/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/reorder_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:13:41,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:13:41,871 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 11:13:41,912 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:13:41,913 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:13:41,914 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:13:41,914 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:13:41,915 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:13:41,915 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:13:41,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:13:41,920 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:13:41,920 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:13:41,920 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:13:41,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:13:41,922 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:13:41,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:13:41,922 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:13:41,922 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:13:41,922 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:13:41,923 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:13:41,923 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:13:41,924 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:13:41,924 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:13:41,924 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:13:41,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:13:41,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:13:41,925 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:13:41,925 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:13:41,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:13:41,925 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:13:41,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:13:41,927 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:13:41,927 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:13:42,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:13:42,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:13:42,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:13:42,163 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:13:42,163 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:13:42,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/reorder_2.i [2023-11-17 11:13:43,479 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:13:43,726 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:13:43,730 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/reorder_2.i [2023-11-17 11:13:43,756 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e28ea2ac1/8e5e53c2a7bb49259fef1cff2b305468/FLAGbb0e21043 [2023-11-17 11:13:43,767 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e28ea2ac1/8e5e53c2a7bb49259fef1cff2b305468 [2023-11-17 11:13:43,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:13:43,770 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:13:43,771 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:13:43,771 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:13:43,775 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:13:43,775 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:13:43" (1/1) ... [2023-11-17 11:13:43,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@401ad749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:13:43, skipping insertion in model container [2023-11-17 11:13:43,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:13:43" (1/1) ... [2023-11-17 11:13:43,834 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:13:44,309 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/reorder_2.i[60219,60232] [2023-11-17 11:13:44,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:13:44,322 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:13:44,364 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/reorder_2.i[60219,60232] [2023-11-17 11:13:44,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:13:44,451 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:13:44,451 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:13:44,451 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:13:44,458 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:13:44,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:13:44 WrapperNode [2023-11-17 11:13:44,458 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:13:44,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:13:44,460 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:13:44,460 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:13:44,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:13:44" (1/1) ... [2023-11-17 11:13:44,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:13:44" (1/1) ... [2023-11-17 11:13:44,533 INFO L138 Inliner]: procedures = 374, calls = 54, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 165 [2023-11-17 11:13:44,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:13:44,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:13:44,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:13:44,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:13:44,543 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:13:44" (1/1) ... [2023-11-17 11:13:44,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:13:44" (1/1) ... [2023-11-17 11:13:44,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:13:44" (1/1) ... [2023-11-17 11:13:44,562 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:13:44" (1/1) ... [2023-11-17 11:13:44,568 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:13:44" (1/1) ... [2023-11-17 11:13:44,571 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:13:44" (1/1) ... [2023-11-17 11:13:44,573 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:13:44" (1/1) ... [2023-11-17 11:13:44,574 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:13:44" (1/1) ... [2023-11-17 11:13:44,593 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:13:44,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:13:44,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:13:44,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:13:44,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:13:44" (1/1) ... [2023-11-17 11:13:44,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:13:44,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:13:44,626 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 11:13:44,644 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 11:13:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-11-17 11:13:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:13:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:13:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-17 11:13:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:13:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:13:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:13:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2023-11-17 11:13:44,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2023-11-17 11:13:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:13:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:13:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2023-11-17 11:13:44,663 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2023-11-17 11:13:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:13:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:13:44,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:13:44,665 