/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/weaver/test-easy6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:35:06,726 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:35:06,782 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 16:35:06,807 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:35:06,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:35:06,808 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:35:06,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:35:06,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:35:06,808 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:35:06,811 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:35:06,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:35:06,812 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:35:06,812 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:35:06,813 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:35:06,813 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:35:06,813 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:35:06,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:35:06,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:35:06,813 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:35:06,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:35:06,814 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:35:06,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:35:06,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:35:06,815 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:35:06,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:35:06,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:35:06,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:35:06,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:35:06,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:35:06,815 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:35:06,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:35:06,816 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:35:06,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:35:07,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:35:07,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:35:07,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:35:07,018 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:35:07,018 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:35:07,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-11-17 16:35:07,925 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:35:08,063 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:35:08,063 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-11-17 16:35:08,069 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14ae685d8/4309608a2265419fb2a8e1108760306c/FLAG9bc98ddb8 [2023-11-17 16:35:08,078 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14ae685d8/4309608a2265419fb2a8e1108760306c [2023-11-17 16:35:08,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:35:08,081 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:35:08,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:35:08,083 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:35:08,086 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:35:08,086 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:35:08" (1/1) ... [2023-11-17 16:35:08,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@558a073a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:35:08, skipping insertion in model container [2023-11-17 16:35:08,087 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:35:08" (1/1) ... [2023-11-17 16:35:08,101 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:35:08,241 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c[3072,3085] [2023-11-17 16:35:08,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:35:08,257 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:35:08,275 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c[3072,3085] [2023-11-17 16:35:08,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:35:08,280 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:35:08,280 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:35:08,285 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:35:08,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:35:08 WrapperNode [2023-11-17 16:35:08,285 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:35:08,286 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:35:08,286 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:35:08,286 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:35:08,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:35:08" (1/1) ... [2023-11-17 16:35:08,295 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:35:08" (1/1) ... [2023-11-17 16:35:08,309 INFO L138 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 124 [2023-11-17 16:35:08,309 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:35:08,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:35:08,310 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:35:08,310 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:35:08,314 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:35:08" (1/1) ... [2023-11-17 16:35:08,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:35:08" (1/1) ... [2023-11-17 16:35:08,316 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:35:08" (1/1) ... [2023-11-17 16:35:08,316 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:35:08" (1/1) ... [2023-11-17 16:35:08,320 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:35:08" (1/1) ... [2023-11-17 16:35:08,321 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:35:08" (1/1) ... [2023-11-17 16:35:08,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:35:08" (1/1) ... [2023-11-17 16:35:08,322 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:35:08" (1/1) ... [2023-11-17 16:35:08,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:35:08,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:35:08,324 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:35:08,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:35:08,324 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:35:08" (1/1) ... [2023-11-17 16:35:08,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:35:08,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:35:08,346 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 16:35:08,353 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 16:35:08,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:35:08,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:35:08,376 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:35:08,376 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:35:08,376 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:35:08,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:35:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:35:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:35:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:35:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:35:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:35:08,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:35:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:35:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:35:08,378 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 16:35:08,441 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:35:08,443 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:35:08,551 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:35:08,617 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:35:08,617 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 16:35:08,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:35:08 BoogieIcfgContainer [2023-11-17 16:35:08,619 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:35:08,620 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:35:08,620 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:35:08,622 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:35:08,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:35:08" (1/3) ... [2023-11-17 16:35:08,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72918b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:35:08, skipping insertion in model container [2023-11-17 16:35:08,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:35:08" (2/3) ... [2023-11-17 16:35:08,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72918b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:35:08, skipping insertion in model container [2023-11-17 16:35:08,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:35:08" (3/3) ... [2023-11-17 