/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 01:29:53,506 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 01:29:53,570 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-VariableLbe.epf [2023-08-24 01:29:53,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 01:29:53,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 01:29:53,598 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 01:29:53,598 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 01:29:53,599 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 01:29:53,599 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 01:29:53,602 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 01:29:53,602 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 01:29:53,602 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 01:29:53,602 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 01:29:53,603 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 01:29:53,603 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 01:29:53,603 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 01:29:53,603 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 01:29:53,604 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 01:29:53,604 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 01:29:53,604 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 01:29:53,604 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 01:29:53,605 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 01:29:53,605 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 01:29:53,605 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 01:29:53,605 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 01:29:53,605 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 01:29:53,605 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 01:29:53,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:29:53,606 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 01:29:53,606 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 01:29:53,607 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 01:29:53,607 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 01:29:53,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 01:29:53,607 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 01:29:53,607 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 01:29:53,607 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 01:29:53,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 01:29:53,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 01:29:53,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 01:29:53,868 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 01:29:53,868 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 01:29:53,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2023-08-24 01:29:54,846 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 01:29:55,035 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 01:29:55,036 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2023-08-24 01:29:55,041 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/279ab3e14/def771a6a3684c479e270be349c3e976/FLAG44e1c49fa [2023-08-24 01:29:55,050 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/279ab3e14/def771a6a3684c479e270be349c3e976 [2023-08-24 01:29:55,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 01:29:55,052 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 01:29:55,053 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 01:29:55,053 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 01:29:55,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 01:29:55,055 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:29:55" (1/1) ... [2023-08-24 01:29:55,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11805624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:29:55, skipping insertion in model container [2023-08-24 01:29:55,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:29:55" (1/1) ... [2023-08-24 01:29:55,072 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 01:29:55,169 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/parallel-bakery-3.wvr.c[5426,5439] [2023-08-24 01:29:55,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:29:55,176 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 01:29:55,193 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/parallel-bakery-3.wvr.c[5426,5439] [2023-08-24 01:29:55,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:29:55,198 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 01:29:55,198 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 01:29:55,203 INFO L206 MainTranslator]: Completed translation [2023-08-24 01:29:55,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:29:55 WrapperNode [2023-08-24 01:29:55,203 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 01:29:55,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 01:29:55,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 01:29:55,204 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 01:29:55,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:29:55" (1/1) ... [2023-08-24 01:29:55,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:29:55" (1/1) ... [2023-08-24 01:29:55,251 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 265 [2023-08-24 01:29:55,251 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 01:29:55,252 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 01:29:55,252 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 01:29:55,252 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 01:29:55,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:29:55" (1/1) ... [2023-08-24 01:29:55,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:29:55" (1/1) ... [2023-08-24 01:29:55,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:29:55" (1/1) ... [2023-08-24 01:29:55,262 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:29:55" (1/1) ... [2023-08-24 01:29:55,266 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:29:55" (1/1) ... [2023-08-24 01:29:55,267 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:29:55" (1/1) ... [2023-08-24 01:29:55,268 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:29:55" (1/1) ... [2023-08-24 01:29:55,269 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:29:55" (1/1) ... [2023-08-24 01:29:55,271 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 01:29:55,271 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 01:29:55,271 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 01:29:55,272 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 01:29:55,272 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:29:55" (1/1) ... [2023-08-24 01:29:55,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:29:55,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:29:55,303 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) [2023-08-24 01:29:55,309 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 [2023-08-24 01:29:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 01:29:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 01:29:55,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 01:29:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 01:29:55,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 01:29:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 01:29:55,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 01:29:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 01:29:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 01:29:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 01:29:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 01:29:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 01:29:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 01:29:55,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 01:29:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 01:29:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 01:29:55,330 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 01:29:55,416 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 01:29:55,417 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 01:29:55,718 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 01:29:55,773 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 01:29:55,773 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 01:29:55,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:29:55 BoogieIcfgContainer [2023-08-24 01:29:55,775 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 01:29:55,776 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 01:29:55,776 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 01:29:55,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 01:29:55,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:29:55" (1/3) ... [2023-08-24 01:29:55,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20929a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:29:55, skipping insertion in model container [2023-08-24 01:29:55,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:29:55" (2/3) ... [2023-08-24 01:29:55,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20929a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:29:55, skipping insertion in model container [2023-08-24 01:29:55,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:29:55" (3/3) ... [2023-08-24 01:29:55,780 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2023-08-24 01:29:55,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 01:29:55,791 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 01:29:55,791 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 01:29:55,829 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 01:29:55,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 155 transitions, 334 flow [2023-08-24 01:29:55,939 INFO L124 PetriNetUnfolderBase]: 2/152 cut-off events. [2023-08-24 01:29:55,939 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:29:55,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 152 events. 2/152 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-08-24 01:29:55,942 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 155 transitions, 334 flow [2023-08-24 01:29:55,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 142 transitions, 302 flow [2023-08-24 01:29:55,947 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 01:29:55,952 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 142 transitions, 302 flow [2023-08-24 01:29:55,953 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 142 transitions, 302 flow [2023-08-24 01:29:55,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 142 transitions, 302 flow [2023-08-24 01:29:55,978 INFO L124 PetriNetUnfolderBase]: 2/142 cut-off events. [2023-08-24 01:29:55,978 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:29:55,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 142 events. 2/142 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 105 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-08-24 01:29:55,980 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-08-24 01:29:59,192 INFO L134 LiptonReduction]: Checked pairs total: 20861 [2023-08-24 01:29:59,192 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-24 01:29:59,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 01:29:59,211 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7936db5c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 01:29:59,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 01:29:59,229 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 01:29:59,229 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2023-08-24 01:29:59,229 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:29:59,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:29:59,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:29:59,230 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:29:59,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:29:59,233 INFO L85 PathProgramCache]: Analyzing trace with hash -685701629, now seen corresponding path program 1 times [2023-08-24 01:29:59,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:29:59,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769346687] [2023-08-24 01:29:59,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:29:59,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:29:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:29:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:29:59,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:29:59,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769346687] [2023-08-24 01:29:59,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769346687] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:29:59,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:29:59,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 01:29:59,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610432869] [2023-08-24 01:29:59,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:29:59,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 01:29:59,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:29:59,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 01:29:59,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-24 01:29:59,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-08-24 01:29:59,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 116 flow. Second operand has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 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) [2023-08-24 01:29:59,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:29:59,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-08-24 01:29:59,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:30:00,671 INFO L124 PetriNetUnfolderBase]: 4666/7168 cut-off events. [2023-08-24 01:30:00,671 INFO L125 PetriNetUnfolderBase]: For 394/394 co-relation queries the response was YES. [2023-08-24 01:30:00,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14639 conditions, 7168 events. 