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 11:13:44,804 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:13:44,806 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:13:45,038 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:13:45,330 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:13:45,330 INFO L307 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-17 11:13:45,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:13:45 BoogieIcfgContainer [2023-11-17 11:13:45,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:13:45,334 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:13:45,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:13:45,337 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:13:45,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:13:43" (1/3) ... [2023-11-17 11:13:45,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbf37d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:13:45, skipping insertion in model container [2023-11-17 11:13:45,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:13:44" (2/3) ... [2023-11-17 11:13:45,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbf37d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:13:45, skipping insertion in model container [2023-11-17 11:13:45,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:13:45" (3/3) ... [2023-11-17 11:13:45,339 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2023-11-17 11:13:45,354 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:13:45,355 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:13:45,355 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:13:45,394 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 11:13:45,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 45 transitions, 110 flow [2023-11-17 11:13:45,483 INFO L124 PetriNetUnfolderBase]: 24/114 cut-off events. [2023-11-17 11:13:45,483 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-17 11:13:45,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 114 events. 24/114 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 412 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2023-11-17 11:13:45,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 45 transitions, 110 flow [2023-11-17 11:13:45,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 43 transitions, 100 flow [2023-11-17 11:13:45,496 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:13:45,512 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 43 transitions, 100 flow [2023-11-17 11:13:45,518 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 43 transitions, 100 flow [2023-11-17 11:13:45,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 43 transitions, 100 flow [2023-11-17 11:13:45,550 INFO L124 PetriNetUnfolderBase]: 20/108 cut-off events. [2023-11-17 11:13:45,550 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 11:13:45,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 108 events. 20/108 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 393 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 56. Up to 8 conditions per place. [2023-11-17 11:13:45,552 INFO L119 LiptonReduction]: Number of co-enabled transitions 600 [2023-11-17 11:13:46,228 INFO L134 LiptonReduction]: Checked pairs total: 873 [2023-11-17 11:13:46,228 INFO L136 LiptonReduction]: Total number of compositions: 30 [2023-11-17 11:13:46,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:13:46,255 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;@66dda371, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:13:46,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 11:13:46,266 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:13:46,266 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-11-17 11:13:46,266 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:13:46,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:13:46,267 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-17 11:13:46,267 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:13:46,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:13:46,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1022668747, now seen corresponding path program 1 times [2023-11-17 11:13:46,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:13:46,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952690981] [2023-11-17 11:13:46,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:13:46,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:13:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:13:46,494 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 11:13:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:13:46,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 11:13:46,557 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 11:13:46,558 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-17 11:13:46,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-17 11:13:46,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 11:13:46,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-17 11:13:46,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:13:46,561 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-17 11:13:46,563 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-17 11:13:46,563 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-17 11:13:46,600 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-17 11:13:46,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 63 transitions, 170 flow [2023-11-17 11:13:46,670 INFO L124 PetriNetUnfolderBase]: 107/391 cut-off events. [2023-11-17 11:13:46,671 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-17 11:13:46,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 391 events. 107/391 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1913 event pairs, 2 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 245. Up to 32 conditions per place. [2023-11-17 11:13:46,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 63 transitions, 170 flow [2023-11-17 11:13:46,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 63 transitions, 170 flow [2023-11-17 11:13:46,676 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:13:46,676 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 63 transitions, 170 flow [2023-11-17 11:13:46,676 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 63 transitions, 170 flow [2023-11-17 11:13:46,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 63 transitions, 170 flow [2023-11-17 11:13:46,711 INFO L124 PetriNetUnfolderBase]: 107/391 cut-off events. [2023-11-17 11:13:46,711 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-17 11:13:46,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 391 events. 