/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy-NoForkJoinOpt.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp1x3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-02 03:49:19,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-02 03:49:19,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-02 03:49:19,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-02 03:49:19,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-02 03:49:19,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-02 03:49:19,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-02 03:49:19,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-02 03:49:19,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-02 03:49:19,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-02 03:49:19,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-02 03:49:19,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-02 03:49:19,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-02 03:49:19,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-02 03:49:19,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-02 03:49:19,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-02 03:49:19,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-02 03:49:19,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-02 03:49:19,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-02 03:49:19,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-02 03:49:19,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy-NoForkJoinOpt.epf [2022-03-02 03:49:19,485 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-02 03:49:19,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-02 03:49:19,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-02 03:49:19,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-02 03:49:19,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-02 03:49:19,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-02 03:49:19,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-02 03:49:19,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-02 03:49:19,487 INFO L138 SettingsManager]: * Use SBE=true [2022-03-02 03:49:19,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-02 03:49:19,487 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-02 03:49:19,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-02 03:49:19,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-02 03:49:19,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-02 03:49:19,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-02 03:49:19,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-02 03:49:19,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-02 03:49:19,487 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-02 03:49:19,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-02 03:49:19,488 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-02 03:49:19,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-02 03:49:19,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-02 03:49:19,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-02 03:49:19,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-02 03:49:19,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-02 03:49:19,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-02 03:49:19,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-02 03:49:19,488 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-02 03:49:19,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-02 03:49:19,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-02 03:49:19,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-02 03:49:19,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-02 03:49:19,489 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-02 03:49:19,489 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-02 03:49:19,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-02 03:49:19,489 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-02 03:49:19,489 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-02 03:49:19,489 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-02 03:49:19,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-02 03:49:19,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-02 03:49:19,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-02 03:49:19,685 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-02 03:49:19,688 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-02 03:49:19,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp1x3.wvr.bpl [2022-03-02 03:49:19,690 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp1x3.wvr.bpl' [2022-03-02 03:49:19,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-02 03:49:19,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-02 03:49:19,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-02 03:49:19,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-02 03:49:19,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-02 03:49:19,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:49:19" (1/1) ... [2022-03-02 03:49:19,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:49:19" (1/1) ... [2022-03-02 03:49:19,725 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-02 03:49:19,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-02 03:49:19,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-02 03:49:19,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-02 03:49:19,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-02 03:49:19,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:49:19" (1/1) ... [2022-03-02 03:49:19,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:49:19" (1/1) ... [2022-03-02 03:49:19,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:49:19" (1/1) ... [2022-03-02 03:49:19,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:49:19" (1/1) ... [2022-03-02 03:49:19,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:49:19" (1/1) ... [2022-03-02 03:49:19,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:49:19" (1/1) ... [2022-03-02 03:49:19,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:49:19" (1/1) ... [2022-03-02 03:49:19,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-02 03:49:19,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-02 03:49:19,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-02 03:49:19,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-02 03:49:19,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:49:19" (1/1) ... [2022-03-02 03:49:19,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-02 03:49:19,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 03:49:19,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-02 03:49:19,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-02 03:49:19,802 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-02 03:49:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-02 03:49:19,803 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-02 03:49:19,803 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-02 03:49:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-02 03:49:19,803 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-02 03:49:19,803 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-02 03:49:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-02 03:49:19,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-02 03:49:19,804 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-02 03:49:19,834 INFO L234 CfgBuilder]: Building ICFG [2022-03-02 03:49:19,835 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-02 03:49:19,903 INFO L275 CfgBuilder]: Performing block encoding [2022-03-02 03:49:19,907 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-02 03:49:19,908 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-02 03:49:19,909 INFO L202 PluginConnector]: Adding new model exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.03 03:49:19 BoogieIcfgContainer [2022-03-02 03:49:19,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-02 03:49:19,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-02 03:49:19,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-02 03:49:19,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-02 03:49:19,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:49:19" (1/2) ... [2022-03-02 03:49:19,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c84e6c8 and model type exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.03 03:49:19, skipping insertion in model container [2022-03-02 03:49:19,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.03 03:49:19" (2/2) ... [2022-03-02 03:49:19,920 INFO L111 eAbstractionObserver]: Analyzing ICFG exp1x3.wvr.bpl [2022-03-02 03:49:19,927 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-02 03:49:19,928 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-02 03:49:19,928 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-02 03:49:19,928 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-02 03:49:19,949 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-02 03:49:19,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-02 03:49:19,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 03:49:19,990 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-03-02 03:49:19,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-03-02 03:49:20,018 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-02 03:49:20,023 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=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=false, mMcrOverapproximateWrwc=true [2022-03-02 03:49:20,023 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-02 03:49:20,067 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 