4666/7168 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 41262 event pairs, 1653 based on Foata normal form. 1/7108 useless extension candidates. Maximal degree in co-relation 12818. Up to 2475 conditions per place. [2023-08-24 01:30:00,706 INFO L140 encePairwiseOnDemand]: 247/255 looper letters, 147 selfloop transitions, 15 changer transitions 19/193 dead transitions. [2023-08-24 01:30:00,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 193 transitions, 820 flow [2023-08-24 01:30:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 01:30:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 01:30:00,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1447 transitions. [2023-08-24 01:30:00,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158645276292335 [2023-08-24 01:30:00,719 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1447 transitions. [2023-08-24 01:30:00,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1447 transitions. [2023-08-24 01:30:00,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:30:00,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1447 transitions. [2023-08-24 01:30:00,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.54545454545453) internal successors, (1447), 11 states have internal predecessors, (1447), 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) [2023-08-24 01:30:00,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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) [2023-08-24 01:30:00,734 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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) [2023-08-24 01:30:00,735 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 116 flow. Second operand 11 states and 1447 transitions. [2023-08-24 01:30:00,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 193 transitions, 820 flow [2023-08-24 01:30:00,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 193 transitions, 772 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 01:30:00,749 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 196 flow [2023-08-24 01:30:00,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=196, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-08-24 01:30:00,752 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2023-08-24 01:30:00,753 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 196 flow [2023-08-24 01:30:00,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 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) [2023-08-24 01:30:00,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:30:00,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:30:00,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 01:30:00,754 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:30:00,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:30:00,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1882952335, now seen corresponding path program 2 times [2023-08-24 01:30:00,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:30:00,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513084096] [2023-08-24 01:30:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:30:00,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:30:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:30:01,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:30:01,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:30:01,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513084096] [2023-08-24 01:30:01,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513084096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:30:01,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:30:01,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-24 01:30:01,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903478655] [2023-08-24 01:30:01,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:30:01,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 01:30:01,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:30:01,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 01:30:01,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-08-24 01:30:01,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-08-24 01:30:01,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 196 flow. Second operand has 11 states, 11 states have (on average 118.36363636363636) internal successors, (1302), 11 states have internal predecessors, (1302), 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) [2023-08-24 01:30:01,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:30:01,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-08-24 01:30:01,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:30:02,219 INFO L124 PetriNetUnfolderBase]: 6229/10706 cut-off events. [2023-08-24 01:30:02,220 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2023-08-24 01:30:02,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21707 conditions, 10706 events. 6229/10706 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 74998 event pairs, 2431 based on Foata normal form. 112/10587 useless extension candidates. Maximal degree in co-relation 21685. Up to 6828 conditions per place. [2023-08-24 01:30:02,266 INFO L140 encePairwiseOnDemand]: 244/255 looper letters, 119 selfloop transitions, 22 changer transitions 0/169 dead transitions. [2023-08-24 01:30:02,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 169 transitions, 696 flow [2023-08-24 01:30:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 01:30:02,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 01:30:02,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1178 transitions. [2023-08-24 01:30:02,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132897603485839 [2023-08-24 01:30:02,269 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1178 transitions. [2023-08-24 01:30:02,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1178 transitions. [2023-08-24 01:30:02,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:30:02,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1178 transitions. [2023-08-24 01:30:02,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 130.88888888888889) internal successors, (1178), 9 states have internal predecessors, (1178), 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) [2023-08-24 01:30:02,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 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) [2023-08-24 01:30:02,276 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 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) [2023-08-24 01:30:02,276 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 196 flow. Second operand 9 states and 1178 transitions. [2023-08-24 01:30:02,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 169 transitions, 696 flow [2023-08-24 01:30:02,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 169 transitions, 694 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 01:30:02,286 INFO L231 Difference]: Finished difference. Result has 76 places, 90 transitions, 338 flow [2023-08-24 01:30:02,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=338, PETRI_PLACES=76, PETRI_TRANSITIONS=90} [2023-08-24 01:30:02,287 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 17 predicate places. [2023-08-24 01:30:02,287 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 90 transitions, 338 flow [2023-08-24 01:30:02,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 118.36363636363636) internal successors, (1302), 11 states have internal predecessors, (1302), 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) [2023-08-24 01:30:02,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:30:02,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:30:02,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 01:30:02,288 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:30:02,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:30:02,288 INFO L85 PathProgramCache]: Analyzing trace with hash 743130011, now seen corresponding path program 3 times [2023-08-24 01:30:02,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:30:02,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790677981] [2023-08-24 01:30:02,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:30:02,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:30:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:30:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:30:02,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:30:02,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790677981] [2023-08-24 01:30:02,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790677981] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:30:02,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:30:02,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 01:30:02,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111819796] [2023-08-24 01:30:02,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:30:02,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 01:30:02,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:30:02,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 01:30:02,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 01:30:02,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 255 [2023-08-24 01:30:02,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 90 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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) [2023-08-24 01:30:02,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:30:02,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 255 [2023-08-24 01:30:02,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:30:02,828 INFO L124 PetriNetUnfolderBase]: 4470/8044 cut-off events. [2023-08-24 01:30:02,828 INFO L125 PetriNetUnfolderBase]: For 2236/2348 co-relation queries the response was YES. [2023-08-24 01:30:02,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18789 conditions, 8044 events. 4470/8044 cut-off events. For 2236/2348 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 58832 event pairs, 2793 based on Foata normal form. 214/7873 useless extension candidates. Maximal degree in co-relation 12942. Up to 5240 conditions per place. [2023-08-24 01:30:02,870 INFO L140 encePairwiseOnDemand]: 251/255 looper letters, 69 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-08-24 01:30:02,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 112 transitions, 555 flow [2023-08-24 01:30:02,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 01:30:02,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 01:30:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-08-24 01:30:02,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5594771241830065 [2023-08-24 01:30:02,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-08-24 01:30:02,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-08-24 01:30:02,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:30:02,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-08-24 01:30:02,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2023-08-24 01:30:02,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2023-08-24 01:30:02,874 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2023-08-24 01:30:02,874 INFO L175 Difference]: Start difference. First operand has 76 places, 90 transitions, 338 flow. Second operand 3 states and 428 transitions. [2023-08-24 01:30:02,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 112 transitions, 555 flow [2023-08-24 01:30:02,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 112 transitions, 551 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-24 01:30:02,952 INFO L231 Difference]: Finished difference. Result has 79 places, 90 transitions, 346 flow [2023-08-24 01:30:02,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=79, PETRI_TRANSITIONS=90} [2023-08-24 01:30:02,953 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 20 predicate places. [2023-08-24 01:30:02,953 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 90 transitions, 346 flow [2023-08-24 01:30:02,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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) [2023-08-24 01:30:02,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:30:02,954 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:30:02,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 01:30:02,954 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:30:02,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:30:02,954 INFO L85 PathProgramCache]: Analyzing trace with hash -567865169, now seen corresponding path program 4 times [2023-08-24 01:30:02,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:30:02,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120124318] [2023-08-24 01:30:02,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:30:02,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:30:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:30:03,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:30:03,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:30:03,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120124318] [2023-08-24 01:30:03,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120124318] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:30:03,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:30:03,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 01:30:03,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015163292] [2023-08-24 01:30:03,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:30:03,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 01:30:03,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:30:03,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 01:30:03,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-24 01:30:03,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-08-24 01:30:03,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 90 transitions, 346 flow. Second operand has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 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) [2023-08-24 01:30:03,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:30:03,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-08-24 01:30:03,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:30:04,389 INFO L124 PetriNetUnfolderBase]: 9297/14702 cut-off events. [2023-08-24 01:30:04,390 INFO L125 PetriNetUnfolderBase]: For 4605/4827 co-relation queries the response was YES. [2023-08-24 01:30:04,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37705 conditions, 14702 events. 