/usr/bin/java -Xmx16000000000 -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-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/example1.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 14:07:07,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 14:07:07,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 14:07:07,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 14:07:07,373 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-FA-NoLbe-Separate.epf [2022-01-18 14:07:07,394 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 14:07:07,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 14:07:07,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 14:07:07,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 14:07:07,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 14:07:07,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 14:07:07,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 14:07:07,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 14:07:07,401 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 14:07:07,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 14:07:07,402 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 14:07:07,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 14:07:07,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 14:07:07,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 14:07:07,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 14:07:07,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 14:07:07,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 14:07:07,403 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 14:07:07,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 14:07:07,403 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 14:07:07,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 14:07:07,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 14:07:07,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 14:07:07,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 14:07:07,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 14:07:07,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 14:07:07,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 14:07:07,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 14:07:07,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 14:07:07,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 14:07:07,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 14:07:07,405 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 14:07:07,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 14:07:07,405 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 14:07:07,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 14:07:07,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 14:07:07,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 14:07:07,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 14:07:07,594 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 14:07:07,595 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 14:07:07,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example1.bpl [2022-01-18 14:07:07,595 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example1.bpl' [2022-01-18 14:07:07,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 14:07:07,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 14:07:07,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 14:07:07,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 14:07:07,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 14:07:07,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:07:07" (1/1) ... [2022-01-18 14:07:07,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:07:07" (1/1) ... [2022-01-18 14:07:07,638 INFO L137 Inliner]: procedures = 3, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 14:07:07,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 14:07:07,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 14:07:07,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 14:07:07,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 14:07:07,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:07:07" (1/1) ... [2022-01-18 14:07:07,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:07:07" (1/1) ... [2022-01-18 14:07:07,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:07:07" (1/1) ... [2022-01-18 14:07:07,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:07:07" (1/1) ... [2022-01-18 14:07:07,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:07:07" (1/1) ... [2022-01-18 14:07:07,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:07:07" (1/1) ... [2022-01-18 14:07:07,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:07:07" (1/1) ... [2022-01-18 14:07:07,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 14:07:07,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 14:07:07,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 14:07:07,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 14:07:07,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:07:07" (1/1) ... [2022-01-18 14:07:07,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 14:07:07,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:07:07,680 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) [2022-01-18 14:07:07,709 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-01-18 14:07:07,709 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-01-18 14:07:07,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 14:07:07,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 14:07:07,710 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 14:07:07,715 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 [2022-01-18 14:07:07,742 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 14:07:07,743 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 14:07:07,782 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 14:07:07,786 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 14:07:07,786 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 14:07:07,787 INFO L202 PluginConnector]: Adding new model example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:07:07 BoogieIcfgContainer [2022-01-18 14:07:07,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 14:07:07,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 14:07:07,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 14:07:07,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 14:07:07,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:07:07" (1/2) ... [2022-01-18 14:07:07,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e52a43 and model type example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:07:07, skipping insertion in model container [2022-01-18 14:07:07,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:07:07" (2/2) ... [2022-01-18 14:07:07,797 INFO L111 eAbstractionObserver]: Analyzing ICFG example1.bpl [2022-01-18 14:07:07,803 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 14:07:07,803 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 14:07:07,803 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 14:07:07,804 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 14:07:07,827 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-01-18 14:07:07,867 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 14:07:07,871 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=FINITE_AUTOMATA, 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 [2022-01-18 14:07:07,871 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-18 14:07:07,877 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 11 transitions, 30 flow [2022-01-18 14:07:07,885 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2022-01-18 14:07:07,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2022-01-18 14:07:07,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-18 14:07:07,890 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:07:07,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:07:07,891 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 14:07:07,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:07:07,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2087027823, now seen corresponding path program 1 times [2022-01-18 14:07:07,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:07:07,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428843852] [2022-01-18 14:07:07,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:07:07,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:07:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 14:07:07,949 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 14:07:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 14:07:07,962 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 14:07:07,964 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 14:07:07,964 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-01-18 14:07:07,966 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-01-18 14:07:07,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 14:07:07,969 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-18 14:07:07,972 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 14:07:07,972 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 14:07:07,978 INFO L202 PluginConnector]: Adding new model example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 02:07:07 BasicIcfg [2022-01-18 14:07:07,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 14:07:07,979 INFO L158 Benchmark]: Toolchain (without parser) took 368.93ms. Allocated memory is still 377.5MB. Free memory was 338.7MB in the beginning and 315.2MB in the end (delta: 23.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2022-01-18 14:07:07,979 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 377.5MB. Free memory is still 339.8MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 14:07:07,979 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.71ms. Allocated memory is still 377.5MB. Free memory was 338.7MB in the beginning and 337.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 14:07:07,980 INFO L158 Benchmark]: Boogie Preprocessor took 11.09ms. Allocated memory is still 377.5MB. Free memory was 337.1MB in the beginning and 336.3MB in the end (delta: 822.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 14:07:07,980 INFO L158 Benchmark]: RCFGBuilder took 136.34ms. Allocated memory is still 377.5MB. Free memory was 336.3MB in the beginning and 328.9MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. [2022-01-18 14:07:07,981 INFO L158 Benchmark]: TraceAbstraction took 189.37ms. Allocated memory is still 377.5MB. Free memory was 328.4MB in the beginning and 315.2MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-18 14:07:07,983 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 377.5MB. Free memory is still 339.8MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.71ms. Allocated memory is still 377.5MB. Free memory was 338.7MB in the beginning and 337.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 11.09ms. Allocated memory is still 377.5MB. Free memory was 337.1MB in the beginning and 336.3MB in the end (delta: 822.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 136.34ms. Allocated memory is still 377.5MB. Free memory was 336.3MB in the beginning and 328.9MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. * TraceAbstraction took 189.37ms. Allocated memory is still 377.5MB. Free memory was 328.4MB in the beginning and 315.2MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 26]: assertion can be violated assertion can be violated We found a FailurePath: [L20] 0 x := 1; VAL [x=1] [L21] FORK 0 fork 1 foo(); VAL [x=1] [L22] 0 n := 2; VAL [n=2, x=1] [L34] 1 n := 1; VAL [n=1, x=1] [L24] JOIN 1 join x; VAL [n=1, x=1] [L25] 0 x := 4; VAL [n=1, x=4] [L26] 0 assert false; VAL [n=1, x=4] - UnprovableResult [Line: 21]: 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 3 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, 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=11occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2022-01-18 14:07:08,012 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...