/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/popl20/horseshoe.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-16 11:11:53,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-16 11:11:53,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-16 11:11:53,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-16 11:11:53,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-16 11:11:53,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-16 11:11:53,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-16 11:11:53,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-16 11:11:53,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-16 11:11:53,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-16 11:11:53,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-16 11:11:53,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-16 11:11:53,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-16 11:11:53,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-16 11:11:53,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-16 11:11:53,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-16 11:11:53,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-16 11:11:53,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-16 11:11:53,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-16 11:11:53,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-16 11:11:53,589 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 [2022-03-16 11:11:53,613 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-16 11:11:53,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-16 11:11:53,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-16 11:11:53,614 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-16 11:11:53,614 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-16 11:11:53,615 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-16 11:11:53,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-16 11:11:53,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-16 11:11:53,615 INFO L138 SettingsManager]: * Use SBE=true [2022-03-16 11:11:53,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-16 11:11:53,616 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-16 11:11:53,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-16 11:11:53,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-16 11:11:53,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-16 11:11:53,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-16 11:11:53,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-16 11:11:53,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-16 11:11:53,617 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-16 11:11:53,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-16 11:11:53,617 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-16 11:11:53,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-16 11:11:53,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-16 11:11:53,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-16 11:11:53,617 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-16 11:11:53,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-16 11:11:53,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 11:11:53,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-16 11:11:53,618 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-16 11:11:53,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-16 11:11:53,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-16 11:11:53,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-16 11:11:53,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-16 11:11:53,619 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-16 11:11:53,619 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-16 11:11:53,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-16 11:11:53,619 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-16 11:11:53,619 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-16 11:11:53,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-16 11:11:53,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-16 11:11:53,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-16 11:11:53,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-16 11:11:53,840 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-16 11:11:53,842 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-16 11:11:53,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/horseshoe.wvr.bpl [2022-03-16 11:11:53,843 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/horseshoe.wvr.bpl' [2022-03-16 11:11:53,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-16 11:11:53,879 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-16 11:11:53,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-16 11:11:53,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-16 11:11:53,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-16 11:11:53,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 11:11:53" (1/1) ... [2022-03-16 11:11:53,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 11:11:53" (1/1) ... [2022-03-16 11:11:53,897 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-16 11:11:53,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-16 11:11:53,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-16 11:11:53,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-16 11:11:53,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-16 11:11:53,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 11:11:53" (1/1) ... [2022-03-16 11:11:53,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 11:11:53" (1/1) ... [2022-03-16 11:11:53,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 11:11:53" (1/1) ... [2022-03-16 11:11:53,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 11:11:53" (1/1) ... [2022-03-16 11:11:53,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 11:11:53" (1/1) ... [2022-03-16 11:11:53,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 11:11:53" (1/1) ... [2022-03-16 11:11:53,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 11:11:53" (1/1) ... [2022-03-16 11:11:53,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-16 11:11:53,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-16 11:11:53,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-16 11:11:53,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-16 11:11:53,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 11:11:53" (1/1) ... [2022-03-16 11:11:53,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 11:11:53,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 11:11:53,944 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) [2022-03-16 11:11:53,969 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 [2022-03-16 11:11:53,978 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-16 11:11:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-16 11:11:53,978 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-16 11:11:53,979 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-16 11:11:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-16 11:11:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-16 11:11:53,979 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-16 11:11:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-16 11:11:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-16 11:11:53,979 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-16 11:11:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-16 11:11:53,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-16 11:11:53,981 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-16 11:11:54,020 INFO L234 CfgBuilder]: Building ICFG [2022-03-16 11:11:54,023 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-16 11:11:54,117 INFO L275 CfgBuilder]: Performing block encoding [2022-03-16 11:11:54,133 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-16 11:11:54,133 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-16 11:11:54,135 INFO L202 PluginConnector]: Adding new model horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 11:11:54 BoogieIcfgContainer [2022-03-16 11:11:54,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-16 11:11:54,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-16 11:11:54,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-16 11:11:54,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-16 11:11:54,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 11:11:53" (1/2) ... [2022-03-16 11:11:54,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375f143f and model type horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 11:11:54, skipping insertion in model container [2022-03-16 