116883116885) internal successors, (1916), 770 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1916 transitions. [2022-02-11 01:09:55,830 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1916 transitions. Word has length 24 [2022-02-11 01:09:55,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:55,830 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 1916 transitions. [2022-02-11 01:09:55,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:55,830 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1916 transitions. [2022-02-11 01:09:55,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:09:55,832 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:55,832 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:55,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:56,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:56,040 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:56,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:56,041 INFO L85 PathProgramCache]: Analyzing trace with hash 434491040, now seen corresponding path program 31 times [2022-02-11 01:09:56,041 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:56,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112164254] [2022-02-11 01:09:56,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:56,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:56,281 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:56,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112164254] [2022-02-11 01:09:56,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112164254] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:56,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536625548] [2022-02-11 01:09:56,281 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:09:56,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:56,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:56,282 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:56,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-11 01:09:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:56,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:09:56,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:56,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:56,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:56,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:56,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:56,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:56,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:56,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:56,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:56,605 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:09:56,628 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:56,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:56,842 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:09:56,843 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:09:57,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:57,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:57,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:57,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:57,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:57,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:57,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:57,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:57,036 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-02-11 01:09:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:57,067 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536625548] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:57,067 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:57,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 25 [2022-02-11 01:09:57,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069761720] [2022-02-11 01:09:57,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:57,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:09:57,067 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:57,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:09:57,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:09:57,068 INFO L87 Difference]: Start difference. First operand 771 states and 1916 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:57,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:57,882 INFO L93 Difference]: Finished difference Result 1161 states and 2807 transitions. [2022-02-11 01:09:57,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 01:09:57,882 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:09:57,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:57,885 INFO L225 Difference]: With dead ends: 1161 [2022-02-11 01:09:57,885 INFO L226 Difference]: Without dead ends: 1154 [2022-02-11 01:09:57,886 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=298, Invalid=2152, Unknown=0, NotChecked=0, Total=2450 [2022-02-11 01:09:57,886 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 105 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:57,887 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 138 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 330 Invalid, 0 Unknown, 85 Unchecked, 0.2s Time] [2022-02-11 01:09:57,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-02-11 01:09:57,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 819. [2022-02-11 01:09:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 2.4731051344743276) internal successors, (2023), 818 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:57,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2023 transitions. [2022-02-11 01:09:57,908 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2023 transitions. Word has length 26 [2022-02-11 01:09:57,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:57,908 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 2023 transitions. [2022-02-11 01:09:57,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:57,908 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2023 transitions. [2022-02-11 01:09:57,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:09:57,911 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:57,911 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:57,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:58,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:58,123 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:58,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:58,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1491178984, now seen corresponding path program 32 times [2022-02-11 01:09:58,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:58,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072895286] [2022-02-11 01:09:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:58,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:58,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:58,358 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:58,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072895286] [2022-02-11 01:09:58,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072895286] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:58,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785546289] [2022-02-11 01:09:58,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:09:58,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:58,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:58,359 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:58,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-11 01:09:58,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:09:58,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:58,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:09:58,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:58,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:58,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:58,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:58,665 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:58,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:58,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:58,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:09:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:58,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:58,904 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:09:58,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:09:59,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:59,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:59,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:59,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:59,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:59,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:59,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:59,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:59,025 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-02-11 01:09:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:59,067 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785546289] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:59,067 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:59,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 25 [2022-02-11 01:09:59,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940250524] [2022-02-11 01:09:59,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:59,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:09:59,067 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:59,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:09:59,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:09:59,068 INFO L87 Difference]: Start difference. First operand 819 states and 2023 transitions. Second operand has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:59,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:59,881 INFO L93 Difference]: Finished difference Result 1175 states and 2816 transitions. [2022-02-11 01:09:59,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-11 01:09:59,881 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:09:59,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:59,885 INFO L225 Difference]: With dead ends: 1175 [2022-02-11 01:09:59,885 INFO L226 Difference]: Without dead ends: 1172 [2022-02-11 01:09:59,886 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=298, Invalid=2152, Unknown=0, NotChecked=0, Total=2450 [2022-02-11 01:09:59,886 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 106 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:59,886 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 140 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 380 Invalid, 0 Unknown, 96 Unchecked, 0.2s Time] [2022-02-11 01:09:59,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2022-02-11 01:09:59,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 815. [2022-02-11 01:09:59,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 814 states have (on average 2.4754299754299756) internal successors, (2015), 814 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:59,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 2015 transitions. [2022-02-11 01:09:59,898 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 2015 transitions. Word has length 26 [2022-02-11 01:09:59,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:59,898 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 2015 transitions. [2022-02-11 01:09:59,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:59,898 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 2015 transitions. [2022-02-11 01:09:59,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:09:59,900 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:59,900 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:59,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-02-11 01:10:00,108 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,SelfDestructingSolverStorable36 [2022-02-11 01:10:00,108 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:10:00,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:10:00,109 INFO L85 PathProgramCache]: Analyzing trace with hash -83054684, now seen corresponding path program 33 times [2022-02-11 01:10:00,109 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:10:00,109 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274547823] [2022-02-11 01:10:00,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:10:00,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:10:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:00,322 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:10:00,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274547823] [2022-02-11 01:10:00,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274547823] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:10:00,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669971158] [2022-02-11 01:10:00,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:10:00,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:00,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:10:00,323 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:10:00,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-11 01:10:00,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 01:10:00,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:10:00,345 WARN L261 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 01:10:00,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:10:01,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:01,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:01,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:01,019 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:10:01,020 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 49 treesize of output 55 [2022-02-11 01:10:01,167 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:01,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:10:01,984 INFO L353 Elim1Store]: treesize reduction 24, result has 83.0 percent of original size [2022-02-11 01:10:01,984 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 53 treesize of output 138 [2022-02-11 01:10:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:05,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669971158] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:10:05,507 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:10:05,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 33 [2022-02-11 01:10:05,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469944669] [2022-02-11 01:10:05,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:10:05,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-11 01:10:05,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:10:05,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-11 01:10:05,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2022-02-11 01:10:05,509 INFO L87 Difference]: Start difference. First operand 815 states and 2015 transitions. Second operand has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:06,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:10:06,575 INFO L93 Difference]: Finished difference Result 1194 states and 2858 transitions. [2022-02-11 01:10:06,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-11 01:10:06,575 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:10:06,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:10:06,579 INFO L225 Difference]: With dead ends: 1194 [2022-02-11 01:10:06,579 INFO L226 Difference]: Without dead ends: 1188 [2022-02-11 01:10:06,579 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 34 SyntacticMatches, 7 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=342, Invalid=2850, Unknown=0, NotChecked=0, Total=3192 [2022-02-11 01:10:06,580 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 81 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 469 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:10:06,580 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 199 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 396 Invalid, 0 Unknown, 469 Unchecked, 0.2s Time] [2022-02-11 01:10:06,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2022-02-11 01:10:06,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 857. [2022-02-11 01:10:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 856 states have (on average 2.4661214953271027) internal successors, (2111), 856 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 2111 transitions. [2022-02-11 01:10:06,592 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 2111 transitions. Word has length 26 [2022-02-11 01:10:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:10:06,592 INFO L470 AbstractCegarLoop]: Abstraction has 857 states and 2111 transitions. [2022-02-11 01:10:06,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:06,592 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 2111 transitions. [2022-02-11 01:10:06,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:10:06,594 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:10:06,594 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:10:06,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-11 01:10:06,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-02-11 01:10:06,809 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:10:06,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:10:06,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1093121440, now seen corresponding path program 34 times [2022-02-11 01:10:06,810 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:10:06,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120951392] [2022-02-11 01:10:06,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:10:06,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:10:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:07,038 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:10:07,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120951392] [2022-02-11 01:10:07,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120951392] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:10:07,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456505067] [2022-02-11 01:10:07,038 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:10:07,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:07,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:10:07,039 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:10:07,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-11 01:10:07,062 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:10:07,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:10:07,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:10:07,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:10:07,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:07,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:07,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:07,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:07,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:07,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:07,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:07,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:07,343 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:10:07,365 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:07,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:10:07,583 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:10:07,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:10:07,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:07,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:07,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:07,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:07,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:07,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:07,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:07,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:07,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-02-11 01:10:07,788 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:07,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456505067] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:10:07,789 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:10:07,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 25 [2022-02-11 01:10:07,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989889362] [2022-02-11 01:10:07,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:10:07,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:10:07,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:10:07,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:10:07,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:10:07,789 INFO L87 Difference]: Start difference. First operand 857 states and 2111 transitions. Second operand has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:08,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:10:08,733 INFO L93 Difference]: Finished difference Result 1262 states and 3022 transitions. [2022-02-11 01:10:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-11 01:10:08,733 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:10:08,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:10:08,737 INFO L225 Difference]: With dead ends: 1262 [2022-02-11 01:10:08,737 INFO L226 Difference]: Without dead ends: 1259 [2022-02-11 01:10:08,737 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=310, Invalid=2240, Unknown=0, NotChecked=0, Total=2550 [2022-02-11 01:10:08,737 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 82 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 271 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:10:08,738 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 172 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 607 Invalid, 0 Unknown, 271 Unchecked, 0.3s Time] [2022-02-11 01:10:08,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2022-02-11 01:10:08,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 863. [2022-02-11 01:10:08,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 862 states have (on average 2.4628770301624128) internal successors, (2123), 862 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:08,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 2123 transitions. [2022-02-11 01:10:08,749 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 2123 transitions. Word has length 26 [2022-02-11 01:10:08,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:10:08,749 INFO L470 AbstractCegarLoop]: Abstraction has 863 states and 2123 transitions. [2022-02-11 01:10:08,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:08,750 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 2123 transitions. [2022-02-11 01:10:08,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:10:08,751 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:10:08,751 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:10:08,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-11 01:10:08,967 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,SelfDestructingSolverStorable38 [2022-02-11 01:10:08,967 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:10:08,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:10:08,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1170935528, now seen corresponding path program 35 times [2022-02-11 01:10:08,967 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:10:08,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770785457] [2022-02-11 01:10:08,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:10:08,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:10:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:09,191 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:09,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:10:09,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770785457] [2022-02-11 01:10:09,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770785457] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:10:09,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216712148] [2022-02-11 01:10:09,191 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:10:09,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:09,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:10:09,192 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:10:09,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-11 01:10:09,212 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 01:10:09,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:10:09,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:10:09,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:10:09,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:09,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:09,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:09,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:09,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:09,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:09,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:10:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:09,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:10:09,762 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:10:09,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:10:09,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:09,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:09,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:09,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:09,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:09,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:09,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:09,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:09,936 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-02-11 01:10:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:09,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216712148] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:10:09,968 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:10:09,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 25 [2022-02-11 01:10:09,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144971821] [2022-02-11 01:10:09,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:10:09,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:10:09,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:10:09,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:10:09,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:10:09,969 INFO L87 Difference]: Start difference. First operand 863 states and 2123 transitions. Second operand has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:10,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:10:10,928 INFO L93 Difference]: Finished difference Result 1252 states and 2968 transitions. [2022-02-11 01:10:10,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-11 01:10:10,928 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:10:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:10:10,931 INFO L225 Difference]: With dead ends: 1252 [2022-02-11 01:10:10,931 INFO L226 Difference]: Without dead ends: 1249 [2022-02-11 01:10:10,932 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=335, Invalid=2317, Unknown=0, NotChecked=0, Total=2652 [2022-02-11 01:10:10,932 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 119 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 235 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:10:10,932 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 146 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 418 Invalid, 0 Unknown, 235 Unchecked, 0.2s Time] [2022-02-11 01:10:10,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-02-11 01:10:10,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 861. [2022-02-11 01:10:10,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 860 states have (on average 2.4651162790697674) internal successors, (2120), 860 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 2120 transitions. [2022-02-11 01:10:10,954 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 2120 transitions. Word has length 26 [2022-02-11 01:10:10,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:10:10,954 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 2120 transitions. [2022-02-11 01:10:10,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:10,954 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 2120 transitions. [2022-02-11 01:10:10,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:10:10,955 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:10:10,955 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:10:10,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-11 01:10:11,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-11 01:10:11,172 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:10:11,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:10:11,172 INFO L85 PathProgramCache]: Analyzing trace with hash 234980, now seen corresponding path program 36 times [2022-02-11 01:10:11,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:10:11,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377433145] [2022-02-11 01:10:11,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:10:11,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:10:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:11,390 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:10:11,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377433145] [2022-02-11 01:10:11,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377433145] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:10:11,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614197157] [2022-02-11 01:10:11,390 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:10:11,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:11,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:10:11,391 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:10:11,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-11 01:10:11,411 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 01:10:11,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:10:11,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:10:11,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:10:11,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:11,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:11,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:11,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:11,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:11,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:11,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:10:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:11,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:10:11,934 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:10:11,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:10:12,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:12,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:12,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:12,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:12,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:12,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:12,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:12,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:12,090 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-02-11 01:10:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:12,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614197157] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:10:12,121 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:10:12,121 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 25 [2022-02-11 01:10:12,121 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537309773] [2022-02-11 01:10:12,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:10:12,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:10:12,122 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:10:12,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:10:12,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:10:12,122 INFO L87 Difference]: Start difference. First operand 861 states and 2120 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:12,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:10:12,957 INFO L93 Difference]: Finished difference Result 1190 states and 2852 transitions. [2022-02-11 01:10:12,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-11 01:10:12,957 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:10:12,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:10:12,960 INFO L225 Difference]: With dead ends: 1190 [2022-02-11 01:10:12,960 INFO L226 Difference]: Without dead ends: 1183 [2022-02-11 01:10:12,960 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=303, Invalid=2049, Unknown=0, NotChecked=0, Total=2352 [2022-02-11 01:10:12,960 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 110 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:10:12,960 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 127 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 409 Invalid, 0 Unknown, 206 Unchecked, 0.2s Time] [2022-02-11 01:10:12,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-02-11 01:10:12,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 868. [2022-02-11 01:10:12,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 2.4694348327566322) internal successors, (2141), 867 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:12,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 2141 transitions. [2022-02-11 01:10:12,972 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 2141 transitions. Word has length 26 [2022-02-11 01:10:12,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:10:12,972 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 2141 transitions. [2022-02-11 01:10:12,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:12,972 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 2141 transitions. [2022-02-11 01:10:12,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:10:12,974 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:10:12,974 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:10:12,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-02-11 01:10:13,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:13,179 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:10:13,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:10:13,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1008532964, now seen corresponding path program 37 times [2022-02-11 01:10:13,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:10:13,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332945157] [2022-02-11 01:10:13,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:10:13,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:10:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:13,404 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:10:13,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332945157] [2022-02-11 01:10:13,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332945157] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:10:13,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792079404] [2022-02-11 01:10:13,405 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:10:13,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:13,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:10:13,406 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:10:13,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-11 01:10:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:13,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:10:13,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:10:13,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:13,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:13,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:13,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:13,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:13,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:13,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:13,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:13,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:10:13,724 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:13,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:10:13,944 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:10:13,944 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:10:14,078 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:14,078 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:14,078 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:14,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:14,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:14,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:14,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:14,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:14,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-02-11 01:10:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:14,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792079404] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:10:14,116 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:10:14,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 25 [2022-02-11 01:10:14,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749533049] [2022-02-11 01:10:14,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:10:14,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:10:14,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:10:14,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:10:14,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:10:14,117 INFO L87 Difference]: Start difference. First operand 868 states and 2141 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:15,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:10:15,048 INFO L93 Difference]: Finished difference Result 1265 states and 3033 transitions. [2022-02-11 01:10:15,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-11 01:10:15,048 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:10:15,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:10:15,051 INFO L225 Difference]: With dead ends: 1265 [2022-02-11 01:10:15,051 INFO L226 Difference]: Without dead ends: 1258 [2022-02-11 01:10:15,052 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=315, Invalid=2037, Unknown=0, NotChecked=0, Total=2352 [2022-02-11 01:10:15,052 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 90 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 257 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:10:15,052 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 140 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 462 Invalid, 0 Unknown, 257 Unchecked, 0.2s Time] [2022-02-11 01:10:15,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2022-02-11 01:10:15,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 900. [2022-02-11 01:10:15,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 899 states have (on average 2.474972191323693) internal successors, (2225), 899 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:15,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 2225 transitions. [2022-02-11 01:10:15,065 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 2225 transitions. Word has length 26 [2022-02-11 01:10:15,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:10:15,065 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 2225 transitions. [2022-02-11 01:10:15,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:15,065 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 2225 transitions. [2022-02-11 01:10:15,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:10:15,066 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:10:15,066 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:10:15,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-02-11 01:10:15,279 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,SelfDestructingSolverStorable41 [2022-02-11 01:10:15,279 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:10:15,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:10:15,280 INFO L85 PathProgramCache]: Analyzing trace with hash -9411100, now seen corresponding path program 38 times [2022-02-11 01:10:15,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:10:15,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415743422] [2022-02-11 01:10:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:10:15,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:10:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:15,522 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:10:15,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415743422] [2022-02-11 01:10:15,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415743422] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:10:15,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838228985] [2022-02-11 01:10:15,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:10:15,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:15,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:10:15,524 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:10:15,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-11 01:10:15,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:10:15,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:10:15,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:10:15,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:10:15,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:15,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:15,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:15,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:15,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:15,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:15,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:15,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:15,803 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:10:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:15,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:10:16,067 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:10:16,067 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:10:16,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:16,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:16,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:16,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:16,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:16,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:16,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:16,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:16,209 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-02-11 01:10:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:16,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838228985] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:10:16,242 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:10:16,242 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 25 [2022-02-11 01:10:16,242 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189566713] [2022-02-11 01:10:16,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:10:16,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:10:16,242 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:10:16,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:10:16,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:10:16,243 INFO L87 Difference]: Start difference. First operand 900 states and 2225 transitions. Second operand has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:17,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:10:17,105 INFO L93 Difference]: Finished difference Result 1181 states and 2881 transitions. [2022-02-11 01:10:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-11 01:10:17,105 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:10:17,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:10:17,108 INFO L225 Difference]: With dead ends: 1181 [2022-02-11 01:10:17,108 INFO L226 Difference]: Without dead ends: 1174 [2022-02-11 01:10:17,108 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=294, Invalid=1962, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 01:10:17,108 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 90 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 221 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:10:17,108 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 118 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 449 Invalid, 0 Unknown, 221 Unchecked, 0.2s Time] [2022-02-11 01:10:17,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-02-11 01:10:17,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 911. [2022-02-11 01:10:17,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 910 states have (on average 2.4835164835164836) internal successors, (2260), 910 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 2260 transitions. [2022-02-11 01:10:17,121 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 2260 transitions. Word has length 26 [2022-02-11 01:10:17,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:10:17,121 INFO L470 AbstractCegarLoop]: Abstraction has 911 states and 2260 transitions. [2022-02-11 01:10:17,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:17,121 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 2260 transitions. [2022-02-11 01:10:17,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:10:17,123 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:10:17,123 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:10:17,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-02-11 01:10:17,323 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,SelfDestructingSolverStorable42 [2022-02-11 01:10:17,323 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:10:17,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:10:17,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2100038610, now seen corresponding path program 39 times [2022-02-11 01:10:17,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:10:17,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964065409] [2022-02-11 01:10:17,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:10:17,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:10:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:17,560 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:10:17,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964065409] [2022-02-11 01:10:17,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964065409] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:10:17,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724417248] [2022-02-11 01:10:17,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:10:17,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:17,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:10:17,562 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:10:17,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-11 01:10:17,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 01:10:17,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:10:17,583 WARN L261 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 01:10:17,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:10:18,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:18,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:18,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:18,159 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:10:18,160 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 49 treesize of output 55 [2022-02-11 01:10:18,308 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:18,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:10:19,106 INFO L353 Elim1Store]: treesize reduction 24, result has 83.0 percent of original size [2022-02-11 01:10:19,106 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 53 treesize of output 138 [2022-02-11 01:10:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:28,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724417248] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:10:28,411 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:10:28,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 33 [2022-02-11 01:10:28,411 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132320853] [2022-02-11 01:10:28,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:10:28,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-11 01:10:28,411 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:10:28,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-11 01:10:28,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2022-02-11 01:10:28,412 INFO L87 Difference]: Start difference. First operand 911 states and 2260 transitions. Second operand has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 33 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:29,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:10:29,781 INFO L93 Difference]: Finished difference Result 1339 states and 3202 transitions. [2022-02-11 01:10:29,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 01:10:29,782 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 33 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:10:29,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:10:29,787 INFO L225 Difference]: With dead ends: 1339 [2022-02-11 01:10:29,787 INFO L226 Difference]: Without dead ends: 1284 [2022-02-11 01:10:29,788 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 30 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=421, Invalid=3119, Unknown=0, NotChecked=0, Total=3540 [2022-02-11 01:10:29,789 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 121 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 927 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:10:29,789 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 212 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 322 Invalid, 0 Unknown, 927 Unchecked, 0.2s Time] [2022-02-11 01:10:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-02-11 01:10:29,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 923. [2022-02-11 01:10:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 922 states have (on average 2.477223427331887) internal successors, (2284), 922 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:29,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 2284 transitions. [2022-02-11 01:10:29,804 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 2284 transitions. Word has length 26 [2022-02-11 01:10:29,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:10:29,804 INFO L470 AbstractCegarLoop]: Abstraction has 923 states and 2284 transitions. [2022-02-11 01:10:29,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 33 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:29,805 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 2284 transitions. [2022-02-11 01:10:29,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:10:29,806 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:10:29,806 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:10:29,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-11 01:10:30,015 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,SelfDestructingSolverStorable43 [2022-02-11 01:10:30,015 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:10:30,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:10:30,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1232654318, now seen corresponding path program 40 times [2022-02-11 01:10:30,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:10:30,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945044885] [2022-02-11 01:10:30,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:10:30,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:10:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:30,233 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:30,233 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:10:30,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945044885] [2022-02-11 01:10:30,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945044885] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:10:30,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323770218] [2022-02-11 01:10:30,233 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:10:30,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:30,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:10:30,234 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:10:30,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-11 01:10:30,256 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:10:30,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:10:30,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:10:30,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:10:30,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:30,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:30,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:30,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:30,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:30,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:30,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:30,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:30,521 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:10:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:30,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:10:30,757 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:10:30,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:10:30,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:30,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:30,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:30,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:30,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:30,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:30,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:30,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:30,882 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-02-11 01:10:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:30,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323770218] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:10:30,915 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:10:30,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 25 [2022-02-11 01:10:30,915 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172988487] [2022-02-11 01:10:30,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:10:30,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:10:30,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:10:30,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:10:30,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:10:30,916 INFO L87 Difference]: Start difference. First operand 923 states and 2284 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:32,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:10:32,361 INFO L93 Difference]: Finished difference Result 1394 states and 3319 transitions. [2022-02-11 01:10:32,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-11 01:10:32,362 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:10:32,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:10:32,364 INFO L225 Difference]: With dead ends: 1394 [2022-02-11 01:10:32,364 INFO L226 Difference]: Without dead ends: 1309 [2022-02-11 01:10:32,364 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=518, Invalid=3022, Unknown=0, NotChecked=0, Total=3540 [2022-02-11 01:10:32,364 INFO L934 BasicCegarLoop]: 19 mSDtfsCounter, 154 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:10:32,364 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 228 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 717 Invalid, 0 Unknown, 247 Unchecked, 0.3s Time] [2022-02-11 01:10:32,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2022-02-11 01:10:32,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 975. [2022-02-11 01:10:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 2.452772073921971) internal successors, (2389), 974 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 2389 transitions. [2022-02-11 01:10:32,375 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 2389 transitions. Word has length 26 [2022-02-11 01:10:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:10:32,376 INFO L470 AbstractCegarLoop]: Abstraction has 975 states and 2389 transitions. [2022-02-11 01:10:32,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:32,376 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 2389 transitions. [2022-02-11 01:10:32,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:10:32,377 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:10:32,377 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:10:32,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-02-11 01:10:32,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:32,577 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:10:32,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:10:32,578 INFO L85 PathProgramCache]: Analyzing trace with hash 715108594, now seen corresponding path program 41 times [2022-02-11 01:10:32,578 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:10:32,578 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060810597] [2022-02-11 01:10:32,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:10:32,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:10:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:32,821 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:10:32,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060810597] [2022-02-11 01:10:32,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060810597] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:10:32,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147067392] [2022-02-11 01:10:32,821 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:10:32,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:32,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:10:32,822 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:10:32,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-11 01:10:32,843 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 01:10:32,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:10:32,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:10:32,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:10:33,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:33,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:33,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:33,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:33,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:33,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:33,132 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:10:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:33,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:10:33,377 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:10:33,377 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:10:33,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:33,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:33,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:33,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:33,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:33,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:33,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:33,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:33,524 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-02-11 01:10:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:33,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147067392] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:10:33,555 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:10:33,555 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 25 [2022-02-11 01:10:33,555 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739463675] [2022-02-11 01:10:33,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:10:33,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:10:33,555 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:10:33,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:10:33,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:10:33,556 INFO L87 Difference]: Start difference. First operand 975 states and 2389 transitions. Second operand has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:34,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:10:34,900 INFO L93 Difference]: Finished difference Result 1393 states and 3309 transitions. [2022-02-11 01:10:34,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-11 01:10:34,900 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:10:34,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:10:34,902 INFO L225 Difference]: With dead ends: 1393 [2022-02-11 01:10:34,902 INFO L226 Difference]: Without dead ends: 1379 [2022-02-11 01:10:34,903 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=530, Invalid=3252, Unknown=0, NotChecked=0, Total=3782 [2022-02-11 01:10:34,903 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 138 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:10:34,903 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 98 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 460 Invalid, 0 Unknown, 137 Unchecked, 0.2s Time] [2022-02-11 01:10:34,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2022-02-11 01:10:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 970. [2022-02-11 01:10:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 2.454076367389061) internal successors, (2378), 969 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:34,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 2378 transitions. [2022-02-11 01:10:34,920 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 2378 transitions. Word has length 26 [2022-02-11 01:10:34,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:10:34,920 INFO L470 AbstractCegarLoop]: Abstraction has 970 states and 2378 transitions. [2022-02-11 01:10:34,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:34,920 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 2378 transitions. [2022-02-11 01:10:34,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:10:34,922 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:10:34,922 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:10:34,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-11 01:10:35,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:35,139 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:10:35,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:10:35,140 INFO L85 PathProgramCache]: Analyzing trace with hash -597566298, now seen corresponding path program 42 times [2022-02-11 01:10:35,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:10:35,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794155740] [2022-02-11 01:10:35,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:10:35,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:10:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:35,421 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:35,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:10:35,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794155740] [2022-02-11 01:10:35,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794155740] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:10:35,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650489433] [2022-02-11 01:10:35,421 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:10:35,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:35,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:10:35,423 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:10:35,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-11 01:10:35,442 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 01:10:35,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:10:35,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:10:35,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:10:35,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:35,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:35,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:35,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:35,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:35,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:35,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:10:35,710 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:35,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:10:35,926 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:10:35,926 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:10:36,054 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:36,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:36,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:36,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:36,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:36,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:36,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:36,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:36,057 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-02-11 01:10:36,093 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:36,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650489433] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:10:36,093 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:10:36,093 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 25 [2022-02-11 01:10:36,093 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10984984] [2022-02-11 01:10:36,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:10:36,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:10:36,094 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:10:36,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:10:36,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:10:36,094 INFO L87 Difference]: Start difference. First operand 970 states and 2378 transitions. Second operand has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:37,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:10:37,800 INFO L93 Difference]: Finished difference Result 1579 states and 3725 transitions. [2022-02-11 01:10:37,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-11 01:10:37,800 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:10:37,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:10:37,803 INFO L225 Difference]: With dead ends: 1579 [2022-02-11 01:10:37,803 INFO L226 Difference]: Without dead ends: 1556 [2022-02-11 01:10:37,803 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=541, Invalid=3619, Unknown=0, NotChecked=0, Total=4160 [2022-02-11 01:10:37,803 INFO L934 BasicCegarLoop]: 14 mSDtfsCounter, 171 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:10:37,804 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 179 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:10:37,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2022-02-11 01:10:37,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1009. [2022-02-11 01:10:37,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 1008 states have (on average 2.4603174603174605) internal successors, (2480), 1008 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 2480 transitions. [2022-02-11 01:10:37,817 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 2480 transitions. Word has length 26 [2022-02-11 01:10:37,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:10:37,817 INFO L470 AbstractCegarLoop]: Abstraction has 1009 states and 2480 transitions. [2022-02-11 01:10:37,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:37,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 2480 transitions. [2022-02-11 01:10:37,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:10:37,818 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:10:37,818 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:10:37,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-02-11 01:10:38,019 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,SelfDestructingSolverStorable46 [2022-02-11 01:10:38,019 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:10:38,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:10:38,019 INFO L85 PathProgramCache]: Analyzing trace with hash 707454872, now seen corresponding path program 43 times [2022-02-11 01:10:38,019 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:10:38,019 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284463497] [2022-02-11 01:10:38,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:10:38,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:10:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:38,247 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:38,247 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:10:38,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284463497] [2022-02-11 01:10:38,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284463497] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:10:38,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072291392] [2022-02-11 01:10:38,248 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:10:38,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:38,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:10:38,249 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:10:38,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-11 01:10:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:38,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:10:38,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:10:38,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:38,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:38,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:38,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:38,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:38,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:38,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:38,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:38,544 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:10:38,564 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:38,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:10:38,775 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:10:38,775 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:10:38,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:38,894 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:38,894 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:38,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:38,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:38,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:38,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:38,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:38,901 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-02-11 01:10:38,931 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:38,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072291392] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:10:38,931 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:10:38,931 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 25 [2022-02-11 01:10:38,931 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088911899] [2022-02-11 01:10:38,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:10:38,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:10:38,932 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:10:38,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:10:38,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:10:38,932 INFO L87 Difference]: Start difference. First operand 1009 states and 2480 transitions. Second operand has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:40,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:10:40,194 INFO L93 Difference]: Finished difference Result 1387 states and 3307 transitions. [2022-02-11 01:10:40,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:10:40,194 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:10:40,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:10:40,197 INFO L225 Difference]: With dead ends: 1387 [2022-02-11 01:10:40,197 INFO L226 Difference]: Without dead ends: 1342 [2022-02-11 01:10:40,198 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=451, Invalid=2519, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:10:40,198 