72 transitions and produced 58 states. [2022-03-02 03:49:20,068 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 03:49:20,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 03:49:20,072 INFO L85 PathProgramCache]: Analyzing trace with hash -288822939, now seen corresponding path program 1 times [2022-03-02 03:49:20,077 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 03:49:20,078 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519775469] [2022-03-02 03:49:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 03:49:20,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 03:49:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 03:49:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 03:49:20,299 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 03:49:20,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519775469] [2022-03-02 03:49:20,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519775469] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 03:49:20,300 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873697750] [2022-03-02 03:49:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 03:49:20,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 03:49:20,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 03:49:20,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-02 03:49:20,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-02 03:49:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 03:49:20,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-02 03:49:20,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 03:49:20,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 03:49:20,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-02 03:49:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 03:49:20,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873697750] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-02 03:49:20,899 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-02 03:49:20,899 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-03-02 03:49:20,902 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997667548] [2022-03-02 03:49:20,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-02 03:49:20,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-02 03:49:20,906 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 03:49:20,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-02 03:49:20,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-02 03:49:20,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 03:49:20,932 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 03:49:20,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-02 03:49:20,934 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 03:49:21,009 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 57 transitions and produced 56 states. [2022-03-02 03:49:21,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 03:49:21,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-02 03:49:21,223 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,SelfDestructingSolverStorable0 [2022-03-02 03:49:21,224 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 03:49:21,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 03:49:21,225 INFO L85 PathProgramCache]: Analyzing trace with hash 286045543, now seen corresponding path program 2 times [2022-03-02 03:49:21,225 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 03:49:21,225 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298833396] [2022-03-02 03:49:21,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 03:49:21,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 03:49:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 03:49:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 03:49:21,295 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 03:49:21,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298833396] [2022-03-02 03:49:21,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298833396] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 03:49:21,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623738362] [2022-03-02 03:49:21,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-02 03:49:21,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 03:49:21,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 03:49:21,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-02 03:49:21,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-02 03:49:21,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-02 03:49:21,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-02 03:49:21,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-02 03:49:21,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 03:49:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 03:49:21,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-02 03:49:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 03:49:21,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623738362] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-02 03:49:21,539 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-02 03:49:21,539 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-02 03:49:21,539 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524541907] [2022-03-02 03:49:21,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-02 03:49:21,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-02 03:49:21,542 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 03:49:21,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-02 03:49:21,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-03-02 03:49:21,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 03:49:21,544 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 03:49:21,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-02 03:49:21,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-02 03:49:21,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 03:49:21,891 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 75 transitions and produced 68 states. [2022-03-02 03:49:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 03:49:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-02 03:49:21,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-02 03:49:22,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 03:49:22,092 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 03:49:22,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 03:49:22,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1471242601, now seen corresponding path program 3 times [2022-03-02 03:49:22,093 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 03:49:22,093 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137920014] [2022-03-02 03:49:22,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 03:49:22,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 03:49:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 03:49:22,168 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 03:49:22,168 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 03:49:22,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137920014] [2022-03-02 03:49:22,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137920014] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 03:49:22,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125732867] [2022-03-02 03:49:22,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-02 03:49:22,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 03:49:22,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 03:49:22,170 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-02 03:49:22,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-02 03:49:22,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-02 03:49:22,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-02 03:49:22,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-02 03:49:22,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 03:49:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 03:49:22,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-02 03:49:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 03:49:22,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125732867] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-02 03:49:22,581 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-02 03:49:22,582 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 8 [2022-03-02 03:49:22,582 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771580293] [2022-03-02 03:49:22,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-02 03:49:22,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-02 03:49:22,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 03:49:22,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-02 03:49:22,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-02 03:49:22,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 03:49:22,583 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 03:49:22,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-02 03:49:22,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-02 03:49:22,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-02 03:49:22,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 03:49:22,655 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 69 transitions and produced 66 states. [2022-03-02 03:49:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 03:49:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-02 03:49:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-02 03:49:22,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-02 03:49:22,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 03:49:22,873 