107/391 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1913 event pairs, 2 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 245. Up to 32 conditions per place. [2023-11-17 11:13:46,719 INFO L119 LiptonReduction]: Number of co-enabled transitions 1784 [2023-11-17 11:13:47,532 INFO L134 LiptonReduction]: Checked pairs total: 3641 [2023-11-17 11:13:47,532 INFO L136 LiptonReduction]: Total number of compositions: 40 [2023-11-17 11:13:47,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:13:47,541 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;@66dda371, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:13:47,541 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 11:13:47,548 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:13:47,548 INFO L124 PetriNetUnfolderBase]: 0/23 cut-off events. [2023-11-17 11:13:47,548 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:13:47,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:13:47,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 11:13:47,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:13:47,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:13:47,549 INFO L85 PathProgramCache]: Analyzing trace with hash -538386272, now seen corresponding path program 1 times [2023-11-17 11:13:47,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:13:47,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567108193] [2023-11-17 11:13:47,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:13:47,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:13:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:13:47,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:13:47,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:13:47,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567108193] [2023-11-17 11:13:47,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567108193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:13:47,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:13:47,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:13:47,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616239299] [2023-11-17 11:13:47,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:13:47,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:13:47,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:13:47,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:13:47,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:13:47,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 103 [2023-11-17 11:13:47,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2023-11-17 11:13:47,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:13:47,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 103 [2023-11-17 11:13:47,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:13:49,188 INFO L124 PetriNetUnfolderBase]: 9137/13148 cut-off events. [2023-11-17 11:13:49,189 INFO L125 PetriNetUnfolderBase]: For 1764/1764 co-relation queries the response was YES. [2023-11-17 11:13:49,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27324 conditions, 13148 events. 9137/13148 cut-off events. For 1764/1764 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 70808 event pairs, 2346 based on Foata normal form. 0/10464 useless extension candidates. Maximal degree in co-relation 19442. Up to 10569 conditions per place. [2023-11-17 11:13:49,265 INFO L140 encePairwiseOnDemand]: 96/103 looper letters, 92 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2023-11-17 11:13:49,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 102 transitions, 501 flow [2023-11-17 11:13:49,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:13:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:13:49,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2023-11-17 11:13:49,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3533980582524272 [2023-11-17 11:13:49,277 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 182 transitions. [2023-11-17 11:13:49,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 182 transitions. [2023-11-17 11:13:49,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:13:49,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 182 transitions. [2023-11-17 11:13:49,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2023-11-17 11:13:49,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 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) [2023-11-17 11:13:49,287 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 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) [2023-11-17 11:13:49,288 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 118 flow. Second operand 5 states and 182 transitions. [2023-11-17 11:13:49,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 102 transitions, 501 flow [2023-11-17 11:13:49,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 102 transitions, 501 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:13:49,299 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 177 flow [2023-11-17 11:13:49,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-11-17 11:13:49,304 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2023-11-17 11:13:49,304 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 177 flow [2023-11-17 11:13:49,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2023-11-17 11:13:49,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:13:49,304 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:13:49,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:13:49,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:13:49,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:13:49,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1726638176, now seen corresponding path program 1 times [2023-11-17 11:13:49,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:13:49,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51770892] [2023-11-17 11:13:49,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:13:49,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:13:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:13:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:13:49,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:13:49,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51770892] [2023-11-17 11:13:49,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51770892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:13:49,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:13:49,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:13:49,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525572474] [2023-11-17 11:13:49,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:13:49,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:13:49,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:13:49,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:13:49,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:13:49,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 103 [2023-11-17 11:13:49,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-17 11:13:49,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:13:49,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 103 [2023-11-17 11:13:49,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:13:51,129 INFO L124 PetriNetUnfolderBase]: 10891/15601 cut-off events. [2023-11-17 11:13:51,130 INFO L125 PetriNetUnfolderBase]: For 12219/12219 co-relation queries the response was YES. [2023-11-17 11:13:51,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43304 conditions, 15601 events. 