11:11:54,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 11:11:54" (2/2) ... [2022-03-16 11:11:54,145 INFO L111 eAbstractionObserver]: Analyzing ICFG horseshoe.wvr.bpl [2022-03-16 11:11:54,148 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-16 11:11:54,148 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-16 11:11:54,148 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-16 11:11:54,149 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-16 11:11:54,175 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-16 11:11:54,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 11:11:54,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 11:11:54,228 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) [2022-03-16 11:11:54,229 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 [2022-03-16 11:11:54,249 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 11:11:54,253 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 [2022-03-16 11:11:54,254 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-16 11:11:56,020 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 257054 transitions and produced 86477 states. [2022-03-16 11:11:56,023 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-16 11:11:56,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 11:11:56,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1891996230, now seen corresponding path program 1 times [2022-03-16 11:11:56,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 11:11:56,037 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552058910] [2022-03-16 11:11:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 11:11:56,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 11:11:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 11:11:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 31 proven. 9538 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-03-16 11:11:58,303 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 11:11:58,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552058910] [2022-03-16 11:11:58,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552058910] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 11:11:58,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833826513] [2022-03-16 11:11:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 11:11:58,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 11:11:58,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 11:11:58,312 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) [2022-03-16 11:11:58,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-16 11:11:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 11:11:58,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 114 conjunts are in the unsatisfiable core [2022-03-16 11:11:58,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 11:12:02,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-16 11:12:02,391 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 11 treesize of output 7 [2022-03-16 11:12:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 31 proven. 9538 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-03-16 11:12:02,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 11:12:03,915 INFO L353 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-03-16 11:12:03,915 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 14 treesize of output 13 [2022-03-16 11:12:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 31 proven. 9538 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-03-16 11:12:04,427 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833826513] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 11:12:04,427 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 11:12:04,428 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 81 [2022-03-16 11:12:04,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104048352] [2022-03-16 11:12:04,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 11:12:04,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-03-16 11:12:04,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 11:12:04,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-03-16 11:12:04,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=6421, Unknown=0, NotChecked=0, Total=6642 [2022-03-16 11:12:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 11:12:04,465 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 11:12:04,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 7.682926829268292) internal successors, (630), 81 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-16 11:12:04,471 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 11:12:13,126 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1022839 transitions and produced 322351 states. [2022-03-16 11:12:13,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-16 11:12:13,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-16 11:12:13,327 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 [2022-03-16 11:12:13,328 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-16 11:12:13,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 11:12:13,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1707702616, now seen corresponding path program 2 times [2022-03-16 11:12:13,329 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 11:12:13,329 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039491720] [2022-03-16 11:12:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 11:12:13,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 11:12:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 11:12:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 19968 backedges. 31 proven. 19543 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2022-03-16 11:12:15,710 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 11:12:15,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039491720] [2022-03-16 11:12:15,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039491720] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 11:12:15,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856719010] [2022-03-16 11:12:15,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-16 11:12:15,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 11:12:15,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 11:12:15,711 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) [2022-03-16 11:12:15,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-16 11:12:15,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-16 11:12:15,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 11:12:15,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 172 conjunts are in the unsatisfiable core [2022-03-16 11:12:15,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 11:12:21,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-16 11:12:21,385 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 13 treesize of output 7 [2022-03-16 11:12:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 19968 backedges. 31 proven. 19543 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2022-03-16 11:12:21,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 11:12:24,178 INFO L353 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-03-16 11:12:24,179 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 14 treesize of output 13 [2022-03-16 11:12:24,844 INFO L134 CoverageAnalysis]: Checked inductivity of 19968 backedges. 31 proven. 19543 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2022-03-16 11:12:24,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856719010] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 11:12:24,844 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 11:12:24,844 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 122 [2022-03-16 11:12:24,844 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685986753] [2022-03-16 11:12:24,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 11:12:24,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-03-16 11:12:24,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 11:12:24,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-03-16 11:12:24,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=14673, Unknown=0, NotChecked=0, Total=15006 [2022-03-16 11:12:24,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 11:12:24,850 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 11:12:24,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 7.2926829268292686) internal successors, (897), 122 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-16 11:12:24,851 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2022-03-16 11:12:24,851 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.