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 134 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:10:40,198 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 140 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 663 Invalid, 0 Unknown, 159 Unchecked, 0.3s Time] [2022-02-11 01:10:40,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2022-02-11 01:10:40,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 993. [2022-02-11 01:10:40,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 992 states have (on average 2.467741935483871) internal successors, (2448), 992 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 2448 transitions. [2022-02-11 01:10:40,225 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 2448 transitions. Word has length 26 [2022-02-11 01:10:40,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:10:40,225 INFO L470 AbstractCegarLoop]: Abstraction has 993 states and 2448 transitions. [2022-02-11 01:10:40,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:40,225 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 2448 transitions. [2022-02-11 01:10:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:10:40,226 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:10:40,227 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:10:40,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-11 01:10:40,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-02-11 01:10:40,434 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:10:40,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:10:40,434 INFO L85 PathProgramCache]: Analyzing trace with hash 277025134, now seen corresponding path program 44 times [2022-02-11 01:10:40,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:10:40,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671433759] [2022-02-11 01:10:40,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:10:40,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:10:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:40,639 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:40,640 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:10:40,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671433759] [2022-02-11 01:10:40,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671433759] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:10:40,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124003211] [2022-02-11 01:10:40,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:10:40,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:40,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:10:40,641 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:10:40,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-11 01:10:40,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:10:40,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:10:40,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:10:40,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:10:40,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:40,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:40,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:40,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:40,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:40,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:40,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:40,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:10:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:40,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:10:41,143 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:10:41,143 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:10:41,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:41,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:41,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:41,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:41,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:41,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:41,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:41,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:41,277 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 3 [2022-02-11 01:10:41,310 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:41,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124003211] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:10:41,310 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:10:41,310 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 23 [2022-02-11 01:10:41,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650182898] [2022-02-11 01:10:41,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:10:41,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 01:10:41,311 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:10:41,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 01:10:41,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-02-11 01:10:41,311 INFO L87 Difference]: Start difference. First operand 993 states and 2448 transitions. Second operand has 24 states, 24 states have (on average 2.5) internal successors, (60), 23 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:42,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:10:42,229 INFO L93 Difference]: Finished difference Result 1343 states and 3128 transitions. [2022-02-11 01:10:42,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-11 01:10:42,229 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5) internal successors, (60), 23 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:10:42,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:10:42,231 INFO L225 Difference]: With dead ends: 1343 [2022-02-11 01:10:42,231 INFO L226 Difference]: Without dead ends: 1285 [2022-02-11 01:10:42,232 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=323, Invalid=1933, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 01:10:42,232 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 230 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:10:42,232 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 212 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 899 Invalid, 0 Unknown, 11 Unchecked, 0.4s Time] [2022-02-11 01:10:42,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2022-02-11 01:10:42,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1081. [2022-02-11 01:10:42,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 2.4805555555555556) internal successors, (2679), 1080 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:42,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2679 transitions. [2022-02-11 01:10:42,247 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2679 transitions. Word has length 26 [2022-02-11 01:10:42,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:10:42,247 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2679 transitions. [2022-02-11 01:10:42,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5) internal successors, (60), 23 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:42,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2679 transitions. [2022-02-11 01:10:42,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:10:42,249 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:10:42,249 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:10:42,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-11 01:10:42,463 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,SelfDestructingSolverStorable48 [2022-02-11 01:10:42,464 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:10:42,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:10:42,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1792998102, now seen corresponding path program 45 times [2022-02-11 01:10:42,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:10:42,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950068304] [2022-02-11 01:10:42,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:10:42,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:10:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:42,680 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:42,681 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:10:42,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950068304] [2022-02-11 01:10:42,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950068304] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:10:42,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220406721] [2022-02-11 01:10:42,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:10:42,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:42,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:10:42,682 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:10:42,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-11 01:10:42,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-11 01:10:42,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:10:42,703 WARN L261 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-11 01:10:42,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:10:43,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:43,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:43,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:43,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:43,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:43,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:43,059 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:10:43,059 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 61 treesize of output 85 [2022-02-11 01:10:43,317 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:43,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:10:43,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:43,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:43,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:43,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:43,829 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:10:43,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 58 treesize of output 131 [2022-02-11 01:10:45,825 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:45,826 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220406721] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:10:45,826 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:10:45,826 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 34 [2022-02-11 01:10:45,826 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944986873] [2022-02-11 01:10:45,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:10:45,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-11 01:10:45,826 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:10:45,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-11 01:10:45,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1016, Unknown=0, NotChecked=0, Total=1190 [2022-02-11 01:10:45,827 INFO L87 Difference]: Start difference. First operand 1081 states and 2679 transitions. Second operand has 35 states, 35 states have (on average 1.8) internal successors, (63), 34 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:51,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:10:51,847 INFO L93 Difference]: Finished difference Result 2055 states and 4788 transitions. [2022-02-11 01:10:51,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-11 01:10:51,848 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 34 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:10:51,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:10:51,851 INFO L225 Difference]: With dead ends: 2055 [2022-02-11 01:10:51,851 INFO L226 Difference]: Without dead ends: 1985 [2022-02-11 01:10:51,852 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 24 SyntacticMatches, 14 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5247 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2012, Invalid=12508, Unknown=0, NotChecked=0, Total=14520 [2022-02-11 01:10:51,852 INFO L934 BasicCegarLoop]: 25 mSDtfsCounter, 388 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 270 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:10:51,852 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 395 Invalid, 2064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1690 Invalid, 0 Unknown, 270 Unchecked, 0.8s Time] [2022-02-11 01:10:51,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-02-11 01:10:51,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1177. [2022-02-11 01:10:51,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1176 states have (on average 2.5008503401360542) internal successors, (2941), 1176 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:51,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 2941 transitions. [2022-02-11 01:10:51,872 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 2941 transitions. Word has length 26 [2022-02-11 01:10:51,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:10:51,873 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 2941 transitions. [2022-02-11 01:10:51,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 34 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:51,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 2941 transitions. [2022-02-11 01:10:51,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:10:51,875 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:10:51,875 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:10:51,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-02-11 01:10:52,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:52,087 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:10:52,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:10:52,088 INFO L85 PathProgramCache]: Analyzing trace with hash 771199462, now seen corresponding path program 46 times [2022-02-11 01:10:52,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:10:52,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680081719] [2022-02-11 01:10:52,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:10:52,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:10:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:52,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:10:52,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680081719] [2022-02-11 01:10:52,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680081719] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:10:52,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381276478] [2022-02-11 01:10:52,312 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:10:52,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:52,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:10:52,313 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:10:52,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-11 01:10:52,332 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:10:52,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:10:52,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:10:52,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:10:52,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:52,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:52,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:52,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:52,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:52,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:52,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:52,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:52,588 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:10:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:52,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:10:52,828 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:10:52,828 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:10:53,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:53,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:53,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:53,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:53,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:53,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:53,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:53,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:53,014 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-02-11 01:10:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:53,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381276478] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:10:53,048 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:10:53,048 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 24 [2022-02-11 01:10:53,048 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216587179] [2022-02-11 01:10:53,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:10:53,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:10:53,048 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:10:53,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:10:53,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:10:53,049 INFO L87 Difference]: Start difference. First operand 1177 states and 2941 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:54,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:10:54,764 INFO L93 Difference]: Finished difference Result 1541 states and 3710 transitions. [2022-02-11 01:10:54,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-11 01:10:54,764 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:10:54,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:10:54,766 INFO L225 Difference]: With dead ends: 1541 [2022-02-11 01:10:54,766 INFO L226 Difference]: Without dead ends: 1473 [2022-02-11 01:10:54,767 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1168 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=540, Invalid=3620, Unknown=0, NotChecked=0, Total=4160 [2022-02-11 01:10:54,767 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 215 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:10:54,767 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 181 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 01:10:54,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2022-02-11 01:10:54,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1230. [2022-02-11 01:10:54,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1229 states have (on average 2.48006509357201) internal successors, (3048), 1229 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:54,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 3048 transitions. [2022-02-11 01:10:54,781 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 3048 transitions. Word has length 26 [2022-02-11 01:10:54,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:10:54,782 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 3048 transitions. [2022-02-11 01:10:54,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:54,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 3048 transitions. [2022-02-11 01:10:54,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:10:54,783 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:10:54,783 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:10:54,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-02-11 01:10:54,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:54,984 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:10:54,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:10:54,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1127291350, now seen corresponding path program 47 times [2022-02-11 01:10:54,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:10:54,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735269437] [2022-02-11 01:10:54,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:10:54,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:10:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:55,342 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:10:55,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735269437] [2022-02-11 01:10:55,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735269437] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:10:55,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2965300] [2022-02-11 01:10:55,343 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:10:55,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:55,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:10:55,344 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:10:55,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-11 01:10:55,365 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-11 01:10:55,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:10:55,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:10:55,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:10:55,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:55,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:55,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:55,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:55,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:55,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:55,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:55,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:55,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:55,658 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:10:55,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:55,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:10:55,903 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:10:55,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:10:56,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:56,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:56,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:56,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:56,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:56,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:56,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:56,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:56,104 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-02-11 01:10:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:56,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2965300] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:10:56,138 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:10:56,138 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 24 [2022-02-11 01:10:56,138 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647985815] [2022-02-11 01:10:56,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:10:56,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:10:56,138 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:10:56,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:10:56,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:10:56,138 INFO L87 Difference]: Start difference. First operand 1230 states and 3048 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:57,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:10:57,933 INFO L93 Difference]: Finished difference Result 1414 states and 3424 transitions. [2022-02-11 01:10:57,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-11 01:10:57,934 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:10:57,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:10:57,935 INFO L225 Difference]: With dead ends: 1414 [2022-02-11 01:10:57,935 INFO L226 Difference]: Without dead ends: 1388 [2022-02-11 01:10:57,936 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=475, Invalid=3431, Unknown=0, NotChecked=0, Total=3906 [2022-02-11 01:10:57,936 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 150 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:10:57,936 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 226 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:10:57,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2022-02-11 01:10:57,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 1244. [2022-02-11 01:10:57,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1243 states have (on average 2.474658085277554) internal successors, (3076), 1243 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:57,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3076 transitions. [2022-02-11 01:10:57,950 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3076 transitions. Word has length 26 [2022-02-11 01:10:57,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:10:57,950 INFO L470 AbstractCegarLoop]: Abstraction has 1244 states and 3076 transitions. [2022-02-11 01:10:57,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:57,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3076 transitions. [2022-02-11 01:10:57,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:10:57,951 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:10:57,951 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:10:57,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-02-11 01:10:58,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:58,153 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:10:58,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:10:58,153 INFO L85 PathProgramCache]: Analyzing trace with hash -509922762, now seen corresponding path program 48 times [2022-02-11 01:10:58,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:10:58,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868493384] [2022-02-11 01:10:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:10:58,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:10:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:58,386 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:10:58,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868493384] [2022-02-11 01:10:58,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868493384] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:10:58,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979048663] [2022-02-11 01:10:58,386 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:10:58,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:58,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:10:58,387 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:10:58,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-11 01:10:58,406 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 01:10:58,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:10:58,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:10:58,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:10:58,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:58,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:58,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:58,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:58,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:58,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:58,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:58,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:10:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:58,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:10:58,912 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:10:58,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:10:59,078 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:59,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:59,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:59,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:59,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:59,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:59,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:59,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:10:59,082 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-02-11 01:10:59,124 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:59,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979048663] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:10:59,124 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:10:59,124 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 25 [2022-02-11 01:10:59,124 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287616824] [2022-02-11 01:10:59,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:10:59,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:10:59,125 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:10:59,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:10:59,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:10:59,125 INFO L87 Difference]: Start difference. First operand 1244 states and 3076 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:00,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:00,364 INFO L93 Difference]: Finished difference Result 1765 states and 4214 transitions. [2022-02-11 01:11:00,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:11:00,365 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:11:00,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:00,367 INFO L225 Difference]: With dead ends: 1765 [2022-02-11 01:11:00,367 INFO L226 Difference]: Without dead ends: 1740 [2022-02-11 01:11:00,367 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=368, Invalid=2602, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:11:00,367 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 165 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:00,367 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 249 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 981 Invalid, 0 Unknown, 178 Unchecked, 0.4s Time] [2022-02-11 01:11:00,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2022-02-11 01:11:00,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1287. [2022-02-11 01:11:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1286 states have (on average 2.4805598755832037) internal successors, (3190), 1286 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 3190 transitions. [2022-02-11 01:11:00,383 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 3190 transitions. Word has length 26 [2022-02-11 01:11:00,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:00,383 INFO L470 AbstractCegarLoop]: Abstraction has 1287 states and 3190 transitions. [2022-02-11 01:11:00,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:00,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 3190 transitions. [2022-02-11 01:11:00,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:11:00,384 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:00,384 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:00,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-11 01:11:00,599 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,SelfDestructingSolverStorable52 [2022-02-11 01:11:00,600 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:00,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:00,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1776670478, now seen corresponding path program 49 times [2022-02-11 01:11:00,600 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:00,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976114985] [2022-02-11 01:11:00,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:00,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:00,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:00,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976114985] [2022-02-11 01:11:00,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976114985] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:00,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335872670] [2022-02-11 01:11:00,780 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:11:00,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:00,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:00,781 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:00,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-11 01:11:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:00,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:11:00,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:01,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:01,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:01,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:01,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:01,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:01,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:01,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:01,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:01,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:11:01,081 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:01,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:01,271 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:11:01,271 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:11:01,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:01,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:01,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:01,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:01,404 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:01,404 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:01,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:01,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:01,406 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 3 [2022-02-11 01:11:01,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:01,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335872670] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:01,451 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:01,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 23 [2022-02-11 01:11:01,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542582668] [2022-02-11 01:11:01,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:01,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 01:11:01,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:01,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 01:11:01,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2022-02-11 01:11:01,451 INFO L87 Difference]: Start difference. First operand 1287 states and 3190 transitions. Second operand has 24 states, 24 states have (on average 2.5) internal successors, (60), 23 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:02,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:02,521 INFO L93 Difference]: Finished difference Result 1693 states and 3972 transitions. [2022-02-11 01:11:02,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:11:02,522 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5) internal successors, (60), 23 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:11:02,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:02,525 INFO L225 Difference]: With dead ends: 1693 [2022-02-11 01:11:02,525 INFO L226 Difference]: Without dead ends: 1659 [2022-02-11 01:11:02,525 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 34 SyntacticMatches, 7 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=353, Invalid=2197, Unknown=0, NotChecked=0, Total=2550 [2022-02-11 01:11:02,525 INFO L934 BasicCegarLoop]: 28 mSDtfsCounter, 216 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:02,525 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 263 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 973 Invalid, 0 Unknown, 16 Unchecked, 0.4s Time] [2022-02-11 01:11:02,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2022-02-11 01:11:02,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1368. [2022-02-11 01:11:02,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1367 states have (on average 2.5003657644476958) internal successors, (3418), 1367 states have internal predecessors, (3418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:02,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 3418 transitions. [2022-02-11 01:11:02,543 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 3418 transitions. Word has length 26 [2022-02-11 01:11:02,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:02,543 INFO L470 AbstractCegarLoop]: Abstraction has 1368 states and 3418 transitions. [2022-02-11 01:11:02,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5) internal successors, (60), 23 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:02,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 3418 transitions. [2022-02-11 01:11:02,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:11:02,545 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:02,545 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:02,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-02-11 01:11:02,759 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,SelfDestructingSolverStorable53 [2022-02-11 01:11:02,759 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:02,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:02,760 INFO L85 PathProgramCache]: Analyzing trace with hash -719982534, now seen corresponding path program 50 times [2022-02-11 01:11:02,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:02,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400543580] [2022-02-11 01:11:02,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:02,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:02,953 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:02,954 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:02,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400543580] [2022-02-11 01:11:02,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400543580] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:02,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251362844] [2022-02-11 01:11:02,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:11:02,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:02,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:02,955 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:02,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-11 01:11:02,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:11:02,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:02,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:11:02,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:03,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:03,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:03,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:03,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:03,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:03,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:03,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:03,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:03,251 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:11:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:03,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:03,460 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:11:03,460 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:11:03,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:03,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:03,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:03,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:03,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:03,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:03,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:03,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:03,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 3 [2022-02-11 01:11:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:03,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251362844] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:03,641 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:03,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 23 [2022-02-11 01:11:03,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124693210] [2022-02-11 01:11:03,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:03,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 01:11:03,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:03,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 01:11:03,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2022-02-11 01:11:03,642 INFO L87 Difference]: Start difference. First operand 1368 states and 3418 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:04,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:04,595 INFO L93 Difference]: Finished difference Result 1665 states and 3913 transitions. [2022-02-11 01:11:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-11 01:11:04,595 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:11:04,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:04,598 INFO L225 Difference]: With dead ends: 1665 [2022-02-11 01:11:04,598 INFO L226 Difference]: Without dead ends: 1662 [2022-02-11 01:11:04,598 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 35 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=313, Invalid=1943, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 01:11:04,598 INFO L934 BasicCegarLoop]: 25 mSDtfsCounter, 195 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:04,598 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 234 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 940 Invalid, 0 Unknown, 80 Unchecked, 0.4s Time] [2022-02-11 01:11:04,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2022-02-11 01:11:04,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1364. [2022-02-11 01:11:04,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1363 states have (on average 2.5018341892883345) internal successors, (3410), 1363 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 3410 transitions. [2022-02-11 01:11:04,615 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 3410 transitions. Word has length 26 [2022-02-11 01:11:04,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:04,615 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 3410 transitions. [2022-02-11 01:11:04,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:04,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 3410 transitions. [2022-02-11 01:11:04,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:11:04,617 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:04,617 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:04,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-02-11 01:11:04,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:04,832 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:04,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:04,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1113980334, now seen corresponding path program 51 times [2022-02-11 01:11:04,833 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:04,833 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600529718] [2022-02-11 01:11:04,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:04,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:05,043 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:05,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600529718] [2022-02-11 01:11:05,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600529718] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:05,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968354119] [2022-02-11 01:11:05,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:11:05,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:05,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:05,045 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:05,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-11 01:11:05,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 01:11:05,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:05,065 WARN L261 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-11 01:11:05,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:05,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:05,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:05,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:05,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:05,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:05,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:05,419 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:05,437 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:11:05,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 61 treesize of output 85 [2022-02-11 01:11:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:06,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:06,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:06,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:06,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:06,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:06,500 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:11:06,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 58 treesize of output 131 [2022-02-11 01:11:08,505 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:08,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968354119] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:08,505 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:08,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 34 [2022-02-11 01:11:08,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465400838] [2022-02-11 01:11:08,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:08,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-11 01:11:08,506 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:08,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-11 01:11:08,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2022-02-11 01:11:08,506 INFO L87 Difference]: Start difference. First operand 1364 states and 3410 transitions. Second operand has 35 states, 35 states have (on average 1.8) internal successors, (63), 34 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:12,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:12,993 INFO L93 Difference]: Finished difference Result 2389 states and 5627 transitions. [2022-02-11 01:11:12,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-11 01:11:12,993 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 34 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:11:12,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:12,996 INFO L225 Difference]: With dead ends: 2389 [2022-02-11 01:11:12,996 INFO L226 Difference]: Without dead ends: 2321 [2022-02-11 01:11:12,997 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 24 SyntacticMatches, 9 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3062 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1586, Invalid=8314, Unknown=0, NotChecked=0, Total=9900 [2022-02-11 01:11:12,997 INFO L934 BasicCegarLoop]: 25 mSDtfsCounter, 409 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:12,997 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 366 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1293 Invalid, 0 Unknown, 92 Unchecked, 0.7s Time] [2022-02-11 01:11:12,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2321 states. [2022-02-11 01:11:13,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2321 to 1406. [2022-02-11 01:11:13,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 2.498932384341637) internal successors, (3511), 1405 states have internal predecessors, (3511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:13,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 3511 transitions. [2022-02-11 01:11:13,018 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 3511 transitions. Word has length 26 [2022-02-11 01:11:13,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:13,018 INFO L470 AbstractCegarLoop]: Abstraction has 1406 states and 3511 transitions. [2022-02-11 01:11:13,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 34 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:13,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 3511 transitions. [2022-02-11 01:11:13,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:11:13,020 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:13,020 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:13,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-02-11 01:11:13,235 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,SelfDestructingSolverStorable55 [2022-02-11 01:11:13,235 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:13,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:13,235 INFO L85 PathProgramCache]: Analyzing trace with hash -3388566, now seen corresponding path program 52 times [2022-02-11 01:11:13,235 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:13,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72850785] [2022-02-11 01:11:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:13,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:13,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:13,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:13,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72850785] [2022-02-11 01:11:13,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72850785] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:13,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223080807] [2022-02-11 01:11:13,447 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:11:13,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:13,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:13,448 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:13,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-11 01:11:13,466 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:11:13,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:13,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:11:13,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:13,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:13,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:13,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:13,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:13,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:13,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:13,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:13,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:13,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:11:13,727 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:13,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:13,930 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:11:13,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:11:14,107 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:14,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:14,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:14,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:14,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:14,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:14,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:14,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:14,110 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-02-11 01:11:14,156 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:14,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223080807] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:14,157 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:14,157 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 24 [2022-02-11 01:11:14,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289466060] [2022-02-11 01:11:14,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:14,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:11:14,157 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:14,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:11:14,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:11:14,157 INFO L87 Difference]: Start difference. First operand 1406 states and 3511 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:15,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:15,624 INFO L93 Difference]: Finished difference Result 1692 states and 4095 transitions. [2022-02-11 01:11:15,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 01:11:15,625 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:11:15,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:15,627 INFO L225 Difference]: With dead ends: 1692 [2022-02-11 01:11:15,627 INFO L226 Difference]: Without dead ends: 1608 [2022-02-11 01:11:15,627 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=485, Invalid=2821, Unknown=0, NotChecked=0, Total=3306 [2022-02-11 01:11:15,627 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 187 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:15,628 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 181 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 01:11:15,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2022-02-11 01:11:15,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1433. [2022-02-11 01:11:15,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1432 states have (on average 2.4797486033519553) internal successors, (3551), 1432 states have internal predecessors, (3551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:15,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 3551 transitions. [2022-02-11 01:11:15,642 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 3551 transitions. Word has length 26 [2022-02-11 01:11:15,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:15,642 INFO L470 AbstractCegarLoop]: Abstraction has 1433 states and 3551 transitions. [2022-02-11 01:11:15,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:15,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 3551 transitions. [2022-02-11 01:11:15,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:11:15,644 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:15,644 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:15,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-02-11 01:11:15,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-02-11 01:11:15,845 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:15,845 INFO L85 PathProgramCache]: Analyzing trace with hash 908041902, now seen corresponding path program 53 times [2022-02-11 01:11:15,845 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:15,845 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787379375] [2022-02-11 01:11:15,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:15,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:16,083 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:16,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787379375] [2022-02-11 01:11:16,083 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787379375] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:16,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787435378] [2022-02-11 01:11:16,083 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:11:16,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:16,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:16,084 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:16,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-11 01:11:16,105 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 01:11:16,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:16,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 01:11:16,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:16,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:16,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:16,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:16,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:16,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:16,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:16,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:16,339 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 7 [2022-02-11 01:11:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:16,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:16,582 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:11:16,582 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 30 treesize of output 95 [2022-02-11 01:11:16,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:16,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:16,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:16,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:16,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:16,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:16,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:16,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:16,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-02-11 01:11:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:16,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787435378] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:16,808 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:16,808 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 24 [2022-02-11 01:11:16,808 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331492047] [2022-02-11 01:11:16,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:16,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:11:16,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:16,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:11:16,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:11:16,809 INFO L87 Difference]: Start difference. First operand 1433 states and 3551 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:18,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:18,145 INFO L93 Difference]: Finished difference Result 1636 states and 3970 transitions. [2022-02-11 01:11:18,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:11:18,145 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:11:18,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:18,147 INFO L225 Difference]: With dead ends: 1636 [2022-02-11 01:11:18,147 INFO L226 Difference]: Without dead ends: 1626 [2022-02-11 01:11:18,147 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=394, Invalid=2686, Unknown=0, NotChecked=0, Total=3080 [2022-02-11 01:11:18,147 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 159 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:18,148 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 186 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 01:11:18,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2022-02-11 01:11:18,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1442. [2022-02-11 01:11:18,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1441 states have (on average 2.479528105482304) internal successors, (3573), 1441 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:18,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 3573 transitions. [2022-02-11 01:11:18,162 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 3573 transitions. Word has length 26 [2022-02-11 01:11:18,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:18,162 INFO L470 AbstractCegarLoop]: Abstraction has 1442 states and 3573 transitions. [2022-02-11 01:11:18,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:18,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 3573 transitions. [2022-02-11 01:11:18,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:11:18,164 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:18,164 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:18,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-11 01:11:18,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:18,367 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:18,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:18,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1403227622, now seen corresponding path program 54 times [2022-02-11 01:11:18,368 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:18,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97116204] [2022-02-11 01:11:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:18,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:18,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:18,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97116204] [2022-02-11 01:11:18,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97116204] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:18,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835797929] [2022-02-11 01:11:18,451 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:11:18,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:18,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:18,452 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:18,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-11 01:11:18,471 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 01:11:18,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:18,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:11:18,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:18,634 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:18,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:18,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835797929] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:18,732 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:18,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2022-02-11 01:11:18,732 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480851585] [2022-02-11 01:11:18,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:18,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:11:18,732 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:18,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:11:18,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:11:18,733 INFO L87 Difference]: Start difference. First operand 1442 states and 3573 transitions. Second operand has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:19,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:19,551 INFO L93 Difference]: Finished difference Result 2062 states and 4783 transitions. [2022-02-11 01:11:19,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-11 01:11:19,551 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:11:19,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:19,554 INFO L225 Difference]: With dead ends: 2062 [2022-02-11 01:11:19,554 INFO L226 Difference]: Without dead ends: 2062 [2022-02-11 01:11:19,554 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1238, Invalid=3592, Unknown=0, NotChecked=0, Total=4830 [2022-02-11 01:11:19,554 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 218 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:19,555 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 168 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 01:11:19,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2022-02-11 01:11:19,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 1289. [2022-02-11 01:11:19,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 1288 states have (on average 2.482919254658385) internal successors, (3198), 1288 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:19,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 3198 transitions. [2022-02-11 01:11:19,570 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 3198 transitions. Word has length 28 [2022-02-11 01:11:19,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:19,571 INFO L470 AbstractCegarLoop]: Abstraction has 1289 states and 3198 transitions. [2022-02-11 01:11:19,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:19,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 3198 transitions. [2022-02-11 01:11:19,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:11:19,572 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:19,572 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:19,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-02-11 01:11:19,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:19,775 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:19,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:19,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1901754846, now seen corresponding path program 55 times [2022-02-11 01:11:19,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:19,776 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075774496] [2022-02-11 01:11:19,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:19,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:19,852 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:19,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:19,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075774496] [2022-02-11 01:11:19,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075774496] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:19,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686406512] [2022-02-11 01:11:19,852 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:11:19,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:19,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:19,853 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:19,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-11 01:11:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:19,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:11:19,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:20,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:20,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686406512] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:20,127 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:20,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-11 01:11:20,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418538714] [2022-02-11 01:11:20,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:20,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:11:20,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:20,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:11:20,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:11:20,128 INFO L87 Difference]: Start difference. First operand 1289 states and 3198 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:20,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:20,963 INFO L93 Difference]: Finished difference Result 2310 states and 5344 transitions. [2022-02-11 01:11:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-11 01:11:20,963 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:11:20,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:20,966 INFO L225 Difference]: With dead ends: 2310 [2022-02-11 01:11:20,966 INFO L226 Difference]: Without dead ends: 2239 [2022-02-11 01:11:20,966 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1195 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1147, Invalid=3275, Unknown=0, NotChecked=0, Total=4422 [2022-02-11 01:11:20,967 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 416 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:20,967 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 177 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:11:20,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2022-02-11 01:11:20,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 1468. [2022-02-11 01:11:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 2.496932515337423) internal successors, (3663), 1467 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:20,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 3663 transitions. [2022-02-11 01:11:20,988 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 3663 transitions. Word has length 28 [2022-02-11 01:11:20,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:20,988 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 3663 transitions. [2022-02-11 01:11:20,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:20,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 3663 transitions. [2022-02-11 01:11:20,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:11:20,990 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:20,990 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:21,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-02-11 01:11:21,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-02-11 01:11:21,190 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:21,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:21,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2007391006, now seen corresponding path program 56 times [2022-02-11 01:11:21,191 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:21,191 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895920033] [2022-02-11 01:11:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:21,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:21,244 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:21,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895920033] [2022-02-11 01:11:21,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895920033] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:21,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610789501] [2022-02-11 01:11:21,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:11:21,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:21,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:21,246 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:21,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-11 01:11:21,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:11:21,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:21,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:11:21,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:21,431 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:21,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:21,587 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:21,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610789501] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:21,587 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:21,587 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 25 [2022-02-11 01:11:21,587 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841095675] [2022-02-11 01:11:21,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:21,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:11:21,587 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:21,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:11:21,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:11:21,588 INFO L87 Difference]: Start difference. First operand 1468 states and 3663 transitions. Second operand has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:22,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:22,661 INFO L93 Difference]: Finished difference Result 2686 states and 6345 transitions. [2022-02-11 01:11:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-11 01:11:22,661 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:11:22,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:22,665 INFO L225 Difference]: With dead ends: 2686 [2022-02-11 01:11:22,665 INFO L226 Difference]: Without dead ends: 2682 [2022-02-11 01:11:22,665 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2421 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1964, Invalid=5008, Unknown=0, NotChecked=0, Total=6972 [2022-02-11 01:11:22,666 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 371 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:22,666 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 231 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 01:11:22,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2022-02-11 01:11:22,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 1786. [2022-02-11 01:11:22,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1786 states, 1785 states have (on average 2.5126050420168067) internal successors, (4485), 1785 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:22,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 4485 transitions. [2022-02-11 01:11:22,689 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 4485 transitions. Word has length 28 [2022-02-11 01:11:22,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:22,689 INFO L470 AbstractCegarLoop]: Abstraction has 1786 states and 4485 transitions. [2022-02-11 01:11:22,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:22,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 4485 transitions. [2022-02-11 01:11:22,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:11:22,691 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:22,691 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:22,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-02-11 01:11:22,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:22,892 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:22,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:22,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1955897502, now seen corresponding path program 57 times [2022-02-11 