10891/15601 cut-off events. For 12219/12219 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 84089 event pairs, 3864 based on Foata normal form. 0/13390 useless extension candidates. Maximal degree in co-relation 32417. Up to 12699 conditions per place. [2023-11-17 11:13:51,241 INFO L140 encePairwiseOnDemand]: 96/103 looper letters, 90 selfloop transitions, 14 changer transitions 0/106 dead transitions. [2023-11-17 11:13:51,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 106 transitions, 594 flow [2023-11-17 11:13:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:13:51,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:13:51,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2023-11-17 11:13:51,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34563106796116505 [2023-11-17 11:13:51,246 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 178 transitions. [2023-11-17 11:13:51,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 178 transitions. [2023-11-17 11:13:51,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:13:51,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 178 transitions. [2023-11-17 11:13:51,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 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) [2023-11-17 11:13:51,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 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) [2023-11-17 11:13:51,252 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 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) [2023-11-17 11:13:51,252 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 177 flow. Second operand 5 states and 178 transitions. [2023-11-17 11:13:51,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 106 transitions, 594 flow [2023-11-17 11:13:51,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 106 transitions, 585 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:13:51,280 INFO L231 Difference]: Finished difference. Result has 51 places, 53 transitions, 271 flow [2023-11-17 11:13:51,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=51, PETRI_TRANSITIONS=53} [2023-11-17 11:13:51,281 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-11-17 11:13:51,281 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 53 transitions, 271 flow [2023-11-17 11:13:51,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-17 11:13:51,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:13:51,282 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-17 11:13:51,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:13:51,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:13:51,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:13:51,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1424228063, now seen corresponding path program 1 times [2023-11-17 11:13:51,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:13:51,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062490310] [2023-11-17 11:13:51,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:13:51,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:13:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:13:51,350 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 11:13:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:13:51,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 11:13:51,403 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 11:13:51,407 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-17 11:13:51,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-17 11:13:51,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-17 11:13:51,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-17 11:13:51,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-17 11:13:51,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:13:51,408 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-17 11:13:51,409 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-17 11:13:51,409 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-17 11:13:51,443 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-11-17 11:13:51,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 81 transitions, 234 flow [2023-11-17 11:13:51,562 INFO L124 PetriNetUnfolderBase]: 496/1394 cut-off events. [2023-11-17 11:13:51,562 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-11-17 11:13:51,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 1394 events. 496/1394 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 8360 event pairs, 52 based on Foata normal form. 0/1074 useless extension candidates. Maximal degree in co-relation 918. Up to 192 conditions per place. [2023-11-17 11:13:51,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 81 transitions, 234 flow [2023-11-17 11:13:51,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 81 transitions, 234 flow [2023-11-17 11:13:51,579 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:13:51,580 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 81 transitions, 234 flow [2023-11-17 11:13:51,580 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 81 transitions, 234 flow [2023-11-17 11:13:51,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 81 transitions, 234 flow [2023-11-17 11:13:51,686 INFO L124 PetriNetUnfolderBase]: 496/1394 cut-off events. [2023-11-17 11:13:51,686 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-11-17 11:13:51,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 1394 events. 496/1394 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 8360 event pairs, 52 based on Foata normal form. 0/1074 useless extension candidates. Maximal degree in co-relation 918. Up to 192 conditions per place. [2023-11-17 11:13:51,720 INFO L119 LiptonReduction]: Number of co-enabled transitions 3456 [2023-11-17 11:13:52,748 INFO L134 LiptonReduction]: Checked pairs total: 10987 [2023-11-17 11:13:52,748 INFO L136 LiptonReduction]: Total number of compositions: 51 [2023-11-17 11:13:52,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:13:52,755 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;@66dda371, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:13:52,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 11:13:52,760 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:13:52,760 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2023-11-17 11:13:52,760 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:13:52,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:13:52,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 11:13:52,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:13:52,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:13:52,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1285472774, now seen corresponding path program 1 times [2023-11-17 11:13:52,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:13:52,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140795167] [2023-11-17 11:13:52,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:13:52,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:13:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:13:52,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:13:52,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:13:52,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140795167] [2023-11-17 11:13:52,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140795167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:13:52,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:13:52,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:13:52,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634550454] [2023-11-17 11:13:52,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:13:52,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:13:52,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:13:52,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:13:52,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:13:52,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 132 [2023-11-17 11:13:52,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2023-11-17 11:13:52,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:13:52,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 132 [2023-11-17 11:13:52,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:14:13,476 INFO L124 PetriNetUnfolderBase]: 252586/323320 cut-off events. [2023-11-17 11:14:13,477 INFO L125 PetriNetUnfolderBase]: For 47823/47823 co-relation queries the response was YES. [2023-11-17 11:14:14,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673320 conditions, 323320 events. 