16:35:08,624 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2023-11-17 16:35:08,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:35:08,635 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:35:08,635 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:35:08,691 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 16:35:08,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 81 transitions, 176 flow [2023-11-17 16:35:08,746 INFO L124 PetriNetUnfolderBase]: 1/79 cut-off events. [2023-11-17 16:35:08,747 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:35:08,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 1/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2023-11-17 16:35:08,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 81 transitions, 176 flow [2023-11-17 16:35:08,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 70 transitions, 152 flow [2023-11-17 16:35:08,754 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:35:08,762 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 70 transitions, 152 flow [2023-11-17 16:35:08,763 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 70 transitions, 152 flow [2023-11-17 16:35:08,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 70 transitions, 152 flow [2023-11-17 16:35:08,778 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2023-11-17 16:35:08,779 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:35:08,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 70 events. 1/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2023-11-17 16:35:08,779 INFO L119 LiptonReduction]: Number of co-enabled transitions 648 [2023-11-17 16:35:10,281 INFO L134 LiptonReduction]: Checked pairs total: 2356 [2023-11-17 16:35:10,282 INFO L136 LiptonReduction]: Total number of compositions: 52 [2023-11-17 16:35:10,292 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:35:10,297 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;@b3677f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:35:10,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 16:35:10,301 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:35:10,301 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2023-11-17 16:35:10,301 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:35:10,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:10,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:10,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:10,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:10,306 INFO L85 PathProgramCache]: Analyzing trace with hash -97601501, now seen corresponding path program 1 times [2023-11-17 16:35:10,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:10,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919578916] [2023-11-17 16:35:10,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:10,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:10,648 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 16:35:10,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:10,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919578916] [2023-11-17 16:35:10,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919578916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:10,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:35:10,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:35:10,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661773179] [2023-11-17 16:35:10,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:10,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:35:10,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:10,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:35:10,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:35:10,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 133 [2023-11-17 16:35:10,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 58 flow. Second operand has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 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 16:35:10,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:10,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 133 [2023-11-17 16:35:10,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:10,887 INFO L124 PetriNetUnfolderBase]: 217/431 cut-off events. [2023-11-17 16:35:10,887 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-17 16:35:10,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 903 conditions, 431 events. 217/431 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1558 event pairs, 95 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 756. Up to 180 conditions per place. [2023-11-17 16:35:10,893 INFO L140 encePairwiseOnDemand]: 127/133 looper letters, 42 selfloop transitions, 6 changer transitions 14/62 dead transitions. [2023-11-17 16:35:10,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 62 transitions, 281 flow [2023-11-17 16:35:10,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:35:10,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:35:10,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 504 transitions. [2023-11-17 16:35:10,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5413533834586466 [2023-11-17 16:35:10,907 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 504 transitions. [2023-11-17 16:35:10,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 504 transitions. [2023-11-17 16:35:10,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:10,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 504 transitions. [2023-11-17 16:35:10,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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 16:35:10,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 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 16:35:10,916 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 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 16:35:10,918 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 58 flow. Second operand 7 states and 504 transitions. [2023-11-17 16:35:10,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 62 transitions, 281 flow [2023-11-17 16:35:10,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 62 transitions, 259 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 16:35:10,922 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 85 flow [2023-11-17 16:35:10,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=85, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-11-17 16:35:10,927 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-11-17 16:35:10,927 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 85 flow [2023-11-17 16:35:10,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 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 16:35:10,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:10,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:10,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:35:10,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:10,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:10,930 INFO L85 PathProgramCache]: Analyzing trace with hash 156261609, now seen corresponding path program 2 times [2023-11-17 16:35:10,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:10,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299748069] [2023-11-17 16:35:10,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:10,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:11,102 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 16:35:11,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:11,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299748069] [2023-11-17 16:35:11,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299748069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:11,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:35:11,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:35:11,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061753556] [2023-11-17 16:35:11,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:11,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:35:11,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:11,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:35:11,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:35:11,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 133 [2023-11-17 16:35:11,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 85 flow. Second operand has 7 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 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 16:35:11,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:11,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 133 [2023-11-17 16:35:11,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:11,243 INFO L124 PetriNetUnfolderBase]: 204/499 cut-off events. [2023-11-17 16:35:11,243 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-11-17 16:35:11,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 499 events. 