/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/regression/JoinTheForkingThread.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-04 04:58:55,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-04 04:58:55,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-04 04:58:55,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-04 04:58:55,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-04 04:58:55,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-04 04:58:55,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-04 04:58:55,856 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 [2022-03-04 04:58:55,893 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-04 04:58:55,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-04 04:58:55,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-04 04:58:55,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-04 04:58:55,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-04 04:58:55,895 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-04 04:58:55,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-04 04:58:55,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-04 04:58:55,896 INFO L138 SettingsManager]: * Use SBE=true [2022-03-04 04:58:55,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-04 04:58:55,896 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-04 04:58:55,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-04 04:58:55,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-04 04:58:55,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-04 04:58:55,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-04 04:58:55,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-04 04:58:55,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-04 04:58:55,898 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-04 04:58:55,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-04 04:58:55,898 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-04 04:58:55,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-04 04:58:55,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-04 04:58:55,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-04 04:58:55,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-04 04:58:55,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-04 04:58:55,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 04:58:55,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-04 04:58:55,900 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-04 04:58:55,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-04 04:58:55,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-04 04:58:55,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-04 04:58:55,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-04 04:58:55,901 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-04 04:58:55,901 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-04 04:58:55,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-04 04:58:55,901 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-04 04:58:55,901 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-04 04:58:55,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-04 04:58:56,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-04 04:58:56,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-04 04:58:56,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-04 04:58:56,160 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-04 04:58:56,160 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-04 04:58:56,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/JoinTheForkingThread.bpl [2022-03-04 04:58:56,161 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/JoinTheForkingThread.bpl' [2022-03-04 04:58:56,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-04 04:58:56,177 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-04 04:58:56,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-04 04:58:56,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-04 04:58:56,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-04 04:58:56,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:58:56" (1/1) ... [2022-03-04 04:58:56,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:58:56" (1/1) ... [2022-03-04 04:58:56,204 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-04 04:58:56,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-04 04:58:56,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-04 04:58:56,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-04 04:58:56,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-04 04:58:56,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:58:56" (1/1) ... [2022-03-04 04:58:56,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:58:56" (1/1) ... [2022-03-04 04:58:56,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:58:56" (1/1) ... [2022-03-04 04:58:56,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:58:56" (1/1) ... [2022-03-04 04:58:56,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:58:56" (1/1) ... [2022-03-04 04:58:56,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:58:56" (1/1) ... [2022-03-04 04:58:56,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:58:56" (1/1) ... [2022-03-04 04:58:56,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-04 04:58:56,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-04 04:58:56,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-04 04:58:56,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-04 04:58:56,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:58:56" (1/1) ... [2022-03-04 04:58:56,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 04:58:56,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 04:58:56,249 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) [2022-03-04 04:58:56,286 INFO L124 BoogieDeclarations]: Specification and implementation of procedure bar given in one single declaration [2022-03-04 04:58:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2022-03-04 04:58:56,286 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2022-03-04 04:58:56,286 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-03-04 04:58:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-03-04 04:58:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-03-04 04:58:56,287 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-04 04:58:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-04 04:58:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-04 04:58:56,288 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-04 04:58:56,275 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 [2022-03-04 04:58:56,338 INFO L234 CfgBuilder]: Building ICFG [2022-03-04 04:58:56,340 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-04 04:58:56,405 INFO L275 CfgBuilder]: Performing block encoding [2022-03-04 04:58:56,410 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-04 04:58:56,411 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-04 04:58:56,413 INFO L202 PluginConnector]: Adding new model JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 04:58:56 BoogieIcfgContainer [2022-03-04 04:58:56,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-04 04:58:56,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-04 04:58:56,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-04 04:58:56,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-04 04:58:56,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:58:56" (1/2) ... [2022-03-04 04:58:56,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8e9ef2 and model type JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 04:58:56, skipping insertion in model container [2022-03-04 04:58:56,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 04:58:56" (2/2) ... [2022-03-04 04:58:56,423 INFO L111 eAbstractionObserver]: Analyzing ICFG JoinTheForkingThread.bpl [2022-03-04 04:58:56,432 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-04 04:58:56,432 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-04 04:58:56,432 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-03-04 04:58:56,432 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-04 04:58:56,461 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:58:56,461 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:58:56,463 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:58:56,463 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:58:56,468 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_localVar not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:58:56,468 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_nondet not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:58:56,468 