252586/323320 cut-off events. For 47823/47823 co-relation queries the response was YES. Maximal size of possible extension queue 6062. Compared 1931483 event pairs, 78322 based on Foata normal form. 0/260755 useless extension candidates. Maximal degree in co-relation 483711. Up to 287652 conditions per place. [2023-11-17 11:14:15,739 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 123 selfloop transitions, 11 changer transitions 0/136 dead transitions. [2023-11-17 11:14:15,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 136 transitions, 711 flow [2023-11-17 11:14:15,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:14:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:14:15,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 238 transitions. [2023-11-17 11:14:15,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2023-11-17 11:14:15,742 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 238 transitions. [2023-11-17 11:14:15,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 238 transitions. [2023-11-17 11:14:15,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:14:15,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 238 transitions. [2023-11-17 11:14:15,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 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) [2023-11-17 11:14:15,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 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) [2023-11-17 11:14:15,745 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 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) [2023-11-17 11:14:15,745 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 170 flow. Second operand 5 states and 238 transitions. [2023-11-17 11:14:15,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 136 transitions, 711 flow [2023-11-17 11:14:16,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 136 transitions, 711 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:14:16,012 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 249 flow [2023-11-17 11:14:16,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2023-11-17 11:14:16,013 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2023-11-17 11:14:16,013 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 249 flow [2023-11-17 11:14:16,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2023-11-17 11:14:16,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:14:16,013 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:14:16,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:14:16,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:14:16,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:14:16,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1673814381, now seen corresponding path program 1 times [2023-11-17 11:14:16,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:14:16,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918559881] [2023-11-17 11:14:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:14:16,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:14:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:14:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:14:16,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:14:16,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918559881] [2023-11-17 11:14:16,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918559881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:14:16,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:14:16,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:14:16,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659556669] [2023-11-17 11:14:16,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:14:16,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:14:16,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:14:16,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:14:16,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:14:16,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 132 [2023-11-17 11:14:16,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2023-11-17 11:14:16,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:14:16,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 132 [2023-11-17 11:14:16,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:14:41,638 INFO L124 PetriNetUnfolderBase]: 291898/372236 cut-off events. [2023-11-17 11:14:41,638 INFO L125 PetriNetUnfolderBase]: For 320053/320053 co-relation queries the response was YES. [2023-11-17 11:14:43,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033294 conditions, 372236 events. 291898/372236 cut-off events. For 320053/320053 co-relation queries the response was YES. Maximal size of possible extension queue 7119. Compared 2195269 event pairs, 120212 based on Foata normal form. 0/317808 useless extension candidates. Maximal degree in co-relation 754985. Up to 326607 conditions per place. [2023-11-17 11:14:45,043 INFO L140 encePairwiseOnDemand]: 123/132 looper letters, 122 selfloop transitions, 20 changer transitions 0/144 dead transitions. [2023-11-17 11:14:45,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 144 transitions, 852 flow [2023-11-17 11:14:45,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:14:45,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:14:45,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 232 transitions. [2023-11-17 11:14:45,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2023-11-17 11:14:45,063 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 232 transitions. [2023-11-17 11:14:45,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 232 transitions. [2023-11-17 11:14:45,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:14:45,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 232 transitions. [2023-11-17 11:14:45,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 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) [2023-11-17 11:14:45,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 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) [2023-11-17 11:14:45,066 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 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) [2023-11-17 11:14:45,066 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 249 flow. Second operand 5 states and 232 transitions. [2023-11-17 11:14:45,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 144 transitions, 852 flow [2023-11-17 11:14:45,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 144 transitions, 839 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:14:45,857 INFO L231 Difference]: Finished difference. Result has 62 places, 71 transitions, 383 flow [2023-11-17 11:14:45,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=62, PETRI_TRANSITIONS=71} [2023-11-17 11:14:45,860 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2023-11-17 11:14:45,860 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 71 transitions, 383 flow [2023-11-17 11:14:45,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2023-11-17 11:14:45,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:14:45,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:14:45,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:14:45,861 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:14:45,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:14:45,862 INFO L85 PathProgramCache]: Analyzing trace with hash -570051354, now seen corresponding path program 1 times [2023-11-17 11:14:45,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:14:45,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123817023] [2023-11-17 11:14:45,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:14:45,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:14:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:14:45,946 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 