01:11:22,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:22,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530657962] [2022-02-11 01:11:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:22,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:22,952 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:22,952 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530657962] [2022-02-11 01:11:22,952 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530657962] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:22,952 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145396714] [2022-02-11 01:11:22,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:11:22,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:22,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:22,953 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:22,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-11 01:11:22,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-11 01:11:22,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:22,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:11:22,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:23,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:23,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145396714] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:23,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:23,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 24 [2022-02-11 01:11:23,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9872943] [2022-02-11 01:11:23,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:23,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:11:23,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:23,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:11:23,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:11:23,279 INFO L87 Difference]: Start difference. First operand 1786 states and 4485 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:23,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:23,872 INFO L93 Difference]: Finished difference Result 2073 states and 5023 transitions. [2022-02-11 01:11:23,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-11 01:11:23,873 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:11:23,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:23,875 INFO L225 Difference]: With dead ends: 2073 [2022-02-11 01:11:23,875 INFO L226 Difference]: Without dead ends: 2069 [2022-02-11 01:11:23,875 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=981, Invalid=2441, Unknown=0, NotChecked=0, Total=3422 [2022-02-11 01:11:23,876 INFO L934 BasicCegarLoop]: 13 mSDtfsCounter, 172 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:23,876 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 97 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:11:23,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2022-02-11 01:11:23,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1761. [2022-02-11 01:11:23,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1761 states, 1760 states have (on average 2.513068181818182) internal successors, (4423), 1760 states have internal predecessors, (4423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:23,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 4423 transitions. [2022-02-11 01:11:23,915 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 4423 transitions. Word has length 28 [2022-02-11 01:11:23,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:23,915 INFO L470 AbstractCegarLoop]: Abstraction has 1761 states and 4423 transitions. [2022-02-11 01:11:23,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:23,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 4423 transitions. [2022-02-11 01:11:23,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:11:23,917 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:23,917 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:23,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-02-11 01:11:24,117 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,SelfDestructingSolverStorable61 [2022-02-11 01:11:24,118 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:24,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:24,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1571411288, now seen corresponding path program 58 times [2022-02-11 01:11:24,118 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:24,118 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963529849] [2022-02-11 01:11:24,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:24,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:11:24,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:24,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963529849] [2022-02-11 01:11:24,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963529849] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:24,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846566957] [2022-02-11 01:11:24,169 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:11:24,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:24,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:24,170 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:24,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-11 01:11:24,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:11:24,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:24,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:11:24,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:24,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:24,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846566957] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:24,486 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:24,486 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 24 [2022-02-11 01:11:24,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685932915] [2022-02-11 01:11:24,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:24,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:11:24,487 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:24,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:11:24,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:11:24,487 INFO L87 Difference]: Start difference. First operand 1761 states and 4423 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:25,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:25,123 INFO L93 Difference]: Finished difference Result 2379 states and 5765 transitions. [2022-02-11 01:11:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 01:11:25,124 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:11:25,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:25,127 INFO L225 Difference]: With dead ends: 2379 [2022-02-11 01:11:25,127 INFO L226 Difference]: Without dead ends: 2367 [2022-02-11 01:11:25,127 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=882, Invalid=2310, Unknown=0, NotChecked=0, Total=3192 [2022-02-11 01:11:25,127 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 272 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:25,127 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 101 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:11:25,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2022-02-11 01:11:25,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1864. [2022-02-11 01:11:25,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1863 states have (on average 2.526033279656468) internal successors, (4706), 1863 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:25,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 4706 transitions. [2022-02-11 01:11:25,161 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 4706 transitions. Word has length 28 [2022-02-11 01:11:25,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:25,162 INFO L470 AbstractCegarLoop]: Abstraction has 1864 states and 4706 transitions. [2022-02-11 01:11:25,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:25,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 4706 transitions. [2022-02-11 01:11:25,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:11:25,164 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:25,164 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:25,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-02-11 01:11:25,367 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,SelfDestructingSolverStorable62 [2022-02-11 01:11:25,367 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:25,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:25,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1126878266, now seen corresponding path program 59 times [2022-02-11 01:11:25,368 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:25,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234643382] [2022-02-11 01:11:25,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:25,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:25,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:25,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234643382] [2022-02-11 01:11:25,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234643382] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:25,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164461441] [2022-02-11 01:11:25,421 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:11:25,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:25,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:25,423 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:25,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-11 01:11:25,442 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-02-11 01:11:25,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:25,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:11:25,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:25,600 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:25,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:25,715 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:25,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164461441] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:25,715 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:25,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 24 [2022-02-11 01:11:25,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396179862] [2022-02-11 01:11:25,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:25,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:11:25,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:25,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:11:25,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:11:25,716 INFO L87 Difference]: Start difference. First operand 1864 states and 4706 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:26,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:26,351 INFO L93 Difference]: Finished difference Result 2488 states and 5987 transitions. [2022-02-11 01:11:26,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:11:26,351 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:11:26,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:26,354 INFO L225 Difference]: With dead ends: 2488 [2022-02-11 01:11:26,354 INFO L226 Difference]: Without dead ends: 2474 [2022-02-11 01:11:26,355 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=986, Invalid=2554, Unknown=0, NotChecked=0, Total=3540 [2022-02-11 01:11:26,355 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 202 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:26,355 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 141 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:11:26,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2022-02-11 01:11:26,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 1917. [2022-02-11 01:11:26,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1916 states have (on average 2.5328810020876826) internal successors, (4853), 1916 states have internal predecessors, (4853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:26,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 4853 transitions. [2022-02-11 01:11:26,378 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 4853 transitions. Word has length 28 [2022-02-11 01:11:26,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:26,378 INFO L470 AbstractCegarLoop]: Abstraction has 1917 states and 4853 transitions. [2022-02-11 01:11:26,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:26,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 4853 transitions. [2022-02-11 01:11:26,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:11:26,380 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:26,380 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:26,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-02-11 01:11:26,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:26,595 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:26,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:26,595 INFO L85 PathProgramCache]: Analyzing trace with hash 681233606, now seen corresponding path program 60 times [2022-02-11 01:11:26,595 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:26,595 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649749221] [2022-02-11 01:11:26,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:26,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:26,652 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:26,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649749221] [2022-02-11 01:11:26,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649749221] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:26,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371077203] [2022-02-11 01:11:26,652 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:11:26,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:26,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:26,653 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:26,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-11 01:11:26,674 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-11 01:11:26,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:26,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:11:26,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:26,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:26,948 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:26,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371077203] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:26,948 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:26,948 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 24 [2022-02-11 01:11:26,948 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971947705] [2022-02-11 01:11:26,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:26,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:11:26,948 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:26,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:11:26,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:11:26,949 INFO L87 Difference]: Start difference. First operand 1917 states and 4853 transitions. Second operand has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:27,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:27,565 INFO L93 Difference]: Finished difference Result 2707 states and 6510 transitions. [2022-02-11 01:11:27,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-11 01:11:27,565 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:11:27,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:27,568 INFO L225 Difference]: With dead ends: 2707 [2022-02-11 01:11:27,568 INFO L226 Difference]: Without dead ends: 2685 [2022-02-11 01:11:27,569 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=999, Invalid=2661, Unknown=0, NotChecked=0, Total=3660 [2022-02-11 01:11:27,569 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 263 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:27,569 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 136 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:11:27,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2022-02-11 01:11:27,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 1814. [2022-02-11 01:11:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1813 states have (on average 2.518477661334804) internal successors, (4566), 1813 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:27,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 4566 transitions. [2022-02-11 01:11:27,594 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 4566 transitions. Word has length 28 [2022-02-11 01:11:27,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:27,594 INFO L470 AbstractCegarLoop]: Abstraction has 1814 states and 4566 transitions. [2022-02-11 01:11:27,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 4566 transitions. [2022-02-11 01:11:27,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:11:27,596 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:27,596 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:27,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-02-11 01:11:27,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:27,797 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:27,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:27,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1834776692, now seen corresponding path program 61 times [2022-02-11 01:11:27,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:27,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268783391] [2022-02-11 01:11:27,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:27,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:11:27,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:27,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268783391] [2022-02-11 01:11:27,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268783391] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:27,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636527467] [2022-02-11 01:11:27,872 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:11:27,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:27,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:27,873 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:27,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-11 01:11:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:27,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:11:27,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:28,054 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:28,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:28,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636527467] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:28,176 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:28,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-11 01:11:28,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924171230] [2022-02-11 01:11:28,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:28,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:11:28,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:28,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:11:28,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:11:28,177 INFO L87 Difference]: Start difference. First operand 1814 states and 4566 transitions. Second operand has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 26 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:29,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:29,078 INFO L93 Difference]: Finished difference Result 2769 states and 6415 transitions. [2022-02-11 01:11:29,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-11 01:11:29,078 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 26 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:11:29,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:29,081 INFO L225 Difference]: With dead ends: 2769 [2022-02-11 01:11:29,081 INFO L226 Difference]: Without dead ends: 2769 [2022-02-11 01:11:29,082 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1438, Invalid=3964, Unknown=0, NotChecked=0, Total=5402 [2022-02-11 01:11:29,082 INFO L934 BasicCegarLoop]: 21 mSDtfsCounter, 348 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:29,082 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 231 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 01:11:29,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-02-11 01:11:29,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1600. [2022-02-11 01:11:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1599 states have (on average 2.4809255784865543) internal successors, (3967), 1599 states have internal predecessors, (3967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:29,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 3967 transitions. [2022-02-11 01:11:29,107 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 3967 transitions. Word has length 28 [2022-02-11 01:11:29,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:29,107 INFO L470 AbstractCegarLoop]: Abstraction has 1600 states and 3967 transitions. [2022-02-11 01:11:29,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 26 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:29,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 3967 transitions. [2022-02-11 01:11:29,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:11:29,109 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:29,109 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:29,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-02-11 01:11:29,323 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,SelfDestructingSolverStorable65 [2022-02-11 01:11:29,323 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:29,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:29,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1049648184, now seen corresponding path program 62 times [2022-02-11 01:11:29,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:29,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910376260] [2022-02-11 01:11:29,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:29,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:29,381 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:11:29,382 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:29,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910376260] [2022-02-11 01:11:29,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910376260] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:29,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468977702] [2022-02-11 01:11:29,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:11:29,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:29,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:29,383 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:29,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-11 01:11:29,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:11:29,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:29,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:11:29,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:29,563 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:29,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:29,681 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:29,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468977702] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:29,681 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:29,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 24 [2022-02-11 01:11:29,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889524882] [2022-02-11 01:11:29,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:29,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:11:29,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:29,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:11:29,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:11:29,682 INFO L87 Difference]: Start difference. First operand 1600 states and 3967 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:30,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:30,309 INFO L93 Difference]: Finished difference Result 2024 states and 4735 transitions. [2022-02-11 01:11:30,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 01:11:30,309 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:11:30,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:30,312 INFO L225 Difference]: With dead ends: 2024 [2022-02-11 01:11:30,312 INFO L226 Difference]: Without dead ends: 1985 [2022-02-11 01:11:30,312 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=820, Invalid=2372, Unknown=0, NotChecked=0, Total=3192 [2022-02-11 01:11:30,313 INFO L934 BasicCegarLoop]: 21 mSDtfsCounter, 234 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:30,313 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 181 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:11:30,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-02-11 01:11:30,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1546. [2022-02-11 01:11:30,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1546 states, 1545 states have (on average 2.4679611650485436) internal successors, (3813), 1545 states have internal predecessors, (3813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:30,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 3813 transitions. [2022-02-11 01:11:30,333 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 3813 transitions. Word has length 28 [2022-02-11 01:11:30,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:30,333 INFO L470 AbstractCegarLoop]: Abstraction has 1546 states and 3813 transitions. [2022-02-11 01:11:30,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:30,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 3813 transitions. [2022-02-11 01:11:30,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:11:30,335 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:30,335 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:30,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-02-11 01:11:30,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-02-11 01:11:30,549 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:30,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:30,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1729324172, now seen corresponding path program 63 times [2022-02-11 01:11:30,550 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:30,550 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903232116] [2022-02-11 01:11:30,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:30,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:30,619 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:11:30,619 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:30,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903232116] [2022-02-11 01:11:30,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903232116] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:30,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995145937] [2022-02-11 01:11:30,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:11:30,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:30,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:30,620 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:30,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-11 01:11:30,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-11 01:11:30,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:30,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:11:30,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:30,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:30,938 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:30,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995145937] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:30,938 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:30,938 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 25 [2022-02-11 01:11:30,938 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978679223] [2022-02-11 01:11:30,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:30,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:11:30,939 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:30,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:11:30,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:11:30,939 INFO L87 Difference]: Start difference. First operand 1546 states and 3813 transitions. Second operand has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:32,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:32,008 INFO L93 Difference]: Finished difference Result 2758 states and 6361 transitions. [2022-02-11 01:11:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-11 01:11:32,008 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:11:32,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:32,011 INFO L225 Difference]: With dead ends: 2758 [2022-02-11 01:11:32,011 INFO L226 Difference]: Without dead ends: 2758 [2022-02-11 01:11:32,012 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2346 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1855, Invalid=4625, Unknown=0, NotChecked=0, Total=6480 [2022-02-11 01:11:32,012 INFO L934 BasicCegarLoop]: 21 mSDtfsCounter, 336 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:32,013 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 255 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 01:11:32,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2022-02-11 01:11:32,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 1630. [2022-02-11 01:11:32,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 2.4487415592387967) internal successors, (3989), 1629 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:32,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 3989 transitions. [2022-02-11 01:11:32,037 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 3989 transitions. Word has length 28 [2022-02-11 01:11:32,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:32,038 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 3989 transitions. [2022-02-11 01:11:32,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:32,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 3989 transitions. [2022-02-11 01:11:32,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:11:32,040 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:32,040 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:32,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-02-11 01:11:32,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:32,240 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:32,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:32,240 INFO L85 PathProgramCache]: Analyzing trace with hash -819162124, now seen corresponding path program 64 times [2022-02-11 01:11:32,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:32,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82966868] [2022-02-11 01:11:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:32,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:11:32,292 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:32,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82966868] [2022-02-11 01:11:32,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82966868] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:32,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279052428] [2022-02-11 01:11:32,292 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:11:32,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:32,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:32,293 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:32,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-11 01:11:32,317 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:11:32,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:32,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:11:32,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:32,478 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:32,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:32,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279052428] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:32,595 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:32,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 24 [2022-02-11 01:11:32,595 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317616748] [2022-02-11 01:11:32,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:32,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:11:32,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:32,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:11:32,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:11:32,595 INFO L87 Difference]: Start difference. First operand 1630 states and 3989 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:33,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:33,129 INFO L93 Difference]: Finished difference Result 1964 states and 4612 transitions. [2022-02-11 01:11:33,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:11:33,129 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:11:33,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:33,131 INFO L225 Difference]: With dead ends: 1964 [2022-02-11 01:11:33,131 INFO L226 Difference]: Without dead ends: 1946 [2022-02-11 01:11:33,132 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=758, Invalid=2104, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:11:33,132 INFO L934 BasicCegarLoop]: 20 mSDtfsCounter, 214 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:33,132 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 122 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:11:33,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2022-02-11 01:11:33,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1629. [2022-02-11 01:11:33,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1628 states have (on average 2.447788697788698) internal successors, (3985), 1628 states have internal predecessors, (3985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 3985 transitions. [2022-02-11 01:11:33,149 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 3985 transitions. Word has length 28 [2022-02-11 01:11:33,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:33,149 INFO L470 AbstractCegarLoop]: Abstraction has 1629 states and 3985 transitions. [2022-02-11 01:11:33,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:33,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 3985 transitions. [2022-02-11 01:11:33,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:11:33,151 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:33,151 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:33,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-02-11 01:11:33,351 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,SelfDestructingSolverStorable68 [2022-02-11 01:11:33,352 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:33,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:33,352 INFO L85 PathProgramCache]: Analyzing trace with hash 617050672, now seen corresponding path program 65 times [2022-02-11 01:11:33,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:33,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722443249] [2022-02-11 01:11:33,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:33,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:11:33,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:33,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722443249] [2022-02-11 01:11:33,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722443249] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:33,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487739541] [2022-02-11 01:11:33,420 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:11:33,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:33,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:33,421 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:33,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-11 01:11:33,441 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 01:11:33,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:33,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:11:33,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:33,628 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:33,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:33,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487739541] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:33,772 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:33,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 25 [2022-02-11 01:11:33,772 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405178287] [2022-02-11 01:11:33,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:33,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:11:33,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:33,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:11:33,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=497, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:11:33,773 INFO L87 Difference]: Start difference. First operand 1629 states and 3985 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 25 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:34,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:34,999 INFO L93 Difference]: Finished difference Result 3359 states and 7975 transitions. [2022-02-11 01:11:34,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-11 01:11:34,999 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 25 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:11:34,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:35,003 INFO L225 Difference]: With dead ends: 3359 [2022-02-11 01:11:35,003 INFO L226 Difference]: Without dead ends: 3359 [2022-02-11 01:11:35,004 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3415 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2555, Invalid=6187, Unknown=0, NotChecked=0, Total=8742 [2022-02-11 01:11:35,004 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 350 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:35,004 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 214 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 01:11:35,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3359 states. [2022-02-11 01:11:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3359 to 2498. [2022-02-11 01:11:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2497 states have (on average 2.528233880656788) internal successors, (6313), 2497 states have internal predecessors, (6313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 6313 transitions. [2022-02-11 01:11:35,039 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 6313 transitions. Word has length 28 [2022-02-11 01:11:35,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:35,039 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 6313 transitions. [2022-02-11 01:11:35,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 25 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:35,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 6313 transitions. [2022-02-11 01:11:35,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:11:35,042 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:35,042 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:35,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-02-11 01:11:35,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-11 01:11:35,242 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:35,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:35,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1135030552, now seen corresponding path program 66 times [2022-02-11 01:11:35,243 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:35,243 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140945015] [2022-02-11 01:11:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:35,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:11:35,294 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:35,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140945015] [2022-02-11 01:11:35,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140945015] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:35,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108933963] [2022-02-11 01:11:35,294 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:11:35,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:35,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:35,295 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:35,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-11 01:11:35,315 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 01:11:35,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:35,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:11:35,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:35,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:35,615 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:35,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108933963] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:35,615 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:35,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 24 [2022-02-11 01:11:35,616 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219909988] [2022-02-11 01:11:35,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:35,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:11:35,616 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:35,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:11:35,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:11:35,616 INFO L87 Difference]: Start difference. First operand 2498 states and 6313 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:36,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:36,452 INFO L93 Difference]: Finished difference Result 3045 states and 7377 transitions. [2022-02-11 01:11:36,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-11 01:11:36,452 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:11:36,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:36,456 INFO L225 Difference]: With dead ends: 3045 [2022-02-11 01:11:36,456 INFO L226 Difference]: Without dead ends: 3041 [2022-02-11 01:11:36,456 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1432, Invalid=3538, Unknown=0, NotChecked=0, Total=4970 [2022-02-11 01:11:36,456 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 341 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:36,457 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 86 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:11:36,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2022-02-11 01:11:36,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 2472. [2022-02-11 01:11:36,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2471 states have (on average 2.525698097936058) internal successors, (6241), 2471 states have internal predecessors, (6241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:36,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 6241 transitions. [2022-02-11 01:11:36,487 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 6241 transitions. Word has length 28 [2022-02-11 01:11:36,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:36,487 INFO L470 AbstractCegarLoop]: Abstraction has 2472 states and 6241 transitions. [2022-02-11 01:11:36,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:36,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 6241 transitions. [2022-02-11 01:11:36,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:11:36,490 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:36,490 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:36,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-02-11 01:11:36,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:36,691 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:36,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:36,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1641376818, now seen corresponding path program 67 times [2022-02-11 01:11:36,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:36,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442618087] [2022-02-11 01:11:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:36,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:11:36,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:36,788 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442618087] [2022-02-11 01:11:36,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442618087] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:36,788 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260238685] [2022-02-11 01:11:36,788 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:11:36,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:36,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:36,789 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:36,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-11 01:11:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:36,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:11:36,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:36,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:37,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260238685] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:37,095 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:37,095 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 24 [2022-02-11 01:11:37,096 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971904822] [2022-02-11 01:11:37,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:37,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:11:37,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:37,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:11:37,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:11:37,096 INFO L87 Difference]: Start difference. First operand 2472 states and 6241 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:37,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:37,857 INFO L93 Difference]: Finished difference Result 3267 states and 7923 transitions. [2022-02-11 01:11:37,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-11 01:11:37,858 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:11:37,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:37,861 INFO L225 Difference]: With dead ends: 3267 [2022-02-11 01:11:37,861 INFO L226 Difference]: Without dead ends: 3255 [2022-02-11 01:11:37,862 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1301 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1250, Invalid=3172, Unknown=0, NotChecked=0, Total=4422 [2022-02-11 01:11:37,862 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 311 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:37,862 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 95 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:11:37,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2022-02-11 01:11:37,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 2666. [2022-02-11 01:11:37,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2666 states, 2665 states have (on average 2.5395872420262666) internal successors, (6768), 2665 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:37,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 6768 transitions. [2022-02-11 01:11:37,896 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 6768 transitions. Word has length 28 [2022-02-11 01:11:37,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:37,896 INFO L470 AbstractCegarLoop]: Abstraction has 2666 states and 6768 transitions. [2022-02-11 01:11:37,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:37,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 6768 transitions. [2022-02-11 01:11:37,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:11:37,898 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:37,899 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:37,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-02-11 01:11:38,099 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,SelfDestructingSolverStorable71 [2022-02-11 01:11:38,099 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:38,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1868598198, now seen corresponding path program 68 times [2022-02-11 01:11:38,099 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:38,099 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164024634] [2022-02-11 01:11:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:38,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:11:38,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:38,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164024634] [2022-02-11 01:11:38,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164024634] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:38,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810864030] [2022-02-11 01:11:38,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:11:38,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:38,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:38,173 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:38,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-11 01:11:38,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:11:38,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:38,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:11:38,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:38,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:38,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810864030] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:38,491 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:38,491 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 24 [2022-02-11 01:11:38,491 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528011789] [2022-02-11 01:11:38,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:38,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:11:38,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:38,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:11:38,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:11:38,492 INFO L87 Difference]: Start difference. First operand 2666 states and 6768 transitions. Second operand has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:39,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:39,245 INFO L93 Difference]: Finished difference Result 3608 states and 8768 transitions. [2022-02-11 01:11:39,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-11 01:11:39,245 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:11:39,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:39,249 INFO L225 Difference]: With dead ends: 3608 [2022-02-11 01:11:39,249 INFO L226 Difference]: Without dead ends: 3588 [2022-02-11 01:11:39,249 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1194, Invalid=3096, Unknown=0, NotChecked=0, Total=4290 [2022-02-11 01:11:39,251 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 305 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:39,251 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 121 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:11:39,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3588 states. [2022-02-11 01:11:39,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3588 to 2939. [2022-02-11 01:11:39,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2938 states have (on average 2.5517358747447245) internal successors, (7497), 2938 states have internal predecessors, (7497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:39,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 7497 transitions. [2022-02-11 01:11:39,288 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 7497 transitions. Word has length 28 [2022-02-11 01:11:39,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:39,288 INFO L470 AbstractCegarLoop]: Abstraction has 2939 states and 7497 transitions. [2022-02-11 01:11:39,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:39,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 7497 transitions. [2022-02-11 01:11:39,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:11:39,291 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:39,291 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:39,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-02-11 01:11:39,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:39,491 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:39,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:39,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1185012282, now seen corresponding path program 69 times [2022-02-11 01:11:39,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:39,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910542207] [2022-02-11 01:11:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:39,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:39,553 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:39,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910542207] [2022-02-11 01:11:39,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910542207] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:39,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289648121] [2022-02-11 01:11:39,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:11:39,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:39,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:39,554 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:39,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-11 01:11:39,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-11 01:11:39,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:39,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 01:11:39,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:39,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:39,825 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:39,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289648121] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:39,825 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:39,825 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-11 01:11:39,825 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188564200] [2022-02-11 01:11:39,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:39,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:11:39,825 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:39,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:11:39,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:11:39,826 INFO L87 Difference]: Start difference. First operand 2939 states and 7497 transitions. Second operand has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:40,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:40,435 INFO L93 Difference]: Finished difference Result 3723 states and 9138 transitions. [2022-02-11 01:11:40,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 01:11:40,435 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:11:40,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:40,440 INFO L225 Difference]: With dead ends: 3723 [2022-02-11 01:11:40,440 INFO L226 Difference]: Without dead ends: 3695 [2022-02-11 01:11:40,440 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1020, Invalid=2762, Unknown=0, NotChecked=0, Total=3782 [2022-02-11 01:11:40,440 INFO L934 BasicCegarLoop]: 13 mSDtfsCounter, 342 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:40,440 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 97 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:11:40,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3695 states. [2022-02-11 01:11:40,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3695 to 3119. [2022-02-11 01:11:40,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3119 states, 3118 states have (on average 2.5593329057087875) internal successors, (7980), 3118 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:40,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 7980 transitions. [2022-02-11 01:11:40,488 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 7980 transitions. Word has length 28 [2022-02-11 01:11:40,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:40,488 INFO L470 AbstractCegarLoop]: Abstraction has 3119 states and 7980 transitions. [2022-02-11 01:11:40,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:40,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 7980 transitions. [2022-02-11 01:11:40,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:11:40,492 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:40,492 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:40,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-02-11 01:11:40,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:40,695 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:40,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:40,696 INFO L85 PathProgramCache]: Analyzing trace with hash -114447712, now seen corresponding path program 70 times [2022-02-11 01:11:40,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:40,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589927985] [2022-02-11 01:11:40,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:40,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:40,986 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:40,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589927985] [2022-02-11 01:11:40,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589927985] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:40,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278095676] [2022-02-11 01:11:40,986 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:11:40,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:40,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:40,987 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:40,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-11 01:11:41,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:11:41,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:41,006 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:11:41,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:41,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:41,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:41,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:41,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:41,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:41,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:41,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:41,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:41,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:41,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:41,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:41,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:41,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:41,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:41,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:11:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:41,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:41,834 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:11:41,834 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:11:42,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:42,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:42,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:42,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:42,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:42,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:42,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:42,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:42,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:42,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:42,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:42,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:42,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:42,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:42,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:42,179 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:11:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:42,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278095676] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:42,211 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:42,211 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:11:42,211 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601253003] [2022-02-11 01:11:42,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:42,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:11:42,211 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:42,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:11:42,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:11:42,211 INFO L87 Difference]: Start difference. First operand 3119 states and 7980 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:44,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:44,076 INFO L93 Difference]: Finished difference Result 4166 states and 10459 transitions. [2022-02-11 01:11:44,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-11 01:11:44,077 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:11:44,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:44,082 INFO L225 Difference]: With dead ends: 4166 [2022-02-11 01:11:44,082 INFO L226 Difference]: Without dead ends: 4159 [2022-02-11 01:11:44,082 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=574, Invalid=4976, Unknown=0, NotChecked=0, Total=5550 [2022-02-11 01:11:44,082 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 135 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 296 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:44,082 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 228 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 660 Invalid, 0 Unknown, 296 Unchecked, 0.3s Time] [2022-02-11 01:11:44,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4159 states. [2022-02-11 01:11:44,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4159 to 3197. [2022-02-11 01:11:44,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3197 states, 3196 states have (on average 2.5528785982478097) internal successors, (8159), 3196 states have internal predecessors, (8159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:44,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 8159 transitions. [2022-02-11 01:11:44,119 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 8159 transitions. Word has length 30 [2022-02-11 01:11:44,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:44,119 INFO L470 AbstractCegarLoop]: Abstraction has 3197 states and 8159 transitions. [2022-02-11 01:11:44,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:44,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 8159 transitions. [2022-02-11 01:11:44,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:11:44,122 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:44,122 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:44,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-02-11 01:11:44,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:44,324 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:44,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:44,324 INFO L85 PathProgramCache]: Analyzing trace with hash 942240232, now seen corresponding path program 71 times [2022-02-11 01:11:44,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:44,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993630682] [2022-02-11 01:11:44,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:44,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:44,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:44,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993630682] [2022-02-11 01:11:44,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993630682] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:44,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634902759] [2022-02-11 01:11:44,615 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:11:44,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:44,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:44,644 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:44,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-11 01:11:44,664 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 01:11:44,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:44,665 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:11:44,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:45,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:45,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:45,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:45,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:45,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:45,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:45,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:45,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:45,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:45,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:45,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:45,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:45,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:45,062 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:11:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:45,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:45,459 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:11:45,459 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:11:46,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:46,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:46,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:46,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:46,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:46,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:46,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:46,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:46,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:46,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:46,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:46,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:46,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:46,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:46,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:46,008 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:11:46,039 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:46,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634902759] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:46,039 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:46,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:11:46,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245538463] [2022-02-11 01:11:46,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:46,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:11:46,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:46,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:11:46,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:11:46,040 INFO L87 Difference]: Start difference. First operand 3197 states and 8159 transitions. Second operand has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:48,100 INFO L93 Difference]: Finished difference Result 4404 states and 11005 transitions. [2022-02-11 01:11:48,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-11 01:11:48,100 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:11:48,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:48,105 INFO L225 Difference]: With dead ends: 4404 [2022-02-11 01:11:48,105 INFO L226 Difference]: Without dead ends: 4401 [2022-02-11 01:11:48,105 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=642, Invalid=5210, Unknown=0, NotChecked=0, Total=5852 [2022-02-11 01:11:48,106 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 167 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 417 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:48,106 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 210 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 599 Invalid, 0 Unknown, 417 Unchecked, 0.3s Time] [2022-02-11 01:11:48,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2022-02-11 01:11:48,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 3295. [2022-02-11 01:11:48,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3295 states, 3294 states have (on average 2.546448087431694) internal successors, (8388), 3294 states have internal predecessors, (8388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:48,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3295 states to 3295 states and 8388 transitions. [2022-02-11 01:11:48,143 INFO L78 Accepts]: Start accepts. Automaton has 3295 states and 8388 transitions. Word has length 30 [2022-02-11 01:11:48,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:48,143 INFO L470 AbstractCegarLoop]: Abstraction has 3295 states and 8388 transitions. [2022-02-11 01:11:48,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:48,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3295 states and 8388 transitions. [2022-02-11 01:11:48,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:11:48,146 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:48,146 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:48,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-02-11 01:11:48,361 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,SelfDestructingSolverStorable75 [2022-02-11 01:11:48,361 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:48,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:48,361 INFO L85 PathProgramCache]: Analyzing trace with hash -631993436, now seen corresponding path program 72 times [2022-02-11 01:11:48,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:48,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725046110] [2022-02-11 01:11:48,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:48,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:48,639 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:48,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725046110] [2022-02-11 01:11:48,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725046110] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:48,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727628098] [2022-02-11 01:11:48,639 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:11:48,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:48,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:48,640 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:48,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-11 01:11:48,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 01:11:48,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:48,681 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:11:48,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:49,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:49,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:49,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:49,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:49,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:49,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:49,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:49,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:49,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:49,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:49,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:49,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:49,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:49,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:49,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:49,077 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:11:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:49,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:49,488 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:11:49,488 