/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:19:57,725 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:19:57,800 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 15:19:57,834 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:19:57,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:19:57,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:19:57,836 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:19:57,836 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:19:57,836 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:19:57,840 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:19:57,841 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:19:57,841 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:19:57,841 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:19:57,842 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:19:57,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:19:57,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:19:57,843 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:19:57,843 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:19:57,843 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:19:57,843 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:19:57,843 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:19:57,844 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:19:57,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:19:57,844 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:19:57,844 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:19:57,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:19:57,845 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:19:57,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:19:57,845 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:19:57,845 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:19:57,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:19:57,846 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:19:57,846 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:19:58,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:19:58,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:19:58,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:19:58,079 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:19:58,079 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:19:58,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-11-17 15:19:59,112 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:19:59,286 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:19:59,298 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-11-17 15:19:59,314 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3894cda5f/dbe27b6625ee4da19f4c13c2a25131c7/FLAGc8594334f [2023-11-17 15:19:59,326 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3894cda5f/dbe27b6625ee4da19f4c13c2a25131c7 [2023-11-17 15:19:59,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:19:59,329 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:19:59,330 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:19:59,330 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:19:59,333 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:19:59,334 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:19:59" (1/1) ... [2023-11-17 15:19:59,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb1bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:59, skipping insertion in model container [2023-11-17 15:19:59,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:19:59" (1/1) ... [2023-11-17 15:19:59,381 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:19:59,517 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-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2023-11-17 15:19:59,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:19:59,662 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:19:59,677 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-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2023-11-17 15:19:59,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:19:59,739 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:19:59,739 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:19:59,744 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:19:59,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:59 WrapperNode [2023-11-17 15:19:59,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:19:59,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:19:59,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:19:59,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:19:59,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:59" (1/1) ... [2023-11-17 15:19:59,779 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:59" (1/1) ... [2023-11-17 15:19:59,794 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-17 15:19:59,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:19:59,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:19:59,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:19:59,795 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:19:59,802 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:59" (1/1) ... [2023-11-17 15:19:59,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:59" (1/1) ... [2023-11-17 15:19:59,816 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:59" (1/1) ... [2023-11-17 15:19:59,816 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:59" (1/1) ... [2023-11-17 15:19:59,821 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:59" (1/1) ... [2023-11-17 15:19:59,822 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:59" (1/1) ... [2023-11-17 15:19:59,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:59" (1/1) ... [2023-11-17 15:19:59,824 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:59" (1/1) ... [2023-11-17 15:19:59,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:19:59,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:19:59,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:19:59,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:19:59,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:59" (1/1) ... [2023-11-17 15:19:59,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:19:59,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:19:59,862 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 15:19:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:19:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:19:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:19:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:19:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:19:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 15:19:59,884 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 15:19:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 15:19:59,884 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 15:19:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 15:19:59,884 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 15:19:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:19:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:19:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:19:59,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:19:59,886 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 15:19:59,878 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 15:20:00,055 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:20:00,057 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:20:00,324 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:20:00,334 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:20:00,334 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:20:00,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:20:00 BoogieIcfgContainer [2023-11-17 15:20:00,336 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:20:00,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:20:00,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:20:00,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:20:00,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:19:59" (1/3) ... [2023-11-17 15:20:00,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a71330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:20:00, skipping insertion in model container [2023-11-17 15:20:00,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:59" (2/3) ... [2023-11-17 15:20:00,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a71330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:20:00, skipping insertion in model container [2023-11-17 15:20:00,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:20:00" (3/3) ... [2023-11-17 15:20:00,342 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-11-17 15:20:00,354 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:20:00,354 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:20:00,354 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:20:00,411 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:20:00,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 95 transitions, 202 flow [2023-11-17 15:20:00,499 INFO L124 PetriNetUnfolderBase]: 2/92 cut-off events. [2023-11-17 15:20:00,500 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:20:00,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 2/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2023-11-17 15:20:00,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 95 transitions, 202 flow [2023-11-17 15:20:00,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 77 transitions, 163 flow [2023-11-17 15:20:00,511 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:20:00,520 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 77 transitions, 163 flow [2023-11-17 15:20:00,522 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 77 transitions, 163 flow [2023-11-17 15:20:00,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 77 transitions, 163 flow [2023-11-17 15:20:00,535 INFO L124 PetriNetUnfolderBase]: 1/77 cut-off events. [2023-11-17 15:20:00,536 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:20:00,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 1/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-17 15:20:00,537 INFO L119 LiptonReduction]: Number of co-enabled transitions 1584 [2023-11-17 15:20:01,926 INFO L134 LiptonReduction]: Checked pairs total: 2105 [2023-11-17 15:20:01,927 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-11-17 15:20:01,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:20:01,951 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;@1ba39c1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:20:01,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:20:01,966 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:20:01,967 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-17 15:20:01,967 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:20:01,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:01,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:20:01,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:20:01,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:01,971 INFO L85 PathProgramCache]: Analyzing trace with hash 303024871, now seen corresponding path program 1 times [2023-11-17 15:20:01,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:01,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390590693] [2023-11-17 15:20:01,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:01,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:02,386 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 15:20:02,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:02,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390590693] [2023-11-17 15:20:02,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390590693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:02,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:02,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:20:02,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363695768] [2023-11-17 15:20:02,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:02,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:20:02,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:02,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:20:02,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:20:02,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 161 [2023-11-17 15:20:02,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 15:20:02,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:02,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 161 [2023-11-17 15:20:02,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:02,539 INFO L124 PetriNetUnfolderBase]: 247/408 cut-off events. [2023-11-17 15:20:02,539 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-17 15:20:02,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 408 events. 247/408 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1495 event pairs, 121 based on Foata normal form. 24/428 useless extension candidates. Maximal degree in co-relation 836. Up to 211 conditions per place. [2023-11-17 15:20:02,544 INFO L140 encePairwiseOnDemand]: 157/161 looper letters, 20 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2023-11-17 15:20:02,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 23 transitions, 99 flow [2023-11-17 15:20:02,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:20:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:20:02,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-11-17 15:20:02,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5859213250517599 [2023-11-17 15:20:02,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-11-17 15:20:02,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-11-17 15:20:02,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:02,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-11-17 15:20:02,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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 15:20:02,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 15:20:02,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 15:20:02,575 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 283 transitions. [2023-11-17 15:20:02,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 23 transitions, 99 flow [2023-11-17 15:20:02,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 23 transitions, 96 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:20:02,579 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2023-11-17 15:20:02,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-11-17 15:20:02,585 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-11-17 15:20:02,585 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2023-11-17 15:20:02,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 15:20:02,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:02,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:20:02,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:20:02,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:20:02,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:02,588 INFO L85 PathProgramCache]: Analyzing trace with hash -850893411, now seen corresponding path program 1 times [2023-11-17 15:20:02,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:02,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399919468] [2023-11-17 15:20:02,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:02,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:02,731 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 15:20:02,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:02,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399919468] [2023-11-17 15:20:02,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399919468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:02,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:02,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:20:02,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808303830] [2023-11-17 15:20:02,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:02,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:20:02,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:02,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:20:02,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:20:02,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 161 [2023-11-17 15:20:02,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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 15:20:02,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:02,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 161 [2023-11-17 15:20:02,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:02,838 INFO L124 PetriNetUnfolderBase]: 569/930 cut-off events. [2023-11-17 15:20:02,838 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2023-11-17 15:20:02,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2079 conditions, 930 events. 569/930 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4177 event pairs, 109 based on Foata normal form. 56/986 useless extension candidates. Maximal degree in co-relation 2068. Up to 385 conditions per place. [2023-11-17 15:20:02,843 INFO L140 encePairwiseOnDemand]: 154/161 looper letters, 25 selfloop transitions, 6 changer transitions 8/39 dead transitions. [2023-11-17 15:20:02,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 180 flow [2023-11-17 15:20:02,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:20:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:20:02,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2023-11-17 15:20:02,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2023-11-17 15:20:02,846 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2023-11-17 15:20:02,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2023-11-17 15:20:02,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:02,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2023-11-17 15:20:02,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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 15:20:02,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 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 15:20:02,848 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 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 15:20:02,849 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 357 transitions. [2023-11-17 15:20:02,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 180 flow [2023-11-17 15:20:02,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:20:02,851 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 85 flow [2023-11-17 15:20:02,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2023-11-17 15:20:02,852 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-11-17 15:20:02,852 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 85 flow [2023-11-17 15:20:02,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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 15:20:02,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:02,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:20:02,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:20:02,853 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:20:02,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:02,853 INFO L85 PathProgramCache]: Analyzing trace with hash -607892547, now seen corresponding path program 1 times [2023-11-17 15:20:02,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:02,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469541938] [2023-11-17 15:20:02,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:02,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:02,928 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 15:20:02,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:02,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469541938] [2023-11-17 15:20:02,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469541938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:02,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:02,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:20:02,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683964470] [2023-11-17 15:20:02,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:02,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:20:02,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:02,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:20:02,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:20:02,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 161 [2023-11-17 15:20:02,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 15:20:02,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:02,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 161 [2023-11-17 15:20:02,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:02,971 INFO L124 PetriNetUnfolderBase]: 187/349 cut-off events. [2023-11-17 15:20:02,971 INFO L125 PetriNetUnfolderBase]: For 245/245 co-relation queries the response was YES. [2023-11-17 15:20:02,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 349 events. 187/349 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1438 event pairs, 44 based on Foata normal form. 22/364 useless extension candidates. Maximal degree in co-relation 951. Up to 289 conditions per place. [2023-11-17 15:20:02,973 INFO L140 encePairwiseOnDemand]: 156/161 looper letters, 26 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2023-11-17 15:20:02,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 193 flow [2023-11-17 15:20:02,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:20:02,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:20:02,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2023-11-17 15:20:02,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577639751552795 [2023-11-17 15:20:02,975 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2023-11-17 15:20:02,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2023-11-17 15:20:02,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:02,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2023-11-17 15:20:02,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 15:20:02,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 15:20:02,977 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 15:20:02,977 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 85 flow. Second operand 3 states and 279 transitions. [2023-11-17 15:20:02,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 193 flow [2023-11-17 15:20:02,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:20:02,979 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 109 flow [2023-11-17 15:20:02,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-11-17 15:20:02,980 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-11-17 15:20:02,980 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 109 flow [2023-11-17 15:20:02,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 15:20:02,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:02,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:20:02,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:20:02,980 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:20:02,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:02,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1808862644, now seen corresponding path program 1 times [2023-11-17 15:20:02,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:02,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882259325] [2023-11-17 15:20:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:02,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:03,100 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 15:20:03,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:03,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882259325] [2023-11-17 15:20:03,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882259325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:03,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:03,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:20:03,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150684101] [2023-11-17 15:20:03,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:03,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:20:03,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:03,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:20:03,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:20:03,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 161 [2023-11-17 15:20:03,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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 15:20:03,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:03,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 161 [2023-11-17 15:20:03,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:03,171 INFO L124 PetriNetUnfolderBase]: 101/214 cut-off events. [2023-11-17 15:20:03,171 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-11-17 15:20:03,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 214 events. 101/214 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 818 event pairs, 16 based on Foata normal form. 32/241 useless extension candidates. Maximal degree in co-relation 718. Up to 99 conditions per place. [2023-11-17 15:20:03,173 INFO L140 encePairwiseOnDemand]: 156/161 looper letters, 30 selfloop transitions, 7 changer transitions 2/41 dead transitions. [2023-11-17 15:20:03,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 41 transitions, 269 flow [2023-11-17 15:20:03,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:20:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:20:03,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2023-11-17 15:20:03,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745341614906833 [2023-11-17 15:20:03,174 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 370 transitions. [2023-11-17 15:20:03,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 370 transitions. [2023-11-17 15:20:03,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:03,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 370 transitions. [2023-11-17 15:20:03,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 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 15:20:03,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 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 15:20:03,177 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 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 15:20:03,177 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 109 flow. Second operand 4 states and 370 transitions. [2023-11-17 15:20:03,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 41 transitions, 269 flow [2023-11-17 15:20:03,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:20:03,179 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 145 flow [2023-11-17 15:20:03,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-11-17 15:20:03,179 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-11-17 15:20:03,179 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 145 flow [2023-11-17 15:20:03,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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 15:20:03,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:03,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:20:03,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:20:03,180 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:20:03,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:03,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1170476549, now seen corresponding path program 1 times [2023-11-17 15:20:03,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:03,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832861219] [2023-11-17 15:20:03,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:03,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:03,344 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 15:20:03,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:03,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832861219] [2023-11-17 15:20:03,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832861219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:03,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:03,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:20:03,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845699095] [2023-11-17 15:20:03,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:03,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:20:03,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:03,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:20:03,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:20:03,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 161 [2023-11-17 15:20:03,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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 15:20:03,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:03,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 161 [2023-11-17 15:20:03,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:03,399 INFO L124 PetriNetUnfolderBase]: 82/172 cut-off events. [2023-11-17 15:20:03,400 INFO L125 PetriNetUnfolderBase]: For 244/244 co-relation queries the response was YES. [2023-11-17 15:20:03,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 172 events. 82/172 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 624 event pairs, 13 based on Foata normal form. 15/182 useless extension candidates. Maximal degree in co-relation 647. Up to 73 conditions per place. [2023-11-17 15:20:03,401 INFO L140 encePairwiseOnDemand]: 156/161 looper letters, 26 selfloop transitions, 10 changer transitions 3/41 dead transitions. [2023-11-17 15:20:03,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 41 transitions, 293 flow [2023-11-17 15:20:03,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:20:03,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:20:03,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 454 transitions. [2023-11-17 15:20:03,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5639751552795031 [2023-11-17 15:20:03,402 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 454 transitions. [2023-11-17 15:20:03,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 454 transitions. [2023-11-17 15:20:03,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:03,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 454 transitions. [2023-11-17 15:20:03,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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 15:20:03,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 15:20:03,405 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 15:20:03,405 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 145 flow. Second operand 5 states and 454 transitions. [2023-11-17 15:20:03,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 41 transitions, 293 flow [2023-11-17 15:20:03,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 263 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-17 15:20:03,407 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 150 flow [2023-11-17 15:20:03,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2023-11-17 15:20:03,408 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-11-17 15:20:03,408 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 150 flow [2023-11-17 15:20:03,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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 15:20:03,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:03,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:20:03,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:20:03,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:20:03,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:03,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1864448873, now seen corresponding path program 1 times [2023-11-17 15:20:03,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:03,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582299684] [2023-11-17 15:20:03,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:03,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:03,543 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 15:20:03,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:03,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582299684] [2023-11-17 15:20:03,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582299684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:03,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:03,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:20:03,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373415181] [2023-11-17 15:20:03,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:03,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:20:03,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:03,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:20:03,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:20:03,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 161 [2023-11-17 15:20:03,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 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 15:20:03,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:03,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 161 [2023-11-17 15:20:03,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:03,625 INFO L124 PetriNetUnfolderBase]: 125/259 cut-off events. [2023-11-17 15:20:03,625 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2023-11-17 15:20:03,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 259 events. 125/259 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1046 event pairs, 22 based on Foata normal form. 1/260 useless extension candidates. Maximal degree in co-relation 997. Up to 92 conditions per place. [2023-11-17 15:20:03,627 INFO L140 encePairwiseOnDemand]: 154/161 looper letters, 31 selfloop transitions, 6 changer transitions 26/63 dead transitions. [2023-11-17 15:20:03,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 63 transitions, 532 flow [2023-11-17 15:20:03,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:20:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:20:03,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 515 transitions. [2023-11-17 15:20:03,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331262939958592 [2023-11-17 15:20:03,629 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 515 transitions. [2023-11-17 15:20:03,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 515 transitions. [2023-11-17 15:20:03,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:03,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 515 transitions. [2023-11-17 15:20:03,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 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 15:20:03,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 161.0) internal successors, (1127), 7 states have internal predecessors, (1127), 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 15:20:03,632 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 161.0) internal successors, (1127), 7 states have internal predecessors, (1127), 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 15:20:03,632 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 150 flow. Second operand 6 states and 515 transitions. [2023-11-17 15:20:03,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 63 transitions, 532 flow [2023-11-17 15:20:03,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 63 transitions, 446 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-11-17 15:20:03,634 INFO L231 Difference]: Finished difference. Result has 41 places, 26 transitions, 142 flow [2023-11-17 15:20:03,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=41, PETRI_TRANSITIONS=26} [2023-11-17 15:20:03,635 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-11-17 15:20:03,635 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 26 transitions, 142 flow [2023-11-17 15:20:03,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 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 15:20:03,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:03,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:20:03,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:20:03,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:20:03,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:03,651 INFO L85 PathProgramCache]: Analyzing trace with hash -468875113, now seen corresponding path program 2 times [2023-11-17 15:20:03,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:03,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775941726] [2023-11-17 15:20:03,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:03,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:03,724 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 15:20:03,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:03,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775941726] [2023-11-17 15:20:03,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775941726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:03,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:03,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:20:03,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401598564] [2023-11-17 15:20:03,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:03,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:20:03,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:03,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:20:03,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:20:03,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 161 [2023-11-17 15:20:03,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 26 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 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 15:20:03,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:03,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 161 [2023-11-17 15:20:03,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:03,780 INFO L124 PetriNetUnfolderBase]: 98/215 cut-off events. [2023-11-17 15:20:03,780 INFO L125 PetriNetUnfolderBase]: For 390/390 co-relation queries the response was YES. [2023-11-17 15:20:03,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 817 conditions, 215 events. 98/215 cut-off events. For 390/390 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 916 event pairs, 10 based on Foata normal form. 1/216 useless extension candidates. Maximal degree in co-relation 807. Up to 92 conditions per place. [2023-11-17 15:20:03,781 INFO L140 encePairwiseOnDemand]: 158/161 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2023-11-17 15:20:03,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 367 flow [2023-11-17 15:20:03,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:20:03,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:20:03,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2023-11-17 15:20:03,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5667701863354038 [2023-11-17 15:20:03,783 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 365 transitions. [2023-11-17 15:20:03,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 365 transitions. [2023-11-17 15:20:03,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:03,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 365 transitions. [2023-11-17 15:20:03,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 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 15:20:03,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 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 15:20:03,785 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 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 15:20:03,785 INFO L175 Difference]: Start difference. First operand has 41 places, 26 transitions, 142 flow. Second operand 4 states and 365 transitions. [2023-11-17 15:20:03,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 367 flow [2023-11-17 15:20:03,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 49 transitions, 345 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:20:03,787 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-11-17 15:20:03,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-11-17 15:20:03,787 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-11-17 15:20:03,788 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-11-17 15:20:03,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 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 15:20:03,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 15:20:03,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 15:20:03,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 15:20:03,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 15:20:03,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:20:03,791 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-17 15:20:03,793 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:20:03,793 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:20:03,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:20:03 BasicIcfg [2023-11-17 15:20:03,796 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:20:03,796 INFO L158 Benchmark]: Toolchain (without parser) took 4467.16ms. Allocated memory was 219.2MB in the beginning and 267.4MB in the end (delta: 48.2MB). Free memory was 175.9MB in the beginning and 191.5MB in the end (delta: -15.6MB). Peak memory consumption was 33.7MB. Max. memory is 8.0GB. [2023-11-17 15:20:03,796 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 182.5MB. Free memory was 132.8MB in the beginning and 132.7MB in the end (delta: 89.6kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:20:03,797 INFO L158 Benchmark]: CACSL2BoogieTranslator took 415.01ms. Allocated memory is still 219.2MB. Free memory was 175.4MB in the beginning and 155.5MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 15:20:03,797 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.04ms. Allocated memory is still 219.2MB. Free memory was 155.0MB in the beginning and 153.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 15:20:03,797 INFO L158 Benchmark]: Boogie Preprocessor took 29.95ms. Allocated memory is still 219.2MB. Free memory was 153.4MB in the beginning and 151.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:20:03,797 INFO L158 Benchmark]: RCFGBuilder took 510.00ms. Allocated memory is still 219.2MB. Free memory was 151.8MB in the beginning and 137.7MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-17 15:20:03,798 INFO L158 Benchmark]: TraceAbstraction took 3457.93ms. Allocated memory was 219.2MB in the beginning and 267.4MB in the end (delta: 48.2MB). Free memory was 137.1MB in the beginning and 191.5MB in the end (delta: -54.4MB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:20:03,799 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 182.5MB. Free memory was 132.8MB in the beginning and 132.7MB in the end (delta: 89.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 415.01ms. Allocated memory is still 219.2MB. Free memory was 175.4MB in the beginning and 155.5MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.04ms. Allocated memory is still 219.2MB. Free memory was 155.0MB in the beginning and 153.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.95ms. Allocated memory is still 219.2MB. Free memory was 153.4MB in the beginning and 151.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 510.00ms. Allocated memory is still 219.2MB. Free memory was 151.8MB in the beginning and 137.7MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3457.93ms. Allocated memory was 219.2MB in the beginning and 267.4MB in the end (delta: 48.2MB). Free memory was 137.1MB in the beginning and 191.5MB in the end (delta: -54.4MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 86 PlacesBefore, 27 PlacesAfterwards, 77 TransitionsBefore, 18 TransitionsAfterwards, 1584 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 66 TotalNumberOfCompositions, 2105 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1355, independent: 1288, independent conditional: 0, independent unconditional: 1288, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1035, independent: 1005, independent conditional: 0, independent unconditional: 1005, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1035, independent: 995, independent conditional: 0, independent unconditional: 995, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 62, independent: 16, independent conditional: 0, independent unconditional: 16, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1355, independent: 283, independent conditional: 0, independent unconditional: 283, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 1035, unknown conditional: 0, unknown unconditional: 1035] , Statistics on independence cache: Total cache size (in pairs): 57, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 124 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: 3.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 78 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 342 IncrementalHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 0 mSDtfsCounter, 342 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=5, InterpolantAutomatonStates: 29, 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, 0.8s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 15:20:03,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...