11:14:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:14:45,990 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 11:14:45,991 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 11:14:45,991 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-17 11:14:45,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-17 11:14:45,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-17 11:14:45,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-11-17 11:14:45,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-17 11:14:45,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-17 11:14:45,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:14:45,992 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-17 11:14:45,996 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2023-11-17 11:14:45,996 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:14:46,038 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem35 [2023-11-17 11:14:46,042 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem32 [2023-11-17 11:14:46,042 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem42 could not be translated [2023-11-17 11:14:46,042 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated [2023-11-17 11:14:46,042 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated [2023-11-17 11:14:46,043 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated [2023-11-17 11:14:46,043 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem32 [2023-11-17 11:14:46,043 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem35 [2023-11-17 11:14:46,043 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre45 could not be translated [2023-11-17 11:14:46,044 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated [2023-11-17 11:14:46,044 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem42 could not be translated [2023-11-17 11:14:46,045 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem35 [2023-11-17 11:14:46,045 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated [2023-11-17 11:14:46,045 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated [2023-11-17 11:14:46,045 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem42 could not be translated [2023-11-17 11:14:46,045 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret47 could not be translated [2023-11-17 11:14:46,046 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem32 [2023-11-17 11:14:46,046 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem35 [2023-11-17 11:14:46,047 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret47 could not be translated [2023-11-17 11:14:46,047 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated [2023-11-17 11:14:46,047 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem32 [2023-11-17 11:14:46,047 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated [2023-11-17 11:14:46,047 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem42 could not be translated [2023-11-17 11:14:46,047 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated [2023-11-17 11:14:46,048 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret47 could not be translated [2023-11-17 11:14:46,048 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem35 [2023-11-17 11:14:46,048 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem32 [2023-11-17 11:14:46,048 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem42 could not be translated [2023-11-17 11:14:46,049 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated [2023-11-17 11:14:46,049 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre50 could not be translated [2023-11-17 11:14:46,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:14:46 BasicIcfg [2023-11-17 11:14:46,062 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:14:46,063 INFO L158 Benchmark]: Toolchain (without parser) took 62292.80ms. Allocated memory was 187.7MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 134.8MB in the beginning and 5.5GB in the end (delta: -5.4GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. [2023-11-17 11:14:46,063 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 187.7MB. Free memory is still 136.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:14:46,063 INFO L158 Benchmark]: CACSL2BoogieTranslator took 687.67ms. Allocated memory was 187.7MB in the beginning and 277.9MB in the end (delta: 90.2MB). Free memory was 134.8MB in the beginning and 241.0MB in the end (delta: -106.1MB). Peak memory consumption was 45.0MB. Max. memory is 8.0GB. [2023-11-17 11:14:46,063 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.59ms. Allocated memory is still 277.9MB. Free memory was 241.0MB in the beginning and 237.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 11:14:46,063 INFO L158 Benchmark]: Boogie Preprocessor took 58.82ms. Allocated memory is still 277.9MB. Free memory was 237.8MB in the beginning and 235.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:14:46,064 INFO L158 Benchmark]: RCFGBuilder took 737.83ms. Allocated memory is still 277.9MB. Free memory was 235.7MB in the beginning and 180.7MB in the end (delta: 55.0MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. [2023-11-17 11:14:46,065 INFO L158 Benchmark]: TraceAbstraction took 60728.20ms. Allocated memory was 277.9MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 180.1MB in the beginning and 5.5GB in the end (delta: -5.4GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-11-17 11:14:46,068 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 187.7MB. Free memory is still 136.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 687.67ms. Allocated memory was 187.7MB in the beginning and 277.9MB in the end (delta: 90.2MB). Free memory was 134.8MB in the beginning and 241.0MB in the end (delta: -106.1MB). Peak memory consumption was 45.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 74.59ms. Allocated memory is still 277.9MB. Free memory was 241.0MB in the beginning and 237.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.82ms. Allocated memory is still 277.9MB. Free memory was 237.8MB in the beginning and 235.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 737.83ms. Allocated memory is still 277.9MB. Free memory was 235.7MB in the beginning and 180.7MB in the end (delta: 55.0MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. * TraceAbstraction took 60728.20ms. Allocated memory was 277.9MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 180.1MB in the beginning and 5.5GB in the end (delta: -5.4GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem35 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem32 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem42 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem32 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem35 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem42 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem35 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem42 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret47 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem32 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem35 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret47 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem32 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem42 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret47 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem35 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem32 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem42 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre50 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: 0.7s, 41 