9297/14702 cut-off events. For 4605/4827 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 96346 event pairs, 3463 based on Foata normal form. 149/14572 useless extension candidates. Maximal degree in co-relation 20049. Up to 3840 conditions per place. [2023-08-24 01:30:04,456 INFO L140 encePairwiseOnDemand]: 247/255 looper letters, 213 selfloop transitions, 29 changer transitions 38/301 dead transitions. [2023-08-24 01:30:04,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 301 transitions, 1625 flow [2023-08-24 01:30:04,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 01:30:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 01:30:04,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1463 transitions. [2023-08-24 01:30:04,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215686274509804 [2023-08-24 01:30:04,460 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1463 transitions. [2023-08-24 01:30:04,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1463 transitions. [2023-08-24 01:30:04,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:30:04,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1463 transitions. [2023-08-24 01:30:04,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 133.0) internal successors, (1463), 11 states have internal predecessors, (1463), 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) [2023-08-24 01:30:04,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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) [2023-08-24 01:30:04,467 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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) [2023-08-24 01:30:04,467 INFO L175 Difference]: Start difference. First operand has 79 places, 90 transitions, 346 flow. Second operand 11 states and 1463 transitions. [2023-08-24 01:30:04,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 301 transitions, 1625 flow [2023-08-24 01:30:04,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 301 transitions, 1621 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 01:30:04,483 INFO L231 Difference]: Finished difference. Result has 93 places, 114 transitions, 583 flow [2023-08-24 01:30:04,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=583, PETRI_PLACES=93, PETRI_TRANSITIONS=114} [2023-08-24 01:30:04,485 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 34 predicate places. [2023-08-24 01:30:04,485 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 114 transitions, 583 flow [2023-08-24 01:30:04,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 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) [2023-08-24 01:30:04,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:30:04,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:30:04,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 01:30:04,486 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:30:04,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:30:04,487 INFO L85 PathProgramCache]: Analyzing trace with hash 734314481, now seen corresponding path program 5 times [2023-08-24 01:30:04,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:30:04,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402472460] [2023-08-24 01:30:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:30:04,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:30:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:30:04,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:30:04,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:30:04,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402472460] [2023-08-24 01:30:04,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402472460] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:30:04,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:30:04,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 01:30:04,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104384596] [2023-08-24 01:30:04,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:30:04,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 01:30:04,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:30:04,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 01:30:04,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-24 01:30:04,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-08-24 01:30:04,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 114 transitions, 583 flow. Second operand has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 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) [2023-08-24 01:30:04,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:30:04,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-08-24 01:30:04,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:30:06,413 INFO L124 PetriNetUnfolderBase]: 10143/17806 cut-off events. [2023-08-24 01:30:06,413 INFO L125 PetriNetUnfolderBase]: For 6335/6856 co-relation queries the response was YES. [2023-08-24 01:30:06,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44243 conditions, 17806 events. 10143/17806 cut-off events. For 6335/6856 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 136361 event pairs, 1429 based on Foata normal form. 192/17629 useless extension candidates. Maximal degree in co-relation 44080. Up to 8077 conditions per place. [2023-08-24 01:30:06,489 INFO L140 encePairwiseOnDemand]: 243/255 looper letters, 182 selfloop transitions, 36 changer transitions 4/275 dead transitions. [2023-08-24 01:30:06,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 275 transitions, 1487 flow [2023-08-24 01:30:06,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 01:30:06,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 01:30:06,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1457 transitions. [2023-08-24 01:30:06,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5194295900178253 [2023-08-24 01:30:06,493 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1457 transitions. [2023-08-24 01:30:06,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1457 transitions. [2023-08-24 01:30:06,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:30:06,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1457 transitions. [2023-08-24 01:30:06,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 132.45454545454547) internal successors, (1457), 11 states have internal predecessors, (1457), 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) [2023-08-24 01:30:06,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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) [2023-08-24 01:30:06,500 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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) [2023-08-24 01:30:06,500 INFO L175 Difference]: Start difference. First operand has 93 places, 114 transitions, 583 flow. Second operand 11 states and 1457 transitions. [2023-08-24 01:30:06,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 275 transitions, 1487 flow [2023-08-24 01:30:06,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 275 transitions, 1477 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-24 01:30:06,539 INFO L231 Difference]: Finished difference. Result has 107 places, 143 transitions, 852 flow [2023-08-24 01:30:06,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=852, PETRI_PLACES=107, PETRI_TRANSITIONS=143} [2023-08-24 01:30:06,540 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 48 predicate places. [2023-08-24 01:30:06,540 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 143 transitions, 852 flow [2023-08-24 01:30:06,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 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) [2023-08-24 01:30:06,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:30:06,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:30:06,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 01:30:06,541 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:30:06,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:30:06,541 INFO L85 PathProgramCache]: Analyzing trace with hash 205183307, now seen corresponding path program 6 times [2023-08-24 01:30:06,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:30:06,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617891483] [2023-08-24 01:30:06,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:30:06,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:30:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:30:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:30:06,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:30:06,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617891483] [2023-08-24 01:30:06,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617891483] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:30:06,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:30:06,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 01:30:06,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106837348] [2023-08-24 01:30:06,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:30:06,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 01:30:06,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:30:06,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 01:30:06,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 01:30:06,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 255 [2023-08-24 01:30:06,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 143 transitions, 852 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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) [2023-08-24 01:30:06,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:30:06,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 255 [2023-08-24 01:30:06,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:30:07,928 INFO L124 PetriNetUnfolderBase]: 8441/15811 cut-off events. [2023-08-24 01:30:07,928 INFO L125 PetriNetUnfolderBase]: For 17320/18750 co-relation queries the response was YES. [2023-08-24 01:30:07,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45533 conditions, 15811 events. 