/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-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/fork_in_loop.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-16 21:28:25,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-16 21:28:25,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-16 21:28:25,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-16 21:28:25,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-16 21:28:25,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-16 21:28:25,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-16 21:28:25,426 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-MCRwithoutDepranks-Lazy.epf [2022-03-16 21:28:25,449 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-16 21:28:25,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-16 21:28:25,450 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-16 21:28:25,450 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-16 21:28:25,450 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-16 21:28:25,450 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-16 21:28:25,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-16 21:28:25,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-16 21:28:25,453 INFO L138 SettingsManager]: * Use SBE=true [2022-03-16 21:28:25,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-16 21:28:25,454 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-16 21:28:25,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-16 21:28:25,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-16 21:28:25,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-16 21:28:25,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-16 21:28:25,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-16 21:28:25,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-16 21:28:25,455 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-16 21:28:25,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-16 21:28:25,455 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-16 21:28:25,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-16 21:28:25,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-16 21:28:25,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-16 21:28:25,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-16 21:28:25,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-16 21:28:25,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 21:28:25,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-16 21:28:25,456 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-16 21:28:25,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-16 21:28:25,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-16 21:28:25,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-16 21:28:25,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-16 21:28:25,456 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-16 21:28:25,456 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-16 21:28:25,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-16 21:28:25,456 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-03-16 21:28:25,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-16 21:28:25,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-16 21:28:25,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-16 21:28:25,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-16 21:28:25,670 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-16 21:28:25,671 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-16 21:28:25,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_in_loop.bpl [2022-03-16 21:28:25,672 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_in_loop.bpl' [2022-03-16 21:28:25,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-16 21:28:25,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-16 21:28:25,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-16 21:28:25,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-16 21:28:25,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-16 21:28:25,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:25" (1/1) ... [2022-03-16 21:28:25,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:25" (1/1) ... [2022-03-16 21:28:25,756 INFO L137 Inliner]: procedures = 2, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-16 21:28:25,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-16 21:28:25,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-16 21:28:25,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-16 21:28:25,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-16 21:28:25,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:25" (1/1) ... [2022-03-16 21:28:25,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:25" (1/1) ... [2022-03-16 21:28:25,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:25" (1/1) ... [2022-03-16 21:28:25,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:25" (1/1) ... [2022-03-16 21:28:25,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:25" (1/1) ... [2022-03-16 21:28:25,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:25" (1/1) ... [2022-03-16 21:28:25,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:25" (1/1) ... [2022-03-16 21:28:25,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-16 21:28:25,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-16 21:28:25,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-16 21:28:25,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-16 21:28:25,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:25" (1/1) ... [2022-03-16 21:28:25,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 21:28:25,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:28:25,825 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 21:28:25,826 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 21:28:25,853 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-03-16 21:28:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-03-16 21:28:25,853 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-03-16 21:28:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-16 21:28:25,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-16 21:28:25,854 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 21:28:25,883 INFO L234 CfgBuilder]: Building ICFG [2022-03-16 21:28:25,884 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-16 21:28:25,950 INFO L275 CfgBuilder]: Performing block encoding [2022-03-16 21:28:25,954 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-16 21:28:25,955 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-16 21:28:25,956 INFO L202 PluginConnector]: Adding new model fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 09:28:25 BoogieIcfgContainer [2022-03-16 21:28:25,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-16 21:28:25,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-16 21:28:25,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-16 21:28:25,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-16 21:28:25,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:25" (1/2) ... [2022-03-16 21:28:25,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea2bcbd and model type fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 09:28:25, skipping insertion in model container [2022-03-16 21:28:25,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 09:28:25" (2/2) ... [2022-03-16 21:28:25,961 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_in_loop.bpl [2022-03-16 21:28:25,964 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-16 21:28:25,964 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-16 21:28:25,964 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-16 21:28:25,964 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-16 21:28:25,978 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:25,978 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:25,978 