/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/nested_fork.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-bc289cb [2022-01-28 14:33:39,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-28 14:33:39,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-28 14:33:39,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-28 14:33:39,291 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.epf [2022-01-28 14:33:39,309 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-28 14:33:39,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-28 14:33:39,309 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-28 14:33:39,309 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-28 14:33:39,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-28 14:33:39,310 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-28 14:33:39,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-28 14:33:39,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-28 14:33:39,311 INFO L138 SettingsManager]: * Use SBE=true [2022-01-28 14:33:39,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-28 14:33:39,311 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-28 14:33:39,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-28 14:33:39,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-28 14:33:39,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-28 14:33:39,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-28 14:33:39,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-28 14:33:39,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-28 14:33:39,312 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-28 14:33:39,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-28 14:33:39,312 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-28 14:33:39,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-28 14:33:39,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-28 14:33:39,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-28 14:33:39,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-28 14:33:39,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-28 14:33:39,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 14:33:39,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-28 14:33:39,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-28 14:33:39,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-28 14:33:39,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-28 14:33:39,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-28 14:33:39,314 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-28 14:33:39,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-28 14:33:39,314 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-28 14:33:39,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-28 14:33:39,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-28 14:33:39,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-28 14:33:39,557 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-28 14:33:39,559 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-28 14:33:39,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/nested_fork.bpl [2022-01-28 14:33:39,560 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/nested_fork.bpl' [2022-01-28 14:33:39,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-28 14:33:39,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-28 14:33:39,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-28 14:33:39,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-28 14:33:39,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-28 14:33:39,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:33:39" (1/1) ... [2022-01-28 14:33:39,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:33:39" (1/1) ... [2022-01-28 14:33:39,604 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-28 14:33:39,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-28 14:33:39,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-28 14:33:39,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-28 14:33:39,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-28 14:33:39,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:33:39" (1/1) ... [2022-01-28 14:33:39,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:33:39" (1/1) ... [2022-01-28 14:33:39,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:33:39" (1/1) ... [2022-01-28 14:33:39,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:33:39" (1/1) ... [2022-01-28 14:33:39,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:33:39" (1/1) ... [2022-01-28 14:33:39,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:33:39" (1/1) ... [2022-01-28 14:33:39,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:33:39" (1/1) ... [2022-01-28 14:33:39,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-28 14:33:39,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-28 14:33:39,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-28 14:33:39,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-28 14:33:39,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:33:39" (1/1) ... [2022-01-28 14:33:39,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 14:33:39,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 14:33:39,648 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) [2022-01-28 14:33:39,663 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 [2022-01-28 14:33:39,692 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-28 14:33:39,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-28 14:33:39,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-28 14:33:39,692 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-28 14:33:39,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-28 14:33:39,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-28 14:33:39,693 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-28 14:33:39,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-28 14:33:39,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-28 14:33:39,693 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-28 14:33:39,714 INFO L234 CfgBuilder]: Building ICFG [2022-01-28 14:33:39,715 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-28 14:33:39,766 INFO L275 CfgBuilder]: Performing block encoding [2022-01-28 14:33:39,773 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-28 14:33:39,773 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-28 14:33:39,776 INFO L202 PluginConnector]: Adding new model nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:33:39 BoogieIcfgContainer [2022-01-28 14:33:39,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-28 14:33:39,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-28 14:33:39,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-28 14:33:39,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-28 14:33:39,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:33:39" (1/2) ... [2022-01-28 14:33:39,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77009f60 and model type nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:33:39, skipping insertion in model container [2022-01-28 14:33:39,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:33:39" (2/2) ... [2022-01-28 14:33:39,785 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_fork.bpl [2022-01-28 14:33:39,790 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-28 14:33:39,791 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-28 14:33:39,791 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-28 14:33:39,791 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-28 14:33:39,843 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-01-28 14:33:39,897 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-28 14:33:39,903 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 [2022-01-28 14:33:39,906 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-28 14:33:39,917 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 13 transitions, 45 flow [2022-01-28 14:33:39,929 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) [2022-01-28 14:33:39,930 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) [2022-01-28 14:33:39,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-28 14:33:39,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:33:39,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:33:39,936 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, thread1Thread1of1ForFork1Err0INUSE_VIOLATION] === [2022-01-28 14:33:39,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:33:39,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1046046927, now seen corresponding path program 1 times [2022-01-28 14:33:39,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:33:39,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108145148] [2022-01-28 14:33:39,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:33:39,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:33:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-28 14:33:40,004 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-28 14:33:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-28 14:33:40,017 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-28 14:33:40,019 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-28 14:33:40,020 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-01-28 14:33:40,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2INUSE_VIOLATION (2 of 4 remaining) [2022-01-28 14:33:40,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-28 14:33:40,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Thread1of1ForFork1Err0INUSE_VIOLATION (0 of 4 remaining) [2022-01-28 14:33:40,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-28 14:33:40,026 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-28 14:33:40,042 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-28 14:33:40,042 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-28 14:33:40,050 INFO L202 PluginConnector]: Adding new model nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 02:33:40 BasicIcfg [2022-01-28 14:33:40,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-28 14:33:40,051 INFO L158 Benchmark]: Toolchain (without parser) took 470.94ms. Allocated memory is still 200.3MB. Free memory was 159.7MB in the beginning and 173.3MB in the end (delta: -13.6MB). Peak memory consumption was 27.5MB. Max. memory is 8.0GB. [2022-01-28 14:33:40,051 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 200.3MB. Free memory is still 160.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-28 14:33:40,052 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.71ms. Allocated memory is still 200.3MB. Free memory was 159.5MB in the beginning and 158.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-28 14:33:40,052 INFO L158 Benchmark]: Boogie Preprocessor took 9.95ms. Allocated memory is still 200.3MB. Free memory was 158.1MB in the beginning and 157.3MB in the end (delta: 824.7kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-28 14:33:40,053 INFO L158 Benchmark]: RCFGBuilder took 159.20ms. Allocated memory is still 200.3MB. Free memory was 157.2MB in the beginning and 149.9MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2022-01-28 14:33:40,053 INFO L158 Benchmark]: TraceAbstraction took 272.18ms. Allocated memory is still 200.3MB. Free memory was 149.5MB in the beginning and 173.3MB in the end (delta: -23.8MB). Peak memory consumption was 17.0MB. Max. memory is 8.0GB. [2022-01-28 14:33:40,055 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 0.12ms. Allocated memory is still 200.3MB. Free memory is still 160.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.71ms. Allocated memory is still 200.3MB. Free memory was 159.5MB in the beginning and 158.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 9.95ms. Allocated memory is still 200.3MB. Free memory was 158.1MB in the beginning and 157.3MB in the end (delta: 824.7kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 159.20ms. Allocated memory is still 200.3MB. Free memory was 157.2MB in the beginning and 149.9MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * TraceAbstraction took 272.18ms. Allocated memory is still 200.3MB. Free memory was 149.5MB in the beginning and 173.3MB in the end (delta: -23.8MB). Peak memory consumption was 17.0MB. Max. memory is 8.0GB. * 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! [2022-01-28 14:33:40,090 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...