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:11:49,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:49,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:49,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:49,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:49,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:49,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:49,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:49,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:49,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:49,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:49,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:49,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:49,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:49,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:49,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:49,892 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:11:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:49,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727628098] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:49,923 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:49,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:11:49,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15130762] [2022-02-11 01:11:49,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:49,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:11:49,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:49,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:11:49,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:11:49,924 INFO L87 Difference]: Start difference. First operand 3295 states and 8388 transitions. Second operand has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:51,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:51,747 INFO L93 Difference]: Finished difference Result 4374 states and 10904 transitions. [2022-02-11 01:11:51,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-11 01:11:51,748 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:11:51,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:51,754 INFO L225 Difference]: With dead ends: 4374 [2022-02-11 01:11:51,754 INFO L226 Difference]: Without dead ends: 4371 [2022-02-11 01:11:51,754 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1236 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=526, Invalid=4586, Unknown=0, NotChecked=0, Total=5112 [2022-02-11 01:11:51,754 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 118 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 273 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:51,754 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 233 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 668 Invalid, 0 Unknown, 273 Unchecked, 0.4s Time] [2022-02-11 01:11:51,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2022-02-11 01:11:51,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 3320. [2022-02-11 01:11:51,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3320 states, 3319 states have (on average 2.5432359144320578) internal successors, (8441), 3319 states have internal predecessors, (8441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3320 states to 3320 states and 8441 transitions. [2022-02-11 01:11:51,802 INFO L78 Accepts]: Start accepts. Automaton has 3320 states and 8441 transitions. Word has length 30 [2022-02-11 01:11:51,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:51,802 INFO L470 AbstractCegarLoop]: Abstraction has 3320 states and 8441 transitions. [2022-02-11 01:11:51,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3320 states and 8441 transitions. [2022-02-11 01:11:51,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:11:51,806 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:51,806 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:51,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-02-11 01:11:52,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:52,019 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:52,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1642060192, now seen corresponding path program 73 times [2022-02-11 01:11:52,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:52,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459638779] [2022-02-11 01:11:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:52,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:52,317 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:52,317 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:52,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459638779] [2022-02-11 01:11:52,317 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459638779] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:52,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716561008] [2022-02-11 01:11:52,318 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:11:52,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:52,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:52,318 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:52,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-11 01:11:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:52,348 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:11:52,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:52,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:52,740 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:52,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:52,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:52,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:52,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:52,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:52,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:52,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:52,744 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:52,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:52,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:52,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:11:52,767 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:52,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:53,155 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:11:53,156 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:11:53,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:53,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:53,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:53,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:53,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:53,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:53,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:53,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:53,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:53,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:53,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:53,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:53,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:53,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:53,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:53,676 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:11:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:53,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716561008] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:53,708 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:53,708 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:11:53,708 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977336306] [2022-02-11 01:11:53,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:53,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:11:53,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:11:53,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:11:53,709 INFO L87 Difference]: Start difference. First operand 3320 states and 8441 transitions. Second operand has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:55,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:55,473 INFO L93 Difference]: Finished difference Result 4463 states and 11078 transitions. [2022-02-11 01:11:55,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-11 01:11:55,477 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:11:55,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:55,483 INFO L225 Difference]: With dead ends: 4463 [2022-02-11 01:11:55,483 INFO L226 Difference]: Without dead ends: 4460 [2022-02-11 01:11:55,483 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=536, Invalid=4576, Unknown=0, NotChecked=0, Total=5112 [2022-02-11 01:11:55,483 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 144 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 502 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:55,484 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 224 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 611 Invalid, 0 Unknown, 502 Unchecked, 0.3s Time] [2022-02-11 01:11:55,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4460 states. [2022-02-11 01:11:55,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4460 to 3376. [2022-02-11 01:11:55,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3376 states, 3375 states have (on average 2.5374814814814814) internal successors, (8564), 3375 states have internal predecessors, (8564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:55,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 8564 transitions. [2022-02-11 01:11:55,524 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 8564 transitions. Word has length 30 [2022-02-11 01:11:55,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:55,524 INFO L470 AbstractCegarLoop]: Abstraction has 3376 states and 8564 transitions. [2022-02-11 01:11:55,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:55,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 8564 transitions. [2022-02-11 01:11:55,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:11:55,527 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:55,527 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:55,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-02-11 01:11:55,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:55,728 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:55,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:55,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1653603812, now seen corresponding path program 74 times [2022-02-11 01:11:55,728 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:55,728 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117497635] [2022-02-11 01:11:55,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:55,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:56,048 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:56,048 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:56,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117497635] [2022-02-11 01:11:56,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117497635] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:56,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169707018] [2022-02-11 01:11:56,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:11:56,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:56,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:56,050 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:11:56,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-11 01:11:56,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:11:56,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:56,073 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:11:56,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:56,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:56,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:56,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:56,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:56,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:56,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:56,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:56,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:56,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:56,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:56,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:56,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:56,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:56,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:56,472 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:11:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:56,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:56,890 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:11:56,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:11:57,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:57,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:57,412 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:57,412 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:57,412 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:57,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:57,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:57,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:57,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:57,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:57,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:57,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:57,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:57,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:57,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:57,416 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:11:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:57,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169707018] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:11:57,447 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:11:57,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:11:57,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935609362] [2022-02-11 01:11:57,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:11:57,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:11:57,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:11:57,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:11:57,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:11:57,448 INFO L87 Difference]: Start difference. First operand 3376 states and 8564 transitions. Second operand has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:59,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:59,564 INFO L93 Difference]: Finished difference Result 4650 states and 11509 transitions. [2022-02-11 01:11:59,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-11 01:11:59,564 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:11:59,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:59,570 INFO L225 Difference]: With dead ends: 4650 [2022-02-11 01:11:59,570 INFO L226 Difference]: Without dead ends: 4647 [2022-02-11 01:11:59,571 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1634 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=667, Invalid=5653, Unknown=0, NotChecked=0, Total=6320 [2022-02-11 01:11:59,571 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 132 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 234 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:59,571 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 224 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 639 Invalid, 0 Unknown, 234 Unchecked, 0.3s Time] [2022-02-11 01:11:59,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4647 states. [2022-02-11 01:11:59,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4647 to 3449. [2022-02-11 01:11:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3449 states, 3448 states have (on average 2.5336426914153134) internal successors, (8736), 3448 states have internal predecessors, (8736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:59,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 8736 transitions. [2022-02-11 01:11:59,641 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 8736 transitions. Word has length 30 [2022-02-11 01:11:59,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:59,641 INFO L470 AbstractCegarLoop]: Abstraction has 3449 states and 8736 transitions. [2022-02-11 01:11:59,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:59,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 8736 transitions. [2022-02-11 01:11:59,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:11:59,645 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:59,645 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:59,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-02-11 01:11:59,861 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,SelfDestructingSolverStorable78 [2022-02-11 01:11:59,862 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:11:59,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:59,862 INFO L85 PathProgramCache]: Analyzing trace with hash -822693660, now seen corresponding path program 75 times [2022-02-11 01:11:59,862 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:59,862 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144196754] [2022-02-11 01:11:59,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:59,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:12:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:00,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:12:00,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144196754] [2022-02-11 01:12:00,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144196754] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:12:00,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870837439] [2022-02-11 01:12:00,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:12:00,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:12:00,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:12:00,150 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:12:00,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-11 01:12:00,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-11 01:12:00,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:12:00,171 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 39 conjunts are in the unsatisfiable core [2022-02-11 01:12:00,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:12:01,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:01,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:01,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:01,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:01,050 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:01,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:01,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:01,087 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:12:01,088 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 69 treesize of output 127 [2022-02-11 01:12:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:02,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:12:03,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:03,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:03,511 INFO L353 Elim1Store]: treesize reduction 44, result has 83.1 percent of original size [2022-02-11 01:12:03,512 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 73 treesize of output 242 [2022-02-11 01:12:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:40,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870837439] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:12:40,054 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:12:40,054 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 39 [2022-02-11 01:12:40,054 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432699933] [2022-02-11 01:12:40,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:12:40,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-11 01:12:40,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:12:40,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-11 01:12:40,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1399, Unknown=0, NotChecked=0, Total=1560 [2022-02-11 01:12:40,055 INFO L87 Difference]: Start difference. First operand 3449 states and 8736 transitions. Second operand has 40 states, 40 states have (on average 1.825) internal successors, (73), 39 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:42,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:12:42,221 INFO L93 Difference]: Finished difference Result 4822 states and 11870 transitions. [2022-02-11 01:12:42,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-11 01:12:42,221 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.825) internal successors, (73), 39 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:12:42,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:12:42,227 INFO L225 Difference]: With dead ends: 4822 [2022-02-11 01:12:42,227 INFO L226 Difference]: Without dead ends: 4808 [2022-02-11 01:12:42,228 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 39 SyntacticMatches, 8 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1696 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=689, Invalid=5631, Unknown=0, NotChecked=0, Total=6320 [2022-02-11 01:12:42,228 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 118 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1203 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:12:42,228 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 248 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 330 Invalid, 0 Unknown, 1203 Unchecked, 0.2s Time] [2022-02-11 01:12:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4808 states. [2022-02-11 01:12:42,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 3627. [2022-02-11 01:12:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3626 states have (on average 2.532542746828461) internal successors, (9183), 3626 states have internal predecessors, (9183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:42,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 9183 transitions. [2022-02-11 01:12:42,275 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 9183 transitions. Word has length 30 [2022-02-11 01:12:42,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:12:42,276 INFO L470 AbstractCegarLoop]: Abstraction has 3627 states and 9183 transitions. [2022-02-11 01:12:42,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.825) internal successors, (73), 39 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:42,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 9183 transitions. [2022-02-11 01:12:42,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:12:42,279 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:12:42,279 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:12:42,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-02-11 01:12:42,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-02-11 01:12:42,480 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:12:42,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:12:42,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1881646240, now seen corresponding path program 76 times [2022-02-11 01:12:42,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:12:42,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196731663] [2022-02-11 01:12:42,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:12:42,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:12:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:12:42,765 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:42,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:12:42,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196731663] [2022-02-11 01:12:42,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196731663] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:12:42,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064187846] [2022-02-11 01:12:42,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:12:42,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:12:42,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:12:42,767 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:12:42,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-11 01:12:42,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:12:42,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:12:42,793 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:12:42,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:12:43,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:43,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:43,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:43,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:43,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:43,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:43,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:43,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:43,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:43,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:43,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:43,189 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:12:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:43,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:12:43,596 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:12:43,596 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:12:44,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:44,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:44,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:44,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:44,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:44,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:44,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:44,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:44,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:44,113 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:44,113 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:44,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:44,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:44,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:44,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:44,116 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:12:44,156 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:44,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064187846] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:12:44,156 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:12:44,156 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:12:44,156 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246662672] [2022-02-11 01:12:44,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:12:44,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:12:44,157 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:12:44,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:12:44,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:12:44,157 INFO L87 Difference]: Start difference. First operand 3627 states and 9183 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:46,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:12:46,244 INFO L93 Difference]: Finished difference Result 5062 states and 12550 transitions. [2022-02-11 01:12:46,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-11 01:12:46,244 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:12:46,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:12:46,250 INFO L225 Difference]: With dead ends: 5062 [2022-02-11 01:12:46,250 INFO L226 Difference]: Without dead ends: 5055 [2022-02-11 01:12:46,250 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1371 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=640, Invalid=4910, Unknown=0, NotChecked=0, Total=5550 [2022-02-11 01:12:46,250 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 176 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 394 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:12:46,250 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 184 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 662 Invalid, 0 Unknown, 394 Unchecked, 0.4s Time] [2022-02-11 01:12:46,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5055 states. [2022-02-11 01:12:46,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5055 to 3754. [2022-02-11 01:12:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3754 states, 3753 states have (on average 2.5329070077271516) internal successors, (9506), 3753 states have internal predecessors, (9506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:46,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 9506 transitions. [2022-02-11 01:12:46,298 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 9506 transitions. Word has length 30 [2022-02-11 01:12:46,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:12:46,298 INFO L470 AbstractCegarLoop]: Abstraction has 3754 states and 9506 transitions. [2022-02-11 01:12:46,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:46,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 9506 transitions. [2022-02-11 01:12:46,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:12:46,302 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:12:46,302 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:12:46,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-02-11 01:12:46,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:12:46,502 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:12:46,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:12:46,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1784027364, now seen corresponding path program 77 times [2022-02-11 01:12:46,502 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:12:46,503 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109256122] [2022-02-11 01:12:46,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:12:46,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:12:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:12:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:46,789 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:12:46,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109256122] [2022-02-11 01:12:46,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109256122] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:12:46,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542578340] [2022-02-11 01:12:46,789 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:12:46,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:12:46,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:12:46,790 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:12:46,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-11 01:12:46,811 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 01:12:46,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:12:46,812 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:12:46,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:12:47,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:47,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:47,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:47,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:47,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:47,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:47,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:47,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:47,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:47,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:47,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:47,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:47,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:47,209 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:12:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:47,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:12:47,622 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:12:47,622 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:12:47,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:47,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:47,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:47,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:47,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:47,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:47,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:47,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:47,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:47,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:47,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:47,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:47,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:47,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:47,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:47,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:12:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:47,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542578340] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:12:47,968 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:12:47,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:12:47,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046830347] [2022-02-11 01:12:47,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:12:47,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:12:47,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:12:47,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:12:47,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:12:47,969 INFO L87 Difference]: Start difference. First operand 3754 states and 9506 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:50,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:12:50,033 INFO L93 Difference]: Finished difference Result 4972 states and 12378 transitions. [2022-02-11 01:12:50,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-11 01:12:50,034 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:12:50,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:12:50,040 INFO L225 Difference]: With dead ends: 4972 [2022-02-11 01:12:50,040 INFO L226 Difference]: Without dead ends: 4965 [2022-02-11 01:12:50,041 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1323 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=633, Invalid=4769, Unknown=0, NotChecked=0, Total=5402 [2022-02-11 01:12:50,041 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 153 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 455 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:12:50,041 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 161 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 772 Invalid, 0 Unknown, 455 Unchecked, 0.4s Time] [2022-02-11 01:12:50,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4965 states. [2022-02-11 01:12:50,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4965 to 3846. [2022-02-11 01:12:50,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 3845 states have (on average 2.5362808842652798) internal successors, (9752), 3845 states have internal predecessors, (9752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:50,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 9752 transitions. [2022-02-11 01:12:50,096 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 9752 transitions. Word has length 30 [2022-02-11 01:12:50,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:12:50,096 INFO L470 AbstractCegarLoop]: Abstraction has 3846 states and 9752 transitions. [2022-02-11 01:12:50,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:50,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 9752 transitions. [2022-02-11 01:12:50,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:12:50,101 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:12:50,101 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:12:50,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-02-11 01:12:50,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:12:50,316 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:12:50,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:12:50,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1502641948, now seen corresponding path program 78 times [2022-02-11 01:12:50,317 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:12:50,317 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345472472] [2022-02-11 01:12:50,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:12:50,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:12:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:12:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:50,609 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:12:50,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345472472] [2022-02-11 01:12:50,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345472472] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:12:50,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055999719] [2022-02-11 01:12:50,609 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:12:50,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:12:50,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:12:50,610 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:12:50,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-11 01:12:50,632 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 01:12:50,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:12:50,633 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:12:50,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:12:51,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:51,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:51,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:51,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:51,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:51,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:51,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:51,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:51,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:51,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:51,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:51,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:51,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:51,065 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:12:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:51,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:12:51,494 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:12:51,494 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:12:51,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:51,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:51,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:51,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:51,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:51,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:51,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:51,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:51,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:51,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:51,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:51,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:51,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:51,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:51,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:51,999 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:12:52,030 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:52,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055999719] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:12:52,030 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:12:52,031 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:12:52,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993075948] [2022-02-11 01:12:52,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:12:52,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:12:52,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:12:52,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:12:52,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:12:52,031 INFO L87 Difference]: Start difference. First operand 3846 states and 9752 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:54,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:12:54,002 INFO L93 Difference]: Finished difference Result 5284 states and 13165 transitions. [2022-02-11 01:12:54,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-11 01:12:54,003 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:12:54,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:12:54,009 INFO L225 Difference]: With dead ends: 5284 [2022-02-11 01:12:54,009 INFO L226 Difference]: Without dead ends: 5277 [2022-02-11 01:12:54,010 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1271 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=614, Invalid=4642, Unknown=0, NotChecked=0, Total=5256 [2022-02-11 01:12:54,010 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 118 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 510 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:12:54,010 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 199 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 802 Invalid, 0 Unknown, 510 Unchecked, 0.4s Time] [2022-02-11 01:12:54,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5277 states. [2022-02-11 01:12:54,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5277 to 4055. [2022-02-11 01:12:54,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4055 states, 4054 states have (on average 2.5444005920078934) internal successors, (10315), 4054 states have internal predecessors, (10315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:54,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4055 states to 4055 states and 10315 transitions. [2022-02-11 01:12:54,060 INFO L78 Accepts]: Start accepts. Automaton has 4055 states and 10315 transitions. Word has length 30 [2022-02-11 01:12:54,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:12:54,060 INFO L470 AbstractCegarLoop]: Abstraction has 4055 states and 10315 transitions. [2022-02-11 01:12:54,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:54,060 INFO L276 IsEmpty]: Start isEmpty. Operand 4055 states and 10315 transitions. [2022-02-11 01:12:54,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:12:54,064 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:12:54,064 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:12:54,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-11 01:12:54,264 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,SelfDestructingSolverStorable82 [2022-02-11 01:12:54,264 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:12:54,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:12:54,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1774381284, now seen corresponding path program 79 times [2022-02-11 01:12:54,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:12:54,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71887563] [2022-02-11 01:12:54,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:12:54,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:12:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:12:54,549 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:54,550 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:12:54,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71887563] [2022-02-11 01:12:54,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71887563] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:12:54,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524063840] [2022-02-11 01:12:54,550 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:12:54,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:12:54,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:12:54,551 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:12:54,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-11 01:12:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:12:54,572 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:12:54,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:12:54,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:54,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:54,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:54,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:54,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:54,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:54,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:54,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:54,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:54,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:54,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:54,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:54,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:54,959 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:12:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:54,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:12:55,441 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:12:55,441 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:12:55,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:55,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:55,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:55,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:55,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:55,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:55,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:55,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:55,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:55,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:55,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:55,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:55,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:55,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:55,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:55,894 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:12:55,925 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:55,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524063840] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:12:55,926 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:12:55,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:12:55,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788767475] [2022-02-11 01:12:55,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:12:55,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:12:55,926 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:12:55,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:12:55,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:12:55,926 INFO L87 Difference]: Start difference. First operand 4055 states and 10315 transitions. Second operand has 32 states, 32 states have (on average 2.25) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:57,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:12:57,570 INFO L93 Difference]: Finished difference Result 5287 states and 13244 transitions. [2022-02-11 01:12:57,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-11 01:12:57,570 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.25) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:12:57,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:12:57,577 INFO L225 Difference]: With dead ends: 5287 [2022-02-11 01:12:57,577 INFO L226 Difference]: Without dead ends: 5280 [2022-02-11 01:12:57,577 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=509, Invalid=4047, Unknown=0, NotChecked=0, Total=4556 [2022-02-11 01:12:57,577 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 123 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 283 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:12:57,577 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 118 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 490 Invalid, 0 Unknown, 283 Unchecked, 0.3s Time] [2022-02-11 01:12:57,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5280 states. [2022-02-11 01:12:57,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5280 to 4097. [2022-02-11 01:12:57,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4097 states, 4096 states have (on average 2.5498046875) internal successors, (10444), 4096 states have internal predecessors, (10444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:57,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4097 states to 4097 states and 10444 transitions. [2022-02-11 01:12:57,632 INFO L78 Accepts]: Start accepts. Automaton has 4097 states and 10444 transitions. Word has length 30 [2022-02-11 01:12:57,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:12:57,632 INFO L470 AbstractCegarLoop]: Abstraction has 4097 states and 10444 transitions. [2022-02-11 01:12:57,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.25) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:57,632 INFO L276 IsEmpty]: Start isEmpty. Operand 4097 states and 10444 transitions. [2022-02-11 01:12:57,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:12:57,637 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:12:57,637 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:12:57,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-02-11 01:12:57,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:12:57,837 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:12:57,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:12:57,838 INFO L85 PathProgramCache]: Analyzing trace with hash -550984530, now seen corresponding path program 80 times [2022-02-11 01:12:57,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:12:57,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803677625] [2022-02-11 01:12:57,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:12:57,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:12:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:12:58,132 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:58,133 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:12:58,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803677625] [2022-02-11 01:12:58,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803677625] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:12:58,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207795428] [2022-02-11 01:12:58,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:12:58,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:12:58,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:12:58,144 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:12:58,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-11 01:12:58,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:12:58,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:12:58,166 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:12:58,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:12:58,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:58,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:58,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:58,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:58,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:58,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:58,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:58,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:58,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:58,551 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:58,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:58,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:58,552 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:58,552 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:58,553 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:12:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:58,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:12:58,970 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:12:58,971 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:12:59,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:59,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:59,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:59,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:59,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:59,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:59,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:59,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:59,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:59,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:59,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:59,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:59,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:59,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:59,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:59,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:12:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:59,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207795428] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:12:59,378 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:12:59,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:12:59,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053333736] [2022-02-11 01:12:59,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:12:59,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:12:59,378 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:12:59,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:12:59,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:12:59,379 INFO L87 Difference]: Start difference. First operand 4097 states and 10444 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:01,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:13:01,715 INFO L93 Difference]: Finished difference Result 5489 states and 13623 transitions. [2022-02-11 01:13:01,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-11 01:13:01,716 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:13:01,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:13:01,722 INFO L225 Difference]: With dead ends: 5489 [2022-02-11 01:13:01,722 INFO L226 Difference]: Without dead ends: 5400 [2022-02-11 01:13:01,723 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1553 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=685, Invalid=5321, Unknown=0, NotChecked=0, Total=6006 [2022-02-11 01:13:01,723 INFO L934 BasicCegarLoop]: 25 mSDtfsCounter, 206 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 311 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:13:01,723 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 374 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1062 Invalid, 0 Unknown, 311 Unchecked, 0.5s Time] [2022-02-11 01:13:01,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5400 states. [2022-02-11 01:13:01,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5400 to 4287. [2022-02-11 01:13:01,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4287 states, 4286 states have (on average 2.536164255716286) internal successors, (10870), 4286 states have internal predecessors, (10870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:01,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4287 states to 4287 states and 10870 transitions. [2022-02-11 01:13:01,788 INFO L78 Accepts]: Start accepts. Automaton has 4287 states and 10870 transitions. Word has length 30 [2022-02-11 01:13:01,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:13:01,788 INFO L470 AbstractCegarLoop]: Abstraction has 4287 states and 10870 transitions. [2022-02-11 01:13:01,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:01,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4287 states and 10870 transitions. [2022-02-11 01:13:01,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:13:01,793 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:13:01,793 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:13:01,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-02-11 01:13:01,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:13:01,993 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:13:01,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:13:01,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1068530254, now seen corresponding path program 81 times [2022-02-11 01:13:01,994 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:13:01,994 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235018847] [2022-02-11 01:13:01,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:13:01,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:13:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:13:02,268 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:02,268 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:13:02,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235018847] [2022-02-11 01:13:02,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235018847] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:13:02,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862553848] [2022-02-11 01:13:02,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:13:02,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:13:02,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:13:02,269 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:13:02,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-11 01:13:02,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-11 01:13:02,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:13:02,291 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 39 conjunts are in the unsatisfiable core [2022-02-11 01:13:02,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:13:03,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:03,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:03,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:03,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:03,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:03,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:03,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:03,129 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:13:03,129 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 69 treesize of output 127 [2022-02-11 01:13:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:03,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:13:04,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:04,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:04,965 INFO L353 Elim1Store]: treesize reduction 44, result has 83.1 percent of original size [2022-02-11 01:13:04,965 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 73 treesize of output 242 [2022-02-11 01:13:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:35,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862553848] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:13:35,611 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:13:35,611 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 39 [2022-02-11 01:13:35,611 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868650145] [2022-02-11 01:13:35,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:13:35,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-11 01:13:35,611 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:13:35,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-11 01:13:35,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2022-02-11 01:13:35,612 INFO L87 Difference]: Start difference. First operand 4287 states and 10870 transitions. Second operand has 40 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:37,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:13:37,657 INFO L93 Difference]: Finished difference Result 5896 states and 14560 transitions. [2022-02-11 01:13:37,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-11 01:13:37,658 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:13:37,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:13:37,665 INFO L225 Difference]: With dead ends: 5896 [2022-02-11 01:13:37,666 INFO L226 Difference]: Without dead ends: 5880 [2022-02-11 01:13:37,666 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 37 SyntacticMatches, 12 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1491 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=566, Invalid=4690, Unknown=0, NotChecked=0, Total=5256 [2022-02-11 01:13:37,666 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 142 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 485 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:13:37,666 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 168 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 314 Invalid, 0 Unknown, 485 Unchecked, 0.2s Time] [2022-02-11 01:13:37,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2022-02-11 01:13:37,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 4291. [2022-02-11 01:13:37,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4291 states, 4290 states have (on average 2.5356643356643356) internal successors, (10878), 4290 states have internal predecessors, (10878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:37,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4291 states to 4291 states and 10878 transitions. [2022-02-11 01:13:37,727 INFO L78 Accepts]: Start accepts. Automaton has 4291 states and 10878 transitions. Word has length 30 [2022-02-11 01:13:37,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:13:37,727 INFO L470 AbstractCegarLoop]: Abstraction has 4291 states and 10878 transitions. [2022-02-11 01:13:37,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:37,727 INFO L276 IsEmpty]: Start isEmpty. Operand 4291 states and 10878 transitions. [2022-02-11 01:13:37,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:13:37,732 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:13:37,732 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:13:37,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-02-11 01:13:37,943 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,SelfDestructingSolverStorable85 [2022-02-11 01:13:37,943 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:13:37,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:13:37,944 INFO L85 PathProgramCache]: Analyzing trace with hash -2127482834, now seen corresponding path program 82 times [2022-02-11 01:13:37,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:13:37,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373220496] [2022-02-11 01:13:37,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:13:37,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:13:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:13:38,272 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:38,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:13:38,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373220496] [2022-02-11 01:13:38,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373220496] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:13:38,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488544070] [2022-02-11 01:13:38,272 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:13:38,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:13:38,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:13:38,279 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:13:38,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-11 01:13:38,301 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:13:38,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:13:38,302 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:13:38,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:13:38,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:38,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:38,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:38,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:38,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:38,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:38,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:38,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:38,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:38,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:38,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:38,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:38,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:38,721 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:13:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:38,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:13:39,143 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:13:39,143 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:13:39,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:39,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:39,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:39,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:39,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:39,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:39,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:39,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:39,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:39,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:39,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:39,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:39,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:39,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:39,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:39,503 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:13:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:39,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488544070] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:13:39,536 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:13:39,536 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:13:39,536 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570836797] [2022-02-11 01:13:39,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:13:39,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:13:39,537 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:13:39,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:13:39,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:13:39,537 INFO L87 Difference]: Start difference. First operand 4291 states and 10878 transitions. Second operand has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:42,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:13:42,118 INFO L93 Difference]: Finished difference Result 5552 states and 13751 transitions. [2022-02-11 01:13:42,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-11 01:13:42,118 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:13:42,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:13:42,125 INFO L225 Difference]: With dead ends: 5552 [2022-02-11 01:13:42,125 INFO L226 Difference]: Without dead ends: 5453 [2022-02-11 01:13:42,126 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=714, Invalid=5448, Unknown=0, NotChecked=0, Total=6162 [2022-02-11 01:13:42,126 INFO L934 BasicCegarLoop]: 25 mSDtfsCounter, 191 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 550 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:13:42,126 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 378 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1213 Invalid, 0 Unknown, 550 Unchecked, 0.6s Time] [2022-02-11 01:13:42,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5453 states. [2022-02-11 01:13:42,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5453 to 4263. [2022-02-11 01:13:42,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4263 states, 4262 states have (on average 2.538479587048334) internal successors, (10819), 4262 states have internal predecessors, (10819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:42,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4263 states to 4263 states and 10819 transitions. [2022-02-11 01:13:42,198 INFO L78 Accepts]: Start accepts. Automaton has 4263 states and 10819 transitions. Word has length 30 [2022-02-11 01:13:42,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:13:42,199 INFO L470 AbstractCegarLoop]: Abstraction has 4263 states and 10819 transitions. [2022-02-11 01:13:42,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:42,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4263 states and 10819 transitions. [2022-02-11 01:13:42,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:13:42,204 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:13:42,204 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:13:42,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-02-11 01:13:42,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:13:42,415 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:13:42,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:13:42,415 INFO L85 PathProgramCache]: Analyzing trace with hash 938367594, now seen corresponding path program 83 times [2022-02-11 01:13:42,415 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:13:42,415 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815753123] [2022-02-11 01:13:42,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:13:42,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:13:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:13:42,706 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:42,706 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:13:42,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815753123] [2022-02-11 01:13:42,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815753123] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:13:42,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561020830] [2022-02-11 01:13:42,706 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:13:42,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:13:42,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:13:42,707 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:13:42,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-11 01:13:42,727 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 01:13:42,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:13:42,728 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:13:42,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:13:43,116 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:43,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:43,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:43,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:43,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:43,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:43,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:43,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:43,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:43,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:43,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:43,123 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:13:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:43,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:13:43,552 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:13:43,552 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:13:43,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:43,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:43,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:43,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:43,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:43,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:43,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:43,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:43,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:43,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:43,971 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:43,971 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:43,971 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:43,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:43,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:43,973 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:13:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:44,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561020830] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:13:44,005 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:13:44,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:13:44,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439459750] [2022-02-11 