8441/15811 cut-off events. For 17320/18750 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 129500 event pairs, 5050 based on Foata normal form. 483/15664 useless extension candidates. Maximal degree in co-relation 43977. Up to 10075 conditions per place. [2023-08-24 01:30:08,027 INFO L140 encePairwiseOnDemand]: 251/255 looper letters, 93 selfloop transitions, 2 changer transitions 0/178 dead transitions. [2023-08-24 01:30:08,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 178 transitions, 1221 flow [2023-08-24 01:30:08,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 01:30:08,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 01:30:08,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-08-24 01:30:08,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5594771241830065 [2023-08-24 01:30:08,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-08-24 01:30:08,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-08-24 01:30:08,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:30:08,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-08-24 01:30:08,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2023-08-24 01:30:08,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2023-08-24 01:30:08,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2023-08-24 01:30:08,031 INFO L175 Difference]: Start difference. First operand has 107 places, 143 transitions, 852 flow. Second operand 3 states and 428 transitions. [2023-08-24 01:30:08,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 178 transitions, 1221 flow [2023-08-24 01:30:08,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 178 transitions, 1197 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-08-24 01:30:08,156 INFO L231 Difference]: Finished difference. Result has 110 places, 143 transitions, 842 flow [2023-08-24 01:30:08,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=842, PETRI_PLACES=110, PETRI_TRANSITIONS=143} [2023-08-24 01:30:08,157 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 51 predicate places. [2023-08-24 01:30:08,157 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 143 transitions, 842 flow [2023-08-24 01:30:08,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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) [2023-08-24 01:30:08,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:30:08,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:30:08,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 01:30:08,158 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:30:08,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:30:08,158 INFO L85 PathProgramCache]: Analyzing trace with hash 173477283, now seen corresponding path program 7 times [2023-08-24 01:30:08,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:30:08,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432965615] [2023-08-24 01:30:08,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:30:08,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:30:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:30:08,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:30:08,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:30:08,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432965615] [2023-08-24 01:30:08,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432965615] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:30:08,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:30:08,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-24 01:30:08,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498106391] [2023-08-24 01:30:08,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:30:08,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:30:08,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:30:08,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:30:08,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-24 01:30:08,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-08-24 01:30:08,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 143 transitions, 842 flow. Second operand has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 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) [2023-08-24 01:30:08,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:30:08,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-08-24 01:30:08,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:30:12,180 INFO L124 PetriNetUnfolderBase]: 24480/43657 cut-off events. [2023-08-24 01:30:12,180 INFO L125 PetriNetUnfolderBase]: For 49063/50747 co-relation queries the response was YES. [2023-08-24 01:30:12,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128790 conditions, 43657 events. 24480/43657 cut-off events. For 49063/50747 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 394513 event pairs, 3473 based on Foata normal form. 645/43484 useless extension candidates. Maximal degree in co-relation 125263. Up to 13330 conditions per place. [2023-08-24 01:30:12,452 INFO L140 encePairwiseOnDemand]: 240/255 looper letters, 264 selfloop transitions, 91 changer transitions 3/411 dead transitions. [2023-08-24 01:30:12,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 411 transitions, 2668 flow [2023-08-24 01:30:12,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 01:30:12,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 01:30:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1765 transitions. [2023-08-24 01:30:12,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324283559577677 [2023-08-24 01:30:12,456 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1765 transitions. [2023-08-24 01:30:12,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1765 transitions. [2023-08-24 01:30:12,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:30:12,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1765 transitions. [2023-08-24 01:30:12,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 135.76923076923077) internal successors, (1765), 13 states have internal predecessors, (1765), 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) [2023-08-24 01:30:12,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 255.0) internal successors, (3570), 14 states have internal predecessors, (3570), 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) [2023-08-24 01:30:12,463 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 255.0) internal successors, (3570), 14 states have internal predecessors, (3570), 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) [2023-08-24 01:30:12,463 INFO L175 Difference]: Start difference. First operand has 110 places, 143 transitions, 842 flow. Second operand 13 states and 1765 transitions. [2023-08-24 01:30:12,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 411 transitions, 2668 flow [2023-08-24 01:30:13,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 411 transitions, 2664 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 01:30:13,123 INFO L231 Difference]: Finished difference. Result has 131 places, 218 transitions, 1638 flow [2023-08-24 01:30:13,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1638, PETRI_PLACES=131, PETRI_TRANSITIONS=218} [2023-08-24 01:30:13,124 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 72 predicate places. [2023-08-24 01:30:13,124 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 218 transitions, 1638 flow [2023-08-24 01:30:13,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 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) [2023-08-24 01:30:13,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:30:13,125 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:30:13,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 01:30:13,125 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:30:13,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:30:13,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1900573463, now seen corresponding path program 8 times [2023-08-24 01:30:13,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:30:13,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049345761] [2023-08-24 01:30:13,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:30:13,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:30:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:30:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:30:13,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:30:13,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049345761] [2023-08-24 01:30:13,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049345761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:30:13,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:30:13,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 01:30:13,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541755002] [2023-08-24 01:30:13,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:30:13,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 01:30:13,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:30:13,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 01:30:13,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-24 01:30:13,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-08-24 01:30:13,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 218 transitions, 1638 flow. Second operand has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 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) [2023-08-24 01:30:13,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:30:13,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-08-24 01:30:13,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:30:19,153 INFO L124 PetriNetUnfolderBase]: 39307/61011 cut-off events. [2023-08-24 01:30:19,153 INFO L125 PetriNetUnfolderBase]: For 160900/163647 co-relation queries the response was YES. [2023-08-24 01:30:19,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227422 conditions, 61011 events. 39307/61011 cut-off events. For 160900/163647 co-relation queries the response was YES. Maximal size of possible extension queue 1588. Compared 463066 event pairs, 14218 based on Foata normal form. 1619/61581 useless extension candidates. Maximal degree in co-relation 218776. Up to 20286 conditions per place. [2023-08-24 01:30:19,663 INFO L140 encePairwiseOnDemand]: 247/255 looper letters, 427 selfloop transitions, 35 changer transitions 42/569 dead transitions. [2023-08-24 01:30:19,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 569 transitions, 5030 flow [2023-08-24 01:30:19,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 01:30:19,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 01:30:19,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1459 transitions. [2023-08-24 01:30:19,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201426024955437 [2023-08-24 01:30:19,666 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1459 transitions. [2023-08-24 01:30:19,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1459 transitions. [2023-08-24 01:30:19,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:30:19,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1459 transitions. [2023-08-24 01:30:19,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 132.63636363636363) internal successors, (1459), 11 states have internal predecessors, (1459), 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) [2023-08-24 01:30:19,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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) [2023-08-24 01:30:19,672 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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) [2023-08-24 01:30:19,672 INFO L175 Difference]: Start difference. First operand has 131 places, 218 transitions, 1638 flow. Second operand 11 states and 1459 transitions. [2023-08-24 01:30:19,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 569 transitions, 5030 flow [2023-08-24 01:30:22,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 569 transitions, 4860 flow, removed 85 selfloop flow, removed 0 redundant places. [2023-08-24 01:30:22,234 INFO L231 Difference]: Finished difference. Result has 147 places, 235 transitions, 1819 flow [2023-08-24 01:30:22,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1819, PETRI_PLACES=147, PETRI_TRANSITIONS=235} [2023-08-24 01:30:22,236 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 88 predicate places. [2023-08-24 01:30:22,236 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 235 transitions, 1819 flow [2023-08-24 01:30:22,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 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) [2023-08-24 01:30:22,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:30:22,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:30:22,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 01:30:22,237 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:30:22,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:30:22,238 INFO L85 PathProgramCache]: Analyzing trace with hash -580566889, now seen corresponding path program 9 times [2023-08-24 01:30:22,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:30:22,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076188318] [2023-08-24 01:30:22,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:30:22,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:30:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:30:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:30:22,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:30:22,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076188318] [2023-08-24 01:30:22,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076188318] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:30:22,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:30:22,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 01:30:22,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142786633] [2023-08-24 01:30:22,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:30:22,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 01:30:22,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:30:22,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 01:30:22,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 01:30:22,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 255 [2023-08-24 01:30:22,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 235 transitions, 1819 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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) [2023-08-24 01:30:22,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:30:22,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 255 [2023-08-24 01:30:22,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:30:25,715 INFO L124 PetriNetUnfolderBase]: 19506/36742 cut-off events. [2023-08-24 01:30:25,715 INFO L125 PetriNetUnfolderBase]: For 101031/103969 co-relation queries the response was YES. [2023-08-24 01:30:25,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136082 conditions, 36742 events. 