204/499 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2565 event pairs, 24 based on Foata normal form. 6/495 useless extension candidates. Maximal degree in co-relation 1010. Up to 86 conditions per place. [2023-11-17 16:35:11,246 INFO L140 encePairwiseOnDemand]: 125/133 looper letters, 47 selfloop transitions, 15 changer transitions 3/73 dead transitions. [2023-11-17 16:35:11,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 73 transitions, 314 flow [2023-11-17 16:35:11,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:35:11,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:35:11,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 615 transitions. [2023-11-17 16:35:11,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137844611528822 [2023-11-17 16:35:11,248 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 615 transitions. [2023-11-17 16:35:11,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 615 transitions. [2023-11-17 16:35:11,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:11,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 615 transitions. [2023-11-17 16:35:11,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.33333333333333) internal successors, (615), 9 states have internal predecessors, (615), 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 16:35:11,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 133.0) internal successors, (1330), 10 states have internal predecessors, (1330), 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 16:35:11,252 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 133.0) internal successors, (1330), 10 states have internal predecessors, (1330), 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 16:35:11,252 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 85 flow. Second operand 9 states and 615 transitions. [2023-11-17 16:35:11,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 73 transitions, 314 flow [2023-11-17 16:35:11,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 73 transitions, 310 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 16:35:11,255 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 164 flow [2023-11-17 16:35:11,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=164, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-11-17 16:35:11,255 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2023-11-17 16:35:11,255 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 164 flow [2023-11-17 16:35:11,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 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 16:35:11,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:11,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:11,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:35:11,256 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:11,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:11,257 INFO L85 PathProgramCache]: Analyzing trace with hash 996976767, now seen corresponding path program 3 times [2023-11-17 16:35:11,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:11,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175462376] [2023-11-17 16:35:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:11,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:11,353 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 16:35:11,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:11,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175462376] [2023-11-17 16:35:11,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175462376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:11,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:35:11,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:35:11,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945747419] [2023-11-17 16:35:11,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:11,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:35:11,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:11,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:35:11,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:35:11,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 133 [2023-11-17 16:35:11,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 164 flow. Second operand has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 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 16:35:11,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:11,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 133 [2023-11-17 16:35:11,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:11,505 INFO L124 PetriNetUnfolderBase]: 360/717 cut-off events. [2023-11-17 16:35:11,506 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2023-11-17 16:35:11,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1942 conditions, 717 events. 360/717 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3200 event pairs, 151 based on Foata normal form. 2/719 useless extension candidates. Maximal degree in co-relation 795. Up to 308 conditions per place. [2023-11-17 16:35:11,509 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 42 selfloop transitions, 5 changer transitions 38/85 dead transitions. [2023-11-17 16:35:11,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 85 transitions, 500 flow [2023-11-17 16:35:11,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:35:11,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:35:11,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 497 transitions. [2023-11-17 16:35:11,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338345864661654 [2023-11-17 16:35:11,510 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 497 transitions. [2023-11-17 16:35:11,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 497 transitions. [2023-11-17 16:35:11,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:11,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 497 transitions. [2023-11-17 16:35:11,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.0) internal successors, (497), 7 states have internal predecessors, (497), 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 16:35:11,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 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 16:35:11,513 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 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 16:35:11,513 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 164 flow. Second operand 7 states and 497 transitions. [2023-11-17 16:35:11,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 85 transitions, 500 flow [2023-11-17 16:35:11,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 85 transitions, 500 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 16:35:11,516 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 147 flow [2023-11-17 16:35:11,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=147, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2023-11-17 16:35:11,517 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2023-11-17 16:35:11,517 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 147 flow [2023-11-17 16:35:11,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 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 16:35:11,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:11,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:11,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 16:35:11,518 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:11,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:11,518 INFO L85 PathProgramCache]: Analyzing trace with hash 52155675, now seen corresponding path program 4 times [2023-11-17 16:35:11,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:11,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950991306] [2023-11-17 16:35:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:11,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:11,553 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 16:35:11,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:11,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950991306] [2023-11-17 16:35:11,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950991306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:11,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:35:11,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:35:11,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341595338] [2023-11-17 16:35:11,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:11,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:35:11,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:11,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:35:11,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:35:11,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 133 [2023-11-17 16:35:11,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 16:35:11,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:11,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 133 [2023-11-17 16:35:11,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:11,597 INFO L124 PetriNetUnfolderBase]: 155/412 cut-off events. [2023-11-17 16:35:11,597 INFO L125 PetriNetUnfolderBase]: For 300/316 co-relation queries the response was YES. [2023-11-17 16:35:11,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1089 conditions, 412 events. 