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:25,978 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:25,981 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:25,982 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:25,984 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-03-16 21:28:26,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 21:28:26,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:28:26,033 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 21:28:26,034 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 21:28:26,088 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 21:28:26,092 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=true, mMcrOverapproximateWrwc=true [2022-03-16 21:28:26,093 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-16 21:28:26,150 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 11 transitions and produced 12 states. [2022-03-16 21:28:26,151 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:28:26,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:28:26,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1658350537, now seen corresponding path program 1 times [2022-03-16 21:28:26,161 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:28:26,161 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475932136] [2022-03-16 21:28:26,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:28:26,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:28:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:28:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 21:28:26,251 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:28:26,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475932136] [2022-03-16 21:28:26,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475932136] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 21:28:26,252 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 21:28:26,252 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-16 21:28:26,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949069381] [2022-03-16 21:28:26,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 21:28:26,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-16 21:28:26,256 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:28:26,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-16 21:28:26,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-16 21:28:26,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:28:26,273 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:28:26,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 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 21:28:26,274 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:28:26,316 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 24 transitions and produced 25 states. [2022-03-16 21:28:26,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 21:28:26,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-16 21:28:26,317 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:28:26,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:28:26,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1092586692, now seen corresponding path program 1 times [2022-03-16 21:28:26,317 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:28:26,318 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124482049] [2022-03-16 21:28:26,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:28:26,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:28:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-16 21:28:26,327 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-16 21:28:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-16 21:28:26,343 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-16 21:28:26,343 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-16 21:28:26,344 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 3 remaining) [2022-03-16 21:28:26,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2022-03-16 21:28:26,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 3 remaining) [2022-03-16 21:28:26,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-16 21:28:26,350 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-16 21:28:26,351 WARN L235 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-03-16 21:28:26,351 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-03-16 21:28:26,357 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:26,357 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:26,357 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:26,357 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:26,357 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:26,357 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:26,358 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:26,358 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:26,358 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:26,359 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:26,359 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:26,360 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:26,362 INFO L148 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-03-16 21:28:26,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 21:28:26,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:28:26,365 INFO L229 MonitoredProcess]: Starting monitored process 3 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 21:28:26,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2022-03-16 21:28:26,377 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 21:28:26,378 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=true, mMcrOverapproximateWrwc=true [2022-03-16 21:28:26,378 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-16 21:28:26,399 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 21 transitions and produced 22 states. [2022-03-16 21:28:26,400 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:28:26,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:28:26,416 INFO L85 PathProgramCache]: Analyzing trace with hash 563208564, now seen corresponding path program 1 times [2022-03-16 21:28:26,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:28:26,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842410746] [2022-03-16 21:28:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:28:26,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:28:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:28:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-16 21:28:26,440 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:28:26,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842410746] [2022-03-16 21:28:26,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842410746] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 21:28:26,440 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 21:28:26,441 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-16 21:28:26,441 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895768774] [2022-03-16 21:28:26,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 21:28:26,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-16 21:28:26,441 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:28:26,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-16 21:28:26,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-16 21:28:26,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:28:26,442 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:28:26,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 21:28:26,442 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:28:26,476 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 34 transitions and produced 35 states. [2022-03-16 21:28:26,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 21:28:26,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-16 