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 03:49:22,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 03:49:22,873 INFO L85 PathProgramCache]: Analyzing trace with hash -615818133, now seen corresponding path program 4 times [2022-03-02 03:49:22,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 03:49:22,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609339282] [2022-03-02 03:49:22,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 03:49:22,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 03:49:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 03:49:22,972 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 03:49:22,973 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 03:49:22,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609339282] [2022-03-02 03:49:22,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609339282] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 03:49:22,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904946322] [2022-03-02 03:49:22,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-02 03:49:22,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 03:49:22,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 03:49:22,974 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-02 03:49:22,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-02 03:49:22,994 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-02 03:49:22,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-02 03:49:22,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-02 03:49:22,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 03:49:23,136 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 03:49:23,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-02 03:49:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 03:49:23,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904946322] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-02 03:49:23,209 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-02 03:49:23,209 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-03-02 03:49:23,210 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648817700] [2022-03-02 03:49:23,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-02 03:49:23,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-02 03:49:23,212 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 03:49:23,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-02 03:49:23,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-03-02 03:49:23,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 03:49:23,214 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 03:49:23,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-02 03:49:23,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-02 03:49:23,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-02 03:49:23,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-02 03:49:23,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 03:49:23,682 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 92 transitions and produced 81 states. [2022-03-02 03:49:23,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 03:49:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-02 03:49:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-02 03:49:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-02 03:49:23,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-02 03:49:23,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 03:49:23,884 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 03:49:23,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 03:49:23,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1931323539, now seen corresponding path program 5 times [2022-03-02 03:49:23,885 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 03:49:23,885 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610010427] [2022-03-02 03:49:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 03:49:23,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 03:49:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 03:49:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 03:49:23,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 03:49:23,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610010427] [2022-03-02 03:49:23,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610010427] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 03:49:23,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928054521] [2022-03-02 03:49:23,969 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-02 03:49:23,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 03:49:23,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 03:49:23,970 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-02 03:49:23,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-02 03:49:24,006 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-02 03:49:24,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-02 03:49:24,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-02 03:49:24,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2022-03-02 04:04:04,676 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-02 04:04:04,677 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 [2022-03-02 04:04:04,677 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-02 04:04:05,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2022-03-02 04:04:05,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2022-03-02 04:04:05,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-02 04:04:07,768 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-02 04:04:07,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-02 04:04:07,768 WARN L594 AbstractCegarLoop]: Verification canceled: while PartialOrderCegarLoop was analyzing trace of length 28 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2022-03-02 04:04:07,770 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-02 04:04:07,770 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-02 04:04:07,795 INFO L732 BasicCegarLoop]: Path program histogram: [5] [2022-03-02 04:04:07,806 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-02 04:04:07,806 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-02 04:04:07,809 INFO L202 PluginConnector]: Adding new model exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.03 04:04:07 BasicIcfg [2022-03-02 04:04:07,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-02 04:04:07,810 INFO L158 Benchmark]: Toolchain (without parser) took 888102.76ms. Allocated memory was 212.9MB in the beginning and 684.7MB in the end (delta: 471.9MB). Free memory was 177.0MB in the beginning and 553.7MB in the end (delta: -376.6MB). Peak memory consumption was 451.2MB. Max. memory is 8.0GB. [2022-03-02 04:04:07,810 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 212.9MB. Free memory is still 178.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-02 04:04:07,810 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.22ms. Allocated memory is still 212.9MB. Free memory was 177.0MB in the beginning and 175.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-02 04:04:07,811 INFO L158 Benchmark]: Boogie Preprocessor took 10.05ms. Allocated memory is still 212.9MB. Free memory was 175.5MB in the beginning and 174.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-02 04:04:07,811 INFO L158 Benchmark]: RCFGBuilder took 168.16ms. Allocated memory is still 212.9MB. Free memory was 174.5MB in the beginning and 166.2MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-02 04:04:07,811 INFO L158 Benchmark]: TraceAbstraction took 887898.97ms. Allocated memory was 212.9MB in the beginning and 684.7MB in the end (delta: 471.9MB). Free memory was 165.6MB in the beginning and 553.7MB in the end (delta: -388.0MB). Peak memory consumption was 439.7MB. Max. memory is 8.0GB. [2022-03-02 04:04:07,813 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 0.10ms. Allocated memory is still 212.9MB. Free memory is still 178.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.22ms. Allocated memory is still 212.9MB. Free memory was 177.0MB in the beginning and 175.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.05ms. Allocated memory is still 212.9MB. Free memory was 175.5MB in the beginning and 174.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 168.16ms. Allocated memory is still 212.9MB. Free memory was 174.5MB in the beginning and 166.2MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 887898.97ms. Allocated memory was 212.9MB in the beginning and 684.7MB in the end (delta: 471.9MB). Free memory was 165.6MB in the beginning and 553.7MB in the end (delta: -388.0MB). Peak memory consumption was 439.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 38]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while PartialOrderCegarLoop was analyzing trace of length 28 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PartialOrderCegarLoop was analyzing trace of length 28 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PartialOrderCegarLoop was analyzing trace of length 28 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 28 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 887.8s, OverallIterations: 5, TraceHistogramMax: 0, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 1.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 176 NumberOfCodeBlocks, 176 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 2080 SizeOfPredicates, 12 NumberOfNonLiveVariables, 158 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 12 InterpolantComputations, 0 PerfectInterpolantSequences, 0/192 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