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:58:56,470 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:58:56,472 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_localVar not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:58:56,472 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_nondet not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:58:56,472 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:58:56,484 INFO L148 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-03-04 04:58:56,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-04 04:58:56,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 04:58:56,521 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) [2022-03-04 04:58:56,522 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 [2022-03-04 04:58:56,586 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-04 04:58:56,591 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 [2022-03-04 04:58:56,591 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-03-04 04:58:56,641 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 13 transitions and produced 14 states. [2022-03-04 04:58:56,643 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [barErr0ASSERT_VIOLATIONASSERT, fooErr1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-04 04:58:56,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 04:58:56,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1225187831, now seen corresponding path program 1 times [2022-03-04 04:58:56,670 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 04:58:56,671 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139255759] [2022-03-04 04:58:56,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 04:58:56,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 04:58:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 04:58:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 04:58:56,777 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 04:58:56,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139255759] [2022-03-04 04:58:56,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139255759] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-04 04:58:56,778 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-04 04:58:56,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-04 04:58:56,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766861918] [2022-03-04 04:58:56,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-04 04:58:56,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-04 04:58:56,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 04:58:56,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-04 04:58:56,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-04 04:58:56,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 04:58:56,805 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 04:58:56,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 04:58:56,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 04:58:56,818 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 13 transitions and produced 14 states. [2022-03-04 04:58:56,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 04:58:56,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-04 04:58:56,819 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting barErr0ASSERT_VIOLATIONASSERT === [barErr0ASSERT_VIOLATIONASSERT, fooErr1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-04 04:58:56,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 04:58:56,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1225187932, now seen corresponding path program 1 times [2022-03-04 04:58:56,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 04:58:56,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19321883] [2022-03-04 04:58:56,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 04:58:56,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 04:58:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-04 04:58:56,830 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-04 04:58:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-04 04:58:56,849 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-04 04:58:56,850 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-04 04:58:56,851 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location barErr0ASSERT_VIOLATIONASSERT (5 of 6 remaining) [2022-03-04 04:58:56,853 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location barErr0ASSERT_VIOLATIONASSERT (4 of 6 remaining) [2022-03-04 04:58:56,853 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr1INUSE_VIOLATION (3 of 6 remaining) [2022-03-04 04:58:56,853 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 6 remaining) [2022-03-04 04:58:56,853 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 6 remaining) [2022-03-04 04:58:56,854 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooThread1of1ForFork1Err0INUSE_VIOLATION (0 of 6 remaining) [2022-03-04 04:58:56,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-04 04:58:56,861 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-04 04:58:56,899 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-04 04:58:56,900 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-04 04:58:56,908 INFO L202 PluginConnector]: Adding new model JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 04:58:56 BasicIcfg [2022-03-04 04:58:56,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-04 04:58:56,909 INFO L158 Benchmark]: Toolchain (without parser) took 732.05ms. Allocated memory was 174.1MB in the beginning and 240.1MB in the end (delta: 66.1MB). Free memory was 131.8MB in the beginning and 213.4MB in the end (delta: -81.6MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-04 04:58:56,910 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 174.1MB. Free memory is still 132.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-04 04:58:56,910 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.80ms. Allocated memory is still 174.1MB. Free memory was 131.8MB in the beginning and 130.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-04 04:58:56,911 INFO L158 Benchmark]: Boogie Preprocessor took 11.72ms. Allocated memory is still 174.1MB. Free memory was 130.2MB in the beginning and 129.4MB in the end (delta: 810.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-04 04:58:56,914 INFO L158 Benchmark]: RCFGBuilder took 193.48ms. Allocated memory is still 174.1MB. Free memory was 129.3MB in the beginning and 121.3MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-04 04:58:56,916 INFO L158 Benchmark]: TraceAbstraction took 494.57ms. Allocated memory was 174.1MB in the beginning and 240.1MB in the end (delta: 66.1MB). Free memory was 120.8MB in the beginning and 213.4MB in the end (delta: -92.6MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-04 04:58:56,918 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 0.09ms. Allocated memory is still 174.1MB. Free memory is still 132.8MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.80ms. Allocated memory is still 174.1MB. Free memory was 131.8MB in the beginning and 130.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 11.72ms. Allocated memory is still 174.1MB. Free memory was 130.2MB in the beginning and 129.4MB in the end (delta: 810.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 193.48ms. Allocated memory is still 174.1MB. Free memory was 129.3MB in the beginning and 121.3MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 494.57ms. Allocated memory was 174.1MB in the beginning and 240.1MB in the end (delta: 66.1MB). Free memory was 120.8MB in the beginning and 213.4MB in the end (delta: -92.6MB). There was no memory consumed. 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 - CounterExampleResult [Line: 45]: assertion can be violated assertion can be violated We found a FailurePath: [L17] 0 x := 0; VAL [x=0] [L18] 0 g := 0; VAL [g=0, x=0] [L20] FORK 0 fork 1 foo(x); VAL [g=0, n=0, x=0] [L29] FORK 1 fork 2 bar(n); VAL [g=0, n=0, n=0, x=0] [L40] 2 res := 23; VAL [g=0, n=0, n=0, res=23, x=0] [L30] 1 g := g + 1; VAL [g=1, n=0, n=0, res=23, x=0] [L31] 1 res := 23; VAL [g=1, n=0, n=0, res=23, res=23, x=0] [L44] JOIN 1 join nondet assign localVar; VAL [g=1, localVar=23, n=0, n=0, nondet=1, res=23, res=23, x=0] [L45] 2 assert false; VAL [g=1, localVar=23, n=0, n=0, nondet=1, res=23, res=23, x=0] - UnprovableResult [Line: 26]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 proved your program to be incorrect! [2022-03-04 04:58:56,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-03-04 04:58:57,145 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 Received shutdown request...