/usr/lib/jvm/java-1.11.0-openjdk-amd64/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-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:21:31,557 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:21:31,594 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:21:31,609 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:21:31,610 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:21:31,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:21:31,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:21:31,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:21:31,611 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:21:31,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:21:31,611 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:21:31,612 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:21:31,612 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:21:31,612 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:21:31,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:21:31,613 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:21:31,613 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:21:31,613 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:21:31,613 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:21:31,614 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:21:31,614 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:21:31,614 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:21:31,614 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:21:31,615 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:21:31,615 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:21:31,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:21:31,615 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:21:31,615 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:21:31,616 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:21:31,616 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:21:31,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:21:31,616 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:21:31,616 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:21:31,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:21:31,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:21:31,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:21:31,825 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:21:31,825 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:21:31,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2023-11-17 11:21:32,902 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:21:33,079 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:21:33,080 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2023-11-17 11:21:33,090 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be0af8e5c/39404e6293564f6cb841607e5047fea6/FLAGbf2d85c93 [2023-11-17 11:21:33,106 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be0af8e5c/39404e6293564f6cb841607e5047fea6 [2023-11-17 11:21:33,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:21:33,109 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:21:33,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:21:33,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:21:33,113 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:21:33,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:21:33" (1/1) ... [2023-11-17 11:21:33,114 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c3c109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:21:33, skipping insertion in model container [2023-11-17 11:21:33,115 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:21:33" (1/1) ... [2023-11-17 11:21:33,153 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:21:33,334 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-11-17 11:21:33,344 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:21:33,352 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:21:33,405 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-11-17 11:21:33,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:21:33,438 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:21:33,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:21:33 WrapperNode [2023-11-17 11:21:33,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:21:33,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:21:33,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:21:33,441 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:21:33,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:21:33" (1/1) ... [2023-11-17 11:21:33,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:21:33" (1/1) ... [2023-11-17 11:21:33,485 INFO L138 Inliner]: procedures = 167, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-11-17 11:21:33,485 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:21:33,486 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:21:33,486 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:21:33,486 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:21:33,492 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:21:33" (1/1) ... [2023-11-17 11:21:33,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:21:33" (1/1) ... [2023-11-17 11:21:33,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:21:33" (1/1) ... [2023-11-17 11:21:33,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:21:33" (1/1) ... [2023-11-17 11:21:33,507 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:21:33" (1/1) ... [2023-11-17 11:21:33,510 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:21:33" (1/1) ... [2023-11-17 11:21:33,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:21:33" (1/1) ... [2023-11-17 11:21:33,511 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:21:33" (1/1) ... [2023-11-17 11:21:33,513 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:21:33,518 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:21:33,518 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:21:33,519 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:21:33,519 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:21:33" (1/1) ... [2023-11-17 11:21:33,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:21:33,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:21:33,563 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) [2023-11-17 11:21:33,591 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 [2023-11-17 11:21:33,607 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-17 11:21:33,607 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-17 11:21:33,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:21:33,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:21:33,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:21:33,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:21:33,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:21:33,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:21:33,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:21:33,610 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:21:33,693 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:21:33,694 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:21:33,805 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:21:33,868 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:21:33,868 INFO L307 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-17 11:21:33,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:21:33 BoogieIcfgContainer [2023-11-17 11:21:33,870 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:21:33,871 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:21:33,871 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:21:33,874 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:21:33,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:21:33" (1/3) ... [2023-11-17 11:21:33,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd6875a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:21:33, skipping insertion in model container [2023-11-17 11:21:33,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:21:33" (2/3) ... [2023-11-17 11:21:33,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd6875a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:21:33, skipping insertion in model container [2023-11-17 11:21:33,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:21:33" (3/3) ... [2023-11-17 11:21:33,876 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2023-11-17 11:21:33,907 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:21:33,907 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:21:33,907 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:21:33,945 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:21:33,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 18 places, 20 transitions, 44 flow [2023-11-17 11:21:34,010 INFO L124 PetriNetUnfolderBase]: 5/22 cut-off events. [2023-11-17 11:21:34,011 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:21:34,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 22 events. 5/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2023-11-17 11:21:34,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 18 places, 20 transitions, 44 flow [2023-11-17 11:21:34,016 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 18 places, 20 transitions, 44 flow [2023-11-17 11:21:34,018 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:21:34,028 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 18 places, 20 transitions, 44 flow [2023-11-17 11:21:34,030 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 18 places, 20 transitions, 44 flow [2023-11-17 11:21:34,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 18 places, 20 transitions, 44 flow [2023-11-17 11:21:34,035 INFO L124 PetriNetUnfolderBase]: 5/22 cut-off events. [2023-11-17 11:21:34,036 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:21:34,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 22 events. 