19506/36742 cut-off events. For 101031/103969 co-relation queries the response was YES. Maximal size of possible extension queue 1220. Compared 340144 event pairs, 11669 based on Foata normal form. 1072/36033 useless extension candidates. Maximal degree in co-relation 135830. Up to 26327 conditions per place. [2023-08-24 01:30:25,993 INFO L140 encePairwiseOnDemand]: 251/255 looper letters, 140 selfloop transitions, 2 changer transitions 0/268 dead transitions. [2023-08-24 01:30:25,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 268 transitions, 2330 flow [2023-08-24 01:30:25,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 01:30:25,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 01:30:25,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-08-24 01:30:25,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5594771241830065 [2023-08-24 01:30:25,995 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-08-24 01:30:25,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-08-24 01:30:25,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:30:25,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-08-24 01:30:25,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2023-08-24 01:30:25,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2023-08-24 01:30:25,997 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2023-08-24 01:30:25,997 INFO L175 Difference]: Start difference. First operand has 147 places, 235 transitions, 1819 flow. Second operand 3 states and 428 transitions. [2023-08-24 01:30:25,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 268 transitions, 2330 flow [2023-08-24 01:30:27,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 268 transitions, 2279 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-08-24 01:30:27,182 INFO L231 Difference]: Finished difference. Result has 142 places, 226 transitions, 1721 flow [2023-08-24 01:30:27,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1721, PETRI_PLACES=142, PETRI_TRANSITIONS=226} [2023-08-24 01:30:27,183 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 83 predicate places. [2023-08-24 01:30:27,183 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 226 transitions, 1721 flow [2023-08-24 01:30:27,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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) [2023-08-24 01:30:27,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:30:27,184 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:30:27,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 01:30:27,184 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:30:27,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:30:27,184 INFO L85 PathProgramCache]: Analyzing trace with hash -897394273, now seen corresponding path program 10 times [2023-08-24 01:30:27,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:30:27,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156401720] [2023-08-24 01:30:27,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:30:27,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:30:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:30:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:30:27,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:30:27,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156401720] [2023-08-24 01:30:27,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156401720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:30:27,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:30:27,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 01:30:27,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584136509] [2023-08-24 01:30:27,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:30:27,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 01:30:27,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:30:27,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 01:30:27,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-24 01:30:27,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-08-24 01:30:27,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 226 transitions, 1721 flow. Second operand has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 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) [2023-08-24 01:30:27,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:30:27,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-08-24 01:30:27,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:30:31,789 INFO L124 PetriNetUnfolderBase]: 23118/41665 cut-off events. [2023-08-24 01:30:31,789 INFO L125 PetriNetUnfolderBase]: For 101937/104570 co-relation queries the response was YES. [2023-08-24 01:30:32,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150460 conditions, 41665 events. 23118/41665 cut-off events. For 101937/104570 co-relation queries the response was YES. Maximal size of possible extension queue 1236. Compared 369564 event pairs, 8420 based on Foata normal form. 258/41146 useless extension candidates. Maximal degree in co-relation 145509. Up to 25051 conditions per place. [2023-08-24 01:30:32,269 INFO L140 encePairwiseOnDemand]: 243/255 looper letters, 280 selfloop transitions, 82 changer transitions 1/433 dead transitions. [2023-08-24 01:30:32,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 433 transitions, 3746 flow [2023-08-24 01:30:32,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 01:30:32,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 01:30:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1196 transitions. [2023-08-24 01:30:32,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5211328976034858 [2023-08-24 01:30:32,271 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1196 transitions. [2023-08-24 01:30:32,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1196 transitions. [2023-08-24 01:30:32,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:30:32,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1196 transitions. [2023-08-24 01:30:32,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.88888888888889) internal successors, (1196), 9 states have internal predecessors, (1196), 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) [2023-08-24 01:30:32,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 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) [2023-08-24 01:30:32,276 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 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) [2023-08-24 01:30:32,276 INFO L175 Difference]: Start difference. First operand has 142 places, 226 transitions, 1721 flow. Second operand 9 states and 1196 transitions. [2023-08-24 01:30:32,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 433 transitions, 3746 flow [2023-08-24 01:30:33,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 433 transitions, 3742 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 01:30:33,538 INFO L231 Difference]: Finished difference. Result has 155 places, 289 transitions, 2631 flow [2023-08-24 01:30:33,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1717, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2631, PETRI_PLACES=155, PETRI_TRANSITIONS=289} [2023-08-24 01:30:33,538 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 96 predicate places. [2023-08-24 01:30:33,538 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 289 transitions, 2631 flow [2023-08-24 01:30:33,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 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) [2023-08-24 01:30:33,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:30:33,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:30:33,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 01:30:33,539 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:30:33,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:30:33,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1170691909, now seen corresponding path program 11 times [2023-08-24 01:30:33,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:30:33,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935264178] [2023-08-24 01:30:33,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:30:33,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:30:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:30:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:30:34,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:30:34,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935264178] [2023-08-24 01:30:34,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935264178] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:30:34,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:30:34,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 01:30:34,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377597213] [2023-08-24 01:30:34,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:30:34,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 01:30:34,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:30:34,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 01:30:34,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 01:30:34,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-08-24 01:30:34,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 289 transitions, 2631 flow. Second operand has 6 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 states have internal predecessors, (727), 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) [2023-08-24 01:30:34,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:30:34,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-08-24 01:30:34,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:30:39,250 INFO L124 PetriNetUnfolderBase]: 24719/44865 cut-off events. [2023-08-24 01:30:39,250 INFO L125 PetriNetUnfolderBase]: For 176909/180552 co-relation queries the response was YES. [2023-08-24 01:30:39,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178002 conditions, 44865 events. 24719/44865 cut-off events. For 176909/180552 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 407220 event pairs, 9391 based on Foata normal form. 714/44657 useless extension candidates. Maximal degree in co-relation 171762. Up to 33798 conditions per place. [2023-08-24 01:30:39,640 INFO L140 encePairwiseOnDemand]: 245/255 looper letters, 291 selfloop transitions, 60 changer transitions 4/425 dead transitions. [2023-08-24 01:30:39,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 425 transitions, 4446 flow [2023-08-24 01:30:39,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 01:30:39,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 01:30:39,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 802 transitions. [2023-08-24 01:30:39,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241830065359477 [2023-08-24 01:30:39,642 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 802 transitions. [2023-08-24 01:30:39,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 802 transitions. [2023-08-24 01:30:39,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:30:39,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 802 transitions. [2023-08-24 01:30:39,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.66666666666666) internal successors, (802), 6 states have internal predecessors, (802), 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) [2023-08-24 01:30:39,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 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) [2023-08-24 01:30:39,645 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 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) [2023-08-24 01:30:39,645 INFO L175 Difference]: Start difference. First operand has 155 places, 289 transitions, 2631 flow. Second operand 6 states and 802 transitions. [2023-08-24 01:30:39,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 425 transitions, 4446 flow [2023-08-24 01:30:41,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 425 transitions, 4312 flow, removed 67 selfloop flow, removed 0 redundant places. [2023-08-24 01:30:41,631 INFO L231 Difference]: Finished difference. Result has 164 places, 336 transitions, 3287 flow [2023-08-24 01:30:41,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2529, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3287, PETRI_PLACES=164, PETRI_TRANSITIONS=336} [2023-08-24 01:30:41,632 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 105 predicate places. [2023-08-24 01:30:41,632 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 336 transitions, 3287 flow [2023-08-24 01:30:41,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 states have internal predecessors, (727), 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) [2023-08-24 01:30:41,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:30:41,632 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:30:41,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 01:30:41,632 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:30:41,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:30:41,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1768502439, now seen corresponding path program 12 times [2023-08-24 01:30:41,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:30:41,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49218281] [2023-08-24 01:30:41,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:30:41,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:30:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:30:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:30:41,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:30:41,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49218281] [2023-08-24 01:30:41,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49218281] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:30:41,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:30:41,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 01:30:41,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545424605] [2023-08-24 01:30:41,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:30:41,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 01:30:41,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:30:41,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 01:30:41,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-24 01:30:41,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-08-24 01:30:41,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 336 transitions, 3287 flow. Second operand has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 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) [2023-08-24 01:30:41,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:30:41,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-08-24 01:30:41,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:30:49,401 INFO L124 PetriNetUnfolderBase]: 39423/62585 cut-off events. [2023-08-24 01:30:49,401 INFO L125 PetriNetUnfolderBase]: For 262152/265297 co-relation queries the response was YES. [2023-08-24 01:30:49,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260106 conditions, 62585 events. 