01:13:44,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:13:44,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:13:44,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:13:44,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:13:44,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:13:44,006 INFO L87 Difference]: Start difference. First operand 4263 states and 10819 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:46,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:13:46,461 INFO L93 Difference]: Finished difference Result 5582 states and 13851 transitions. [2022-02-11 01:13:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-11 01:13:46,461 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:13:46,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:13:46,468 INFO L225 Difference]: With dead ends: 5582 [2022-02-11 01:13:46,468 INFO L226 Difference]: Without dead ends: 5513 [2022-02-11 01:13:46,469 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=748, Invalid=5104, Unknown=0, NotChecked=0, Total=5852 [2022-02-11 01:13:46,469 INFO L934 BasicCegarLoop]: 21 mSDtfsCounter, 243 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 314 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:13:46,469 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 301 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1168 Invalid, 0 Unknown, 314 Unchecked, 0.6s Time] [2022-02-11 01:13:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5513 states. [2022-02-11 01:13:46,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5513 to 4407. [2022-02-11 01:13:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4407 states, 4406 states have (on average 2.5304130730821606) internal successors, (11149), 4406 states have internal predecessors, (11149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4407 states to 4407 states and 11149 transitions. [2022-02-11 01:13:46,522 INFO L78 Accepts]: Start accepts. Automaton has 4407 states and 11149 transitions. Word has length 30 [2022-02-11 01:13:46,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:13:46,522 INFO L470 AbstractCegarLoop]: Abstraction has 4407 states and 11149 transitions. [2022-02-11 01:13:46,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:46,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4407 states and 11149 transitions. [2022-02-11 01:13:46,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:13:46,526 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:13:46,526 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:13:46,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-02-11 01:13:46,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:13:46,727 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:13:46,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:13:46,727 INFO L85 PathProgramCache]: Analyzing trace with hash 420821870, now seen corresponding path program 84 times [2022-02-11 01:13:46,727 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:13:46,727 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985068765] [2022-02-11 01:13:46,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:13:46,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:13:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:13:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:47,009 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:13:47,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985068765] [2022-02-11 01:13:47,009 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985068765] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:13:47,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759814020] [2022-02-11 01:13:47,009 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:13:47,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:13:47,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:13:47,010 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:13:47,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-11 01:13:47,029 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 01:13:47,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:13:47,030 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:13:47,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:13:47,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:47,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:47,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:47,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:47,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:47,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:47,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:47,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:47,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:47,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:47,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:47,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:47,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:47,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:13:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:47,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:13:47,854 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:13:47,854 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:13:48,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:48,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:48,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:48,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:48,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:48,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:48,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:48,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:48,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:48,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:48,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:48,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:48,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:48,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:48,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:48,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:13:48,237 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:48,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759814020] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:13:48,238 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:13:48,238 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:13:48,238 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885639754] [2022-02-11 01:13:48,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:13:48,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:13:48,238 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:13:48,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:13:48,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:13:48,238 INFO L87 Difference]: Start difference. First operand 4407 states and 11149 transitions. Second operand has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:13:50,598 INFO L93 Difference]: Finished difference Result 5498 states and 13608 transitions. [2022-02-11 01:13:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-11 01:13:50,598 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:13:50,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:13:50,605 INFO L225 Difference]: With dead ends: 5498 [2022-02-11 01:13:50,605 INFO L226 Difference]: Without dead ends: 5475 [2022-02-11 01:13:50,606 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=727, Invalid=4823, Unknown=0, NotChecked=0, Total=5550 [2022-02-11 01:13:50,606 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 199 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 281 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:13:50,606 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 195 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1171 Invalid, 0 Unknown, 281 Unchecked, 0.6s Time] [2022-02-11 01:13:50,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5475 states. [2022-02-11 01:13:50,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5475 to 4391. [2022-02-11 01:13:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 4390 states have (on average 2.5300683371298405) internal successors, (11107), 4390 states have internal predecessors, (11107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:50,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 11107 transitions. [2022-02-11 01:13:50,658 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 11107 transitions. Word has length 30 [2022-02-11 01:13:50,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:13:50,658 INFO L470 AbstractCegarLoop]: Abstraction has 4391 states and 11107 transitions. [2022-02-11 01:13:50,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:50,658 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 11107 transitions. [2022-02-11 01:13:50,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:13:50,663 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:13:50,663 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:13:50,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-02-11 01:13:50,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-02-11 01:13:50,878 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:13:50,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:13:50,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1854127390, now seen corresponding path program 85 times [2022-02-11 01:13:50,878 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:13:50,878 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501376038] [2022-02-11 01:13:50,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:13:50,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:13:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:13:51,187 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:51,187 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:13:51,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501376038] [2022-02-11 01:13:51,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501376038] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:13:51,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306979348] [2022-02-11 01:13:51,187 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:13:51,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:13:51,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:13:51,188 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:13:51,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-11 01:13:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:13:51,208 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:13:51,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:13:51,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:51,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:51,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:51,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:51,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:51,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:51,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:51,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:51,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:51,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:51,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:51,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:51,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:51,582 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:13:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:51,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:13:52,005 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:13:52,005 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:13:52,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:52,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:52,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:52,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:52,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:52,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:52,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:52,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:52,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:52,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:52,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:52,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:52,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:52,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:52,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:52,592 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:13:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:52,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306979348] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:13:52,624 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:13:52,624 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:13:52,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173253874] [2022-02-11 01:13:52,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:13:52,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:13:52,625 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:13:52,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:13:52,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=879, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:13:52,625 INFO L87 Difference]: Start difference. First operand 4391 states and 11107 transitions. Second operand has 32 states, 32 states have (on average 2.25) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:55,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:13:55,693 INFO L93 Difference]: Finished difference Result 5992 states and 14766 transitions. [2022-02-11 01:13:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-11 01:13:55,693 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.25) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:13:55,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:13:55,701 INFO L225 Difference]: With dead ends: 5992 [2022-02-11 01:13:55,701 INFO L226 Difference]: Without dead ends: 5976 [2022-02-11 01:13:55,701 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1973 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=829, Invalid=6481, Unknown=0, NotChecked=0, Total=7310 [2022-02-11 01:13:55,701 INFO L934 BasicCegarLoop]: 20 mSDtfsCounter, 237 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 01:13:55,702 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 302 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1730 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 01:13:55,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5976 states. [2022-02-11 01:13:55,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5976 to 4474. [2022-02-11 01:13:55,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4473 states have (on average 2.5309635591325734) internal successors, (11321), 4473 states have internal predecessors, (11321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:55,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 11321 transitions. [2022-02-11 01:13:55,759 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 11321 transitions. Word has length 30 [2022-02-11 01:13:55,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:13:55,759 INFO L470 AbstractCegarLoop]: Abstraction has 4474 states and 11321 transitions. [2022-02-11 01:13:55,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.25) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:55,760 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 11321 transitions. [2022-02-11 01:13:55,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:13:55,764 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:13:55,764 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:13:55,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-02-11 01:13:55,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:13:55,965 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:13:55,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:13:55,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1499462230, now seen corresponding path program 86 times [2022-02-11 01:13:55,965 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:13:55,965 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805417031] [2022-02-11 01:13:55,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:13:55,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:13:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:13:56,252 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:13:56,252 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:13:56,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805417031] [2022-02-11 01:13:56,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805417031] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:13:56,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166007837] [2022-02-11 01:13:56,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:13:56,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:13:56,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:13:56,253 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:13:56,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-11 01:13:56,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:13:56,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:13:56,274 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:13:56,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:13:56,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:56,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:56,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:56,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:56,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:56,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:56,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:56,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:56,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:56,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:56,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:56,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:56,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:56,658 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:13:56,682 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:56,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:13:57,058 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:13:57,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:13:57,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:57,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:57,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:57,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:57,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:57,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:57,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:57,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:57,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:57,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:57,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:57,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:57,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:57,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:57,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:57,376 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:13:57,407 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:57,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166007837] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:13:57,407 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:13:57,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 30 [2022-02-11 01:13:57,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301631997] [2022-02-11 01:13:57,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:13:57,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-11 01:13:57,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:13:57,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-11 01:13:57,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2022-02-11 01:13:57,408 INFO L87 Difference]: Start difference. First operand 4474 states and 11321 transitions. Second operand has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:59,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:13:59,663 INFO L93 Difference]: Finished difference Result 6009 states and 14790 transitions. [2022-02-11 01:13:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-11 01:13:59,663 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:13:59,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:13:59,670 INFO L225 Difference]: With dead ends: 6009 [2022-02-11 01:13:59,670 INFO L226 Difference]: Without dead ends: 5943 [2022-02-11 01:13:59,670 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 39 SyntacticMatches, 7 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=761, Invalid=4641, Unknown=0, NotChecked=0, Total=5402 [2022-02-11 01:13:59,671 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 219 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 177 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:13:59,671 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 233 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 966 Invalid, 0 Unknown, 177 Unchecked, 0.5s Time] [2022-02-11 01:13:59,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5943 states. [2022-02-11 01:13:59,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5943 to 4546. [2022-02-11 01:13:59,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4546 states, 4545 states have (on average 2.5256325632563255) internal successors, (11479), 4545 states have internal predecessors, (11479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:59,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4546 states to 4546 states and 11479 transitions. [2022-02-11 01:13:59,724 INFO L78 Accepts]: Start accepts. Automaton has 4546 states and 11479 transitions. Word has length 30 [2022-02-11 01:13:59,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:13:59,724 INFO L470 AbstractCegarLoop]: Abstraction has 4546 states and 11479 transitions. [2022-02-11 01:13:59,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:59,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4546 states and 11479 transitions. [2022-02-11 01:13:59,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:13:59,728 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:13:59,728 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:13:59,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-02-11 01:13:59,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:13:59,928 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:13:59,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:13:59,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2043738198, now seen corresponding path program 87 times [2022-02-11 01:13:59,929 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:13:59,929 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934044489] [2022-02-11 01:13:59,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:13:59,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:13:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:14:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:14:00,141 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:14:00,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934044489] [2022-02-11 01:14:00,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934044489] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:14:00,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623163682] [2022-02-11 01:14:00,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:14:00,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:14:00,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:14:00,142 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:14:00,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-11 01:14:00,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-11 01:14:00,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:14:00,164 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-11 01:14:00,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:14:00,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:00,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:00,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:00,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:00,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:00,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:00,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:00,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:00,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:00,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:00,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:00,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:00,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:00,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:00,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:00,732 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:14:00,732 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 77 treesize of output 119 [2022-02-11 01:14:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:14:00,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:14:01,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:01,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:01,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:01,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:01,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:01,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:01,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:01,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:01,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:01,648 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:14:01,649 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 19 case distinctions, treesize of input 78 treesize of output 223 [2022-02-11 01:14:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:14:11,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623163682] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:14:11,809 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:14:11,809 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 40 [2022-02-11 01:14:11,809 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151065867] [2022-02-11 01:14:11,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:14:11,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-11 01:14:11,809 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:14:11,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-11 01:14:11,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 01:14:11,810 INFO L87 Difference]: Start difference. First operand 4546 states and 11479 transitions. Second operand has 41 states, 41 states have (on average 1.829268292682927) internal successors, (75), 40 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:14:19,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:14:19,929 INFO L93 Difference]: Finished difference Result 6617 states and 15855 transitions. [2022-02-11 01:14:19,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-11 01:14:19,929 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.829268292682927) internal successors, (75), 40 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:14:19,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:14:19,936 INFO L225 Difference]: With dead ends: 6617 [2022-02-11 01:14:19,936 INFO L226 Difference]: Without dead ends: 6583 [2022-02-11 01:14:19,937 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 31 SyntacticMatches, 8 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6498 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=2782, Invalid=16678, Unknown=0, NotChecked=0, Total=19460 [2022-02-11 01:14:19,937 INFO L934 BasicCegarLoop]: 33 mSDtfsCounter, 574 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 872 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:14:19,937 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 502 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1378 Invalid, 0 Unknown, 872 Unchecked, 0.8s Time] [2022-02-11 01:14:19,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2022-02-11 01:14:19,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 4542. [2022-02-11 01:14:19,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4542 states, 4541 states have (on average 2.522131689055274) internal successors, (11453), 4541 states have internal predecessors, (11453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:14:20,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4542 states to 4542 states and 11453 transitions. [2022-02-11 01:14:20,006 INFO L78 Accepts]: Start accepts. Automaton has 4542 states and 11453 transitions. Word has length 30 [2022-02-11 01:14:20,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:14:20,006 INFO L470 AbstractCegarLoop]: Abstraction has 4542 states and 11453 transitions. [2022-02-11 01:14:20,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.829268292682927) internal successors, (75), 40 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:14:20,006 INFO L276 IsEmpty]: Start isEmpty. Operand 4542 states and 11453 transitions. [2022-02-11 01:14:20,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:14:20,010 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:14:20,010 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:14:20,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-02-11 01:14:20,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:14:20,210 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:14:20,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:14:20,211 INFO L85 PathProgramCache]: Analyzing trace with hash -761180122, now seen corresponding path program 88 times [2022-02-11 01:14:20,211 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:14:20,211 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180907132] [2022-02-11 01:14:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:14:20,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:14:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:14:20,429 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:14:20,429 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:14:20,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180907132] [2022-02-11 01:14:20,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180907132] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:14:20,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414534193] [2022-02-11 01:14:20,429 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:14:20,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:14:20,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:14:20,430 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:14:20,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-11 01:14:20,451 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:14:20,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:14:20,452 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:14:20,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:14:20,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:20,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:20,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:20,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:20,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:20,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:20,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:20,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:20,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:20,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:20,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:20,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:20,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:20,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:14:20,854 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:14:20,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:14:21,204 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:14:21,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 40 treesize of output 165 [2022-02-11 01:14:21,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:21,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:21,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:21,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:21,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:21,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:21,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:21,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:21,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:21,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:21,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:21,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:21,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:21,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:21,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:21,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:14:21,750 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:14:21,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414534193] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:14:21,750 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:14:21,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 29 [2022-02-11 01:14:21,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39422349] [2022-02-11 01:14:21,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:14:21,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:14:21,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:14:21,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:14:21,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:14:21,751 INFO L87 Difference]: Start difference. First operand 4542 states and 11453 transitions. Second operand has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:14:23,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:14:23,794 INFO L93 Difference]: Finished difference Result 5404 states and 13338 transitions. [2022-02-11 01:14:23,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-11 01:14:23,794 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:14:23,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:14:23,801 INFO L225 Difference]: With dead ends: 5404 [2022-02-11 01:14:23,801 INFO L226 Difference]: Without dead ends: 5348 [2022-02-11 01:14:23,802 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 40 SyntacticMatches, 9 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=732, Invalid=4670, Unknown=0, NotChecked=0, Total=5402 [2022-02-11 01:14:23,802 INFO L934 BasicCegarLoop]: 31 mSDtfsCounter, 278 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:14:23,802 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 408 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1221 Invalid, 0 Unknown, 130 Unchecked, 0.6s Time] [2022-02-11 01:14:23,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2022-02-11 01:14:23,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 4711. [2022-02-11 01:14:23,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4711 states, 4710 states have (on average 2.5067940552016985) internal successors, (11807), 4710 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:14:23,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4711 states to 4711 states and 11807 transitions. [2022-02-11 01:14:23,867 INFO L78 Accepts]: Start accepts. Automaton has 4711 states and 11807 transitions. Word has length 30 [2022-02-11 01:14:23,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:14:23,867 INFO L470 AbstractCegarLoop]: Abstraction has 4711 states and 11807 transitions. [2022-02-11 01:14:23,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:14:23,868 INFO L276 IsEmpty]: Start isEmpty. Operand 4711 states and 11807 transitions. [2022-02-11 01:14:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:14:23,872 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:14:23,872 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:14:23,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-02-11 01:14:24,072 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,SelfDestructingSolverStorable92 [2022-02-11 01:14:24,073 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:14:24,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:14:24,073 INFO L85 PathProgramCache]: Analyzing trace with hash 295507822, now seen corresponding path program 89 times [2022-02-11 01:14:24,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:14:24,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238719605] [2022-02-11 01:14:24,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:14:24,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:14:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:14:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:14:24,300 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:14:24,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238719605] [2022-02-11 01:14:24,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238719605] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:14:24,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238272384] [2022-02-11 01:14:24,301 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:14:24,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:14:24,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:14:24,302 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:14:24,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-11 01:14:24,322 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-11 01:14:24,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:14:24,323 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:14:24,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:14:24,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:24,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:24,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:24,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:24,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:24,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:24,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:24,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:24,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:24,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:24,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:24,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:24,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:14:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:14:24,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:14:25,074 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:14:25,074 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 40 treesize of output 165 [2022-02-11 01:14:25,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:25,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:25,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:25,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:25,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:25,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:25,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:25,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:25,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:25,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:25,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:25,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:25,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:25,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:25,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:25,454 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:14:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:14:25,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238272384] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:14:25,491 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:14:25,491 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 29 [2022-02-11 01:14:25,491 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372310903] [2022-02-11 01:14:25,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:14:25,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:14:25,491 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:14:25,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:14:25,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:14:25,492 INFO L87 Difference]: Start difference. First operand 4711 states and 11807 transitions. Second operand has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:14:27,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:14:27,345 INFO L93 Difference]: Finished difference Result 5352 states and 13141 transitions. [2022-02-11 01:14:27,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-11 01:14:27,346 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:14:27,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:14:27,353 INFO L225 Difference]: With dead ends: 5352 [2022-02-11 01:14:27,354 INFO L226 Difference]: Without dead ends: 5345 [2022-02-11 01:14:27,354 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 40 SyntacticMatches, 9 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1417 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=642, Invalid=3914, Unknown=0, NotChecked=0, Total=4556 [2022-02-11 01:14:27,354 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 241 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:14:27,354 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 297 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1154 Invalid, 0 Unknown, 70 Unchecked, 0.6s Time] [2022-02-11 01:14:27,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2022-02-11 01:14:27,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 4709. [2022-02-11 01:14:27,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4709 states, 4708 states have (on average 2.5072217502124046) internal successors, (11804), 4708 states have internal predecessors, (11804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:14:27,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4709 states to 4709 states and 11804 transitions. [2022-02-11 01:14:27,431 INFO L78 Accepts]: Start accepts. Automaton has 4709 states and 11804 transitions. Word has length 30 [2022-02-11 01:14:27,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:14:27,431 INFO L470 AbstractCegarLoop]: Abstraction has 4709 states and 11804 transitions. [2022-02-11 01:14:27,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:14:27,431 INFO L276 IsEmpty]: Start isEmpty. Operand 4709 states and 11804 transitions. [2022-02-11 01:14:27,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:14:27,436 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:14:27,436 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:14:27,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-02-11 01:14:27,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:14:27,637 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:14:27,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:14:27,637 INFO L85 PathProgramCache]: Analyzing trace with hash 181205862, now seen corresponding path program 90 times [2022-02-11 01:14:27,637 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:14:27,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059321263] [2022-02-11 01:14:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:14:27,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:14:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:14:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:14:27,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:14:27,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059321263] [2022-02-11 01:14:27,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059321263] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:14:27,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789594870] [2022-02-11 01:14:27,884 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:14:27,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:14:27,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:14:27,885 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:14:27,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-11 01:14:27,906 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-11 01:14:27,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:14:27,906 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 39 conjunts are in the unsatisfiable core [2022-02-11 01:14:27,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:14:28,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:28,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:28,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:28,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:28,399 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:28,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:14:28,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:28,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:28,425 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:14:28,426 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 65 treesize of output 75 [2022-02-11 01:14:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:14:28,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:14:30,293 INFO L353 Elim1Store]: treesize reduction 76, result has 73.0 percent of original size [2022-02-11 01:14:30,293 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 74 treesize of output 231 [2022-02-11 01:15:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:15:15,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789594870] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:15:15,058 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:15:15,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 40 [2022-02-11 01:15:15,058 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008401741] [2022-02-11 01:15:15,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:15:15,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-11 01:15:15,058 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:15:15,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-11 01:15:15,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 01:15:15,059 INFO L87 Difference]: Start difference. First operand 4709 states and 11804 transitions. Second operand has 41 states, 41 states have (on average 1.829268292682927) internal successors, (75), 40 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:15:23,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:15:23,165 INFO L93 Difference]: Finished difference Result 9227 states and 22664 transitions. [2022-02-11 01:15:23,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-02-11 01:15:23,166 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.829268292682927) internal successors, (75), 40 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:15:23,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:15:23,179 INFO L225 Difference]: With dead ends: 9227 [2022-02-11 01:15:23,179 INFO L226 Difference]: Without dead ends: 9183 [2022-02-11 01:15:23,180 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 33 SyntacticMatches, 20 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7482 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=2589, Invalid=15771, Unknown=0, NotChecked=0, Total=18360 [2022-02-11 01:15:23,180 INFO L934 BasicCegarLoop]: 21 mSDtfsCounter, 400 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 2847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1804 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:15:23,180 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 352 Invalid, 2847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 922 Invalid, 0 Unknown, 1804 Unchecked, 0.5s Time] [2022-02-11 01:15:23,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9183 states. [2022-02-11 01:15:23,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9183 to 6044. [2022-02-11 01:15:23,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6044 states, 6043 states have (on average 2.513983120966407) internal successors, (15192), 6043 states have internal predecessors, (15192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:15:23,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6044 states to 6044 states and 15192 transitions. [2022-02-11 01:15:23,289 INFO L78 Accepts]: Start accepts. Automaton has 6044 states and 15192 transitions. Word has length 30 [2022-02-11 01:15:23,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:15:23,289 INFO L470 AbstractCegarLoop]: Abstraction has 6044 states and 15192 transitions. [2022-02-11 01:15:23,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.829268292682927) internal successors, (75), 40 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:15:23,289 INFO L276 IsEmpty]: Start isEmpty. Operand 6044 states and 15192 transitions. [2022-02-11 01:15:23,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:15:23,295 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:15:23,295 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:15:23,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-02-11 01:15:23,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:15:23,496 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:15:23,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:15:23,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1549563870, now seen corresponding path program 91 times [2022-02-11 01:15:23,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:15:23,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728848707] [2022-02-11 01:15:23,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:15:23,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:15:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:15:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:15:23,748 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:15:23,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728848707] [2022-02-11 01:15:23,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728848707] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:15:23,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094913619] [2022-02-11 01:15:23,748 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:15:23,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:15:23,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:15:23,749 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:15:23,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-11 01:15:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:15:23,772 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:15:23,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:15:24,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:24,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:24,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:24,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:24,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:24,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:24,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:24,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:24,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:24,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:24,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:24,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:24,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:24,128 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:15:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:15:24,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:15:24,532 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:15:24,532 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:15:25,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:25,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:25,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:25,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:25,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:25,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:25,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:25,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:25,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:25,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:25,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:25,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:25,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:25,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:25,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:25,078 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:15:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:15:25,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094913619] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:15:25,113 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:15:25,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 30 [2022-02-11 01:15:25,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838861145] [2022-02-11 01:15:25,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:15:25,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-11 01:15:25,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:15:25,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-11 01:15:25,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=823, Unknown=0, NotChecked=0, Total=930 [2022-02-11 01:15:25,113 INFO L87 Difference]: Start difference. First operand 6044 states and 15192 transitions. Second operand has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:15:27,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:15:27,997 INFO L93 Difference]: Finished difference Result 7098 states and 17655 transitions. [2022-02-11 01:15:27,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-11 01:15:27,997 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:15:27,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:15:28,008 INFO L225 Difference]: With dead ends: 7098 [2022-02-11 01:15:28,008 INFO L226 Difference]: Without dead ends: 7052 [2022-02-11 01:15:28,009 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2046 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=931, Invalid=6209, Unknown=0, NotChecked=0, Total=7140 [2022-02-11 01:15:28,009 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 277 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:15:28,009 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 340 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 01:15:28,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7052 states. [2022-02-11 01:15:28,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7052 to 5783. [2022-02-11 01:15:28,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5783 states, 5782 states have (on average 2.5051885160844) internal successors, (14485), 5782 states have internal predecessors, (14485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:15:28,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5783 states to 5783 states and 14485 transitions. [2022-02-11 01:15:28,091 INFO L78 Accepts]: Start accepts. Automaton has 5783 states and 14485 transitions. Word has length 30 [2022-02-11 01:15:28,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:15:28,091 INFO L470 AbstractCegarLoop]: Abstraction has 5783 states and 14485 transitions. [2022-02-11 01:15:28,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:15:28,092 INFO L276 IsEmpty]: Start isEmpty. Operand 5783 states and 14485 transitions. [2022-02-11 01:15:28,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:15:28,098 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:15:28,098 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:15:28,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-02-11 01:15:28,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:15:28,298 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:15:28,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:15:28,298 INFO L85 PathProgramCache]: Analyzing trace with hash 846912614, now seen corresponding path program 92 times [2022-02-11 01:15:28,299 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:15:28,299 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243692832] [2022-02-11 01:15:28,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:15:28,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:15:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:15:28,553 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:15:28,553 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:15:28,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243692832] [2022-02-11 01:15:28,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243692832] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:15:28,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468043746] [2022-02-11 01:15:28,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:15:28,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:15:28,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:15:28,555 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:15:28,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-11 01:15:28,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:15:28,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:15:28,576 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:15:28,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:15:28,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:28,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:28,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:28,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:28,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:28,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:28,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:28,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:28,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:28,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:28,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:28,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:28,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:28,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:28,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:28,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:15:28,953 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:15:28,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:15:29,338 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:15:29,338 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:15:29,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:29,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:29,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:29,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:29,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:29,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:29,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:29,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:29,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:29,684 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:29,684 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:29,684 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:29,684 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:29,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:29,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:29,686 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:15:29,721 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:15:29,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468043746] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:15:29,721 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:15:29,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 30 [2022-02-11 01:15:29,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432596916] [2022-02-11 01:15:29,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:15:29,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-11 01:15:29,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:15:29,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-11 01:15:29,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2022-02-11 01:15:29,722 INFO L87 Difference]: Start difference. First operand 5783 states and 14485 transitions. Second operand has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:15:32,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:15:32,553 INFO L93 Difference]: Finished difference Result 7282 states and 18026 transitions. [2022-02-11 01:15:32,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-11 01:15:32,554 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:15:32,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:15:32,564 INFO L225 Difference]: With dead ends: 7282 [2022-02-11 01:15:32,564 INFO L226 Difference]: Without dead ends: 7252 [2022-02-11 01:15:32,564 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1740 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=806, Invalid=5674, Unknown=0, NotChecked=0, Total=6480 [2022-02-11 01:15:32,564 INFO L934 BasicCegarLoop]: 24 mSDtfsCounter, 246 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:15:32,565 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 346 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 01:15:32,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7252 states. [2022-02-11 01:15:32,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7252 to 5867. [2022-02-11 01:15:32,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5867 states, 5866 states have (on average 2.5124445959768154) internal successors, (14738), 5866 states have internal predecessors, (14738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:15:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5867 states to 5867 states and 14738 transitions. [2022-02-11 01:15:32,641 INFO L78 Accepts]: Start accepts. Automaton has 5867 states and 14738 transitions. Word has length 30 [2022-02-11 01:15:32,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:15:32,641 INFO L470 AbstractCegarLoop]: Abstraction has 5867 states and 14738 transitions. [2022-02-11 01:15:32,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:15:32,642 INFO L276 IsEmpty]: Start isEmpty. Operand 5867 states and 14738 transitions. [2022-02-11 01:15:32,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:15:32,647 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:15:32,647 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:15:32,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-02-11 01:15:32,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:15:32,848 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:15:32,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:15:32,848 INFO L85 PathProgramCache]: Analyzing trace with hash 968145010, now seen corresponding path program 93 times [2022-02-11 01:15:32,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:15:32,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48130117] [2022-02-11 01:15:32,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:15:32,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:15:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:15:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:15:33,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:15:33,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48130117] [2022-02-11 01:15:33,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48130117] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:15:33,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161958400] [2022-02-11 01:15:33,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:15:33,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:15:33,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:15:33,126 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:15:33,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-11 01:15:33,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-11 01:15:33,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:15:33,148 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 39 conjunts are in the unsatisfiable core [2022-02-11 01:15:33,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:15:33,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:33,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:33,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:33,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:33,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:33,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:33,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:33,892 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:15:33,892 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 69 treesize of output 127 [2022-02-11 01:15:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:15:34,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:15:35,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:35,894 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:36,126 INFO L353 Elim1Store]: treesize reduction 44, result has 83.1 percent of original size [2022-02-11 01:15:36,127 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 73 treesize of output 242 [2022-02-11 01:16:09,018 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:16:09,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161958400] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:16:09,019 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:16:09,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 39 [2022-02-11 01:16:09,019 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003627704] [2022-02-11 01:16:09,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:16:09,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-11 01:16:09,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:16:09,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-11 01:16:09,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2022-02-11 01:16:09,020 INFO L87 Difference]: Start difference. First operand 5867 states and 14738 transitions. Second operand has 40 states, 40 states have (on average 1.825) internal successors, (73), 39 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:16:11,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:16:11,909 INFO L93 Difference]: Finished difference Result 8982 states and 21661 transitions. [2022-02-11 01:16:11,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-11 01:16:11,910 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.825) internal successors, (73), 39 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:16:11,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:16:11,920 INFO L225 Difference]: With dead ends: 8982 [2022-02-11 01:16:11,920 INFO L226 Difference]: Without dead ends: 8935 [2022-02-11 01:16:11,920 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 42 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1455 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=581, Invalid=4249, Unknown=0, NotChecked=0, Total=4830 [2022-02-11 01:16:11,920 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 178 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 660 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:16:11,920 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 272 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 591 Invalid, 0 Unknown, 660 Unchecked, 0.3s Time] [2022-02-11 01:16:11,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8935 states. [2022-02-11 01:16:11,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8935 to 5939. [2022-02-11 01:16:11,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5939 states, 5938 states have (on average 2.506567867969013) internal successors, (14884), 5938 states have internal predecessors, (14884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:16:11,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5939 states to 5939 states and 14884 transitions. [2022-02-11 01:16:11,999 INFO L78 Accepts]: Start accepts. Automaton has 5939 states and 14884 transitions. Word has length 30 [2022-02-11 01:16:11,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:16:11,999 INFO L470 AbstractCegarLoop]: Abstraction has 5939 states and 14884 transitions. [2022-02-11 01:16:11,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.825) internal successors, (73), 39 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:16:11,999 INFO L276 IsEmpty]: Start isEmpty. Operand 5939 states and 14884 transitions. [2022-02-11 01:16:12,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:16:12,004 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:16:12,004 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:16:12,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-02-11 01:16:12,205 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,SelfDestructingSolverStorable97 [2022-02-11 01:16:12,205 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:16:12,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:16:12,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1672644370, now seen corresponding path program 94 times [2022-02-11 01:16:12,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:16:12,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583504185] [2022-02-11 01:16:12,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:16:12,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:16:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:16:12,468 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:16:12,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:16:12,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583504185] [2022-02-11 01:16:12,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583504185] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:16:12,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700986902] [2022-02-11 01:16:12,469 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:16:12,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:16:12,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:16:12,470 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:16:12,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-11 01:16:12,493 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:16:12,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:16:12,494 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:16:12,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:16:12,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:12,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:12,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:12,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:12,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:12,853 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:12,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:12,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:12,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:12,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:12,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:12,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:12,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:12,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:12,857 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:16:12,881 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:16:12,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:16:13,237 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:16:13,237 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:16:13,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:13,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:13,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:13,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:13,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:13,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:13,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:13,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:13,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:13,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:13,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:13,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:13,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:13,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:13,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:13,570 