5/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2023-11-17 11:21:34,036 INFO L119 LiptonReduction]: Number of co-enabled transitions 112 [2023-11-17 11:21:34,531 INFO L134 LiptonReduction]: Checked pairs total: 98 [2023-11-17 11:21:34,531 INFO L136 LiptonReduction]: Total number of compositions: 6 [2023-11-17 11:21:34,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:21:34,561 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a5e61de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:21:34,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 11:21:34,566 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:21:34,566 INFO L124 PetriNetUnfolderBase]: 5/17 cut-off events. [2023-11-17 11:21:34,567 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:21:34,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:21:34,568 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-17 11:21:34,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-17 11:21:34,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:21:34,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1614960159, now seen corresponding path program 1 times [2023-11-17 11:21:34,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:21:34,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108546923] [2023-11-17 11:21:34,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:21:34,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:21:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:21:34,678 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 11:21:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:21:34,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 11:21:34,719 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 11:21:34,720 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-11-17 11:21:34,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-17 11:21:34,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-11-17 11:21:34,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:21:34,722 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-17 11:21:34,724 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-17 11:21:34,725 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-17 11:21:34,770 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:21:34,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 35 transitions, 80 flow [2023-11-17 11:21:34,781 INFO L124 PetriNetUnfolderBase]: 10/40 cut-off events. [2023-11-17 11:21:34,781 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:21:34,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 40 events. 10/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 31. Up to 3 conditions per place. [2023-11-17 11:21:34,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 35 transitions, 80 flow [2023-11-17 11:21:34,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 35 transitions, 80 flow [2023-11-17 11:21:34,783 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:21:34,783 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 35 transitions, 80 flow [2023-11-17 11:21:34,783 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 35 transitions, 80 flow [2023-11-17 11:21:34,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 35 transitions, 80 flow [2023-11-17 11:21:34,794 INFO L124 PetriNetUnfolderBase]: 10/40 cut-off events. [2023-11-17 11:21:34,794 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:21:34,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 40 events. 10/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 31. Up to 3 conditions per place. [2023-11-17 11:21:34,796 INFO L119 LiptonReduction]: Number of co-enabled transitions 644 [2023-11-17 11:21:35,552 INFO L134 LiptonReduction]: Checked pairs total: 477 [2023-11-17 11:21:35,552 INFO L136 LiptonReduction]: Total number of compositions: 12 [2023-11-17 11:21:35,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:21:35,555 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a5e61de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:21:35,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 11:21:35,558 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:21:35,558 INFO L124 PetriNetUnfolderBase]: 5/18 cut-off events. [2023-11-17 11:21:35,558 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:21:35,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:21:35,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 11:21:35,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-17 11:21:35,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:21:35,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1466646782, now seen corresponding path program 1 times [2023-11-17 11:21:35,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:21:35,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444362572] [2023-11-17 11:21:35,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:21:35,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:21:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:21:35,630 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 11:21:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:21:35,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 11:21:35,651 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 11:21:35,651 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 11:21:35,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-17 11:21:35,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 11:21:35,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-17 11:21:35,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:21:35,652 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-17 11:21:35,655 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-11-17 11:21:35,655 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:21:35,665 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated [2023-11-17 11:21:35,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:21:35 BasicIcfg [2023-11-17 11:21:35,672 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:21:35,673 INFO L158 Benchmark]: Toolchain (without parser) took 2563.36ms. Allocated memory is still 249.6MB. Free memory was 200.1MB in the beginning and 110.0MB in the end (delta: 90.2MB). Peak memory consumption was 91.5MB. Max. memory is 8.0GB. [2023-11-17 11:21:35,673 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:21:35,673 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.00ms. Allocated memory is still 249.6MB. Free memory was 200.1MB in the beginning and 180.6MB in the end (delta: 19.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 11:21:35,674 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.87ms. Allocated memory is still 249.6MB. Free memory was 180.6MB in the beginning and 178.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:21:35,674 INFO L158 Benchmark]: Boogie Preprocessor took 26.81ms. Allocated memory is still 249.6MB. Free memory was 178.9MB in the beginning and 177.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:21:35,674 INFO L158 Benchmark]: RCFGBuilder took 351.32ms. Allocated memory is still 249.6MB. Free memory was 177.5MB in the beginning and 159.3MB in the end (delta: 18.2MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-11-17 11:21:35,676 INFO L158 Benchmark]: TraceAbstraction took 1800.35ms. Allocated memory is still 249.6MB. Free memory was 158.6MB in the beginning and 110.0MB in the end (delta: 48.6MB). Peak memory consumption was 49.5MB. Max. memory is 8.0GB. [2023-11-17 11:21:35,677 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 330.00ms. Allocated memory is still 249.6MB. Free memory was 200.1MB in the beginning and 180.6MB in the end (delta: 19.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.87ms. Allocated memory is still 249.6MB. Free memory was 180.6MB in the beginning and 178.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.81ms. Allocated memory is still 249.6MB. Free memory was 178.9MB in the beginning and 177.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 351.32ms. Allocated memory is still 249.6MB. Free memory was 177.5MB in the beginning and 159.3MB in the end (delta: 18.2MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 1800.35ms. Allocated memory is still 249.6MB. Free memory was 158.6MB in the beginning and 110.0MB in the end (delta: 48.6MB). Peak memory consumption was 49.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5s, 18 PlacesBefore, 15 PlacesAfterwards, 20 TransitionsBefore, 17 TransitionsAfterwards, 112 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 98 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 98, independent: 98, independent conditional: 0, independent unconditional: 98, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 30, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 30, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 98, independent: 68, independent conditional: 0, independent unconditional: 68, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 30, unknown conditional: 0, unknown unconditional: 30] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8s, 30 PlacesBefore, 24 PlacesAfterwards, 35 TransitionsBefore, 29 TransitionsAfterwards, 644 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 12 TotalNumberOfCompositions, 477 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 477, independent: 477, independent conditional: 0, independent unconditional: 477, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 186, independent: 186, independent conditional: 0, independent unconditional: 186, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 186, independent: 186, independent conditional: 0, independent unconditional: 186, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 477, independent: 291, independent conditional: 0, independent unconditional: 291, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 186, unknown conditional: 0, unknown unconditional: 186] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L700] 0 pthread_t t; VAL [t={3:0}] [L701] COND TRUE 0 1 [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [arg={0:0}, t={3:0}] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [arg={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i