39423/62585 cut-off events. For 262152/265297 co-relation queries the response was YES. Maximal size of possible extension queue 1558. Compared 490972 event pairs, 14212 based on Foata normal form. 1628/63291 useless extension candidates. Maximal degree in co-relation 249717. Up to 18840 conditions per place. [2023-08-24 01:30:50,037 INFO L140 encePairwiseOnDemand]: 247/255 looper letters, 577 selfloop transitions, 37 changer transitions 79/781 dead transitions. [2023-08-24 01:30:50,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 781 transitions, 8839 flow [2023-08-24 01:30:50,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 01:30:50,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 01:30:50,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1459 transitions. [2023-08-24 01:30:50,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201426024955437 [2023-08-24 01:30:50,040 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1459 transitions. [2023-08-24 01:30:50,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1459 transitions. [2023-08-24 01:30:50,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:30:50,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1459 transitions. [2023-08-24 01:30:50,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 132.63636363636363) internal successors, (1459), 11 states have internal predecessors, (1459), 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) [2023-08-24 01:30:50,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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) [2023-08-24 01:30:50,045 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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) [2023-08-24 01:30:50,045 INFO L175 Difference]: Start difference. First operand has 164 places, 336 transitions, 3287 flow. Second operand 11 states and 1459 transitions. [2023-08-24 01:30:50,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 781 transitions, 8839 flow [2023-08-24 01:30:54,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 781 transitions, 8757 flow, removed 41 selfloop flow, removed 0 redundant places. [2023-08-24 01:30:54,274 INFO L231 Difference]: Finished difference. Result has 178 places, 339 transitions, 3371 flow [2023-08-24 01:30:54,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=3233, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3371, PETRI_PLACES=178, PETRI_TRANSITIONS=339} [2023-08-24 01:30:54,275 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 119 predicate places. [2023-08-24 01:30:54,275 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 339 transitions, 3371 flow [2023-08-24 01:30:54,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 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) [2023-08-24 01:30:54,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:30:54,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:30:54,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 01:30:54,275 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:30:54,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:30:54,276 INFO L85 PathProgramCache]: Analyzing trace with hash 619820233, now seen corresponding path program 13 times [2023-08-24 01:30:54,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:30:54,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979917398] [2023-08-24 01:30:54,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:30:54,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:30:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:30:54,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:30:54,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:30:54,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979917398] [2023-08-24 01:30:54,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979917398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:30:54,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:30:54,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-24 01:30:54,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752241844] [2023-08-24 01:30:54,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:30:54,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 01:30:54,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:30:54,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 01:30:54,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-24 01:30:54,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-08-24 01:30:54,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 339 transitions, 3371 flow. Second operand has 11 states, 11 states have (on average 118.36363636363636) internal successors, (1302), 11 states have internal predecessors, (1302), 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) [2023-08-24 01:30:54,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:30:54,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-08-24 01:30:54,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:31:00,010 INFO L124 PetriNetUnfolderBase]: 26188/47572 cut-off events. [2023-08-24 01:31:00,010 INFO L125 PetriNetUnfolderBase]: For 214884/218406 co-relation queries the response was YES. [2023-08-24 01:31:00,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197724 conditions, 47572 events. 26188/47572 cut-off events. For 214884/218406 co-relation queries the response was YES. Maximal size of possible extension queue 1443. Compared 435992 event pairs, 10118 based on Foata normal form. 469/47058 useless extension candidates. Maximal degree in co-relation 197457. Up to 36858 conditions per place. [2023-08-24 01:31:00,749 INFO L140 encePairwiseOnDemand]: 244/255 looper letters, 326 selfloop transitions, 64 changer transitions 21/485 dead transitions. [2023-08-24 01:31:00,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 485 transitions, 5250 flow [2023-08-24 01:31:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 01:31:00,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 01:31:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1299 transitions. [2023-08-24 01:31:00,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094117647058823 [2023-08-24 01:31:00,750 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1299 transitions. [2023-08-24 01:31:00,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1299 transitions. [2023-08-24 01:31:00,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:31:00,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1299 transitions. [2023-08-24 01:31:00,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 129.9) internal successors, (1299), 10 states have internal predecessors, (1299), 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) [2023-08-24 01:31:00,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 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) [2023-08-24 01:31:00,754 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 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) [2023-08-24 01:31:00,754 INFO L175 Difference]: Start difference. First operand has 178 places, 339 transitions, 3371 flow. Second operand 10 states and 1299 transitions. [2023-08-24 01:31:00,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 485 transitions, 5250 flow [2023-08-24 01:31:04,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 485 transitions, 5206 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-24 01:31:04,500 INFO L231 Difference]: Finished difference. Result has 188 places, 373 transitions, 3940 flow [2023-08-24 01:31:04,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3940, PETRI_PLACES=188, PETRI_TRANSITIONS=373} [2023-08-24 01:31:04,500 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 129 predicate places. [2023-08-24 01:31:04,500 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 373 transitions, 3940 flow [2023-08-24 01:31:04,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 118.36363636363636) internal successors, (1302), 11 states have internal predecessors, (1302), 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) [2023-08-24 01:31:04,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:31:04,501 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:31:04,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 01:31:04,501 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:31:04,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:31:04,501 INFO L85 PathProgramCache]: Analyzing trace with hash -320011493, now seen corresponding path program 14 times [2023-08-24 01:31:04,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:31:04,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70696868] [2023-08-24 01:31:04,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:31:04,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:31:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:31:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:31:04,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:31:04,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70696868] [2023-08-24 01:31:04,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70696868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:31:04,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:31:04,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-24 01:31:04,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758139350] [2023-08-24 01:31:04,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:31:04,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 01:31:04,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:31:04,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 01:31:04,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-24 01:31:04,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-08-24 01:31:04,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 373 transitions, 3940 flow. Second operand has 11 states, 11 states have (on average 118.36363636363636) internal successors, (1302), 11 states have internal predecessors, (1302), 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) [2023-08-24 01:31:04,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:31:04,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-08-24 01:31:04,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:31:18,543 INFO L124 PetriNetUnfolderBase]: 49622/91301 cut-off events. [2023-08-24 01:31:18,543 INFO L125 PetriNetUnfolderBase]: For 479383/486124 co-relation queries the response was YES. [2023-08-24 01:31:19,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394699 conditions, 91301 events. 