/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/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/14b-subsequent-blocks.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 15:22:18,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 15:22:18,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 15:22:18,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 15:22:18,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 15:22:18,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 15:22:18,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 15:22:18,744 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 [2022-03-15 15:22:18,758 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 15:22:18,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 15:22:18,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 15:22:18,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 15:22:18,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 15:22:18,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 15:22:18,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 15:22:18,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 15:22:18,760 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 15:22:18,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 15:22:18,760 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 15:22:18,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 15:22:18,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 15:22:18,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 15:22:18,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 15:22:18,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 15:22:18,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 15:22:18,761 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 15:22:18,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 15:22:18,761 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 15:22:18,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 15:22:18,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 15:22:18,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 15:22:18,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 15:22:18,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 15:22:18,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 15:22:18,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 15:22:18,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 15:22:18,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 15:22:18,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 15:22:18,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 15:22:18,763 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 15:22:18,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 15:22:18,763 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 15:22:18,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 15:22:18,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 15:22:18,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 15:22:18,944 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 15:22:18,947 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 15:22:18,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/14b-subsequent-blocks.c [2022-03-15 15:22:18,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e9355da/5f17a96a3a6b4457a98987c014e96f86/FLAGf4b2b5b00 [2022-03-15 15:22:19,364 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 15:22:19,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/14b-subsequent-blocks.c [2022-03-15 15:22:19,365 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-03-15 15:22:19,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e9355da/5f17a96a3a6b4457a98987c014e96f86/FLAGf4b2b5b00 [2022-03-15 15:22:19,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e9355da/5f17a96a3a6b4457a98987c014e96f86 [2022-03-15 15:22:19,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 15:22:19,395 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 15:22:19,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 15:22:19,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 15:22:19,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 15:22:19,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 03:22:19" (1/1) ... [2022-03-15 15:22:19,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4376d748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:22:19, skipping insertion in model container [2022-03-15 15:22:19,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 03:22:19" (1/1) ... [2022-03-15 15:22:19,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 15:22:19,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 15:22:19,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 15:22:19,561 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 15:22:19,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 15:22:19,578 INFO L208 MainTranslator]: Completed translation [2022-03-15 15:22:19,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:22:19 WrapperNode [2022-03-15 15:22:19,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 15:22:19,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 15:22:19,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 15:22:19,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 15:22:19,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:22:19" (1/1) ... [2022-03-15 15:22:19,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:22:19" (1/1) ... [2022-03-15 15:22:19,609 INFO L137 Inliner]: procedures = 10, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2022-03-15 15:22:19,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 15:22:19,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 15:22:19,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 15:22:19,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 15:22:19,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:22:19" (1/1) ... [2022-03-15 15:22:19,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:22:19" (1/1) ... [2022-03-15 15:22:19,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:22:19" (1/1) ... [2022-03-15 15:22:19,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:22:19" (1/1) ... [2022-03-15 15:22:19,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:22:19" (1/1) ... [2022-03-15 15:22:19,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:22:19" (1/1) ... [2022-03-15 15:22:19,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:22:19" (1/1) ... [2022-03-15 15:22:19,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 15:22:19,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 15:22:19,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 15:22:19,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 15:22:19,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:22:19" (1/1) ... [2022-03-15 15:22:19,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 15:22:19,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:19,649 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) [2022-03-15 15:22:19,667 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 [2022-03-15 15:22:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 15:22:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 15:22:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 15:22:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-03-15 15:22:19,679 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-03-15 15:22:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 15:22:19,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 15:22:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 15:22:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 15:22:19,680 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 15:22:19,721 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 15:22:19,722 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 15:22:19,794 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 15:22:19,807 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 15:22:19,807 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 15:22:19,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 03:22:19 BoogieIcfgContainer [2022-03-15 15:22:19,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 15:22:19,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 15:22:19,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 15:22:19,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 15:22:19,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 03:22:19" (1/3) ... [2022-03-15 15:22:19,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a0fb0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 03:22:19, skipping insertion in model container [2022-03-15 15:22:19,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:22:19" (2/3) ... [2022-03-15 15:22:19,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a0fb0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 03:22:19, skipping insertion in model container [2022-03-15 15:22:19,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 03:22:19" (3/3) ... [2022-03-15 15:22:19,833 INFO L111 eAbstractionObserver]: Analyzing ICFG 14b-subsequent-blocks.c [2022-03-15 15:22:19,836 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 15:22:19,836 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 15:22:19,836 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 15:22:19,836 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 15:22:19,866 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:19,867 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:19,867 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:19,867 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:19,867 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:19,867 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:19,868 