/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-wrwc.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 00:22:36,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-04 00:22:36,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-04 00:22:36,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-04 00:22:36,739 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-wrwc.epf [2022-03-04 00:22:36,753 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-04 00:22:36,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-04 00:22:36,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-04 00:22:36,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-04 00:22:36,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-04 00:22:36,755 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-04 00:22:36,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-04 00:22:36,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-04 00:22:36,756 INFO L138 SettingsManager]: * Use SBE=true [2022-03-04 00:22:36,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-04 00:22:36,756 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-04 00:22:36,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-04 00:22:36,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-04 00:22:36,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-04 00:22:36,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-04 00:22:36,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-04 00:22:36,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-04 00:22:36,757 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-04 00:22:36,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-04 00:22:36,757 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-04 00:22:36,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-04 00:22:36,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-04 00:22:36,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-04 00:22:36,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-04 00:22:36,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-04 00:22:36,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 00:22:36,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-04 00:22:36,758 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-04 00:22:36,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-04 00:22:36,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-04 00:22:36,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-04 00:22:36,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-04 00:22:36,759 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-04 00:22:36,759 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-04 00:22:36,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-04 00:22:36,759 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-04 00:22:36,759 INFO L138 SettingsManager]: * MCR: Overapproximate write-read-write conflicts=false [2022-03-04 00:22:36,760 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-04 00:22:36,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-04 00:22:36,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-04 00:22:36,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-04 00:22:36,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-04 00:22:36,962 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-04 00:22:36,963 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-04 00:22:36,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/JoinTheForkingThread.bpl [2022-03-04 00:22:36,965 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/JoinTheForkingThread.bpl' [2022-03-04 00:22:36,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-04 00:22:36,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-04 00:22:36,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-04 00:22:36,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-04 00:22:36,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-04 00:22:37,008 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 12:22:36" (1/1) ... [2022-03-04 00:22:37,013 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 12:22:36" (1/1) ... [2022-03-04 00:22:37,018 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-04 00:22:37,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-04 00:22:37,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-04 00:22:37,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-04 00:22:37,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-04 00:22:37,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 12:22:36" (1/1) ... [2022-03-04 00:22:37,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 12:22:36" (1/1) ... [2022-03-04 00:22:37,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 12:22:36" (1/1) ... [2022-03-04 00:22:37,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 12:22:36" (1/1) ... [2022-03-04 00:22:37,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 12:22:36" (1/1) ... [2022-03-04 00:22:37,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 12:22:36" (1/1) ... [2022-03-04 00:22:37,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 12:22:36" (1/1) ... [2022-03-04 00:22:37,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-04 00:22:37,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-04 00:22:37,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-04 00:22:37,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-04 00:22:37,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 12:22:36" (1/1) ... [2022-03-04 00:22:37,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 00:22:37,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 00:22:37,057 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 00:22:37,064 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 00:22:37,088 INFO L124 BoogieDeclarations]: Specification and implementation of procedure bar given in one single declaration [2022-03-04 00:22:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2022-03-04 00:22:37,089 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2022-03-04 00:22:37,089 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-03-04 00:22:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-03-04 00:22:37,089 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-03-04 00:22:37,089 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-04 00:22:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-04 00:22:37,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-04 00:22:37,090 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 00:22:37,126 INFO L234 CfgBuilder]: Building ICFG [2022-03-04 00:22:37,127 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-04 00:22:37,208 INFO L275 CfgBuilder]: Performing block encoding [2022-03-04 00:22:37,214 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-04 00:22:37,214 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-04 00:22:37,215 INFO L202 PluginConnector]: Adding new model JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 12:22:37 BoogieIcfgContainer [2022-03-04 00:22:37,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-04 00:22:37,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-04 00:22:37,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-04 00:22:37,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-04 00:22:37,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 12:22:36" (1/2) ... [2022-03-04 00:22:37,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539b4111 and model type JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 12:22:37, skipping insertion in model container [2022-03-04 00:22:37,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 12:22:37" (2/2) ... [2022-03-04 00:22:37,221 INFO L111 eAbstractionObserver]: Analyzing ICFG JoinTheForkingThread.bpl [2022-03-04 00:22:37,225 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-04 00:22:37,225 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-04 00:22:37,226 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-03-04 00:22:37,226 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-04 00:22:37,258 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 00:22:37,258 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 00:22:37,264 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 