PlacesBefore, 27 PlacesAfterwards, 43 TransitionsBefore, 24 TransitionsAfterwards, 600 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 5 ChoiceCompositions, 30 TotalNumberOfCompositions, 873 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 725, independent: 705, independent conditional: 0, independent unconditional: 705, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 462, independent: 452, independent conditional: 0, independent unconditional: 452, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 462, independent: 452, independent conditional: 0, independent unconditional: 452, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 26, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 725, independent: 253, independent conditional: 0, independent unconditional: 253, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 462, unknown conditional: 0, unknown unconditional: 462] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 80, Positive conditional cache size: 0, Positive unconditional cache size: 80, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9s, 58 PlacesBefore, 38 PlacesAfterwards, 63 TransitionsBefore, 37 TransitionsAfterwards, 1784 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 6 ChoiceCompositions, 40 TotalNumberOfCompositions, 3641 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2717, independent: 2673, independent conditional: 0, independent unconditional: 2673, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1429, independent: 1401, independent conditional: 0, independent unconditional: 1401, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1429, independent: 1397, independent conditional: 0, independent unconditional: 1397, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 32, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 49, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2717, independent: 1272, independent conditional: 0, independent unconditional: 1272, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 1429, unknown conditional: 0, unknown unconditional: 1429] , Statistics on independence cache: Total cache size (in pairs): 279, Positive cache size: 266, Positive conditional cache size: 0, Positive unconditional cache size: 266, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 75 PlacesBefore, 49 PlacesAfterwards, 81 TransitionsBefore, 49 TransitionsAfterwards, 3456 CoEnabledTransitionPairs, 4 FixpointIterations, 0 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 6 ChoiceCompositions, 51 TotalNumberOfCompositions, 10987 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8173, independent: 8054, independent conditional: 0, independent unconditional: 8054, dependent: 119, dependent conditional: 0, dependent unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2716, independent: 2678, independent conditional: 0, independent unconditional: 2678, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2716, independent: 2668, independent conditional: 0, independent unconditional: 2668, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 48, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 59, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8173, independent: 5376, independent conditional: 0, independent unconditional: 5376, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 2716, unknown conditional: 0, unknown unconditional: 2716] , Statistics on independence cache: Total cache size (in pairs): 603, Positive cache size: 584, Positive conditional cache size: 0, Positive unconditional cache size: 584, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1307]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of sscanf at line 1253. Possible FailurePath: [L1238] 0 static int iSet = 2; [L1239] 0 static int iCheck = 2; [L1240] 0 static int a = 0; [L1241] 0 static int b = 0; [L1247] 0 int i, err; [L1248] COND TRUE 0 argc != 1 [L1249] COND FALSE 0 !(argc != 3) [L1253] 0 argv[1] [L1254] 0 argv[2] [L1257] EXPR 0 \read(iSet) [L1257] 0 iSet > 100000 || iCheck > 100000 [L1257] EXPR 0 \read(iCheck) [L1257] 0 iSet > 100000 || iCheck > 100000 [L1257] COND FALSE 0 !(iSet > 100000 || iCheck > 100000) [L1260] EXPR 0 \read(iSet) [L1260] 0 pthread_t setPool[iSet]; [L1261] EXPR 0 \read(iCheck) [L1261] 0 pthread_t checkPool[iCheck]; [L1262] 0 i = 0 VAL [\old(argc)=3, a=0, argc=3, argv={60:61}, argv={60:61}, b=0, checkPool={13:0}, i=0, iCheck={10:0}, iSet={9:0}, setPool={11:0}] [L1262] EXPR 0 \read(iSet) [L1262] COND TRUE 0 i < iSet [L1263] EXPR, FCALL, FORK 0 pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, a=0, argc=3, argv={60:61}, argv={60:61}, b=0, checkPool={13:0}, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, setPool={11:0}] [L1263] EXPR 0 err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) [L1263] COND FALSE 0 !(0 != (err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)))) [L1262] 0 i++ VAL [\old(argc)=3, a=0, argc=3, argv={60:61}, argv={60:61}, b=0, checkPool={13:0}, err=0, i=1, iCheck={10:0}, iSet={9:0}, param={0:0}, setPool={11:0}] [L1262] EXPR 0 \read(iSet) [L1262] COND FALSE 0 !(i < iSet) [L1268] 0 i = 0 VAL [\old(argc)=3, a=0, argc=3, argv={60:61}, argv={60:61}, b=0, checkPool={13:0}, err=0, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, setPool={11:0}] [L1268] EXPR 0 \read(iCheck) [L1268] COND TRUE 0 i < iCheck [L1269-L1270] FCALL, FORK 0 pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0)) VAL [\old(argc)=3, a=0, argc=3, argv={60:61}, argv={60:61}, b=0, checkPool={13:0}, err=0, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, setPool={11:0}] [L1291] 1 a = 1 VAL [a=1, b=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, param={0:0}] [L1300] 2 int la = a; VAL [a=1, b=0, iCheck={10:0}, iSet={9:0}, la=1, param={0:0}, param={0:0}, param={0:0}, param={0:0}] [L1303] 2 int lb = b; [L1305] COND TRUE 2 ! ((la == 0 && lb == 0) || (la == 1 && lb == -1)) [L1307] 2 reach_error() VAL [a=1, b=0, iCheck={10:0}, iSet={9:0}, la=1, lb=0, param={0:0}, param={0:0}, param={0:0}, param={0:0}] - UnprovableResult [Line: 1269]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1263]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 63 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 120 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 120 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 296 IncrementalHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 296 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=271occurred in iteration=2, InterpolantAutomatonStates: 10, 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, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 91 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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 - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 9 procedures, 76 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 54.5s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 52.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 162 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 162 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 396 IncrementalHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 396 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=383occurred in iteration=2, InterpolantAutomatonStates: 10, 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, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 91 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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 could not prove your program: unable to determine feasibility of some traces [2023-11-17 11:14:46,117 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...