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:19,868 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:19,868 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:19,868 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:19,868 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:19,869 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:19,872 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:19,873 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:19,873 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:19,873 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:19,874 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-03-15 15:22:19,918 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 15:22:19,929 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, mLazyFiniteAutomaton=false, 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 [2022-03-15 15:22:19,929 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-15 15:22:19,939 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 30 transitions, 65 flow [2022-03-15 15:22:19,955 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 43 states have internal predecessors, (63), 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) [2022-03-15 15:22:19,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 43 states have internal predecessors, (63), 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) [2022-03-15 15:22:19,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 15:22:19,962 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:19,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:19,965 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 15:22:19,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:19,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1133540566, now seen corresponding path program 1 times [2022-03-15 15:22:19,977 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:19,977 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100921616] [2022-03-15 15:22:19,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:19,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:20,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:20,168 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:20,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100921616] [2022-03-15 15:22:20,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100921616] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 15:22:20,169 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 15:22:20,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 15:22:20,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969743482] [2022-03-15 15:22:20,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 15:22:20,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 15:22:20,174 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:20,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 15:22:20,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 15:22:20,199 INFO L87 Difference]: Start difference. First operand has 44 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 43 states have internal predecessors, (63), 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) Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-03-15 15:22:20,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:20,244 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2022-03-15 15:22:20,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 15:22:20,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) Word has length 19 [2022-03-15 15:22:20,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:20,253 INFO L225 Difference]: With dead ends: 48 [2022-03-15 15:22:20,253 INFO L226 Difference]: Without dead ends: 33 [2022-03-15 15:22:20,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 15:22:20,258 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:20,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 65 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 15:22:20,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-15 15:22:20,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-15 15:22:20,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 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) [2022-03-15 15:22:20,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2022-03-15 15:22:20,280 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 19 [2022-03-15 15:22:20,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:20,280 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2022-03-15 15:22:20,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-03-15 15:22:20,281 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2022-03-15 15:22:20,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:22:20,281 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:20,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:20,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 15:22:20,282 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 15:22:20,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:20,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1437334733, now seen corresponding path program 1 times [2022-03-15 15:22:20,282 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:20,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381601117] [2022-03-15 15:22:20,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:20,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 15:22:20,305 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-15 15:22:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 15:22:20,324 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-15 15:22:20,324 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-15 15:22:20,325 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-03-15 15:22:20,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-03-15 15:22:20,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 15:22:20,329 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-15 15:22:20,331 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 15:22:20,331 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 15:22:20,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 03:22:20 BasicIcfg [2022-03-15 15:22:20,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 15:22:20,345 INFO L158 Benchmark]: Toolchain (without parser) took 949.19ms. Allocated memory was 183.5MB in the beginning and 243.3MB in the end (delta: 59.8MB). Free memory was 125.8MB in the beginning and 171.5MB in the end (delta: -45.7MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. [2022-03-15 15:22:20,345 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 183.5MB. Free memory is still 144.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 15:22:20,349 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.72ms. Allocated memory was 183.5MB in the beginning and 243.3MB in the end (delta: 59.8MB). Free memory was 125.5MB in the beginning and 214.5MB in the end (delta: -89.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-15 15:22:20,350 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.38ms. Allocated memory is still 243.3MB. Free memory was 214.5MB in the beginning and 212.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 15:22:20,351 INFO L158 Benchmark]: Boogie Preprocessor took 16.42ms. Allocated memory is still 243.3MB. Free memory was 212.9MB in the beginning and 211.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 15:22:20,351 INFO L158 Benchmark]: RCFGBuilder took 180.56ms. Allocated memory is still 243.3MB. Free memory was 211.9MB in the beginning and 201.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-15 15:22:20,353 INFO L158 Benchmark]: TraceAbstraction took 535.14ms. Allocated memory is still 243.3MB. Free memory was 200.9MB in the beginning and 171.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-03-15 15:22:20,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 183.5MB. Free memory is still 144.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 184.72ms. Allocated memory was 183.5MB in the beginning and 243.3MB in the end (delta: 59.8MB). Free memory was 125.5MB in the beginning and 214.5MB in the end (delta: -89.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.38ms. Allocated memory is still 243.3MB. Free memory was 214.5MB in the beginning and 212.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.42ms. Allocated memory is still 243.3MB. Free memory was 212.9MB in the beginning and 211.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 180.56ms. Allocated memory is still 243.3MB. Free memory was 211.9MB in the beginning and 201.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 535.14ms. Allocated memory is still 243.3MB. Free memory was 200.9MB in the beginning and 171.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. 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: 35]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = -1; VAL [x=-1] [L23] 0 pthread_t threadId; VAL [threadId={2:0}, x=-1] [L24] FCALL, FORK 0 pthread_create(&threadId, NULL, &foo, NULL) VAL [arg={0:0}, pthread_create(&threadId, NULL, &foo, NULL)=-1, threadId={2:0}, x=-1] [L27] 0 x = 1 [L28] 0 x = x + 1 VAL [arg={0:0}, arg={0:0}, threadId={2:0}, x=2] [L18] 1 x = 0 VAL [arg={0:0}, arg={0:0}, x=0] [L31] 0 x = x + 1 [L32] 0 x = x + 1 VAL [arg={0:0}, arg={0:0}, threadId={2:0}, x=2] [L35] 0 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, threadId={2:0}, x=2] - UnprovableResult [Line: 24]: 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, 37 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 28 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-03-15 15:22:20,390 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...