155/412 cut-off events. For 300/316 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2038 event pairs, 121 based on Foata normal form. 2/404 useless extension candidates. Maximal degree in co-relation 1066. Up to 319 conditions per place. [2023-11-17 16:35:11,599 INFO L140 encePairwiseOnDemand]: 130/133 looper letters, 27 selfloop transitions, 3 changer transitions 3/39 dead transitions. [2023-11-17 16:35:11,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 229 flow [2023-11-17 16:35:11,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:35:11,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:35:11,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-11-17 16:35:11,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5739348370927319 [2023-11-17 16:35:11,600 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-11-17 16:35:11,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-11-17 16:35:11,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:11,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-11-17 16:35:11,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 16:35:11,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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 16:35:11,602 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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 16:35:11,602 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 147 flow. Second operand 3 states and 229 transitions. [2023-11-17 16:35:11,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 229 flow [2023-11-17 16:35:11,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 214 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-17 16:35:11,604 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 143 flow [2023-11-17 16:35:11,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2023-11-17 16:35:11,605 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2023-11-17 16:35:11,605 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 143 flow [2023-11-17 16:35:11,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 16:35:11,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:11,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:11,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 16:35:11,605 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:11,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:11,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1286911445, now seen corresponding path program 5 times [2023-11-17 16:35:11,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:11,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910447591] [2023-11-17 16:35:11,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:11,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:11,639 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 16:35:11,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:11,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910447591] [2023-11-17 16:35:11,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910447591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:11,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:35:11,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:35:11,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047612484] [2023-11-17 16:35:11,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:11,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:35:11,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:11,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:35:11,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:35:11,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 133 [2023-11-17 16:35:11,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 16:35:11,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:11,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 133 [2023-11-17 16:35:11,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:11,683 INFO L124 PetriNetUnfolderBase]: 145/382 cut-off events. [2023-11-17 16:35:11,683 INFO L125 PetriNetUnfolderBase]: For 245/265 co-relation queries the response was YES. [2023-11-17 16:35:11,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 382 events. 145/382 cut-off events. For 245/265 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1868 event pairs, 105 based on Foata normal form. 8/380 useless extension candidates. Maximal degree in co-relation 412. Up to 291 conditions per place. [2023-11-17 16:35:11,684 INFO L140 encePairwiseOnDemand]: 130/133 looper letters, 29 selfloop transitions, 5 changer transitions 1/41 dead transitions. [2023-11-17 16:35:11,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 241 flow [2023-11-17 16:35:11,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:35:11,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:35:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-11-17 16:35:11,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2023-11-17 16:35:11,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-11-17 16:35:11,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-11-17 16:35:11,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:11,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-11-17 16:35:11,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 16:35:11,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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 16:35:11,688 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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 16:35:11,688 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 143 flow. Second operand 3 states and 231 transitions. [2023-11-17 16:35:11,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 241 flow [2023-11-17 16:35:11,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 231 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 16:35:11,690 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 154 flow [2023-11-17 16:35:11,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-11-17 16:35:11,690 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2023-11-17 16:35:11,691 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 154 flow [2023-11-17 16:35:11,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 16:35:11,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:11,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:11,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 16:35:11,691 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:11,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:11,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1352039119, now seen corresponding path program 6 times [2023-11-17 16:35:11,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:11,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491035540] [2023-11-17 16:35:11,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:11,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:11,776 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 16:35:11,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:11,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491035540] [2023-11-17 16:35:11,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491035540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:11,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:35:11,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:35:11,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030341420] [2023-11-17 16:35:11,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:11,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:35:11,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:11,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:35:11,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:35:11,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 133 [2023-11-17 16:35:11,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 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 16:35:11,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:11,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 133 [2023-11-17 16:35:11,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:11,902 INFO L124 PetriNetUnfolderBase]: 155/424 cut-off events. [2023-11-17 16:35:11,902 INFO L125 PetriNetUnfolderBase]: For 311/339 co-relation queries the response was YES. [2023-11-17 16:35:11,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 424 events. 