49622/91301 cut-off events. For 479383/486124 co-relation queries the response was YES. Maximal size of possible extension queue 3294. Compared 936208 event pairs, 13180 based on Foata normal form. 2193/91784 useless extension candidates. Maximal degree in co-relation 385877. Up to 35415 conditions per place. [2023-08-24 01:31:19,874 INFO L140 encePairwiseOnDemand]: 238/255 looper letters, 467 selfloop transitions, 257 changer transitions 6/804 dead transitions. [2023-08-24 01:31:19,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 804 transitions, 9114 flow [2023-08-24 01:31:19,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 01:31:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 01:31:19,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1865 transitions. [2023-08-24 01:31:19,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224089635854342 [2023-08-24 01:31:19,876 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1865 transitions. [2023-08-24 01:31:19,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1865 transitions. [2023-08-24 01:31:19,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:31:19,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1865 transitions. [2023-08-24 01:31:19,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 133.21428571428572) internal successors, (1865), 14 states have internal predecessors, (1865), 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) [2023-08-24 01:31:19,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 255.0) internal successors, (3825), 15 states have internal predecessors, (3825), 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) [2023-08-24 01:31:19,881 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 255.0) internal successors, (3825), 15 states have internal predecessors, (3825), 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) [2023-08-24 01:31:19,881 INFO L175 Difference]: Start difference. First operand has 188 places, 373 transitions, 3940 flow. Second operand 14 states and 1865 transitions. [2023-08-24 01:31:19,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 804 transitions, 9114 flow [2023-08-24 01:31:30,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 804 transitions, 9018 flow, removed 48 selfloop flow, removed 1 redundant places. [2023-08-24 01:31:30,885 INFO L231 Difference]: Finished difference. Result has 211 places, 571 transitions, 7259 flow [2023-08-24 01:31:30,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=3864, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7259, PETRI_PLACES=211, PETRI_TRANSITIONS=571} [2023-08-24 01:31:30,885 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 152 predicate places. [2023-08-24 01:31:30,886 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 571 transitions, 7259 flow [2023-08-24 01:31:30,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 118.36363636363636) internal successors, (1302), 11 states have internal predecessors, (1302), 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) [2023-08-24 01:31:30,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:31:30,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:31:30,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-24 01:31:30,886 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:31:30,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:31:30,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1935659655, now seen corresponding path program 15 times [2023-08-24 01:31:30,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:31:30,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098628096] [2023-08-24 01:31:30,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:31:30,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:31:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:31:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:31:31,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:31:31,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098628096] [2023-08-24 01:31:31,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098628096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:31:31,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:31:31,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 01:31:31,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130321882] [2023-08-24 01:31:31,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:31:31,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 01:31:31,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:31:31,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 01:31:31,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-24 01:31:31,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-08-24 01:31:31,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 571 transitions, 7259 flow. Second operand has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 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) [2023-08-24 01:31:31,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:31:31,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-08-24 01:31:31,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:31:45,018 INFO L124 PetriNetUnfolderBase]: 48717/91182 cut-off events. [2023-08-24 01:31:45,018 INFO L125 PetriNetUnfolderBase]: For 784765/795964 co-relation queries the response was YES. [2023-08-24 01:31:46,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450512 conditions, 91182 events. 48717/91182 cut-off events. For 784765/795964 co-relation queries the response was YES. Maximal size of possible extension queue 3298. Compared 951691 event pairs, 19006 based on Foata normal form. 2279/91681 useless extension candidates. Maximal degree in co-relation 440777. Up to 66671 conditions per place. [2023-08-24 01:31:46,420 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 504 selfloop transitions, 80 changer transitions 7/665 dead transitions. [2023-08-24 01:31:46,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 665 transitions, 9412 flow [2023-08-24 01:31:46,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 01:31:46,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 01:31:46,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1034 transitions. [2023-08-24 01:31:46,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068627450980392 [2023-08-24 01:31:46,422 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1034 transitions. [2023-08-24 01:31:46,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1034 transitions. [2023-08-24 01:31:46,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:31:46,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1034 transitions. [2023-08-24 01:31:46,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.25) internal successors, (1034), 8 states have internal predecessors, (1034), 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) [2023-08-24 01:31:46,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 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) [2023-08-24 01:31:46,424 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 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) [2023-08-24 01:31:46,424 INFO L175 Difference]: Start difference. First operand has 211 places, 571 transitions, 7259 flow. Second operand 8 states and 1034 transitions. [2023-08-24 01:31:46,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 665 transitions, 9412 flow [2023-08-24 01:32:04,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 665 transitions, 9053 flow, removed 175 selfloop flow, removed 1 redundant places. [2023-08-24 01:32:04,110 INFO L231 Difference]: Finished difference. Result has 221 places, 578 transitions, 7410 flow [2023-08-24 01:32:04,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6676, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7410, PETRI_PLACES=221, PETRI_TRANSITIONS=578} [2023-08-24 01:32:04,111 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 162 predicate places. [2023-08-24 01:32:04,111 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 578 transitions, 7410 flow [2023-08-24 01:32:04,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 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) [2023-08-24 01:32:04,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:32:04,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:32:04,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-24 01:32:04,112 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:32:04,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:32:04,112 INFO L85 PathProgramCache]: Analyzing trace with hash -846901715, now seen corresponding path program 16 times [2023-08-24 01:32:04,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:32:04,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331762328] [2023-08-24 01:32:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:32:04,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:32:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:32:04,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:32:04,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:32:04,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331762328] [2023-08-24 01:32:04,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331762328] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:32:04,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:32:04,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-24 01:32:04,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294157090] [2023-08-24 01:32:04,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:32:04,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:32:04,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:32:04,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:32:04,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-24 01:32:04,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-08-24 01:32:04,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 578 transitions, 7410 flow. Second operand has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 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) [2023-08-24 01:32:04,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:32:04,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-08-24 01:32:04,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:32:19,809 INFO L124 PetriNetUnfolderBase]: 49496/92810 cut-off events. [2023-08-24 01:32:19,809 INFO L125 PetriNetUnfolderBase]: For 800378/812002 co-relation queries the response was YES. [2023-08-24 01:32:21,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459104 conditions, 92810 events. 49496/92810 cut-off events. For 800378/812002 co-relation queries the response was YES. Maximal size of possible extension queue 3338. Compared 972812 event pairs, 19469 based on Foata normal form. 1751/92809 useless extension candidates. Maximal degree in co-relation 449205. Up to 70408 conditions per place. [2023-08-24 01:32:21,335 INFO L140 encePairwiseOnDemand]: 245/255 looper letters, 527 selfloop transitions, 48 changer transitions 30/679 dead transitions. [2023-08-24 01:32:21,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 679 transitions, 9376 flow [2023-08-24 01:32:21,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 01:32:21,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 01:32:21,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1173 transitions. [2023-08-24 01:32:21,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2023-08-24 01:32:21,337 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1173 transitions. [2023-08-24 01:32:21,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1173 transitions. [2023-08-24 01:32:21,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:32:21,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1173 transitions. [2023-08-24 01:32:21,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 130.33333333333334) internal successors, (1173), 9 states have internal predecessors, (1173), 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) [2023-08-24 01:32:21,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 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) [2023-08-24 01:32:21,340 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 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) [2023-08-24 01:32:21,340 INFO L175 Difference]: Start difference. First operand has 221 places, 578 transitions, 7410 flow. Second operand 9 states and 1173 transitions. [2023-08-24 01:32:21,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 679 transitions, 9376 flow [2023-08-24 01:32:38,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 679 transitions, 9214 flow, removed 61 selfloop flow, removed 2 redundant places. [2023-08-24 01:32:38,721 INFO L231 Difference]: Finished difference. Result has 231 places, 579 transitions, 7384 flow [2023-08-24 01:32:38,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=7256, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7384, PETRI_PLACES=231, PETRI_TRANSITIONS=579} [2023-08-24 01:32:38,722 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 172 predicate places. [2023-08-24 01:32:38,722 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 579 transitions, 7384 flow [2023-08-24 01:32:38,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 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) [2023-08-24 01:32:38,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:32:38,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:32:38,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-24 01:32:38,722 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:32:38,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:32:38,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1172605781, now seen corresponding path program 17 times [2023-08-24 01:32:38,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:32:38,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849790158] [2023-08-24 01:32:38,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:32:38,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:32:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:32:39,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:32:39,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:32:39,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849790158] [2023-08-24 01:32:39,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849790158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:32:39,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:32:39,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-24 01:32:39,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253261645] [2023-08-24 01:32:39,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:32:39,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 01:32:39,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:32:39,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 01:32:39,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-08-24 01:32:39,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-08-24 01:32:39,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 579 transitions, 7384 flow. Second operand has 12 states, 12 states have (on average 118.08333333333333) internal successors, (1417), 12 states have internal predecessors, (1417), 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) [2023-08-24 01:32:39,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:32:39,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-08-24 01:32:39,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:32:54,563 INFO L124 PetriNetUnfolderBase]: 50390/94684 cut-off events. [2023-08-24 01:32:54,564 INFO L125 PetriNetUnfolderBase]: For 851259/864943 co-relation queries the response was YES. [2023-08-24 01:32:55,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473449 conditions, 94684 events. 