00:22:37,265 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 00:22:37,270 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_localVar not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 00:22:37,270 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_nondet not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 00:22:37,270 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 00:22:37,273 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 00:22:37,274 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_localVar not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 00:22:37,274 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_nondet not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 00:22:37,274 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 00:22:37,284 INFO L148 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-03-04 00:22:37,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-04 00:22:37,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 00:22:37,341 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 00:22:37,380 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 00:22:37,404 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-04 00:22:37,409 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=false [2022-03-04 00:22:37,409 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-03-04 00:22:37,478 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 13 transitions and produced 14 states. [2022-03-04 00:22:37,480 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 00:22:37,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 00:22:37,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1225187831, now seen corresponding path program 1 times [2022-03-04 00:22:37,501 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 00:22:37,503 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751413693] [2022-03-04 00:22:37,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 00:22:37,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 00:22:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 00:22:37,647 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 00:22:37,648 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 00:22:37,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751413693] [2022-03-04 00:22:37,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751413693] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-04 00:22:37,649 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-04 00:22:37,649 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-04 00:22:37,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252653728] [2022-03-04 00:22:37,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-04 00:22:37,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-04 00:22:37,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 00:22:37,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-04 00:22:37,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-04 00:22:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 00:22:37,682 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 00:22:37,683 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 00:22:37,683 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 00:22:37,703 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 13 transitions and produced 14 states. [2022-03-04 00:22:37,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 00:22:37,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-04 00:22:37,704 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting barErr0ASSERT_VIOLATIONASSERT === [barErr0ASSERT_VIOLATIONASSERT, fooErr1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-04 00:22:37,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 00:22:37,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1225187932, now seen corresponding path program 1 times [2022-03-04 00:22:37,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 00:22:37,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171374760] [2022-03-04 00:22:37,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 00:22:37,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 00:22:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-04 00:22:37,724 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-04 00:22:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-04 00:22:37,740 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-04 00:22:37,741 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-04 00:22:37,742 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location barErr0ASSERT_VIOLATIONASSERT (5 of 6 remaining) [2022-03-04 00:22:37,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location barErr0ASSERT_VIOLATIONASSERT (4 of 6 remaining) [2022-03-04 00:22:37,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr1INUSE_VIOLATION (3 of 6 remaining) [2022-03-04 00:22:37,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 6 remaining) [2022-03-04 00:22:37,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 6 remaining) [2022-03-04 00:22:37,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooThread1of1ForFork1Err0INUSE_VIOLATION (0 of 6 remaining) [2022-03-04 00:22:37,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-04 00:22:37,757 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-04 00:22:37,763 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-04 00:22:37,764 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-04 00:22:37,811 INFO L202 PluginConnector]: Adding new model JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 12:22:37 BasicIcfg [2022-03-04 00:22:37,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-04 00:22:37,812 INFO L158 Benchmark]: Toolchain (without parser) took 826.97ms. Allocated memory is still 194.0MB. Free memory was 159.1MB in the beginning and 171.4MB in the end (delta: -12.3MB). Peak memory consumption was 45.4MB. Max. memory is 8.0GB. [2022-03-04 00:22:37,812 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.16ms. Allocated memory is still 194.0MB. Free memory is still 160.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-04 00:22:37,812 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.79ms. Allocated memory is still 194.0MB. Free memory was 159.1MB in the beginning and 157.4MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-04 00:22:37,813 INFO L158 Benchmark]: Boogie Preprocessor took 10.58ms. Allocated memory is still 194.0MB. Free memory was 157.4MB in the beginning and 156.6MB in the end (delta: 893.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-04 00:22:37,813 INFO L158 Benchmark]: RCFGBuilder took 183.45ms. Allocated memory is still 194.0MB. Free memory was 156.6MB in the beginning and 148.5MB in the end (delta: 8.1MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-04 00:22:37,813 INFO L158 Benchmark]: TraceAbstraction took 594.72ms. Allocated memory is still 194.0MB. Free memory was 147.9MB in the beginning and 171.4MB in the end (delta: -23.4MB). Peak memory consumption was 32.8MB. Max. memory is 8.0GB. [2022-03-04 00:22:37,815 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 0.16ms. Allocated memory is still 194.0MB. Free memory is still 160.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.79ms. Allocated memory is still 194.0MB. Free memory was 159.1MB in the beginning and 157.4MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.58ms. Allocated memory is still 194.0MB. Free memory was 157.4MB in the beginning and 156.6MB in the end (delta: 893.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 183.45ms. Allocated memory is still 194.0MB. Free memory was 156.6MB in the beginning and 148.5MB in the end (delta: 8.1MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 594.72ms. Allocated memory is still 194.0MB. Free memory was 147.9MB in the beginning and 171.4MB in the end (delta: -23.4MB). Peak memory consumption was 32.8MB. 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: 0.4s, 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, 0.1s 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 00:22:37,873 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 [2022-03-04 00:22:38,068 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...