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:16:13,601 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:16:13,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700986902] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:16:13,601 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:16:13,601 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:16:13,601 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35610833] [2022-02-11 01:16:13,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:16:13,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:16:13,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:16:13,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:16:13,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=857, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:16:13,602 INFO L87 Difference]: Start difference. First operand 5939 states and 14884 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:16:15,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:16:15,564 INFO L93 Difference]: Finished difference Result 7445 states and 18245 transitions. [2022-02-11 01:16:15,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-11 01:16:15,564 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:16:15,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:16:15,575 INFO L225 Difference]: With dead ends: 7445 [2022-02-11 01:16:15,575 INFO L226 Difference]: Without dead ends: 7397 [2022-02-11 01:16:15,575 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 40 SyntacticMatches, 7 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1747 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=778, Invalid=4772, Unknown=0, NotChecked=0, Total=5550 [2022-02-11 01:16:15,576 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 240 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:16:15,576 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 167 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 921 Invalid, 0 Unknown, 77 Unchecked, 0.5s Time] [2022-02-11 01:16:15,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7397 states. [2022-02-11 01:16:15,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7397 to 5905. [2022-02-11 01:16:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5905 states, 5904 states have (on average 2.504742547425474) internal successors, (14788), 5904 states have internal predecessors, (14788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:16:15,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5905 states to 5905 states and 14788 transitions. [2022-02-11 01:16:15,679 INFO L78 Accepts]: Start accepts. Automaton has 5905 states and 14788 transitions. Word has length 30 [2022-02-11 01:16:15,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:16:15,679 INFO L470 AbstractCegarLoop]: Abstraction has 5905 states and 14788 transitions. [2022-02-11 01:16:15,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:16:15,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5905 states and 14788 transitions. [2022-02-11 01:16:15,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:16:15,685 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:16:15,685 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:16:15,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-02-11 01:16:15,885 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,SelfDestructingSolverStorable98 [2022-02-11 01:16:15,886 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:16:15,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:16:15,886 INFO L85 PathProgramCache]: Analyzing trace with hash -298602706, now seen corresponding path program 95 times [2022-02-11 01:16:15,886 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:16:15,886 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378530055] [2022-02-11 01:16:15,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:16:15,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:16:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:16:16,123 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:16:16,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:16:16,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378530055] [2022-02-11 01:16:16,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378530055] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:16:16,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42643271] [2022-02-11 01:16:16,123 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:16:16,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:16:16,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:16:16,124 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:16:16,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-11 01:16:16,145 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-11 01:16:16,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:16:16,147 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:16:16,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:16:16,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:16,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:16,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:16,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:16,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:16,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:16,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:16,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:16,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:16,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:16,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:16,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:16,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:16,527 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:16,528 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:16:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:16:16,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:16:16,909 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:16:16,910 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 40 treesize of output 165 [2022-02-11 01:16:17,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:17,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:17,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:17,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:17,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:17,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:17,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:17,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:17,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:17,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:17,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:17,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:17,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:17,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:17,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:17,392 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:16:17,427 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:16:17,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42643271] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:16:17,428 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:16:17,428 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 28 [2022-02-11 01:16:17,428 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427777222] [2022-02-11 01:16:17,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:16:17,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-11 01:16:17,428 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:16:17,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-11 01:16:17,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2022-02-11 01:16:17,429 INFO L87 Difference]: Start difference. First operand 5905 states and 14788 transitions. Second operand has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:16:19,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:16:19,163 INFO L93 Difference]: Finished difference Result 6938 states and 17086 transitions. [2022-02-11 01:16:19,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-11 01:16:19,164 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:16:19,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:16:19,173 INFO L225 Difference]: With dead ends: 6938 [2022-02-11 01:16:19,173 INFO L226 Difference]: Without dead ends: 6880 [2022-02-11 01:16:19,174 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 39 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=461, Invalid=3445, Unknown=0, NotChecked=0, Total=3906 [2022-02-11 01:16:19,174 INFO L934 BasicCegarLoop]: 23 mSDtfsCounter, 242 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:16:19,174 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 345 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1443 Invalid, 0 Unknown, 45 Unchecked, 0.7s Time] [2022-02-11 01:16:19,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6880 states. [2022-02-11 01:16:19,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6880 to 6284. [2022-02-11 01:16:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6284 states, 6283 states have (on average 2.5102657965939836) internal successors, (15772), 6283 states have internal predecessors, (15772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:16:19,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6284 states to 6284 states and 15772 transitions. [2022-02-11 01:16:19,255 INFO L78 Accepts]: Start accepts. Automaton has 6284 states and 15772 transitions. Word has length 30 [2022-02-11 01:16:19,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:16:19,256 INFO L470 AbstractCegarLoop]: Abstraction has 6284 states and 15772 transitions. [2022-02-11 01:16:19,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:16:19,256 INFO L276 IsEmpty]: Start isEmpty. Operand 6284 states and 15772 transitions. [2022-02-11 01:16:19,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:16:19,262 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:16:19,262 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:16:19,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-02-11 01:16:19,471 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,SelfDestructingSolverStorable99 [2022-02-11 01:16:19,471 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:16:19,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:16:19,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1926341354, now seen corresponding path program 96 times [2022-02-11 01:16:19,471 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:16:19,472 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817458081] [2022-02-11 01:16:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:16:19,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:16:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:16:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:16:19,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:16:19,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817458081] [2022-02-11 01:16:19,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817458081] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:16:19,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735370490] [2022-02-11 01:16:19,723 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:16:19,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:16:19,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:16:19,725 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:16:19,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-11 01:16:19,759 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-11 01:16:19,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:16:19,760 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 39 conjunts are in the unsatisfiable core [2022-02-11 01:16:19,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:16:20,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:20,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:20,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:20,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:20,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:20,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:20,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:20,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:20,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:20,290 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:16:20,290 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 65 treesize of output 75 [2022-02-11 01:16:20,670 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:16:20,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:16:22,487 INFO L353 Elim1Store]: treesize reduction 76, result has 73.0 percent of original size [2022-02-11 01:16:22,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 74 treesize of output 231 [2022-02-11 01:17:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:17:33,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735370490] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:17:33,691 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:17:33,691 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 39 [2022-02-11 01:17:33,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346012841] [2022-02-11 01:17:33,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:17:33,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-11 01:17:33,691 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:17:33,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-11 01:17:33,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1365, Unknown=0, NotChecked=0, Total=1560 [2022-02-11 01:17:33,692 INFO L87 Difference]: Start difference. First operand 6284 states and 15772 transitions. Second operand has 40 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:17:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:17:40,702 INFO L93 Difference]: Finished difference Result 10837 states and 26549 transitions. [2022-02-11 01:17:40,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-11 01:17:40,702 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:17:40,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:17:40,719 INFO L225 Difference]: With dead ends: 10837 [2022-02-11 01:17:40,719 INFO L226 Difference]: Without dead ends: 10791 [2022-02-11 01:17:40,720 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 36 SyntacticMatches, 27 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 4633 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1554, Invalid=10218, Unknown=0, NotChecked=0, Total=11772 [2022-02-11 01:17:40,720 INFO L934 BasicCegarLoop]: 20 mSDtfsCounter, 215 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1178 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:17:40,720 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 298 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 735 Invalid, 0 Unknown, 1178 Unchecked, 0.4s Time] [2022-02-11 01:17:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10791 states. [2022-02-11 01:17:40,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10791 to 6996. [2022-02-11 01:17:40,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6996 states, 6995 states have (on average 2.5122230164403145) internal successors, (17573), 6995 states have internal predecessors, (17573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:17:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6996 states to 6996 states and 17573 transitions. [2022-02-11 01:17:40,844 INFO L78 Accepts]: Start accepts. Automaton has 6996 states and 17573 transitions. Word has length 30 [2022-02-11 01:17:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:17:40,844 INFO L470 AbstractCegarLoop]: Abstraction has 6996 states and 17573 transitions. [2022-02-11 01:17:40,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:17:40,844 INFO L276 IsEmpty]: Start isEmpty. Operand 6996 states and 17573 transitions. [2022-02-11 01:17:40,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:17:40,852 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:17:40,853 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:17:40,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-02-11 01:17:41,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:17:41,053 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:17:41,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:17:41,054 INFO L85 PathProgramCache]: Analyzing trace with hash 871858922, now seen corresponding path program 97 times [2022-02-11 01:17:41,054 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:17:41,054 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605460898] [2022-02-11 01:17:41,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:17:41,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:17:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:17:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:17:41,326 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:17:41,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605460898] [2022-02-11 01:17:41,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605460898] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:17:41,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047536598] [2022-02-11 01:17:41,326 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:17:41,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:17:41,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:17:41,327 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:17:41,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-11 01:17:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:17:41,350 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:17:41,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:17:41,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:41,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:41,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:41,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:41,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:41,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:41,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:41,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:41,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:41,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:41,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:41,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:41,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:41,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:41,720 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:17:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:17:41,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:17:42,142 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:17:42,142 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:17:42,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:42,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:42,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:42,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:42,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:42,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:42,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:42,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:42,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:42,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:42,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:42,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:42,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:42,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:42,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:42,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:17:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:17:42,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047536598] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:17:42,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:17:42,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 30 [2022-02-11 01:17:42,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246598791] [2022-02-11 01:17:42,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:17:42,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-11 01:17:42,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:17:42,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-11 01:17:42,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2022-02-11 01:17:42,612 INFO L87 Difference]: Start difference. First operand 6996 states and 17573 transitions. Second operand has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:17:46,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:17:46,298 INFO L93 Difference]: Finished difference Result 10236 states and 25134 transitions. [2022-02-11 01:17:46,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-11 01:17:46,298 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:17:46,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:17:46,314 INFO L225 Difference]: With dead ends: 10236 [2022-02-11 01:17:46,314 INFO L226 Difference]: Without dead ends: 10148 [2022-02-11 01:17:46,315 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2748 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1148, Invalid=7972, Unknown=0, NotChecked=0, Total=9120 [2022-02-11 01:17:46,315 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 354 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1719 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 01:17:46,315 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 364 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1719 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 01:17:46,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10148 states. [2022-02-11 01:17:46,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10148 to 6838. [2022-02-11 01:17:46,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6838 states, 6837 states have (on average 2.5066549656281993) internal successors, (17138), 6837 states have internal predecessors, (17138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:17:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6838 states to 6838 states and 17138 transitions. [2022-02-11 01:17:46,423 INFO L78 Accepts]: Start accepts. Automaton has 6838 states and 17138 transitions. Word has length 30 [2022-02-11 01:17:46,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:17:46,423 INFO L470 AbstractCegarLoop]: Abstraction has 6838 states and 17138 transitions. [2022-02-11 01:17:46,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:17:46,424 INFO L276 IsEmpty]: Start isEmpty. Operand 6838 states and 17138 transitions. [2022-02-11 01:17:46,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:17:46,431 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:17:46,431 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:17:46,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-02-11 01:17:46,631 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,SelfDestructingSolverStorable101 [2022-02-11 01:17:46,631 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:17:46,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:17:46,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1702919190, now seen corresponding path program 98 times [2022-02-11 01:17:46,631 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:17:46,631 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701324841] [2022-02-11 01:17:46,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:17:46,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:17:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:17:46,879 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:17:46,879 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:17:46,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701324841] [2022-02-11 01:17:46,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701324841] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:17:46,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900356216] [2022-02-11 01:17:46,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:17:46,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:17:46,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:17:46,880 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:17:46,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-11 01:17:46,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:17:46,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:17:46,900 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:17:46,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:17:47,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:47,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:47,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:47,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:47,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:47,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:47,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:47,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:47,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:47,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:47,265 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:17:47,296 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:17:47,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:17:47,697 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:17:47,697 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:17:48,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:48,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:48,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:48,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:48,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:48,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:48,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:48,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:48,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:48,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:48,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:48,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:48,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:48,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:48,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:48,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:17:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:17:48,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900356216] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:17:48,249 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:17:48,250 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2022-02-11 01:17:48,250 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186643830] [2022-02-11 01:17:48,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:17:48,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:17:48,250 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:17:48,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:17:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:17:48,250 INFO L87 Difference]: Start difference. First operand 6838 states and 17138 transitions. Second operand has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:17:51,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:17:51,631 INFO L93 Difference]: Finished difference Result 8248 states and 20512 transitions. [2022-02-11 01:17:51,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-11 01:17:51,632 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:17:51,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:17:51,645 INFO L225 Difference]: With dead ends: 8248 [2022-02-11 01:17:51,645 INFO L226 Difference]: Without dead ends: 8172 [2022-02-11 01:17:51,646 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1929 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=862, Invalid=6448, Unknown=0, NotChecked=0, Total=7310 [2022-02-11 01:17:51,646 INFO L934 BasicCegarLoop]: 21 mSDtfsCounter, 216 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:17:51,646 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 296 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 01:17:51,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8172 states. [2022-02-11 01:17:51,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8172 to 6987. [2022-02-11 01:17:51,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6987 states, 6986 states have (on average 2.5052963068995133) internal successors, (17502), 6986 states have internal predecessors, (17502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:17:51,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6987 states to 6987 states and 17502 transitions. [2022-02-11 01:17:51,771 INFO L78 Accepts]: Start accepts. Automaton has 6987 states and 17502 transitions. Word has length 30 [2022-02-11 01:17:51,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:17:51,771 INFO L470 AbstractCegarLoop]: Abstraction has 6987 states and 17502 transitions. [2022-02-11 01:17:51,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:17:51,771 INFO L276 IsEmpty]: Start isEmpty. Operand 6987 states and 17502 transitions. [2022-02-11 01:17:51,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:17:51,780 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:17:51,780 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:17:51,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-02-11 01:17:51,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:17:51,980 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:17:51,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:17:51,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1908857622, now seen corresponding path program 99 times [2022-02-11 01:17:51,981 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:17:51,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648136211] [2022-02-11 01:17:51,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:17:51,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:17:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:17:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:17:52,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:17:52,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648136211] [2022-02-11 01:17:52,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648136211] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:17:52,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627598197] [2022-02-11 01:17:52,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:17:52,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:17:52,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:17:52,264 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:17:52,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-11 01:17:52,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-11 01:17:52,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:17:52,285 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 39 conjunts are in the unsatisfiable core [2022-02-11 01:17:52,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:17:52,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:52,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:52,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:52,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:52,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:17:52,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:17:53,021 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:17:53,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 69 treesize of output 137 [2022-02-11 01:18:00,170 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:18:00,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:18:01,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:18:01,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:18:02,047 INFO L353 Elim1Store]: treesize reduction 44, result has 83.1 percent of original size [2022-02-11 01:18:02,048 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 74 treesize of output 243 [2022-02-11 01:18:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:18:56,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627598197] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:18:56,746 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:18:56,746 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 40 [2022-02-11 01:18:56,746 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672775792] [2022-02-11 01:18:56,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:18:56,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-11 01:18:56,747 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:18:56,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-11 01:18:56,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1456, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 01:18:56,747 INFO L87 Difference]: Start difference. First operand 6987 states and 17502 transitions. Second operand has 41 states, 41 states have (on average 1.829268292682927) internal successors, (75), 40 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:02,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:19:02,974 INFO L93 Difference]: Finished difference Result 9822 states and 24035 transitions. [2022-02-11 01:19:02,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-11 01:19:02,974 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.829268292682927) internal successors, (75), 40 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:19:02,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:19:02,989 INFO L225 Difference]: With dead ends: 9822 [2022-02-11 01:19:02,989 INFO L226 Difference]: Without dead ends: 9757 [2022-02-11 01:19:02,990 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 44 SyntacticMatches, 18 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4550 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1648, Invalid=12158, Unknown=0, NotChecked=0, Total=13806 [2022-02-11 01:19:02,990 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 223 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 2486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1254 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:19:02,990 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 452 Invalid, 2486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1132 Invalid, 0 Unknown, 1254 Unchecked, 0.6s Time] [2022-02-11 01:19:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9757 states. [2022-02-11 01:19:03,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9757 to 7259. [2022-02-11 01:19:03,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7259 states, 7258 states have (on average 2.4977955359603197) internal successors, (18129), 7258 states have internal predecessors, (18129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:03,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7259 states to 7259 states and 18129 transitions. [2022-02-11 01:19:03,103 INFO L78 Accepts]: Start accepts. Automaton has 7259 states and 18129 transitions. Word has length 30 [2022-02-11 01:19:03,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:19:03,103 INFO L470 AbstractCegarLoop]: Abstraction has 7259 states and 18129 transitions. [2022-02-11 01:19:03,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.829268292682927) internal successors, (75), 40 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:03,103 INFO L276 IsEmpty]: Start isEmpty. Operand 7259 states and 18129 transitions. [2022-02-11 01:19:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:19:03,112 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:19:03,112 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:19:03,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-02-11 01:19:03,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-02-11 01:19:03,312 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:19:03,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:19:03,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1519015272, now seen corresponding path program 100 times [2022-02-11 01:19:03,313 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:19:03,313 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140097938] [2022-02-11 01:19:03,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:19:03,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:19:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:19:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:19:03,586 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:19:03,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140097938] [2022-02-11 01:19:03,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140097938] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:19:03,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940193182] [2022-02-11 01:19:03,587 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:19:03,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:19:03,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:19:03,588 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:19:03,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-11 01:19:03,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:19:03,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:19:03,610 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:19:03,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:19:03,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:03,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:03,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:03,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:03,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:03,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:03,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:03,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:03,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:03,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:03,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:03,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:03,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:03,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:19:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:19:04,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:19:04,413 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:19:04,414 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:19:04,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:04,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:04,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:04,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:04,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:04,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:04,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:04,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:04,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:04,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:04,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:04,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:04,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:04,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:04,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:04,834 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:19:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:19:04,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940193182] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:19:04,869 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:19:04,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 30 [2022-02-11 01:19:04,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028939938] [2022-02-11 01:19:04,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:19:04,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-11 01:19:04,870 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:19:04,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-11 01:19:04,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=837, Unknown=0, NotChecked=0, Total=930 [2022-02-11 01:19:04,870 INFO L87 Difference]: Start difference. First operand 7259 states and 18129 transitions. Second operand has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:08,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:19:08,292 INFO L93 Difference]: Finished difference Result 8399 states and 20728 transitions. [2022-02-11 01:19:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-11 01:19:08,292 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:19:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:19:08,306 INFO L225 Difference]: With dead ends: 8399 [2022-02-11 01:19:08,306 INFO L226 Difference]: Without dead ends: 8322 [2022-02-11 01:19:08,307 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1923 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=798, Invalid=6684, Unknown=0, NotChecked=0, Total=7482 [2022-02-11 01:19:08,307 INFO L934 BasicCegarLoop]: 23 mSDtfsCounter, 223 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 01:19:08,307 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 350 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 01:19:08,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8322 states. [2022-02-11 01:19:08,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8322 to 7589. [2022-02-11 01:19:08,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7589 states, 7588 states have (on average 2.4965735371639433) internal successors, (18944), 7588 states have internal predecessors, (18944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7589 states to 7589 states and 18944 transitions. [2022-02-11 01:19:08,443 INFO L78 Accepts]: Start accepts. Automaton has 7589 states and 18944 transitions. Word has length 30 [2022-02-11 01:19:08,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:19:08,444 INFO L470 AbstractCegarLoop]: Abstraction has 7589 states and 18944 transitions. [2022-02-11 01:19:08,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:08,444 INFO L276 IsEmpty]: Start isEmpty. Operand 7589 states and 18944 transitions. [2022-02-11 01:19:08,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:19:08,452 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:19:08,452 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:19:08,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-02-11 01:19:08,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:19:08,653 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:19:08,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:19:08,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2041359046, now seen corresponding path program 101 times [2022-02-11 01:19:08,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:19:08,653 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884909575] [2022-02-11 01:19:08,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:19:08,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:19:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:19:08,944 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:19:08,944 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:19:08,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884909575] [2022-02-11 01:19:08,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884909575] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:19:08,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518040860] [2022-02-11 01:19:08,944 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:19:08,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:19:08,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:19:08,945 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:19:08,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-11 01:19:08,965 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 01:19:08,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:19:08,966 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:19:08,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:19:09,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:09,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:09,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:09,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:09,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:09,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:09,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:09,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:09,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:09,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:09,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:09,363 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:19:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:19:09,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:19:09,773 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:19:09,774 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:19:10,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:10,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:10,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:10,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:10,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:10,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:10,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:10,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:10,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:10,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:10,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:10,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:10,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:10,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:10,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:10,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:19:10,318 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:19:10,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518040860] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:19:10,318 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:19:10,318 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:19:10,318 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076649878] [2022-02-11 01:19:10,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:19:10,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:19:10,318 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:19:10,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:19:10,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:19:10,319 INFO L87 Difference]: Start difference. First operand 7589 states and 18944 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:12,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:19:12,607 INFO L93 Difference]: Finished difference Result 9687 states and 23583 transitions. [2022-02-11 01:19:12,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-11 01:19:12,607 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:19:12,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:19:12,624 INFO L225 Difference]: With dead ends: 9687 [2022-02-11 01:19:12,624 INFO L226 Difference]: Without dead ends: 9645 [2022-02-11 01:19:12,624 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1350 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=561, Invalid=4551, Unknown=0, NotChecked=0, Total=5112 [2022-02-11 01:19:12,625 INFO L934 BasicCegarLoop]: 20 mSDtfsCounter, 194 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 408 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:19:12,625 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 240 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1138 Invalid, 0 Unknown, 408 Unchecked, 0.6s Time] [2022-02-11 01:19:12,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9645 states. [2022-02-11 01:19:12,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9645 to 7716. [2022-02-11 01:19:12,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7716 states, 7715 states have (on average 2.4952689565780948) internal successors, (19251), 7715 states have internal predecessors, (19251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7716 states to 7716 states and 19251 transitions. [2022-02-11 01:19:12,760 INFO L78 Accepts]: Start accepts. Automaton has 7716 states and 19251 transitions. Word has length 30 [2022-02-11 01:19:12,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:19:12,760 INFO L470 AbstractCegarLoop]: Abstraction has 7716 states and 19251 transitions. [2022-02-11 01:19:12,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:12,760 INFO L276 IsEmpty]: Start isEmpty. Operand 7716 states and 19251 transitions. [2022-02-11 01:19:12,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:19:12,769 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:19:12,769 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:19:12,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-02-11 01:19:12,970 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,SelfDestructingSolverStorable105 [2022-02-11 01:19:12,970 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:19:12,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:19:12,970 INFO L85 PathProgramCache]: Analyzing trace with hash -552006922, now seen corresponding path program 102 times [2022-02-11 01:19:12,971 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:19:12,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908352066] [2022-02-11 01:19:12,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:19:12,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:19:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:19:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:19:13,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:19:13,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908352066] [2022-02-11 01:19:13,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908352066] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:19:13,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273038870] [2022-02-11 01:19:13,280 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:19:13,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:19:13,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:19:13,281 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:19:13,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-11 01:19:13,303 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 01:19:13,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:19:13,304 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:19:13,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:19:13,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:13,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:13,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:13,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:13,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:13,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:13,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:13,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:13,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:13,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:13,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:19:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:19:13,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:19:14,133 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:19:14,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:19:14,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:14,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:14,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:14,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:14,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:14,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:14,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:14,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:14,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:14,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:14,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:14,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:14,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:14,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:14,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:14,597 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:19:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:19:14,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273038870] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:19:14,641 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:19:14,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:19:14,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460152609] [2022-02-11 01:19:14,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:19:14,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:19:14,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:19:14,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:19:14,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:19:14,642 INFO L87 Difference]: Start difference. First operand 7716 states and 19251 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:17,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:19:17,432 INFO L93 Difference]: Finished difference Result 9343 states and 22828 transitions. [2022-02-11 01:19:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-11 01:19:17,432 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:19:17,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:19:17,445 INFO L225 Difference]: With dead ends: 9343 [2022-02-11 01:19:17,445 INFO L226 Difference]: Without dead ends: 9253 [2022-02-11 01:19:17,446 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1749 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=756, Invalid=5564, Unknown=0, NotChecked=0, Total=6320 [2022-02-11 01:19:17,446 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 216 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 256 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:19:17,446 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 184 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1191 Invalid, 0 Unknown, 256 Unchecked, 0.6s Time] [2022-02-11 01:19:17,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9253 states. [2022-02-11 01:19:17,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9253 to 7775. [2022-02-11 01:19:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7775 states, 7774 states have (on average 2.491381528170826) internal successors, (19368), 7774 states have internal predecessors, (19368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:17,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7775 states to 7775 states and 19368 transitions. [2022-02-11 01:19:17,555 INFO L78 Accepts]: Start accepts. Automaton has 7775 states and 19368 transitions. Word has length 30 [2022-02-11 01:19:17,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:19:17,555 INFO L470 AbstractCegarLoop]: Abstraction has 7775 states and 19368 transitions. [2022-02-11 01:19:17,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:17,555 INFO L276 IsEmpty]: Start isEmpty. Operand 7775 states and 19368 transitions. [2022-02-11 01:19:17,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:19:17,564 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:19:17,564 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:19:17,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-02-11 01:19:17,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:19:17,764 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:19:17,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:19:17,764 INFO L85 PathProgramCache]: Analyzing trace with hash -387775446, now seen corresponding path program 103 times [2022-02-11 01:19:17,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:19:17,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875089891] [2022-02-11 01:19:17,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:19:17,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:19:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:19:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:19:18,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:19:18,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875089891] [2022-02-11 01:19:18,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875089891] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:19:18,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839988853] [2022-02-11 01:19:18,033 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:19:18,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:19:18,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:19:18,034 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:19:18,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-11 01:19:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:19:18,054 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:19:18,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:19:18,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:18,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:18,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:18,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:18,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:18,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:18,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:18,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:18,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:18,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:18,407 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:19:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:19:18,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:19:18,830 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:19:18,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:19:19,412 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:19,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:19,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:19,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:19,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:19,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:19,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:19,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:19,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:19,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:19,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:19,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:19,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:19,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:19,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:19,418 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:19:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:19:19,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839988853] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:19:19,464 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:19:19,464 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2022-02-11 01:19:19,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369830863] [2022-02-11 01:19:19,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:19:19,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:19:19,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:19:19,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:19:19,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:19:19,465 INFO L87 Difference]: Start difference. First operand 7775 states and 19368 transitions. Second operand has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:22,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:19:22,520 INFO L93 Difference]: Finished difference Result 9271 states and 22798 transitions. [2022-02-11 01:19:22,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-11 01:19:22,520 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:19:22,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:19:22,534 INFO L225 Difference]: With dead ends: 9271 [2022-02-11 01:19:22,534 INFO L226 Difference]: Without dead ends: 9179 [2022-02-11 01:19:22,535 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2104 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1012, Invalid=6128, Unknown=0, NotChecked=0, Total=7140 [2022-02-11 01:19:22,535 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 296 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:19:22,535 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 346 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 01:19:22,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9179 states. [2022-02-11 01:19:22,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9179 to 8147. [2022-02-11 01:19:22,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8147 states, 8146 states have (on average 2.480726737048858) internal successors, (20208), 8146 states have internal predecessors, (20208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:22,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8147 states to 8147 states and 20208 transitions. [2022-02-11 01:19:22,676 INFO L78 Accepts]: Start accepts. Automaton has 8147 states and 20208 transitions. Word has length 30 [2022-02-11 01:19:22,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:19:22,676 INFO L470 AbstractCegarLoop]: Abstraction has 8147 states and 20208 transitions. [2022-02-11 01:19:22,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:22,676 INFO L276 IsEmpty]: Start isEmpty. Operand 8147 states and 20208 transitions. [2022-02-11 01:19:22,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:19:22,685 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:19:22,685 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:19:22,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-02-11 01:19:22,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:19:22,886 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:19:22,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:19:22,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1730964982, now seen corresponding path program 104 times [2022-02-11 01:19:22,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:19:22,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043669840] [2022-02-11 01:19:22,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:19:22,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:19:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:19:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:19:23,181 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:19:23,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043669840] [2022-02-11 01:19:23,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043669840] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:19:23,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834252958] [2022-02-11 01:19:23,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:19:23,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:19:23,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:19:23,183 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:19:23,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-11 01:19:23,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:19:23,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:19:23,203 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:19:23,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:19:23,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:23,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:23,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:23,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:23,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:23,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:23,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:23,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:23,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:23,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:23,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:23,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:23,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:23,604 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:19:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:19:23,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:19:23,995 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:19:23,995 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:19:24,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:24,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:24,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:24,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:24,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:24,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:24,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:24,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:24,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:24,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:24,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:24,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:24,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:24,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:24,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:24,345 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:19:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:19:24,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834252958] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:19:24,389 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:19:24,389 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-02-11 01:19:24,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428390826] [2022-02-11 01:19:24,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:19:24,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:19:24,390 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:19:24,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:19:24,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:19:24,390 INFO L87 Difference]: Start difference. First operand 8147 states and 20208 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:26,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:19:26,625 INFO L93 Difference]: Finished difference Result 9839 states and 23846 transitions. [2022-02-11 01:19:26,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-11 01:19:26,625 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:19:26,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:19:26,640 INFO L225 Difference]: With dead ends: 9839 [2022-02-11 01:19:26,640 INFO L226 Difference]: Without dead ends: 9794 [2022-02-11 01:19:26,641 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1597 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=658, Invalid=4744, Unknown=0, NotChecked=0, Total=5402 [2022-02-11 01:19:26,641 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 219 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 410 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:19:26,641 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 363 Invalid, 1917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1436 Invalid, 0 Unknown, 410 Unchecked, 0.7s Time] [2022-02-11 01:19:26,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9794 states. [2022-02-11 01:19:26,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9794 to 8058. [2022-02-11 01:19:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8058 states, 8057 states have (on average 2.4876504902569194) internal successors, (20043), 8057 states have internal predecessors, (20043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:26,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8058 states to 8058 states and 20043 transitions. [2022-02-11 01:19:26,769 INFO L78 Accepts]: Start accepts. Automaton has 8058 states and 20043 transitions. Word has length 30 [2022-02-11 01:19:26,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:19:26,769 INFO L470 AbstractCegarLoop]: Abstraction has 8058 states and 20043 transitions. [2022-02-11 01:19:26,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:19:26,769 INFO L276 IsEmpty]: Start isEmpty. Operand 8058 states and 20043 transitions. [2022-02-11 01:19:26,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:19:26,778 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:19:26,778 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:19:26,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-02-11 01:19:26,978 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,SelfDestructingSolverStorable108 [2022-02-11 01:19:26,978 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:19:26,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:19:26,979 INFO L85 PathProgramCache]: Analyzing trace with hash -158977306, now seen corresponding path program 105 times [2022-02-11 01:19:26,979 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:19:26,979 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824477306] [2022-02-11 01:19:26,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:19:26,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:19:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:19:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:19:27,305 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:19:27,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824477306] [2022-02-11 01:19:27,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824477306] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:19:27,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000946601] [2022-02-11 01:19:27,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:19:27,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:19:27,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:19:27,306 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:19:27,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-11 01:19:27,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-11 01:19:27,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:19:27,326 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-11 01:19:27,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:19:27,840 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:27,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:27,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:27,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:19:27,888 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:19:27,888 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 65 treesize of output 133 [2022-02-11 01:19:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:19:28,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:19:28,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:28,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:28,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:28,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:28,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:29,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:29,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:29,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:29,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:19:29,081 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:19:29,082 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 19 case distinctions, treesize of input 78 treesize of output 223 [2022-02-11 01:19:55,403 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:19:55,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000946601] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:19:55,404 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:19:55,404 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 39 [2022-02-11 01:19:55,404 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867619522] [2022-02-11 01:19:55,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:19:55,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-11 01:19:55,404 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:19:55,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-11 01:19:55,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1365, Unknown=0, NotChecked=0, Total=1560 [2022-02-11 01:19:55,404 INFO L87 Difference]: Start