50390/94684 cut-off events. For 851259/864943 co-relation queries the response was YES. Maximal size of possible extension queue 3392. Compared 995842 event pairs, 20370 based on Foata normal form. 1959/94912 useless extension candidates. Maximal degree in co-relation 462811. Up to 72975 conditions per place. [2023-08-24 01:32:56,405 INFO L140 encePairwiseOnDemand]: 243/255 looper letters, 559 selfloop transitions, 66 changer transitions 44/743 dead transitions. [2023-08-24 01:32:56,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 743 transitions, 10325 flow [2023-08-24 01:32:56,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 01:32:56,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 01:32:56,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1539 transitions. [2023-08-24 01:32:56,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029411764705882 [2023-08-24 01:32:56,407 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1539 transitions. [2023-08-24 01:32:56,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1539 transitions. [2023-08-24 01:32:56,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:32:56,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1539 transitions. [2023-08-24 01:32:56,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 128.25) internal successors, (1539), 12 states have internal predecessors, (1539), 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) [2023-08-24 01:32:56,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 255.0) internal successors, (3315), 13 states have internal predecessors, (3315), 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) [2023-08-24 01:32:56,411 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 255.0) internal successors, (3315), 13 states have internal predecessors, (3315), 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) [2023-08-24 01:32:56,411 INFO L175 Difference]: Start difference. First operand has 231 places, 579 transitions, 7384 flow. Second operand 12 states and 1539 transitions. [2023-08-24 01:32:56,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 743 transitions, 10325 flow [2023-08-24 01:33:13,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 743 transitions, 10170 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-08-24 01:33:13,529 INFO L231 Difference]: Finished difference. Result has 244 places, 627 transitions, 8314 flow [2023-08-24 01:33:13,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=7284, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8314, PETRI_PLACES=244, PETRI_TRANSITIONS=627} [2023-08-24 01:33:13,530 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 185 predicate places. [2023-08-24 01:33:13,530 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 627 transitions, 8314 flow [2023-08-24 01:33:13,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 118.08333333333333) internal successors, (1417), 12 states have internal predecessors, (1417), 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) [2023-08-24 01:33:13,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:33:13,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:33:13,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-24 01:33:13,531 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:33:13,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:33:13,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1393601047, now seen corresponding path program 18 times [2023-08-24 01:33:13,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:33:13,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634298517] [2023-08-24 01:33:13,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:33:13,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:33:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:33:13,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:33:13,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:33:13,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634298517] [2023-08-24 01:33:13,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634298517] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:33:13,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:33:13,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-24 01:33:13,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086006334] [2023-08-24 01:33:13,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:33:13,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:33:13,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:33:13,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:33:13,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-24 01:33:13,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-08-24 01:33:13,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 627 transitions, 8314 flow. Second operand has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 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) [2023-08-24 01:33:13,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:33:13,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-08-24 01:33:13,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:33:29,817 INFO L124 PetriNetUnfolderBase]: 50302/94297 cut-off events. [2023-08-24 01:33:29,817 INFO L125 PetriNetUnfolderBase]: For 895581/907779 co-relation queries the response was YES. [2023-08-24 01:33:31,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481436 conditions, 94297 events. 50302/94297 cut-off events. For 895581/907779 co-relation queries the response was YES. Maximal size of possible extension queue 3397. Compared 990279 event pairs, 20118 based on Foata normal form. 1805/94262 useless extension candidates. Maximal degree in co-relation 477989. Up to 73677 conditions per place. [2023-08-24 01:33:31,774 INFO L140 encePairwiseOnDemand]: 245/255 looper letters, 530 selfloop transitions, 63 changer transitions 42/709 dead transitions. [2023-08-24 01:33:31,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 709 transitions, 10181 flow [2023-08-24 01:33:31,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 01:33:31,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 01:33:31,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1158 transitions. [2023-08-24 01:33:31,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045751633986928 [2023-08-24 01:33:31,783 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1158 transitions. [2023-08-24 01:33:31,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1158 transitions. [2023-08-24 01:33:31,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:33:31,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1158 transitions. [2023-08-24 01:33:31,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.66666666666666) internal successors, (1158), 9 states have internal predecessors, (1158), 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) [2023-08-24 01:33:31,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 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) [2023-08-24 01:33:31,785 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 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) [2023-08-24 01:33:31,786 INFO L175 Difference]: Start difference. First operand has 244 places, 627 transitions, 8314 flow. Second operand 9 states and 1158 transitions. [2023-08-24 01:33:31,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 709 transitions, 10181 flow [2023-08-24 01:33:50,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 709 transitions, 10079 flow, removed 33 selfloop flow, removed 4 redundant places. [2023-08-24 01:33:50,608 INFO L231 Difference]: Finished difference. Result has 249 places, 624 transitions, 8345 flow [2023-08-24 01:33:50,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=8232, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8345, PETRI_PLACES=249, PETRI_TRANSITIONS=624} [2023-08-24 01:33:50,609 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 190 predicate places. [2023-08-24 01:33:50,609 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 624 transitions, 8345 flow [2023-08-24 01:33:50,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 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) [2023-08-24 01:33:50,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:33:50,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:33:50,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-24 01:33:50,609 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:33:50,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:33:50,610 INFO L85 PathProgramCache]: Analyzing trace with hash -760170911, now seen corresponding path program 19 times [2023-08-24 01:33:50,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:33:50,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371473608] [2023-08-24 01:33:50,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:33:50,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:33:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:33:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:33:50,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:33:50,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371473608] [2023-08-24 01:33:50,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371473608] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:33:50,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:33:50,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-24 01:33:50,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149467546] [2023-08-24 01:33:50,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:33:50,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:33:50,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:33:50,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:33:50,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-24 01:33:50,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-08-24 01:33:50,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 624 transitions, 8345 flow. Second operand has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 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) [2023-08-24 01:33:50,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:33:50,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-08-24 01:33:50,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:34:05,972 INFO L124 PetriNetUnfolderBase]: 46815/88012 cut-off events. [2023-08-24 01:34:05,972 INFO L125 PetriNetUnfolderBase]: For 838207/848334 co-relation queries the response was YES. [2023-08-24 01:34:07,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449032 conditions, 88012 events. 46815/88012 cut-off events. For 838207/848334 co-relation queries the response was YES. Maximal size of possible extension queue 3032. Compared 916885 event pairs, 19601 based on Foata normal form. 1719/87792 useless extension candidates. Maximal degree in co-relation 445620. Up to 65316 conditions per place. [2023-08-24 01:34:07,719 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 518 selfloop transitions, 120 changer transitions 8/720 dead transitions. [2023-08-24 01:34:07,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 720 transitions, 10620 flow [2023-08-24 01:34:07,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 01:34:07,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 01:34:07,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1035 transitions. [2023-08-24 01:34:07,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073529411764706 [2023-08-24 01:34:07,720 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1035 transitions. [2023-08-24 01:34:07,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1035 transitions. [2023-08-24 01:34:07,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:34:07,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1035 transitions. [2023-08-24 01:34:07,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.375) internal successors, (1035), 8 states have internal predecessors, (1035), 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) [2023-08-24 01:34:07,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 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) [2023-08-24 01:34:07,723 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 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) [2023-08-24 01:34:07,723 INFO L175 Difference]: Start difference. First operand has 249 places, 624 transitions, 8345 flow. Second operand 8 states and 1035 transitions. [2023-08-24 01:34:07,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 720 transitions, 10620 flow