/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/nested_fork.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 14:08:11,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 14:08:11,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 14:08:11,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 14:08:11,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 14:08:11,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 14:08:11,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 14:08:11,422 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 14:08:11,442 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 14:08:11,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 14:08:11,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 14:08:11,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 14:08:11,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 14:08:11,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 14:08:11,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 14:08:11,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 14:08:11,443 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 14:08:11,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 14:08:11,443 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 14:08:11,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 14:08:11,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 14:08:11,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 14:08:11,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 14:08:11,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 14:08:11,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 14:08:11,444 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 14:08:11,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 14:08:11,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 14:08:11,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 14:08:11,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 14:08:11,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 14:08:11,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 14:08:11,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 14:08:11,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 14:08:11,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 14:08:11,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 14:08:11,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 14:08:11,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 14:08:11,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 14:08:11,445 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 14:08:11,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 14:08:11,445 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 14:08:11,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 14:08:11,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 14:08:11,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 14:08:11,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 14:08:11,616 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 14:08:11,616 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 14:08:11,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/nested_fork.bpl [2022-01-18 14:08:11,617 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/nested_fork.bpl' [2022-01-18 14:08:11,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 14:08:11,631 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 14:08:11,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 14:08:11,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 14:08:11,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 14:08:11,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:08:11" (1/1) ... [2022-01-18 14:08:11,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:08:11" (1/1) ... [2022-01-18 14:08:11,648 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 14:08:11,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 14:08:11,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 14:08:11,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 14:08:11,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 14:08:11,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:08:11" (1/1) ... [2022-01-18 14:08:11,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:08:11" (1/1) ... [2022-01-18 14:08:11,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:08:11" (1/1) ... [2022-01-18 14:08:11,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:08:11" (1/1) ... [2022-01-18 14:08:11,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:08:11" (1/1) ... [2022-01-18 14:08:11,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:08:11" (1/1) ... [2022-01-18 14:08:11,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:08:11" (1/1) ... [2022-01-18 14:08:11,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 14:08:11,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 14:08:11,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 14:08:11,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 14:08:11,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:08:11" (1/1) ... [2022-01-18 14:08:11,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 14:08:11,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:08:11,679 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 14:08:11,684 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 14:08:11,705 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 14:08:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 14:08:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 14:08:11,705 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 14:08:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 14:08:11,706 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 14:08:11,706 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 14:08:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 14:08:11,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 14:08:11,706 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 14:08:11,723 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 14:08:11,724 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 14:08:11,762 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 14:08:11,766 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 14:08:11,766 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 14:08:11,767 INFO L202 PluginConnector]: Adding new model nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:08:11 BoogieIcfgContainer [2022-01-18 14:08:11,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 14:08:11,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 14:08:11,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 14:08:11,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 14:08:11,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:08:11" (1/2) ... [2022-01-18 14:08:11,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631a6c7d and model type nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:08:11, skipping insertion in model container [2022-01-18 14:08:11,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:08:11" (2/2) ... [2022-01-18 14:08:11,774 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_fork.bpl [2022-01-18 14:08:11,777 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 14:08:11,777 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 14:08:11,778 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 14:08:11,778 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 14:08:11,813 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-01-18 14:08:11,840 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 14:08:11,845 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 14:08:11,845 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 14:08:11,851 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 13 transitions, 45 flow [2022-01-18 14:08:11,858 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 14:08:11,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 14:08:11,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-18 14:08:11,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:08:11,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:08:11,864 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, thread1Thread1of1ForFork1Err0INUSE_VIOLATION] === [2022-01-18 14:08:11,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:08:11,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1046046927, now seen corresponding path program 1 times [2022-01-18 14:08:11,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:08:11,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313646953] [2022-01-18 14:08:11,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:08:11,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:08:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 14:08:11,933 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 14:08:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 14:08:11,945 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 14:08:11,946 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 14:08:11,947 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-01-18 14:08:11,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 14:08:11,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 14:08:11,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Thread1of1ForFork1Err0INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 14:08:11,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 14:08:11,952 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-18 14:08:11,955 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 14:08:11,955 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 14:08:11,959 INFO L202 PluginConnector]: Adding new model nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 02:08:11 BasicIcfg [2022-01-18 14:08:11,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 14:08:11,960 INFO L158 Benchmark]: Toolchain (without parser) took 328.67ms. Allocated memory is still 398.5MB. Free memory was 359.2MB in the beginning and 366.8MB in the end (delta: -7.6MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 14:08:11,960 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 398.5MB. Free memory is still 360.1MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 14:08:11,961 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.45ms. Allocated memory is still 398.5MB. Free memory was 359.2MB in the beginning and 357.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 14:08:11,961 INFO L158 Benchmark]: Boogie Preprocessor took 7.57ms. Allocated memory is still 398.5MB. Free memory was 357.6MB in the beginning and 356.8MB in the end (delta: 799.0kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 14:08:11,961 INFO L158 Benchmark]: RCFGBuilder took 106.86ms. Allocated memory is still 398.5MB. Free memory was 356.7MB in the beginning and 349.6MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. [2022-01-18 14:08:11,962 INFO L158 Benchmark]: TraceAbstraction took 191.09ms. Allocated memory is still 398.5MB. Free memory was 349.1MB in the beginning and 366.8MB in the end (delta: -17.7MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 14:08:11,963 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 398.5MB. Free memory is still 360.1MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 19.45ms. Allocated memory is still 398.5MB. Free memory was 359.2MB in the beginning and 357.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 7.57ms. Allocated memory is still 398.5MB. Free memory was 357.6MB in the beginning and 356.8MB in the end (delta: 799.0kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 106.86ms. Allocated memory is still 398.5MB. Free memory was 356.7MB in the beginning and 349.6MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. * TraceAbstraction took 191.09ms. Allocated memory is still 398.5MB. Free memory was 349.1MB in the beginning and 366.8MB in the end (delta: -17.7MB). There was no memory consumed. 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: 17]: assertion can be violated assertion can be violated We found a FailurePath: [L14] FORK 0 fork 1 thread1(); [L21] FORK 1 fork 2, 2 thread2(); [L22] JOIN 2 join 2, 2; [L16] JOIN 1 join 1; [L17] 0 assert false; - 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: 13]: 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: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 21 locations, 4 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=8occurred 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, 7 NumberOfCodeBlocks, 7 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 14:08:11,985 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...