155/424 cut-off events. For 311/339 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2123 event pairs, 35 based on Foata normal form. 18/432 useless extension candidates. Maximal degree in co-relation 514. Up to 128 conditions per place. [2023-11-17 16:35:11,904 INFO L140 encePairwiseOnDemand]: 126/133 looper letters, 39 selfloop transitions, 8 changer transitions 13/66 dead transitions. [2023-11-17 16:35:11,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 370 flow [2023-11-17 16:35:11,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:35:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:35:11,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 548 transitions. [2023-11-17 16:35:11,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150375939849624 [2023-11-17 16:35:11,906 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 548 transitions. [2023-11-17 16:35:11,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 548 transitions. [2023-11-17 16:35:11,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:11,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 548 transitions. [2023-11-17 16:35:11,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.5) internal successors, (548), 8 states have internal predecessors, (548), 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 16:35:11,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 133.0) internal successors, (1197), 9 states have internal predecessors, (1197), 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 16:35:11,911 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 133.0) internal successors, (1197), 9 states have internal predecessors, (1197), 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 16:35:11,911 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 154 flow. Second operand 8 states and 548 transitions. [2023-11-17 16:35:11,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 370 flow [2023-11-17 16:35:11,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 66 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 16:35:11,913 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 150 flow [2023-11-17 16:35:11,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=150, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2023-11-17 16:35:11,915 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2023-11-17 16:35:11,915 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 150 flow [2023-11-17 16:35:11,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 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 16:35:11,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:11,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:11,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 16:35:11,915 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:11,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:11,916 INFO L85 PathProgramCache]: Analyzing trace with hash -615038359, now seen corresponding path program 7 times [2023-11-17 16:35:11,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:11,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68868308] [2023-11-17 16:35:11,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:11,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:12,021 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 16:35:12,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:12,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68868308] [2023-11-17 16:35:12,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68868308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:12,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:35:12,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:35:12,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975301912] [2023-11-17 16:35:12,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:12,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:35:12,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:12,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:35:12,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:35:12,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 133 [2023-11-17 16:35:12,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 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 16:35:12,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:12,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 133 [2023-11-17 16:35:12,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:12,103 INFO L124 PetriNetUnfolderBase]: 91/240 cut-off events. [2023-11-17 16:35:12,104 INFO L125 PetriNetUnfolderBase]: For 180/200 co-relation queries the response was YES. [2023-11-17 16:35:12,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 240 events. 91/240 cut-off events. For 180/200 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 960 event pairs, 25 based on Foata normal form. 10/244 useless extension candidates. Maximal degree in co-relation 348. Up to 128 conditions per place. [2023-11-17 16:35:12,105 INFO L140 encePairwiseOnDemand]: 126/133 looper letters, 21 selfloop transitions, 3 changer transitions 10/40 dead transitions. [2023-11-17 16:35:12,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 233 flow [2023-11-17 16:35:12,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:35:12,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:35:12,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 339 transitions. [2023-11-17 16:35:12,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5097744360902255 [2023-11-17 16:35:12,106 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 339 transitions. [2023-11-17 16:35:12,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 339 transitions. [2023-11-17 16:35:12,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:12,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 339 transitions. [2023-11-17 16:35:12,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 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 16:35:12,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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 16:35:12,108 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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 16:35:12,108 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 150 flow. Second operand 5 states and 339 transitions. [2023-11-17 16:35:12,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 233 flow [2023-11-17 16:35:12,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 207 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-11-17 16:35:12,109 INFO L231 Difference]: Finished difference. Result has 43 places, 26 transitions, 101 flow [2023-11-17 16:35:12,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2023-11-17 16:35:12,110 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2023-11-17 16:35:12,110 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 101 flow [2023-11-17 16:35:12,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 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 16:35:12,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:12,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:12,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 16:35:12,114 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:12,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:12,114 INFO L85 PathProgramCache]: Analyzing trace with hash -75854397, now seen corresponding path program 8 times [2023-11-17 16:35:12,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:12,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997910170] [2023-11-17 16:35:12,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:12,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:12,201 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 16:35:12,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:12,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997910170] [2023-11-17 16:35:12,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997910170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:12,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:35:12,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:35:12,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273442141] [2023-11-17 16:35:12,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:12,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:35:12,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:12,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:35:12,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:35:12,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 133 [2023-11-17 16:35:12,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 26 transitions, 101 flow. Second operand has 7 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 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 16:35:12,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:12,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 133 [2023-11-17 16:35:12,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:12,249 INFO L124 PetriNetUnfolderBase]: 29/72 cut-off events. [2023-11-17 16:35:12,249 INFO L125 PetriNetUnfolderBase]: For 38/46 co-relation queries the response was YES. [2023-11-17 16:35:12,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 72 events. 