difference. First operand 8058 states and 20043 transitions. Second operand has 40 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:20:00,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:20:00,791 INFO L93 Difference]: Finished difference Result 11602 states and 28388 transitions. [2022-02-11 01:20:00,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-11 01:20:00,791 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:20:00,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:20:00,809 INFO L225 Difference]: With dead ends: 11602 [2022-02-11 01:20:00,809 INFO L226 Difference]: Without dead ends: 11545 [2022-02-11 01:20:00,810 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 36 SyntacticMatches, 11 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4469 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1996, Invalid=13010, Unknown=0, NotChecked=0, Total=15006 [2022-02-11 01:20:00,810 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 295 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1024 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:20:00,810 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 420 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 971 Invalid, 0 Unknown, 1024 Unchecked, 0.5s Time] [2022-02-11 01:20:00,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11545 states. [2022-02-11 01:20:00,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11545 to 8002. [2022-02-11 01:20:00,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8002 states, 8001 states have (on average 2.4905636795400574) internal successors, (19927), 8001 states have internal predecessors, (19927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:20:00,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8002 states to 8002 states and 19927 transitions. [2022-02-11 01:20:00,951 INFO L78 Accepts]: Start accepts. Automaton has 8002 states and 19927 transitions. Word has length 30 [2022-02-11 01:20:00,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:20:00,951 INFO L470 AbstractCegarLoop]: Abstraction has 8002 states and 19927 transitions. [2022-02-11 01:20:00,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:20:00,952 INFO L276 IsEmpty]: Start isEmpty. Operand 8002 states and 19927 transitions. [2022-02-11 01:20:00,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:20:00,961 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:20:00,961 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:20:00,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-02-11 01:20:01,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:20:01,161 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:20:01,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:20:01,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1739359666, now seen corresponding path program 106 times [2022-02-11 01:20:01,162 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:20:01,162 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024579564] [2022-02-11 01:20:01,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:20:01,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:20:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:20:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:20:01,402 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:20:01,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024579564] [2022-02-11 01:20:01,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024579564] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:20:01,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099237619] [2022-02-11 01:20:01,402 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:20:01,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:20:01,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:20:01,403 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:20:01,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-02-11 01:20:01,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:20:01,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:20:01,426 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:20:01,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:20:01,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:01,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:01,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:01,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:01,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:01,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:01,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:01,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:01,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:01,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:01,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:01,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:01,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:01,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:01,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:01,818 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:20:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:20:01,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:20:02,204 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:20:02,204 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 40 treesize of output 165 [2022-02-11 01:20:02,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:02,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:02,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:02,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:02,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:02,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:02,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:02,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:02,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:02,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:02,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:02,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:02,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:02,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:02,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:02,547 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:20:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:20:02,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099237619] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:20:02,595 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:20:02,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 28 [2022-02-11 01:20:02,595 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749865718] [2022-02-11 01:20:02,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:20:02,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-11 01:20:02,596 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:20:02,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-11 01:20:02,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2022-02-11 01:20:02,596 INFO L87 Difference]: Start difference. First operand 8002 states and 19927 transitions. Second operand has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:20:04,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:20:04,524 INFO L93 Difference]: Finished difference Result 8930 states and 22016 transitions. [2022-02-11 01:20:04,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-11 01:20:04,525 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:20:04,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:20:04,538 INFO L225 Difference]: With dead ends: 8930 [2022-02-11 01:20:04,538 INFO L226 Difference]: Without dead ends: 8896 [2022-02-11 01:20:04,539 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 38 SyntacticMatches, 8 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=494, Invalid=3666, Unknown=0, NotChecked=0, Total=4160 [2022-02-11 01:20:04,539 INFO L934 BasicCegarLoop]: 30 mSDtfsCounter, 255 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:20:04,539 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 390 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1689 Invalid, 0 Unknown, 107 Unchecked, 0.8s Time] [2022-02-11 01:20:04,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8896 states. [2022-02-11 01:20:04,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8896 to 8392. [2022-02-11 01:20:04,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8392 states, 8391 states have (on average 2.505780002383506) internal successors, (21026), 8391 states have internal predecessors, (21026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:20:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8392 states to 8392 states and 21026 transitions. [2022-02-11 01:20:04,664 INFO L78 Accepts]: Start accepts. Automaton has 8392 states and 21026 transitions. Word has length 30 [2022-02-11 01:20:04,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:20:04,664 INFO L470 AbstractCegarLoop]: Abstraction has 8392 states and 21026 transitions. [2022-02-11 01:20:04,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:20:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand 8392 states and 21026 transitions. [2022-02-11 01:20:04,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:20:04,673 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:20:04,673 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:20:04,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-02-11 01:20:04,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:20:04,874 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:20:04,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:20:04,875 INFO L85 PathProgramCache]: Analyzing trace with hash 335043182, now seen corresponding path program 107 times [2022-02-11 01:20:04,875 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:20:04,875 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130781986] [2022-02-11 01:20:04,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:20:04,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:20:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:20:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:20:05,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:20:05,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130781986] [2022-02-11 01:20:05,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130781986] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:20:05,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608574361] [2022-02-11 01:20:05,116 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:20:05,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:20:05,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:20:05,117 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:20:05,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-02-11 01:20:05,137 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 01:20:05,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:20:05,138 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:20:05,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:20:05,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:05,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:05,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:05,491 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:05,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:05,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:05,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:05,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:05,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:05,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:05,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:05,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:05,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:05,496 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:20:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:20:05,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:20:05,918 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:20:05,919 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:20:06,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:06,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:06,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:06,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:06,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:06,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:06,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:06,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:06,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:06,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:06,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:06,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:06,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:06,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:06,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:06,467 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:20:06,518 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:20:06,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608574361] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:20:06,518 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:20:06,518 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2022-02-11 01:20:06,518 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159547973] [2022-02-11 01:20:06,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:20:06,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:20:06,518 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:20:06,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:20:06,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:20:06,519 INFO L87 Difference]: Start difference. First operand 8392 states and 21026 transitions. Second operand has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:20:09,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:20:09,643 INFO L93 Difference]: Finished difference Result 9626 states and 23879 transitions. [2022-02-11 01:20:09,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-11 01:20:09,643 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:20:09,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:20:09,656 INFO L225 Difference]: With dead ends: 9626 [2022-02-11 01:20:09,657 INFO L226 Difference]: Without dead ends: 9520 [2022-02-11 01:20:09,657 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 38 SyntacticMatches, 7 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2068 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=912, Invalid=6228, Unknown=0, NotChecked=0, Total=7140 [2022-02-11 01:20:09,657 INFO L934 BasicCegarLoop]: 28 mSDtfsCounter, 355 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 1687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 01:20:09,657 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 419 Invalid, 1687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 01:20:09,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9520 states. [2022-02-11 01:20:09,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9520 to 8462. [2022-02-11 01:20:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8462 states, 8461 states have (on average 2.5004136626876257) internal successors, (21156), 8461 states have internal predecessors, (21156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:20:09,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8462 states to 8462 states and 21156 transitions. [2022-02-11 01:20:09,771 INFO L78 Accepts]: Start accepts. Automaton has 8462 states and 21156 transitions. Word has length 30 [2022-02-11 01:20:09,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:20:09,771 INFO L470 AbstractCegarLoop]: Abstraction has 8462 states and 21156 transitions. [2022-02-11 01:20:09,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:20:09,771 INFO L276 IsEmpty]: Start isEmpty. Operand 8462 states and 21156 transitions. [2022-02-11 01:20:09,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:20:09,780 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:20:09,780 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:20:09,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2022-02-11 01:20:09,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:20:09,981 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:20:09,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:20:09,981 INFO L85 PathProgramCache]: Analyzing trace with hash 129104750, now seen corresponding path program 108 times [2022-02-11 01:20:09,981 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:20:09,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384516263] [2022-02-11 01:20:09,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:20:09,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:20:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:20:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:20:10,231 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:20:10,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384516263] [2022-02-11 01:20:10,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384516263] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:20:10,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466562126] [2022-02-11 01:20:10,231 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:20:10,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:20:10,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:20:10,232 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:20:10,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-02-11 01:20:10,253 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 01:20:10,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:20:10,254 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 39 conjunts are in the unsatisfiable core [2022-02-11 01:20:10,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:20:12,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:12,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:12,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:12,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:12,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:12,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:20:12,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:12,346 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:20:12,346 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 73 treesize of output 173 [2022-02-11 01:20:12,816 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:20:12,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:20:13,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:13,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:13,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:13,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:13,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:13,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:20:13,929 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:20:13,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 74 treesize of output 243 [2022-02-11 01:21:39,629 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:21:39,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466562126] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:21:39,630 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:21:39,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 39 [2022-02-11 01:21:39,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538919824] [2022-02-11 01:21:39,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:21:39,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-11 01:21:39,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:21:39,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-11 01:21:39,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2022-02-11 01:21:39,639 INFO L87 Difference]: Start difference. First operand 8462 states and 21156 transitions. Second operand has 40 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:21:44,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:21:44,446 INFO L93 Difference]: Finished difference Result 12357 states and 30466 transitions. [2022-02-11 01:21:44,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-11 01:21:44,446 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:21:44,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:21:44,467 INFO L225 Difference]: With dead ends: 12357 [2022-02-11 01:21:44,468 INFO L226 Difference]: Without dead ends: 12313 [2022-02-11 01:21:44,468 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 35 SyntacticMatches, 10 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2308 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1283, Invalid=7089, Unknown=0, NotChecked=0, Total=8372 [2022-02-11 01:21:44,468 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 249 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 963 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:21:44,469 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 280 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 726 Invalid, 0 Unknown, 963 Unchecked, 0.4s Time] [2022-02-11 01:21:44,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12313 states. [2022-02-11 01:21:44,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12313 to 8580. [2022-02-11 01:21:44,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8580 states, 8579 states have (on average 2.4991257722345264) internal successors, (21440), 8579 states have internal predecessors, (21440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:21:44,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8580 states to 8580 states and 21440 transitions. [2022-02-11 01:21:44,612 INFO L78 Accepts]: Start accepts. Automaton has 8580 states and 21440 transitions. Word has length 30 [2022-02-11 01:21:44,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:21:44,612 INFO L470 AbstractCegarLoop]: Abstraction has 8580 states and 21440 transitions. [2022-02-11 01:21:44,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:21:44,612 INFO L276 IsEmpty]: Start isEmpty. Operand 8580 states and 21440 transitions. [2022-02-11 01:21:44,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:21:44,622 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:21:44,622 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:21:44,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-02-11 01:21:44,822 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,SelfDestructingSolverStorable112 [2022-02-11 01:21:44,822 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:21:44,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:21:44,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1938423176, now seen corresponding path program 109 times [2022-02-11 01:21:44,822 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:21:44,822 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581354831] [2022-02-11 01:21:44,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:21:44,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:21:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:21:45,135 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:21:45,135 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:21:45,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581354831] [2022-02-11 01:21:45,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581354831] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:21:45,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370277391] [2022-02-11 01:21:45,135 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:21:45,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:21:45,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:21:45,137 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:21:45,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-02-11 01:21:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:21:45,159 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:21:45,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:21:45,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:45,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:45,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:45,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:45,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:45,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:45,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:45,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:45,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:45,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:45,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:45,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:45,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:45,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:45,520 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:21:45,548 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:21:45,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:21:45,950 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:21:45,950 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:21:46,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:46,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:46,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:46,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:46,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:46,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:46,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:46,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:46,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:46,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:46,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:46,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:46,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:46,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:46,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:46,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:21:46,396 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:21:46,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370277391] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:21:46,397 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:21:46,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 30 [2022-02-11 01:21:46,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096969674] [2022-02-11 01:21:46,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:21:46,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-11 01:21:46,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:21:46,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-11 01:21:46,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=823, Unknown=0, NotChecked=0, Total=930 [2022-02-11 01:21:46,398 INFO L87 Difference]: Start difference. First operand 8580 states and 21440 transitions. Second operand has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 30 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:21:48,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:21:48,873 INFO L93 Difference]: Finished difference Result 11014 states and 27023 transitions. [2022-02-11 01:21:48,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-11 01:21:48,873 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 30 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:21:48,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:21:48,889 INFO L225 Difference]: With dead ends: 11014 [2022-02-11 01:21:48,889 INFO L226 Difference]: Without dead ends: 10936 [2022-02-11 01:21:48,889 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 38 SyntacticMatches, 7 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1388 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=668, Invalid=4588, Unknown=0, NotChecked=0, Total=5256 [2022-02-11 01:21:48,890 INFO L934 BasicCegarLoop]: 23 mSDtfsCounter, 190 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:21:48,890 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 334 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 01:21:48,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10936 states. [2022-02-11 01:21:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10936 to 8750. [2022-02-11 01:21:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8750 states, 8749 states have (on average 2.4878271802491714) internal successors, (21766), 8749 states have internal predecessors, (21766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:21:49,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8750 states to 8750 states and 21766 transitions. [2022-02-11 01:21:49,011 INFO L78 Accepts]: Start accepts. Automaton has 8750 states and 21766 transitions. Word has length 30 [2022-02-11 01:21:49,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:21:49,011 INFO L470 AbstractCegarLoop]: Abstraction has 8750 states and 21766 transitions. [2022-02-11 01:21:49,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 30 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:21:49,012 INFO L276 IsEmpty]: Start isEmpty. Operand 8750 states and 21766 transitions. [2022-02-11 01:21:49,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-11 01:21:49,021 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:21:49,021 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:21:49,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-02-11 01:21:49,221 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,SelfDestructingSolverStorable113 [2022-02-11 01:21:49,221 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:21:49,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:21:49,222 INFO L85 PathProgramCache]: Analyzing trace with hash -209232786, now seen corresponding path program 110 times [2022-02-11 01:21:49,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:21:49,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735087738] [2022-02-11 01:21:49,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:21:49,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:21:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:21:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:21:49,538 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:21:49,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735087738] [2022-02-11 01:21:49,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735087738] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:21:49,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083309907] [2022-02-11 01:21:49,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:21:49,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:21:49,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:21:49,539 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:21:49,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-02-11 01:21:49,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:21:49,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:21:49,559 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 01:21:49,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:21:49,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:49,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:49,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:49,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:49,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:49,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:49,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:49,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:49,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:49,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:49,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:49,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:49,913 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:49,913 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:49,913 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 7 [2022-02-11 01:21:49,945 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:21:49,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:21:50,343 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:21:50,343 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 41 treesize of output 166 [2022-02-11 01:21:50,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:50,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:50,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:50,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:50,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:50,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:50,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:50,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:50,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:50,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:50,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:50,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:50,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:21:50,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:50,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:21:50,934 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 3 [2022-02-11 01:21:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:21:50,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083309907] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:21:50,984 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:21:50,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 30 [2022-02-11 01:21:50,985 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939928365] [2022-02-11 01:21:50,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:21:50,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-11 01:21:50,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:21:50,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-11 01:21:50,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2022-02-11 01:21:50,985 INFO L87 Difference]: Start difference. First operand 8750 states and 21766 transitions. Second operand has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:21:53,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:21:53,691 INFO L93 Difference]: Finished difference Result 9575 states and 23667 transitions. [2022-02-11 01:21:53,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-11 01:21:53,692 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-11 01:21:53,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:21:53,706 INFO L225 Difference]: With dead ends: 9575 [2022-02-11 01:21:53,706 INFO L226 Difference]: Without dead ends: 9555 [2022-02-11 01:21:53,707 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1663 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=740, Invalid=5422, Unknown=0, NotChecked=0, Total=6162 [2022-02-11 01:21:53,707 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 252 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:21:53,707 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 246 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 01:21:53,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9555 states. [2022-02-11 01:21:53,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9555 to 8976. [2022-02-11 01:21:53,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8976 states, 8975 states have (on average 2.4892479108635097) internal successors, (22341), 8975 states have internal predecessors, (22341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:21:53,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8976 states to 8976 states and 22341 transitions. [2022-02-11 01:21:53,862 INFO L78 Accepts]: Start accepts. Automaton has 8976 states and 22341 transitions. Word has length 30 [2022-02-11 01:21:53,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:21:53,862 INFO L470 AbstractCegarLoop]: Abstraction has 8976 states and 22341 transitions. [2022-02-11 01:21:53,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:21:53,862 INFO L276 IsEmpty]: Start isEmpty. Operand 8976 states and 22341 transitions. [2022-02-11 01:21:53,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:21:53,872 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:21:53,873 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:21:53,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-02-11 01:21:54,075 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,SelfDestructingSolverStorable114 [2022-02-11 01:21:54,075 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:21:54,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:21:54,076 INFO L85 PathProgramCache]: Analyzing trace with hash -300802278, now seen corresponding path program 111 times [2022-02-11 01:21:54,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:21:54,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841299902] [2022-02-11 01:21:54,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:21:54,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:21:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:21:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:21:54,174 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:21:54,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841299902] [2022-02-11 01:21:54,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841299902] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:21:54,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183221607] [2022-02-11 01:21:54,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:21:54,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:21:54,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:21:54,175 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:21:54,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-02-11 01:21:54,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-11 01:21:54,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:21:54,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:21:54,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:21:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:21:54,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:21:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:21:54,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183221607] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:21:54,548 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:21:54,548 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2022-02-11 01:21:54,548 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419836815] [2022-02-11 01:21:54,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:21:54,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-11 01:21:54,548 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:21:54,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-11 01:21:54,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=734, Unknown=0, NotChecked=0, Total=930 [2022-02-11 01:21:54,549 INFO L87 Difference]: Start difference. First operand 8976 states and 22341 transitions. Second operand has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:21:55,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:21:55,967 INFO L93 Difference]: Finished difference Result 10585 states and 25843 transitions. [2022-02-11 01:21:55,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-11 01:21:55,967 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:21:55,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:21:55,984 INFO L225 Difference]: With dead ends: 10585 [2022-02-11 01:21:55,984 INFO L226 Difference]: Without dead ends: 10585 [2022-02-11 01:21:55,985 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2399 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2144, Invalid=6412, Unknown=0, NotChecked=0, Total=8556 [2022-02-11 01:21:55,985 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 284 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:21:55,985 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 178 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 01:21:55,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10585 states. [2022-02-11 01:21:56,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10585 to 7908. [2022-02-11 01:21:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7908 states, 7907 states have (on average 2.48197799418237) internal successors, (19625), 7907 states have internal predecessors, (19625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:21:56,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7908 states to 7908 states and 19625 transitions. [2022-02-11 01:21:56,127 INFO L78 Accepts]: Start accepts. Automaton has 7908 states and 19625 transitions. Word has length 32 [2022-02-11 01:21:56,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:21:56,128 INFO L470 AbstractCegarLoop]: Abstraction has 7908 states and 19625 transitions. [2022-02-11 01:21:56,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:21:56,128 INFO L276 IsEmpty]: Start isEmpty. Operand 7908 states and 19625 transitions. [2022-02-11 01:21:56,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:21:56,137 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:21:56,137 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:21:56,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-02-11 01:21:56,339 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,SelfDestructingSolverStorable115 [2022-02-11 01:21:56,339 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:21:56,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:21:56,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1150918110, now seen corresponding path program 112 times [2022-02-11 01:21:56,339 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:21:56,339 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249202433] [2022-02-11 01:21:56,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:21:56,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:21:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:21:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:21:56,425 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:21:56,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249202433] [2022-02-11 01:21:56,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249202433] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:21:56,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498343097] [2022-02-11 01:21:56,425 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:21:56,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:21:56,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:21:56,426 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:21:56,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-02-11 01:21:56,445 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:21:56,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:21:56,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:21:56,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:21:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:21:56,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:21:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:21:56,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498343097] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:21:56,794 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:21:56,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-02-11 01:21:56,794 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656475732] [2022-02-11 01:21:56,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:21:56,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:21:56,794 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:21:56,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:21:56,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:21:56,795 INFO L87 Difference]: Start difference. First operand 7908 states and 19625 transitions. Second operand has 30 states, 30 states have (on average 2.2) internal successors, (66), 29 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:21:58,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:21:58,271 INFO L93 Difference]: Finished difference Result 11962 states and 29058 transitions. [2022-02-11 01:21:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-11 01:21:58,271 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2) internal successors, (66), 29 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:21:58,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:21:58,289 INFO L225 Difference]: With dead ends: 11962 [2022-02-11 01:21:58,289 INFO L226 Difference]: Without dead ends: 11858 [2022-02-11 01:21:58,290 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2503 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2122, Invalid=6434, Unknown=0, NotChecked=0, Total=8556 [2022-02-11 01:21:58,290 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 617 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:21:58,290 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 189 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 01:21:58,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11858 states. [2022-02-11 01:21:58,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11858 to 8382. [2022-02-11 01:21:58,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8382 states, 8381 states have (on average 2.4921847034960027) internal successors, (20887), 8381 states have internal predecessors, (20887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:21:58,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8382 states to 8382 states and 20887 transitions. [2022-02-11 01:21:58,452 INFO L78 Accepts]: Start accepts. Automaton has 8382 states and 20887 transitions. Word has length 32 [2022-02-11 01:21:58,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:21:58,452 INFO L470 AbstractCegarLoop]: Abstraction has 8382 states and 20887 transitions. [2022-02-11 01:21:58,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.2) internal successors, (66), 29 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:21:58,453 INFO L276 IsEmpty]: Start isEmpty. Operand 8382 states and 20887 transitions. [2022-02-11 01:21:58,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:21:58,462 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:21:58,462 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:21:58,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-02-11 01:21:58,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:21:58,663 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:21:58,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:21:58,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1474861086, now seen corresponding path program 113 times [2022-02-11 01:21:58,663 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:21:58,663 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164008642] [2022-02-11 01:21:58,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:21:58,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:21:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:21:58,734 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:21:58,734 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:21:58,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164008642] [2022-02-11 01:21:58,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164008642] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:21:58,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391021789] [2022-02-11 01:21:58,734 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:21:58,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:21:58,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:21:58,735 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:21:58,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-02-11 01:21:58,756 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-11 01:21:58,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:21:58,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:21:58,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:21:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:21:58,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:21:59,211 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:21:59,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391021789] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:21:59,211 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:21:59,212 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 30 [2022-02-11 01:21:59,212 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598915404] [2022-02-11 01:21:59,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:21:59,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-11 01:21:59,212 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:21:59,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-11 01:21:59,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2022-02-11 01:21:59,212 INFO L87 Difference]: Start difference. First operand 8382 states and 20887 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:01,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:01,141 INFO L93 Difference]: Finished difference Result 14128 states and 34642 transitions. [2022-02-11 01:22:01,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-11 01:22:01,141 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:01,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:01,166 INFO L225 Difference]: With dead ends: 14128 [2022-02-11 01:22:01,166 INFO L226 Difference]: Without dead ends: 14116 [2022-02-11 01:22:01,166 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5451 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3893, Invalid=10149, Unknown=0, NotChecked=0, Total=14042 [2022-02-11 01:22:01,167 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 498 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:01,167 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 244 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 01:22:01,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14116 states. [2022-02-11 01:22:01,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14116 to 10452. [2022-02-11 01:22:01,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10452 states, 10451 states have (on average 2.5024399578987655) internal successors, (26153), 10451 states have internal predecessors, (26153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:01,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10452 states to 10452 states and 26153 transitions. [2022-02-11 01:22:01,370 INFO L78 Accepts]: Start accepts. Automaton has 10452 states and 26153 transitions. Word has length 32 [2022-02-11 01:22:01,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:01,370 INFO L470 AbstractCegarLoop]: Abstraction has 10452 states and 26153 transitions. [2022-02-11 01:22:01,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:01,370 INFO L276 IsEmpty]: Start isEmpty. Operand 10452 states and 26153 transitions. [2022-02-11 01:22:01,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:22:01,380 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:01,380 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:01,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-02-11 01:22:01,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:01,581 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:01,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:01,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1806539874, now seen corresponding path program 114 times [2022-02-11 01:22:01,581 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:01,581 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024601653] [2022-02-11 01:22:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:01,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:01,649 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:01,649 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:01,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024601653] [2022-02-11 01:22:01,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024601653] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:01,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000632439] [2022-02-11 01:22:01,649 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:22:01,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:01,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:01,650 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:01,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-02-11 01:22:01,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-11 01:22:01,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:22:01,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:22:01,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:01,927 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:01,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:02,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000632439] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:02,100 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:02,100 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 29 [2022-02-11 01:22:02,100 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281269353] [2022-02-11 01:22:02,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:02,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:22:02,100 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:02,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:22:02,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:22:02,101 INFO L87 Difference]: Start difference. First operand 10452 states and 26153 transitions. Second operand has 30 states, 30 states have (on average 2.466666666666667) internal successors, (74), 29 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:03,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:03,067 INFO L93 Difference]: Finished difference Result 10899 states and 27011 transitions. [2022-02-11 01:22:03,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-11 01:22:03,068 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.466666666666667) internal successors, (74), 29 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:03,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:03,084 INFO L225 Difference]: With dead ends: 10899 [2022-02-11 01:22:03,085 INFO L226 Difference]: Without dead ends: 10895 [2022-02-11 01:22:03,085 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1634, Invalid=4218, Unknown=0, NotChecked=0, Total=5852 [2022-02-11 01:22:03,086 INFO L934 BasicCegarLoop]: 13 mSDtfsCounter, 256 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:03,086 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 90 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:22:03,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10895 states. [2022-02-11 01:22:03,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10895 to 10388. [2022-02-11 01:22:03,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10388 states, 10387 states have (on average 2.502743814383364) internal successors, (25996), 10387 states have internal predecessors, (25996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:03,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10388 states to 10388 states and 25996 transitions. [2022-02-11 01:22:03,245 INFO L78 Accepts]: Start accepts. Automaton has 10388 states and 25996 transitions. Word has length 32 [2022-02-11 01:22:03,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:03,245 INFO L470 AbstractCegarLoop]: Abstraction has 10388 states and 25996 transitions. [2022-02-11 01:22:03,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.466666666666667) internal successors, (74), 29 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:03,245 INFO L276 IsEmpty]: Start isEmpty. Operand 10388 states and 25996 transitions. [2022-02-11 01:22:03,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:22:03,256 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:03,256 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:03,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-02-11 01:22:03,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2022-02-11 01:22:03,456 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:03,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:03,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2054156772, now seen corresponding path program 115 times [2022-02-11 01:22:03,457 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:03,457 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25647397] [2022-02-11 01:22:03,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:03,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 27 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:22:03,524 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:03,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25647397] [2022-02-11 01:22:03,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25647397] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:03,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747627055] [2022-02-11 01:22:03,524 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:22:03,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:03,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:03,525 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:03,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-02-11 01:22:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:03,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:22:03,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:03,759 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:03,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:03,958 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:03,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747627055] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:03,958 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:03,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 29 [2022-02-11 01:22:03,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381221407] [2022-02-11 01:22:03,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:03,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:22:03,958 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:03,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:22:03,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:22:03,959 INFO L87 Difference]: Start difference. First operand 10388 states and 25996 transitions. Second operand has 30 states, 30 states have (on average 2.5) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:05,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:05,128 INFO L93 Difference]: Finished difference Result 13056 states and 32403 transitions. [2022-02-11 01:22:05,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-11 01:22:05,128 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.5) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:05,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:05,153 INFO L225 Difference]: With dead ends: 13056 [2022-02-11 01:22:05,153 INFO L226 Difference]: Without dead ends: 13041 [2022-02-11 01:22:05,154 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1666 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1592, Invalid=4260, Unknown=0, NotChecked=0, Total=5852 [2022-02-11 01:22:05,154 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 441 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:05,154 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 132 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 01:22:05,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13041 states. [2022-02-11 01:22:05,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13041 to 10636. [2022-02-11 01:22:05,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10636 states, 10635 states have (on average 2.510766337564645) internal successors, (26702), 10635 states have internal predecessors, (26702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10636 states to 10636 states and 26702 transitions. [2022-02-11 01:22:05,357 INFO L78 Accepts]: Start accepts. Automaton has 10636 states and 26702 transitions. Word has length 32 [2022-02-11 01:22:05,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:05,357 INFO L470 AbstractCegarLoop]: Abstraction has 10636 states and 26702 transitions. [2022-02-11 01:22:05,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.5) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:05,357 INFO L276 IsEmpty]: Start isEmpty. Operand 10636 states and 26702 transitions. [2022-02-11 01:22:05,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:22:05,367 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:05,367 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:05,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-02-11 01:22:05,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:05,568 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:05,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:05,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1796277502, now seen corresponding path program 116 times [2022-02-11 01:22:05,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:05,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437903248] [2022-02-11 01:22:05,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:05,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:05,638 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:05,638 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:05,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437903248] [2022-02-11 01:22:05,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437903248] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:05,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193091170] [2022-02-11 01:22:05,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:22:05,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:05,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:05,639 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:05,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-02-11 01:22:05,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:22:05,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:22:05,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:22:05,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:05,922 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:05,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:06,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193091170] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:06,080 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:06,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 29 [2022-02-11 01:22:06,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891093262] [2022-02-11 01:22:06,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:06,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:22:06,080 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:06,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:22:06,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:22:06,081 INFO L87 Difference]: Start difference. First operand 10636 states and 26702 transitions. Second operand has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:07,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:07,059 INFO L93 Difference]: Finished difference Result 11860 states and 29329 transitions. [2022-02-11 01:22:07,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-11 01:22:07,060 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:07,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:07,079 INFO L225 Difference]: With dead ends: 11860 [2022-02-11 01:22:07,079 INFO L226 Difference]: Without dead ends: 11844 [2022-02-11 01:22:07,080 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1741 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1639, Invalid=4367, Unknown=0, NotChecked=0, Total=6006 [2022-02-11 01:22:07,080 INFO L934 BasicCegarLoop]: 20 mSDtfsCounter, 249 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:07,080 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 151 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 01:22:07,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11844 states. [2022-02-11 01:22:07,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11844 to 10828. [2022-02-11 01:22:07,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10828 states, 10827 states have (on average 2.5161171146208554) internal successors, (27242), 10827 states have internal predecessors, (27242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10828 states to 10828 states and 27242 transitions. [2022-02-11 01:22:07,236 INFO L78 Accepts]: Start accepts. Automaton has 10828 states and 27242 transitions. Word has length 32 [2022-02-11 01:22:07,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:07,237 INFO L470 AbstractCegarLoop]: Abstraction has 10828 states and 27242 transitions. [2022-02-11 01:22:07,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:07,237 INFO L276 IsEmpty]: Start isEmpty. Operand 10828 states and 27242 transitions. [2022-02-11 01:22:07,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:22:07,247 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:07,247 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:07,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-02-11 01:22:07,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:07,448 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:07,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash -484301822, now seen corresponding path program 117 times [2022-02-11 01:22:07,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:07,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703860830] [2022-02-11 01:22:07,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:07,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:07,522 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:07,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703860830] [2022-02-11 01:22:07,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703860830] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:07,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500332754] [2022-02-11 01:22:07,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:22:07,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:07,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:07,523 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:07,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-02-11 01:22:07,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-02-11 01:22:07,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:22:07,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:22:07,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:07,774 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:07,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:07,928 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:07,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500332754] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:07,929 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:07,929 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 29 [2022-02-11 01:22:07,929 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559037199] [2022-02-11 01:22:07,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:07,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:22:07,929 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:07,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:22:07,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=650, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:22:07,930 INFO L87 Difference]: Start difference. First operand 10828 states and 27242 transitions. Second operand has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:08,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:08,956 INFO L93 Difference]: Finished difference Result 12409 states and 30669 transitions. [2022-02-11 01:22:08,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-11 01:22:08,957 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:08,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:08,977 INFO L225 Difference]: With dead ends: 12409 [2022-02-11 01:22:08,977 INFO L226 Difference]: Without dead ends: 12383 [2022-02-11 01:22:08,978 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1880 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1652, Invalid=4510, Unknown=0, NotChecked=0, Total=6162 [2022-02-11 01:22:08,978 INFO L934 BasicCegarLoop]: 20 mSDtfsCounter, 273 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:08,978 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 175 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 01:22:08,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12383 states. [2022-02-11 01:22:09,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12383 to 10973. [2022-02-11 01:22:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10973 states, 10972 states have (on average 2.5203244622675904) internal successors, (27653), 10972 states have internal predecessors, (27653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:09,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10973 states to 10973 states and 27653 transitions. [2022-02-11 01:22:09,136 INFO L78 Accepts]: Start accepts. Automaton has 10973 states and 27653 transitions. Word has length 32 [2022-02-11 01:22:09,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:09,136 INFO L470 AbstractCegarLoop]: Abstraction has 10973 states and 27653 transitions. [2022-02-11 01:22:09,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:09,136 INFO L276 IsEmpty]: Start isEmpty. Operand 10973 states and 27653 transitions. [2022-02-11 01:22:09,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:22:09,147 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:09,147 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:09,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-02-11 01:22:09,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121 [2022-02-11 01:22:09,351 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:09,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:09,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1898908930, now seen corresponding path program 118 times [2022-02-11 01:22:09,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:09,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171286036] [2022-02-11 01:22:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:09,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:09,431 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:09,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171286036] [2022-02-11 01:22:09,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171286036] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:09,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491345241] [2022-02-11 01:22:09,431 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:22:09,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:09,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:09,432 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:09,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-02-11 01:22:09,451 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:22:09,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:22:09,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:22:09,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:09,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:09,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491345241] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:09,809 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:09,809 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 29 [2022-02-11 01:22:09,809 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395091241] [2022-02-11 01:22:09,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:09,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:22:09,809 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:09,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:22:09,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:22:09,809 INFO L87 Difference]: Start difference. First operand 10973 states and 27653 transitions. Second operand has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:10,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:10,815 INFO L93 Difference]: Finished difference Result 12772 states and 31586 transitions. [2022-02-11 01:22:10,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-11 01:22:10,815 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:10,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:10,870 INFO L225 Difference]: With dead ends: 12772 [2022-02-11 