21:28:26,477 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:28:26,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:28:26,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1981956494, now seen corresponding path program 1 times [2022-03-16 21:28:26,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:28:26,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072822370] [2022-03-16 21:28:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:28:26,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:28:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:28:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-16 21:28:26,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:28:26,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072822370] [2022-03-16 21:28:26,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072822370] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 21:28:26,529 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 21:28:26,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-16 21:28:26,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302969264] [2022-03-16 21:28:26,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 21:28:26,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-16 21:28:26,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:28:26,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-16 21:28:26,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-16 21:28:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:28:26,531 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:28:26,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 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 21:28:26,531 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 21:28:26,531 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:28:26,578 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 43 transitions and produced 44 states. [2022-03-16 21:28:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 21:28:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-16 21:28:26,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-16 21:28:26,579 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:28:26,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:28:26,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2117524965, now seen corresponding path program 1 times [2022-03-16 21:28:26,579 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:28:26,579 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131844580] [2022-03-16 21:28:26,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:28:26,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:28:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-16 21:28:26,589 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-16 21:28:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-16 21:28:26,598 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-16 21:28:26,598 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-16 21:28:26,598 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-16 21:28:26,598 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-16 21:28:26,599 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-16 21:28:26,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-16 21:28:26,616 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-16 21:28:26,619 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-03-16 21:28:26,619 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-16 21:28:26,628 INFO L202 PluginConnector]: Adding new model fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 09:28:26 BasicIcfg [2022-03-16 21:28:26,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-16 21:28:26,629 INFO L158 Benchmark]: Toolchain (without parser) took 928.34ms. Allocated memory was 198.2MB in the beginning and 302.0MB in the end (delta: 103.8MB). Free memory was 158.9MB in the beginning and 250.3MB in the end (delta: -91.4MB). Peak memory consumption was 13.3MB. Max. memory is 8.0GB. [2022-03-16 21:28:26,629 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 198.2MB. Free memory is still 159.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-16 21:28:26,629 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.00ms. Allocated memory is still 198.2MB. Free memory was 158.8MB in the beginning and 157.3MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-16 21:28:26,630 INFO L158 Benchmark]: Boogie Preprocessor took 14.42ms. Allocated memory is still 198.2MB. Free memory was 157.3MB in the beginning and 156.4MB in the end (delta: 942.1kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-16 21:28:26,630 INFO L158 Benchmark]: RCFGBuilder took 182.45ms. Allocated memory is still 198.2MB. Free memory was 156.3MB in the beginning and 148.3MB in the end (delta: 8.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-16 21:28:26,630 INFO L158 Benchmark]: TraceAbstraction took 670.91ms. Allocated memory was 198.2MB in the beginning and 302.0MB in the end (delta: 103.8MB). Free memory was 147.8MB in the beginning and 250.3MB in the end (delta: -102.6MB). Peak memory consumption was 730.1kB. Max. memory is 8.0GB. [2022-03-16 21:28:26,631 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10ms. Allocated memory is still 198.2MB. Free memory is still 159.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 54.00ms. Allocated memory is still 198.2MB. Free memory was 158.8MB in the beginning and 157.3MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.42ms. Allocated memory is still 198.2MB. Free memory was 157.3MB in the beginning and 156.4MB in the end (delta: 942.1kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 182.45ms. Allocated memory is still 198.2MB. Free memory was 156.3MB in the beginning and 148.3MB in the end (delta: 8.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 670.91ms. Allocated memory was 198.2MB in the beginning and 302.0MB in the end (delta: 103.8MB). Free memory was 147.8MB in the beginning and 250.3MB in the end (delta: -102.6MB). Peak memory consumption was 730.1kB. 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 - 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: 35]: assertion can be violated assertion can be violated We found a FailurePath: [L20] 0 x := 1; VAL [x=1] [L22] COND TRUE 0 x < 2 VAL [x=1] [L23] FORK 0 fork x foo(x); VAL [i=1, x=1] [L24] 0 x := x + 1; VAL [i=1, x=2] [L22] COND FALSE 0 !(x < 2) VAL [i=1, x=2] [L26] 0 x := 1; VAL [i=1, x=1] [L42] 1 y := 4; VAL [i=1, x=1, y=4] [L27] JOIN 1 join x; VAL [i=1, x=1, y=4] [L28] COND TRUE 0 x < 3 VAL [i=1, x=1, y=4] [L29] FORK 0 fork x foo(x); VAL [i=1, x=1, y=4] [L30] 0 x := x + 1; VAL [i=1, x=2, y=4] [L28] COND TRUE 0 x < 3 VAL [i=1, x=2, y=4] [L29] FORK 0 fork x foo(x); VAL [i=2, x=2, y=4] [L30] 0 x := x + 1; VAL [i=2, x=3, y=4] [L28] COND FALSE 0 !(x < 3) VAL [i=2, x=3, y=4] [L42] 2 y := 4; VAL [i=2, x=3, y=4] [L42] 3 y := 4; VAL [i=2, x=3, y=4] [L33] JOIN 2 join 1; VAL [i=2, x=3, y=4] [L34] JOIN 3 join 2; VAL [i=2, x=3, y=4] [L35] 0 assert false; VAL [i=2, x=3, y=4] - UnprovableResult [Line: 23]: 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: 29]: 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 4 procedures, 26 locations, 3 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: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 2/2 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 6 procedures, 32 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 52 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 15/15 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! [2022-03-16 21:28:26,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Forceful destruction successful, exit code 0 [2022-03-16 21:28:26,881 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 [2022-03-16 21:28:27,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...