29/72 cut-off events. For 38/46 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 171 event pairs, 2 based on Foata normal form. 8/80 useless extension candidates. Maximal degree in co-relation 164. Up to 26 conditions per place. [2023-11-17 16:35:12,249 INFO L140 encePairwiseOnDemand]: 127/133 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2023-11-17 16:35:12,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 25 transitions, 134 flow [2023-11-17 16:35:12,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:35:12,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:35:12,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 451 transitions. [2023-11-17 16:35:12,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48442534908700324 [2023-11-17 16:35:12,251 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 451 transitions. [2023-11-17 16:35:12,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 451 transitions. [2023-11-17 16:35:12,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:12,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 451 transitions. [2023-11-17 16:35:12,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.42857142857143) internal successors, (451), 7 states have internal predecessors, (451), 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 16:35:12,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 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 16:35:12,253 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 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 16:35:12,253 INFO L175 Difference]: Start difference. First operand has 43 places, 26 transitions, 101 flow. Second operand 7 states and 451 transitions. [2023-11-17 16:35:12,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 25 transitions, 134 flow [2023-11-17 16:35:12,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 113 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-11-17 16:35:12,254 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-11-17 16:35:12,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-11-17 16:35:12,254 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-11-17 16:35:12,254 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-11-17 16:35:12,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 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 16:35:12,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 16:35:12,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 16:35:12,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 16:35:12,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 16:35:12,257 INFO L445 BasicCegarLoop]: Path program histogram: [8] [2023-11-17 16:35:12,259 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:35:12,259 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:35:12,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:35:12 BasicIcfg [2023-11-17 16:35:12,261 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:35:12,262 INFO L158 Benchmark]: Toolchain (without parser) took 4180.67ms. Allocated memory was 184.5MB in the beginning and 252.7MB in the end (delta: 68.2MB). Free memory was 136.4MB in the beginning and 144.9MB in the end (delta: -8.5MB). Peak memory consumption was 60.7MB. Max. memory is 8.0GB. [2023-11-17 16:35:12,262 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory is still 132.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:35:12,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.46ms. Allocated memory is still 184.5MB. Free memory was 136.4MB in the beginning and 124.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 16:35:12,262 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.41ms. Allocated memory is still 184.5MB. Free memory was 124.9MB in the beginning and 123.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 16:35:12,263 INFO L158 Benchmark]: Boogie Preprocessor took 13.95ms. Allocated memory is still 184.5MB. Free memory was 123.3MB in the beginning and 121.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:35:12,263 INFO L158 Benchmark]: RCFGBuilder took 294.87ms. Allocated memory is still 184.5MB. Free memory was 121.7MB in the beginning and 105.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-11-17 16:35:12,263 INFO L158 Benchmark]: TraceAbstraction took 3641.24ms. Allocated memory was 184.5MB in the beginning and 252.7MB in the end (delta: 68.2MB). Free memory was 104.4MB in the beginning and 144.9MB in the end (delta: -40.5MB). Peak memory consumption was 29.2MB. Max. memory is 8.0GB. [2023-11-17 16:35:12,264 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory is still 132.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 202.46ms. Allocated memory is still 184.5MB. Free memory was 136.4MB in the beginning and 124.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.41ms. Allocated memory is still 184.5MB. Free memory was 124.9MB in the beginning and 123.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.95ms. Allocated memory is still 184.5MB. Free memory was 123.3MB in the beginning and 121.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 294.87ms. Allocated memory is still 184.5MB. Free memory was 121.7MB in the beginning and 105.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 3641.24ms. Allocated memory was 184.5MB in the beginning and 252.7MB in the end (delta: 68.2MB). Free memory was 104.4MB in the beginning and 144.9MB in the end (delta: -40.5MB). Peak memory consumption was 29.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 76 PlacesBefore, 30 PlacesAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 648 CoEnabledTransitionPairs, 5 FixpointIterations, 31 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 52 TotalNumberOfCompositions, 2356 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1365, independent: 1214, independent conditional: 0, independent unconditional: 1214, dependent: 151, dependent conditional: 0, dependent unconditional: 151, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 540, independent: 494, independent conditional: 0, independent unconditional: 494, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 540, independent: 487, independent conditional: 0, independent unconditional: 487, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 53, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 89, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1365, independent: 720, independent conditional: 0, independent unconditional: 720, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 540, unknown conditional: 0, unknown unconditional: 540] , Statistics on independence cache: Total cache size (in pairs): 138, Positive cache size: 116, Positive conditional cache size: 0, Positive unconditional cache size: 116, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 116]: 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 5 procedures, 109 locations, 3 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: 3.5s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 354 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 354 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 869 IncrementalHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 4 mSDtfsCounter, 869 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=2, InterpolantAutomatonStates: 49, 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, 0.7s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 512 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 16:35:12,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...