01:22:10,870 INFO L226 Difference]: Without dead ends: 12742 [2022-02-11 01:22:10,870 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1970 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1673, Invalid=4647, Unknown=0, NotChecked=0, Total=6320 [2022-02-11 01:22:10,870 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 364 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:10,870 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 136 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:22:10,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12742 states. [2022-02-11 01:22:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12742 to 9625. [2022-02-11 01:22:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9625 states, 9624 states have (on average 2.511118038237739) internal successors, (24167), 9624 states have internal predecessors, (24167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:11,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9625 states to 9625 states and 24167 transitions. [2022-02-11 01:22:11,013 INFO L78 Accepts]: Start accepts. Automaton has 9625 states and 24167 transitions. Word has length 32 [2022-02-11 01:22:11,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:11,013 INFO L470 AbstractCegarLoop]: Abstraction has 9625 states and 24167 transitions. [2022-02-11 01:22:11,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:11,013 INFO L276 IsEmpty]: Start isEmpty. Operand 9625 states and 24167 transitions. [2022-02-11 01:22:11,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:22:11,022 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:11,022 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:11,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-02-11 01:22:11,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-02-11 01:22:11,223 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:11,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:11,223 INFO L85 PathProgramCache]: Analyzing trace with hash 384942132, now seen corresponding path program 119 times [2022-02-11 01:22:11,223 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:11,223 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272985952] [2022-02-11 01:22:11,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:11,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:11,322 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:22:11,322 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:11,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272985952] [2022-02-11 01:22:11,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272985952] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:11,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924098] [2022-02-11 01:22:11,322 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:22:11,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:11,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:11,323 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:11,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-02-11 01:22:11,345 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-11 01:22:11,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:22:11,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:22:11,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:11,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:11,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924098] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:11,740 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:11,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-02-11 01:22:11,741 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040058684] [2022-02-11 01:22:11,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:11,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-11 01:22:11,741 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:11,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-11 01:22:11,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=853, Unknown=0, NotChecked=0, Total=1056 [2022-02-11 01:22:11,741 INFO L87 Difference]: Start difference. First operand 9625 states and 24167 transitions. Second operand has 33 states, 33 states have (on average 2.303030303030303) internal successors, (76), 32 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:13,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:13,271 INFO L93 Difference]: Finished difference Result 11567 states and 28032 transitions. [2022-02-11 01:22:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-11 01:22:13,272 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.303030303030303) internal successors, (76), 32 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:13,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:13,318 INFO L225 Difference]: With dead ends: 11567 [2022-02-11 01:22:13,318 INFO L226 Difference]: Without dead ends: 11567 [2022-02-11 01:22:13,319 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2891 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2368, Invalid=6944, Unknown=0, NotChecked=0, Total=9312 [2022-02-11 01:22:13,319 INFO L934 BasicCegarLoop]: 21 mSDtfsCounter, 364 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:13,319 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 251 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 01:22:13,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11567 states. [2022-02-11 01:22:13,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11567 to 9011. [2022-02-11 01:22:13,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9011 states, 9010 states have (on average 2.4963374028856826) internal successors, (22492), 9010 states have internal predecessors, (22492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:13,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9011 states to 9011 states and 22492 transitions. [2022-02-11 01:22:13,487 INFO L78 Accepts]: Start accepts. Automaton has 9011 states and 22492 transitions. Word has length 32 [2022-02-11 01:22:13,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:13,487 INFO L470 AbstractCegarLoop]: Abstraction has 9011 states and 22492 transitions. [2022-02-11 01:22:13,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.303030303030303) internal successors, (76), 32 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:13,487 INFO L276 IsEmpty]: Start isEmpty. Operand 9011 states and 22492 transitions. [2022-02-11 01:22:13,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:22:13,496 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:13,496 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:13,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-02-11 01:22:13,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-02-11 01:22:13,697 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:13,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:13,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1781805508, now seen corresponding path program 120 times [2022-02-11 01:22:13,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:13,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263730135] [2022-02-11 01:22:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:13,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:13,778 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:22:13,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:13,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263730135] [2022-02-11 01:22:13,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263730135] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:13,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301499241] [2022-02-11 01:22:13,778 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:22:13,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:13,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:13,779 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:13,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-02-11 01:22:13,800 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 01:22:13,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:22:13,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:22:13,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:14,020 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:14,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:14,162 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:14,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301499241] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:14,162 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:14,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 29 [2022-02-11 01:22:14,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833428493] [2022-02-11 01:22:14,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:14,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:22:14,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:14,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:22:14,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=661, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:22:14,163 INFO L87 Difference]: Start difference. First operand 9011 states and 22492 transitions. Second operand has 30 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 29 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:15,209 INFO L93 Difference]: Finished difference Result 10374 states and 25301 transitions. [2022-02-11 01:22:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-11 01:22:15,209 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 29 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:15,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:15,225 INFO L225 Difference]: With dead ends: 10374 [2022-02-11 01:22:15,225 INFO L226 Difference]: Without dead ends: 10308 [2022-02-11 01:22:15,226 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1903 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1524, Invalid=4638, Unknown=0, NotChecked=0, Total=6162 [2022-02-11 01:22:15,226 INFO L934 BasicCegarLoop]: 19 mSDtfsCounter, 404 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:15,226 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 159 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 01:22:15,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10308 states. [2022-02-11 01:22:15,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10308 to 9005. [2022-02-11 01:22:15,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9005 states, 9004 states have (on average 2.4955575299866726) internal successors, (22470), 9004 states have internal predecessors, (22470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:15,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9005 states to 9005 states and 22470 transitions. [2022-02-11 01:22:15,377 INFO L78 Accepts]: Start accepts. Automaton has 9005 states and 22470 transitions. Word has length 32 [2022-02-11 01:22:15,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:15,377 INFO L470 AbstractCegarLoop]: Abstraction has 9005 states and 22470 transitions. [2022-02-11 01:22:15,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 29 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:15,377 INFO L276 IsEmpty]: Start isEmpty. Operand 9005 states and 22470 transitions. [2022-02-11 01:22:15,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:22:15,386 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:15,386 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:15,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-02-11 01:22:15,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-02-11 01:22:15,587 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:15,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:15,587 INFO L85 PathProgramCache]: Analyzing trace with hash -745683916, now seen corresponding path program 121 times [2022-02-11 01:22:15,587 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:15,587 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005221048] [2022-02-11 01:22:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:15,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:15,676 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:22:15,676 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:15,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005221048] [2022-02-11 01:22:15,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005221048] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:15,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307917924] [2022-02-11 01:22:15,676 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:22:15,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:15,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:15,677 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:15,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-02-11 01:22:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:15,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:22:15,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:15,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:16,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307917924] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:16,112 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:16,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 31 [2022-02-11 01:22:16,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459566109] [2022-02-11 01:22:16,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:16,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:22:16,112 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:16,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:22:16,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=793, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:22:16,112 INFO L87 Difference]: Start difference. First operand 9005 states and 22470 transitions. Second operand has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:17,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:17,733 INFO L93 Difference]: Finished difference Result 11342 states and 27377 transitions. [2022-02-11 01:22:17,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-11 01:22:17,734 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:17,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:17,752 INFO L225 Difference]: With dead ends: 11342 [2022-02-11 01:22:17,752 INFO L226 Difference]: Without dead ends: 11342 [2022-02-11 01:22:17,753 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3866 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2919, Invalid=7793, Unknown=0, NotChecked=0, Total=10712 [2022-02-11 01:22:17,753 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 426 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:17,753 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 285 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 01:22:17,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11342 states. [2022-02-11 01:22:17,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11342 to 8307. [2022-02-11 01:22:17,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8307 states, 8306 states have (on average 2.4753190464724297) internal successors, (20560), 8306 states have internal predecessors, (20560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:17,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8307 states to 8307 states and 20560 transitions. [2022-02-11 01:22:17,908 INFO L78 Accepts]: Start accepts. Automaton has 8307 states and 20560 transitions. Word has length 32 [2022-02-11 01:22:17,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:17,908 INFO L470 AbstractCegarLoop]: Abstraction has 8307 states and 20560 transitions. [2022-02-11 01:22:17,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:17,908 INFO L276 IsEmpty]: Start isEmpty. Operand 8307 states and 20560 transitions. [2022-02-11 01:22:17,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:22:17,917 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:17,917 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:17,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-02-11 01:22:18,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:18,118 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:18,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:18,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1530812424, now seen corresponding path program 122 times [2022-02-11 01:22:18,118 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:18,118 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306749786] [2022-02-11 01:22:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:18,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:22:18,189 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:18,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306749786] [2022-02-11 01:22:18,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306749786] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:18,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98918622] [2022-02-11 01:22:18,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:22:18,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:18,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:18,191 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:18,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-02-11 01:22:18,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:22:18,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:22:18,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:22:18,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:18,426 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:18,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:18,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98918622] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:18,577 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:18,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 29 [2022-02-11 01:22:18,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947420967] [2022-02-11 01:22:18,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:18,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:22:18,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:18,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:22:18,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:22:18,578 INFO L87 Difference]: Start difference. First operand 8307 states and 20560 transitions. Second operand has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:19,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:19,530 INFO L93 Difference]: Finished difference Result 10090 states and 24506 transitions. [2022-02-11 01:22:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-11 01:22:19,530 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:19,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:19,544 INFO L225 Difference]: With dead ends: 10090 [2022-02-11 01:22:19,544 INFO L226 Difference]: Without dead ends: 10051 [2022-02-11 01:22:19,545 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1690 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1362, Invalid=4040, Unknown=0, NotChecked=0, Total=5402 [2022-02-11 01:22:19,545 INFO L934 BasicCegarLoop]: 24 mSDtfsCounter, 255 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:19,545 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 187 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 01:22:19,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10051 states. [2022-02-11 01:22:19,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10051 to 8258. [2022-02-11 01:22:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8258 states, 8257 states have (on average 2.4717209640305198) internal successors, (20409), 8257 states have internal predecessors, (20409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:19,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8258 states to 8258 states and 20409 transitions. [2022-02-11 01:22:19,686 INFO L78 Accepts]: Start accepts. Automaton has 8258 states and 20409 transitions. Word has length 32 [2022-02-11 01:22:19,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:19,686 INFO L470 AbstractCegarLoop]: Abstraction has 8258 states and 20409 transitions. [2022-02-11 01:22:19,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:19,686 INFO L276 IsEmpty]: Start isEmpty. Operand 8258 states and 20409 transitions. [2022-02-11 01:22:19,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:22:19,695 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:19,695 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:19,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2022-02-11 01:22:19,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:19,896 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:19,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:19,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1331349556, now seen corresponding path program 123 times [2022-02-11 01:22:19,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:19,897 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345954260] [2022-02-11 01:22:19,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:19,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:22:19,976 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:19,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345954260] [2022-02-11 01:22:19,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345954260] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:19,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192839346] [2022-02-11 01:22:19,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:22:19,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:19,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:19,977 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:19,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-02-11 01:22:19,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-11 01:22:19,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:22:19,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:22:20,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:20,256 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:20,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:20,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192839346] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:20,447 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:20,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 30 [2022-02-11 01:22:20,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963972956] [2022-02-11 01:22:20,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:20,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-11 01:22:20,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:20,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-11 01:22:20,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=728, Unknown=0, NotChecked=0, Total=930 [2022-02-11 01:22:20,448 INFO L87 Difference]: Start difference. First operand 8258 states and 20409 transitions. Second operand has 31 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 30 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:22,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:22,368 INFO L93 Difference]: Finished difference Result 11335 states and 27281 transitions. [2022-02-11 01:22:22,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-11 01:22:22,369 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 30 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:22,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:22,388 INFO L225 Difference]: With dead ends: 11335 [2022-02-11 01:22:22,388 INFO L226 Difference]: Without dead ends: 11335 [2022-02-11 01:22:22,389 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5298 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3777, Invalid=9333, Unknown=0, NotChecked=0, Total=13110 [2022-02-11 01:22:22,390 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 517 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:22,390 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 311 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 01:22:22,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11335 states. [2022-02-11 01:22:22,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11335 to 8765. [2022-02-11 01:22:22,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8765 states, 8764 states have (on average 2.4679370150616156) internal successors, (21629), 8764 states have internal predecessors, (21629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:22,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8765 states to 8765 states and 21629 transitions. [2022-02-11 01:22:22,573 INFO L78 Accepts]: Start accepts. Automaton has 8765 states and 21629 transitions. Word has length 32 [2022-02-11 01:22:22,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:22,574 INFO L470 AbstractCegarLoop]: Abstraction has 8765 states and 21629 transitions. [2022-02-11 01:22:22,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 30 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:22,574 INFO L276 IsEmpty]: Start isEmpty. Operand 8765 states and 21629 transitions. [2022-02-11 01:22:22,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:22:22,583 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:22,583 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:22,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-02-11 01:22:22,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2022-02-11 01:22:22,792 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:22,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:22,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2053455692, now seen corresponding path program 124 times [2022-02-11 01:22:22,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:22,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322158531] [2022-02-11 01:22:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:22,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:22,862 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:22:22,863 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:22,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322158531] [2022-02-11 01:22:22,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322158531] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:22,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103774668] [2022-02-11 01:22:22,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:22:22,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:22,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:22,864 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:22,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-02-11 01:22:22,884 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:22:22,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:22:22,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:22:22,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:23,110 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:23,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:23,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103774668] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:23,281 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:23,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 29 [2022-02-11 01:22:23,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625799129] [2022-02-11 01:22:23,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:23,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:22:23,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:23,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:22:23,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=650, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:22:23,282 INFO L87 Difference]: Start difference. First operand 8765 states and 21629 transitions. Second operand has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:24,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:24,165 INFO L93 Difference]: Finished difference Result 9947 states and 24230 transitions. [2022-02-11 01:22:24,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-11 01:22:24,165 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:24,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:24,180 INFO L225 Difference]: With dead ends: 9947 [2022-02-11 01:22:24,180 INFO L226 Difference]: Without dead ends: 9929 [2022-02-11 01:22:24,181 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1295, Invalid=3675, Unknown=0, NotChecked=0, Total=4970 [2022-02-11 01:22:24,181 INFO L934 BasicCegarLoop]: 23 mSDtfsCounter, 231 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:24,181 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 169 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 01:22:24,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9929 states. [2022-02-11 01:22:24,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9929 to 8876. [2022-02-11 01:22:24,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8876 states, 8875 states have (on average 2.468732394366197) internal successors, (21910), 8875 states have internal predecessors, (21910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:24,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8876 states to 8876 states and 21910 transitions. [2022-02-11 01:22:24,311 INFO L78 Accepts]: Start accepts. Automaton has 8876 states and 21910 transitions. Word has length 32 [2022-02-11 01:22:24,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:24,311 INFO L470 AbstractCegarLoop]: Abstraction has 8876 states and 21910 transitions. [2022-02-11 01:22:24,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:24,311 INFO L276 IsEmpty]: Start isEmpty. Operand 8876 states and 21910 transitions. [2022-02-11 01:22:24,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:22:24,321 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:24,321 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:24,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-02-11 01:22:24,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2022-02-11 01:22:24,521 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:24,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:24,521 INFO L85 PathProgramCache]: Analyzing trace with hash 657899504, now seen corresponding path program 125 times [2022-02-11 01:22:24,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:24,522 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83602001] [2022-02-11 01:22:24,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:24,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:22:24,605 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:24,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83602001] [2022-02-11 01:22:24,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83602001] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:24,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683837015] [2022-02-11 01:22:24,605 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:22:24,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:24,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:24,606 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:24,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-02-11 01:22:24,627 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-11 01:22:24,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:22:24,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:22:24,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:24,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:25,062 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:25,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683837015] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:25,063 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:25,063 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 30 [2022-02-11 01:22:25,063 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799634195] [2022-02-11 01:22:25,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:25,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-11 01:22:25,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:25,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-11 01:22:25,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2022-02-11 01:22:25,064 INFO L87 Difference]: Start difference. First operand 8876 states and 21910 transitions. Second operand has 31 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 30 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:27,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:27,276 INFO L93 Difference]: Finished difference Result 14408 states and 35433 transitions. [2022-02-11 01:22:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-11 01:22:27,276 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 30 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:27,302 INFO L225 Difference]: With dead ends: 14408 [2022-02-11 01:22:27,302 INFO L226 Difference]: Without dead ends: 14408 [2022-02-11 01:22:27,304 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7222 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4899, Invalid=12131, Unknown=0, NotChecked=0, Total=17030 [2022-02-11 01:22:27,304 INFO L934 BasicCegarLoop]: 13 mSDtfsCounter, 463 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:27,304 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 286 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:22:27,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14408 states. [2022-02-11 01:22:27,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14408 to 12637. [2022-02-11 01:22:27,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12637 states, 12636 states have (on average 2.5214466603355494) internal successors, (31861), 12636 states have internal predecessors, (31861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:27,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12637 states to 12637 states and 31861 transitions. [2022-02-11 01:22:27,547 INFO L78 Accepts]: Start accepts. Automaton has 12637 states and 31861 transitions. Word has length 32 [2022-02-11 01:22:27,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:27,547 INFO L470 AbstractCegarLoop]: Abstraction has 12637 states and 31861 transitions. [2022-02-11 01:22:27,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 30 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:27,548 INFO L276 IsEmpty]: Start isEmpty. Operand 12637 states and 31861 transitions. [2022-02-11 01:22:27,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:22:27,559 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:27,559 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:27,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-02-11 01:22:27,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-02-11 01:22:27,760 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:27,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:27,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1094181720, now seen corresponding path program 126 times [2022-02-11 01:22:27,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:27,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852563288] [2022-02-11 01:22:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:27,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:27,828 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:22:27,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:27,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852563288] [2022-02-11 01:22:27,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852563288] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:27,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069467699] [2022-02-11 01:22:27,829 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:22:27,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:27,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:27,830 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:27,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-02-11 01:22:27,851 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-11 01:22:27,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:22:27,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:22:27,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:28,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:28,279 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:28,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069467699] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:28,280 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:28,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 29 [2022-02-11 01:22:28,280 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993413530] [2022-02-11 01:22:28,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:28,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:22:28,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:28,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:22:28,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=654, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:22:28,280 INFO L87 Difference]: Start difference. First operand 12637 states and 31861 transitions. Second operand has 30 states, 30 states have (on average 2.466666666666667) internal successors, (74), 29 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:29,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:29,719 INFO L93 Difference]: Finished difference Result 13741 states and 34101 transitions. [2022-02-11 01:22:29,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-11 01:22:29,720 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.466666666666667) internal successors, (74), 29 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:29,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:29,744 INFO L225 Difference]: With dead ends: 13741 [2022-02-11 01:22:29,744 INFO L226 Difference]: Without dead ends: 13737 [2022-02-11 01:22:29,745 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2928 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2532, Invalid=6398, Unknown=0, NotChecked=0, Total=8930 [2022-02-11 01:22:29,745 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 453 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:29,745 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 109 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 01:22:29,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13737 states. [2022-02-11 01:22:29,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13737 to 12489. [2022-02-11 01:22:29,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12489 states, 12488 states have (on average 2.5190582959641254) internal successors, (31458), 12488 states have internal predecessors, (31458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:29,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12489 states to 12489 states and 31458 transitions. [2022-02-11 01:22:29,957 INFO L78 Accepts]: Start accepts. Automaton has 12489 states and 31458 transitions. Word has length 32 [2022-02-11 01:22:29,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:29,957 INFO L470 AbstractCegarLoop]: Abstraction has 12489 states and 31458 transitions. [2022-02-11 01:22:29,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.466666666666667) internal successors, (74), 29 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:29,957 INFO L276 IsEmpty]: Start isEmpty. Operand 12489 states and 31458 transitions. [2022-02-11 01:22:29,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:22:29,968 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:29,968 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:30,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2022-02-11 01:22:30,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:30,169 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:30,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1600527986, now seen corresponding path program 127 times [2022-02-11 01:22:30,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:30,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998410109] [2022-02-11 01:22:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:30,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:22:30,240 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:30,240 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998410109] [2022-02-11 01:22:30,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998410109] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:30,240 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550015352] [2022-02-11 01:22:30,240 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:22:30,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:30,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:30,242 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:30,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-02-11 01:22:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:30,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:22:30,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:30,486 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:30,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:30,670 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:30,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550015352] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:30,670 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:30,671 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 29 [2022-02-11 01:22:30,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038331028] [2022-02-11 01:22:30,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:30,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:22:30,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:30,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:22:30,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:22:30,671 INFO L87 Difference]: Start difference. First operand 12489 states and 31458 transitions. Second operand has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:31,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:31,967 INFO L93 Difference]: Finished difference Result 14347 states and 35676 transitions. [2022-02-11 01:22:31,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-11 01:22:31,967 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:31,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:31,988 INFO L225 Difference]: With dead ends: 14347 [2022-02-11 01:22:31,989 INFO L226 Difference]: Without dead ends: 14335 [2022-02-11 01:22:31,989 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2483 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2173, Invalid=5659, Unknown=0, NotChecked=0, Total=7832 [2022-02-11 01:22:31,989 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 400 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:31,989 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 117 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 01:22:31,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14335 states. [2022-02-11 01:22:32,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14335 to 12923. [2022-02-11 01:22:32,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12923 states, 12922 states have (on average 2.524609193623278) internal successors, (32623), 12922 states have internal predecessors, (32623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12923 states to 12923 states and 32623 transitions. [2022-02-11 01:22:32,203 INFO L78 Accepts]: Start accepts. Automaton has 12923 states and 32623 transitions. Word has length 32 [2022-02-11 01:22:32,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:32,203 INFO L470 AbstractCegarLoop]: Abstraction has 12923 states and 32623 transitions. [2022-02-11 01:22:32,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:32,203 INFO L276 IsEmpty]: Start isEmpty. Operand 12923 states and 32623 transitions. [2022-02-11 01:22:32,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:22:32,214 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:32,214 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:32,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-02-11 01:22:32,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:32,415 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:32,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:32,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1827749366, now seen corresponding path program 128 times [2022-02-11 01:22:32,415 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:32,415 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420159904] [2022-02-11 01:22:32,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:32,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:22:32,489 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:32,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420159904] [2022-02-11 01:22:32,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420159904] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:32,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603450514] [2022-02-11 01:22:32,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:22:32,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:32,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:32,490 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:32,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-02-11 01:22:32,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:22:32,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:22:32,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:22:32,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:32,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:32,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603450514] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:32,888 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:32,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 29 [2022-02-11 01:22:32,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402247373] [2022-02-11 01:22:32,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:32,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:22:32,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:32,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:22:32,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:22:32,889 INFO L87 Difference]: Start difference. First operand 12923 states and 32623 transitions. Second operand has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:34,064 INFO L93 Difference]: Finished difference Result 15734 states and 39180 transitions. [2022-02-11 01:22:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-11 01:22:34,064 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:34,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:34,089 INFO L225 Difference]: With dead ends: 15734 [2022-02-11 01:22:34,089 INFO L226 Difference]: Without dead ends: 15714 [2022-02-11 01:22:34,090 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2255 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1999, Invalid=5311, Unknown=0, NotChecked=0, Total=7310 [2022-02-11 01:22:34,090 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 365 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:34,091 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 131 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 01:22:34,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15714 states. [2022-02-11 01:22:34,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15714 to 14459. [2022-02-11 01:22:34,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14459 states, 14458 states have (on average 2.5336837736893068) internal successors, (36632), 14458 states have internal predecessors, (36632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:34,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14459 states to 14459 states and 36632 transitions. [2022-02-11 01:22:34,363 INFO L78 Accepts]: Start accepts. Automaton has 14459 states and 36632 transitions. Word has length 32 [2022-02-11 01:22:34,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:34,363 INFO L470 AbstractCegarLoop]: Abstraction has 14459 states and 36632 transitions. [2022-02-11 01:22:34,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:34,363 INFO L276 IsEmpty]: Start isEmpty. Operand 14459 states and 36632 transitions. [2022-02-11 01:22:34,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:22:34,375 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:34,375 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:34,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-02-11 01:22:34,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2022-02-11 01:22:34,576 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:34,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:34,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1144163450, now seen corresponding path program 129 times [2022-02-11 01:22:34,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:34,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448675550] [2022-02-11 01:22:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:34,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:34,655 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:22:34,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:34,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448675550] [2022-02-11 01:22:34,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448675550] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:34,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221224312] [2022-02-11 01:22:34,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:22:34,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:34,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:34,657 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:34,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-02-11 01:22:34,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-11 01:22:34,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:22:34,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:22:34,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:34,897 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:34,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:35,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221224312] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:35,044 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:35,044 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 29 [2022-02-11 01:22:35,045 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623715063] [2022-02-11 01:22:35,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:35,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:22:35,045 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:35,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:22:35,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:22:35,045 INFO L87 Difference]: Start difference. First operand 14459 states and 36632 transitions. Second operand has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:36,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:36,227 INFO L93 Difference]: Finished difference Result 17438 states and 43555 transitions. [2022-02-11 01:22:36,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-11 01:22:36,227 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:36,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:36,256 INFO L225 Difference]: With dead ends: 17438 [2022-02-11 01:22:36,256 INFO L226 Difference]: Without dead ends: 17410 [2022-02-11 01:22:36,257 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2263 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1968, Invalid=5342, Unknown=0, NotChecked=0, Total=7310 [2022-02-11 01:22:36,257 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 345 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:36,257 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 139 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 01:22:36,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17410 states. [2022-02-11 01:22:36,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17410 to 16063. [2022-02-11 01:22:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16063 states, 16062 states have (on average 2.541588843232474) internal successors, (40823), 16062 states have internal predecessors, (40823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:36,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16063 states to 16063 states and 40823 transitions. [2022-02-11 01:22:36,579 INFO L78 Accepts]: Start accepts. Automaton has 16063 states and 40823 transitions. Word has length 32 [2022-02-11 01:22:36,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:36,579 INFO L470 AbstractCegarLoop]: Abstraction has 16063 states and 40823 transitions. [2022-02-11 01:22:36,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:36,579 INFO L276 IsEmpty]: Start isEmpty. Operand 16063 states and 40823 transitions. [2022-02-11 01:22:36,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-11 01:22:36,593 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:36,593 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:36,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2022-02-11 01:22:36,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-02-11 01:22:36,793 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:36,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:36,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1348094462, now seen corresponding path program 130 times [2022-02-11 01:22:36,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:36,794 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747102793] [2022-02-11 01:22:36,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:36,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:36,879 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:36,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747102793] [2022-02-11 01:22:36,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747102793] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:36,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840656346] [2022-02-11 01:22:36,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:22:36,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:36,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:36,880 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:36,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-02-11 01:22:36,900 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:22:36,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:22:36,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 01:22:36,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:37,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:37,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840656346] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:37,249 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:37,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-02-11 01:22:37,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800380895] [2022-02-11 01:22:37,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:37,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:22:37,250 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:22:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:22:37,250 INFO L87 Difference]: Start difference. First operand 16063 states and 40823 transitions. Second operand has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:38,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:38,311 INFO L93 Difference]: Finished difference Result 17847 states and 44751 transitions. [2022-02-11 01:22:38,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-11 01:22:38,311 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-11 01:22:38,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:38,345 INFO L225 Difference]: With dead ends: 17847 [2022-02-11 01:22:38,346 INFO L226 Difference]: Without dead ends: 17811 [2022-02-11 01:22:38,346 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2012 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1702, Invalid=4778, Unknown=0, NotChecked=0, Total=6480 [2022-02-11 01:22:38,347 INFO L934 BasicCegarLoop]: 14 mSDtfsCounter, 365 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:38,347 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 147 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:22:38,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17811 states. [2022-02-11 01:22:38,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17811 to 16586. [2022-02-11 01:22:38,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16586 states, 16585 states have (on average 2.5454326198372024) internal successors, (42216), 16585 states have internal predecessors, (42216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:38,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16586 states to 16586 states and 42216 transitions. [2022-02-11 01:22:38,672 INFO L78 Accepts]: Start accepts. Automaton has 16586 states and 42216 transitions. Word has length 32 [2022-02-11 01:22:38,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:38,672 INFO L470 AbstractCegarLoop]: Abstraction has 16586 states and 42216 transitions. [2022-02-11 01:22:38,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:38,672 INFO L276 IsEmpty]: Start isEmpty. Operand 16586 states and 42216 transitions. [2022-02-11 01:22:38,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-11 01:22:38,689 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:38,689 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:38,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-02-11 01:22:38,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-02-11 01:22:38,890 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:38,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:38,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1540614240, now seen corresponding path program 131 times [2022-02-11 01:22:38,890 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:38,890 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307020508] [2022-02-11 01:22:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:38,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:39,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:39,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307020508] [2022-02-11 01:22:39,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307020508] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:39,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160850906] [2022-02-11 01:22:39,248 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:22:39,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:39,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:39,249 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:39,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-02-11 01:22:39,271 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-11 01:22:39,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:22:39,272 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-11 01:22:39,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:39,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:39,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:39,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:39,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:39,840 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:39,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:39,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:39,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:39,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:39,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:39,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:39,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:39,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:39,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:39,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:39,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:39,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:39,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:39,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:39,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:39,848 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 7 [2022-02-11 01:22:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:39,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:22:40,582 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-02-11 01:22:40,582 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 51 treesize of output 256 [2022-02-11 01:22:42,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:42,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:42,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:42,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:42,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:42,471 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 3 [2022-02-11 01:22:42,505 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:42,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160850906] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:22:42,505 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:22:42,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 37 [2022-02-11 01:22:42,505 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529221141] [2022-02-11 01:22:42,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:22:42,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-11 01:22:42,505 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:22:42,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-11 01:22:42,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1273, Unknown=0, NotChecked=0, Total=1406 [2022-02-11 01:22:42,506 INFO L87 Difference]: Start difference. First operand 16586 states and 42216 transitions. Second operand has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:47,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:22:47,176 INFO L93 Difference]: Finished difference Result 22037 states and 54396 transitions. [2022-02-11 01:22:47,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-02-11 01:22:47,176 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-02-11 01:22:47,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:22:47,219 INFO L225 Difference]: With dead ends: 22037 [2022-02-11 01:22:47,219 INFO L226 Difference]: Without dead ends: 22030 [2022-02-11 01:22:47,220 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4450 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1180, Invalid=13826, Unknown=0, NotChecked=0, Total=15006 [2022-02-11 01:22:47,220 INFO L934 BasicCegarLoop]: 20 mSDtfsCounter, 209 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 891 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:22:47,220 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 295 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1094 Invalid, 0 Unknown, 891 Unchecked, 0.7s Time] [2022-02-11 01:22:47,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22030 states. [2022-02-11 01:22:47,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22030 to 17150. [2022-02-11 01:22:47,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17150 states, 17149 states have (on average 2.5389235523937255) internal successors, (43540), 17149 states have internal predecessors, (43540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:47,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17150 states to 17150 states and 43540 transitions. [2022-02-11 01:22:47,543 INFO L78 Accepts]: Start accepts. Automaton has 17150 states and 43540 transitions. Word has length 34 [2022-02-11 01:22:47,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:22:47,543 INFO L470 AbstractCegarLoop]: Abstraction has 17150 states and 43540 transitions. [2022-02-11 01:22:47,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:22:47,543 INFO L276 IsEmpty]: Start isEmpty. Operand 17150 states and 43540 transitions. [2022-02-11 01:22:47,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-11 01:22:47,563 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:22:47,563 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:22:47,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-02-11 01:22:47,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-02-11 01:22:47,764 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:22:47,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:22:47,764 INFO L85 PathProgramCache]: Analyzing trace with hash -483926296, now seen corresponding path program 132 times [2022-02-11 01:22:47,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:22:47,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513717475] [2022-02-11 01:22:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:22:47,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:22:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:22:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:22:48,183 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:22:48,183 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513717475] [2022-02-11 01:22:48,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513717475] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:22:48,183 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663597503] [2022-02-11 01:22:48,183 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:22:48,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:22:48,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:22:48,184 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:22:48,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-02-11 01:22:48,205 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-11 01:22:48,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:22:48,206 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 47 conjunts are in the unsatisfiable core [2022-02-11 01:22:48,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:22:49,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:49,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:49,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:49,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:49,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:49,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:49,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:49,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:49,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:49,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:49,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:49,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:49,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:22:49,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:22:49,517 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:22:49,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 81 treesize of output 95 Received shutdown request... [2022-02-11 01:22:49,770 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-11 01:22:49,788 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-11 01:22:49,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-02-11 01:22:49,799 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-11 01:22:49,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-02-11 01:22:49,983 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 35 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-13-2-1 context. [2022-02-11 01:22:49,985 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-11 01:22:49,985 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-11 01:22:49,987 INFO L733 BasicCegarLoop]: Path program histogram: [132, 2, 2, 1] [2022-02-11 01:22:49,989 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-11 01:22:49,989 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-11 01:22:49,990 INFO L202 PluginConnector]: Adding new model counter-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.02 01:22:49 BasicIcfg [2022-02-11 01:22:49,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-11 01:22:49,991 INFO L158 Benchmark]: Toolchain (without parser) took 805075.77ms. Allocated memory was 197.1MB in the beginning and 848.3MB in the end (delta: 651.2MB). Free memory was 161.2MB in the beginning and 474.5MB in the end (delta: -313.3MB). Peak memory consumption was 339.9MB. Max. memory is 8.0GB. [2022-02-11 01:22:49,991 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.14ms. Allocated memory is still 197.1MB. Free memory was 162.3MB in the beginning and 162.1MB in the end (delta: 150.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-11 01:22:49,991 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.99ms. Allocated memory is still 197.1MB. Free memory was 161.0MB in the beginning and 159.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-11 01:22:49,991 INFO L158 Benchmark]: Boogie Preprocessor took 13.27ms. Allocated memory is still 197.1MB. Free memory was 159.6MB in the beginning and 158.7MB in the end (delta: 930.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-11 01:22:49,991 INFO L158 Benchmark]: RCFGBuilder took 146.07ms. Allocated memory is still 197.1MB. Free memory was 158.5MB in the beginning and 149.7MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-11 01:22:49,991 INFO L158 Benchmark]: TraceAbstraction took 804893.30ms. Allocated memory was 197.1MB in the beginning and 848.3MB in the end (delta: 651.2MB). Free memory was 149.2MB in the beginning and 474.5MB in the end (delta: -325.3MB). Peak memory consumption was 327.3MB. Max. memory is 8.0GB. [2022-02-11 01:22:49,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.14ms. Allocated memory is still 197.1MB. Free memory was 162.3MB in the beginning and 162.1MB in the end (delta: 150.3kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.99ms. Allocated memory is still 197.1MB. Free memory was 161.0MB in the beginning and 159.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.27ms. Allocated memory is still 197.1MB. Free memory was 159.6MB in the beginning and 158.7MB in the end (delta: 930.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 146.07ms. Allocated memory is still 197.1MB. Free memory was 158.5MB in the beginning and 149.7MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 804893.30ms. Allocated memory was 197.1MB in the beginning and 848.3MB in the end (delta: 651.2MB). Free memory was 149.2MB in the beginning and 474.5MB in the end (delta: -325.3MB). Peak memory consumption was 327.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 35 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-13-2-1 context. - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 35 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-13-2-1 context. - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 35 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-13-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 31 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 804.8s, OverallIterations: 137, TraceHistogramMax: 5, PathProgramHistogramMax: 132, EmptinessCheckTime: 0.6s, AutomataDifference: 214.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30280 SdHoareTripleChecker+Valid, 45.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30280 mSDsluCounter, 26159 SdHoareTripleChecker+Invalid, 38.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 21670 IncrementalHoareTripleChecker+Unchecked, 43162 mSDsCounter, 9178 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91485 IncrementalHoareTripleChecker+Invalid, 122333 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9178 mSolverCounterUnsat, 2359 mSDtfsCounter, 91485 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14244 GetRequests, 5087 SyntacticMatches, 577 SemanticMatches, 8580 ConstructedPredicates, 0 IntricatePredicates, 10 DeprecatedPredicates, 203357 ImplicationChecksByTransitivity, 210.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17150occurred in iteration=136, InterpolantAutomatonStates: 6606, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.8s AutomataMinimizationTime, 136 MinimizatonAttempts, 132230 StatesRemovedByMinimization, 136 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 547.5s InterpolantComputationTime, 7306 NumberOfCodeBlocks, 7306 NumberOfCodeBlocksAsserted, 554 NumberOfCheckSat, 10528 ConstructedInterpolants, 596 QuantifiedInterpolants, 193246 SizeOfPredicates, 887 NumberOfNonLiveVariables, 8131 ConjunctsInSsa, 2938 ConjunctsInUnsatCore, 400 InterpolantComputations, 5 PerfectInterpolantSequences, 2163/9768 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown