/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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:07:46,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:07:46,297 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 [2023-08-27 02:07:46,301 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:07:46,301 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:07:46,330 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:07:46,331 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:07:46,331 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:07:46,332 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:07:46,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:07:46,336 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:07:46,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:07:46,336 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:07:46,337 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:07:46,337 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:07:46,338 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:07:46,338 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:07:46,338 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:07:46,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:07:46,338 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:07:46,339 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:07:46,339 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:07:46,340 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:07:46,340 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:07:46,340 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:07:46,341 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:07:46,341 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:07:46,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:07:46,341 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:07:46,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:07:46,342 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:07:46,343 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:07:46,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:07:46,343 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:07:46,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:07:46,343 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:07:46,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:07:46,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:07:46,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:07:46,665 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:07:46,666 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:07:46,667 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-08-27 02:07:47,909 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:07:48,151 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:07:48,152 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-08-27 02:07:48,161 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52f1bcef7/db4961936fce4fe2bbb70855cf3e0c41/FLAG4a8ae4657 [2023-08-27 02:07:48,175 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52f1bcef7/db4961936fce4fe2bbb70855cf3e0c41 [2023-08-27 02:07:48,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:07:48,181 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:07:48,184 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:07:48,184 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:07:48,186 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:07:48,188 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:07:48" (1/1) ... [2023-08-27 02:07:48,188 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f45ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:48, skipping insertion in model container [2023-08-27 02:07:48,189 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:07:48" (1/1) ... [2023-08-27 02:07:48,217 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:07:48,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:07:48,415 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:07:48,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:07:48,458 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 02:07:48,458 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 02:07:48,464 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:07:48,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:48 WrapperNode [2023-08-27 02:07:48,464 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:07:48,465 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:07:48,465 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:07:48,466 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:07:48,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:48" (1/1) ... [2023-08-27 02:07:48,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:48" (1/1) ... [2023-08-27 02:07:48,514 INFO L138 Inliner]: procedures = 23, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 194 [2023-08-27 02:07:48,515 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:07:48,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:07:48,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:07:48,516 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:07:48,523 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:48" (1/1) ... [2023-08-27 02:07:48,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:48" (1/1) ... [2023-08-27 02:07:48,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:48" (1/1) ... [2023-08-27 02:07:48,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:48" (1/1) ... [2023-08-27 02:07:48,538 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:48" (1/1) ... [2023-08-27 02:07:48,539 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:48" (1/1) ... [2023-08-27 02:07:48,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:48" (1/1) ... [2023-08-27 02:07:48,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:48" (1/1) ... [2023-08-27 02:07:48,543 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:07:48,544 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:07:48,544 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:07:48,544 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:07:48,556 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:48" (1/1) ... [2023-08-27 02:07:48,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:07:48,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:07:48,586 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) [2023-08-27 02:07:48,595 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 [2023-08-27 02:07:48,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:07:48,623 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 02:07:48,623 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 02:07:48,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 02:07:48,624 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 02:07:48,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 02:07:48,624 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 02:07:48,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 02:07:48,624 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 02:07:48,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:07:48,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:07:48,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:07:48,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 02:07:48,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 02:07:48,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:07:48,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:07:48,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 02:07:48,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:07:48,628 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 02:07:48,710 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:07:48,712 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:07:48,974 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:07:49,040 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:07:49,040 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 02:07:49,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:07:49 BoogieIcfgContainer [2023-08-27 02:07:49,042 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:07:49,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:07:49,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:07:49,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:07:49,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:07:48" (1/3) ... [2023-08-27 02:07:49,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b4c692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:07:49, skipping insertion in model container [2023-08-27 02:07:49,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:48" (2/3) ... [2023-08-27 02:07:49,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b4c692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:07:49, skipping insertion in model container [2023-08-27 02:07:49,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:07:49" (3/3) ... [2023-08-27 02:07:49,051 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2023-08-27 02:07:49,065 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:07:49,065 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-27 02:07:49,066 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:07:49,156 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 02:07:49,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 304 flow [2023-08-27 02:07:49,272 INFO L124 PetriNetUnfolderBase]: 2/132 cut-off events. [2023-08-27 02:07:49,272 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 02:07:49,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 132 events. 2/132 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-08-27 02:07:49,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 136 transitions, 304 flow [2023-08-27 02:07:49,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 119 transitions, 262 flow [2023-08-27 02:07:49,283 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:07:49,295 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 119 transitions, 262 flow [2023-08-27 02:07:49,299 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 119 transitions, 262 flow [2023-08-27 02:07:49,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 119 transitions, 262 flow [2023-08-27 02:07:49,376 INFO L124 PetriNetUnfolderBase]: 2/119 cut-off events. [2023-08-27 02:07:49,377 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 02:07:49,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 119 events. 2/119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-08-27 02:07:49,380 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-08-27 02:07:52,688 INFO L134 LiptonReduction]: Checked pairs total: 11417 [2023-08-27 02:07:52,689 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-27 02:07:52,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:07:52,705 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;@52c2b5b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:07:52,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-27 02:07:52,713 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:07:52,713 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2023-08-27 02:07:52,713 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 02:07:52,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:07:52,714 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] [2023-08-27 02:07:52,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-27 02:07:52,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:07:52,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1275873043, now seen corresponding path program 1 times [2023-08-27 02:07:52,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:07:52,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939822637] [2023-08-27 02:07:52,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:52,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:07:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:53,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:07:53,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939822637] [2023-08-27 02:07:53,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939822637] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:07:53,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:07:53,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:07:53,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754522645] [2023-08-27 02:07:53,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:07:53,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:07:53,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:07:53,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:07:53,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:07:53,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 222 [2023-08-27 02:07:53,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-08-27 02:07:53,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:07:53,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 222 [2023-08-27 02:07:53,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:07:53,731 INFO L124 PetriNetUnfolderBase]: 665/1133 cut-off events. [2023-08-27 02:07:53,731 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-08-27 02:07:53,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 1133 events. 665/1133 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6398 event pairs, 160 based on Foata normal form. 25/1121 useless extension candidates. Maximal degree in co-relation 2132. Up to 960 conditions per place. [2023-08-27 02:07:53,746 INFO L140 encePairwiseOnDemand]: 219/222 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-27 02:07:53,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 200 flow [2023-08-27 02:07:53,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:07:53,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:07:53,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2023-08-27 02:07:53,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5900900900900901 [2023-08-27 02:07:53,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2023-08-27 02:07:53,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2023-08-27 02:07:53,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:07:53,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2023-08-27 02:07:53,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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) [2023-08-27 02:07:53,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2023-08-27 02:07:53,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2023-08-27 02:07:53,782 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 106 flow. Second operand 3 states and 393 transitions. [2023-08-27 02:07:53,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 200 flow [2023-08-27 02:07:53,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 180 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 02:07:53,790 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 98 flow [2023-08-27 02:07:53,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-08-27 02:07:53,795 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-08-27 02:07:53,795 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 98 flow [2023-08-27 02:07:53,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-08-27 02:07:53,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:07:53,796 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] [2023-08-27 02:07:53,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:07:53,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-27 02:07:53,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:07:53,805 INFO L85 PathProgramCache]: Analyzing trace with hash -437399193, now seen corresponding path program 2 times [2023-08-27 02:07:53,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:07:53,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625825116] [2023-08-27 02:07:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:53,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:07:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:54,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:07:54,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625825116] [2023-08-27 02:07:54,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625825116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:07:54,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:07:54,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:07:54,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672315139] [2023-08-27 02:07:54,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:07:54,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:07:54,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:07:54,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:07:54,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:07:54,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 222 [2023-08-27 02:07:54,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-08-27 02:07:54,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:07:54,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 222 [2023-08-27 02:07:54,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:07:54,195 INFO L124 PetriNetUnfolderBase]: 581/1041 cut-off events. [2023-08-27 02:07:54,196 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2023-08-27 02:07:54,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2028 conditions, 1041 events. 581/1041 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5579 event pairs, 176 based on Foata normal form. 23/1043 useless extension candidates. Maximal degree in co-relation 2008. Up to 756 conditions per place. [2023-08-27 02:07:54,202 INFO L140 encePairwiseOnDemand]: 219/222 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-27 02:07:54,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 190 flow [2023-08-27 02:07:54,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:07:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:07:54,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2023-08-27 02:07:54,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5900900900900901 [2023-08-27 02:07:54,204 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2023-08-27 02:07:54,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2023-08-27 02:07:54,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:07:54,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2023-08-27 02:07:54,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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) [2023-08-27 02:07:54,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2023-08-27 02:07:54,207 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2023-08-27 02:07:54,207 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 98 flow. Second operand 3 states and 393 transitions. [2023-08-27 02:07:54,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 190 flow [2023-08-27 02:07:54,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:07:54,209 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 102 flow [2023-08-27 02:07:54,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-08-27 02:07:54,210 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-08-27 02:07:54,210 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 102 flow [2023-08-27 02:07:54,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-08-27 02:07:54,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:07:54,211 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] [2023-08-27 02:07:54,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 02:07:54,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-27 02:07:54,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:07:54,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1062859939, now seen corresponding path program 3 times [2023-08-27 02:07:54,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:07:54,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651669960] [2023-08-27 02:07:54,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:54,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:07:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:56,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:07:56,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651669960] [2023-08-27 02:07:56,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651669960] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:07:56,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:07:56,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-27 02:07:56,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053576434] [2023-08-27 02:07:56,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:07:56,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 02:07:56,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:07:56,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 02:07:56,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-08-27 02:07:56,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 222 [2023-08-27 02:07:56,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 102 flow. Second operand has 14 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-08-27 02:07:56,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:07:56,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 222 [2023-08-27 02:07:56,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:07:59,270 INFO L124 PetriNetUnfolderBase]: 11015/16375 cut-off events. [2023-08-27 02:07:59,270 INFO L125 PetriNetUnfolderBase]: For 1403/1403 co-relation queries the response was YES. [2023-08-27 02:07:59,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33716 conditions, 16375 events. 11015/16375 cut-off events. For 1403/1403 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 98331 event pairs, 1939 based on Foata normal form. 1/16366 useless extension candidates. Maximal degree in co-relation 10522. Up to 4048 conditions per place. [2023-08-27 02:07:59,363 INFO L140 encePairwiseOnDemand]: 208/222 looper letters, 225 selfloop transitions, 16 changer transitions 16/261 dead transitions. [2023-08-27 02:07:59,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 261 transitions, 1126 flow [2023-08-27 02:07:59,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 02:07:59,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 02:07:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1623 transitions. [2023-08-27 02:07:59,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4873873873873874 [2023-08-27 02:07:59,368 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1623 transitions. [2023-08-27 02:07:59,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1623 transitions. [2023-08-27 02:07:59,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:07:59,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1623 transitions. [2023-08-27 02:07:59,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 108.2) internal successors, (1623), 15 states have internal predecessors, (1623), 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) [2023-08-27 02:07:59,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 222.0) internal successors, (3552), 16 states have internal predecessors, (3552), 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) [2023-08-27 02:07:59,379 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 222.0) internal successors, (3552), 16 states have internal predecessors, (3552), 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) [2023-08-27 02:07:59,379 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 102 flow. Second operand 15 states and 1623 transitions. [2023-08-27 02:07:59,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 261 transitions, 1126 flow [2023-08-27 02:07:59,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 261 transitions, 1122 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:07:59,388 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 217 flow [2023-08-27 02:07:59,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=217, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2023-08-27 02:07:59,390 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2023-08-27 02:07:59,390 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 217 flow [2023-08-27 02:07:59,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-08-27 02:07:59,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:07:59,391 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] [2023-08-27 02:07:59,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 02:07:59,395 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-27 02:07:59,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:07:59,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1699748241, now seen corresponding path program 4 times [2023-08-27 02:07:59,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:07:59,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664400940] [2023-08-27 02:07:59,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:59,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:07:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:59,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:59,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:07:59,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664400940] [2023-08-27 02:07:59,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664400940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:07:59,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:07:59,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:07:59,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289885457] [2023-08-27 02:07:59,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:07:59,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:07:59,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:07:59,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:07:59,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:07:59,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 222 [2023-08-27 02:07:59,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-08-27 02:07:59,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:07:59,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 222 [2023-08-27 02:07:59,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:07:59,984 INFO L124 PetriNetUnfolderBase]: 1769/3048 cut-off events. [2023-08-27 02:07:59,984 INFO L125 PetriNetUnfolderBase]: For 3192/3249 co-relation queries the response was YES. [2023-08-27 02:07:59,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8611 conditions, 3048 events. 1769/3048 cut-off events. For 3192/3249 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 20371 event pairs, 567 based on Foata normal form. 42/2873 useless extension candidates. Maximal degree in co-relation 8578. Up to 2685 conditions per place. [2023-08-27 02:08:00,010 INFO L140 encePairwiseOnDemand]: 219/222 looper letters, 40 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-27 02:08:00,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 63 transitions, 316 flow [2023-08-27 02:08:00,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:08:00,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:08:00,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2023-08-27 02:08:00,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5930930930930931 [2023-08-27 02:08:00,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2023-08-27 02:08:00,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2023-08-27 02:08:00,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:08:00,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2023-08-27 02:08:00,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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) [2023-08-27 02:08:00,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2023-08-27 02:08:00,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2023-08-27 02:08:00,015 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 217 flow. Second operand 3 states and 395 transitions. [2023-08-27 02:08:00,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 63 transitions, 316 flow [2023-08-27 02:08:00,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 63 transitions, 306 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 02:08:00,042 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 197 flow [2023-08-27 02:08:00,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2023-08-27 02:08:00,043 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2023-08-27 02:08:00,043 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 197 flow [2023-08-27 02:08:00,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-08-27 02:08:00,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:08:00,044 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] [2023-08-27 02:08:00,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 02:08:00,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-27 02:08:00,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:08:00,044 INFO L85 PathProgramCache]: Analyzing trace with hash -288774345, now seen corresponding path program 5 times [2023-08-27 02:08:00,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:08:00,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6227713] [2023-08-27 02:08:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:08:00,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:08:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:08:00,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:08:00,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:08:00,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6227713] [2023-08-27 02:08:00,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6227713] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:08:00,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:08:00,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:08:00,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33153907] [2023-08-27 02:08:00,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:08:00,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:08:00,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:08:00,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:08:00,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:08:00,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 222 [2023-08-27 02:08:00,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-08-27 02:08:00,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:08:00,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 222 [2023-08-27 02:08:00,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:08:00,565 INFO L124 PetriNetUnfolderBase]: 1762/3140 cut-off events. [2023-08-27 02:08:00,565 INFO L125 PetriNetUnfolderBase]: For 2468/2749 co-relation queries the response was YES. [2023-08-27 02:08:00,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8417 conditions, 3140 events. 1762/3140 cut-off events. For 2468/2749 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 20542 event pairs, 530 based on Foata normal form. 90/3002 useless extension candidates. Maximal degree in co-relation 6301. Up to 2425 conditions per place. [2023-08-27 02:08:00,587 INFO L140 encePairwiseOnDemand]: 219/222 looper letters, 42 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-27 02:08:00,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 65 transitions, 330 flow [2023-08-27 02:08:00,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:08:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:08:00,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2023-08-27 02:08:00,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5930930930930931 [2023-08-27 02:08:00,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2023-08-27 02:08:00,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2023-08-27 02:08:00,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:08:00,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2023-08-27 02:08:00,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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) [2023-08-27 02:08:00,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2023-08-27 02:08:00,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2023-08-27 02:08:00,591 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 197 flow. Second operand 3 states and 395 transitions. [2023-08-27 02:08:00,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 65 transitions, 330 flow [2023-08-27 02:08:00,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 65 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:08:00,607 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 201 flow [2023-08-27 02:08:00,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-08-27 02:08:00,609 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2023-08-27 02:08:00,609 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 201 flow [2023-08-27 02:08:00,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-08-27 02:08:00,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:08:00,610 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] [2023-08-27 02:08:00,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 02:08:00,610 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-27 02:08:00,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:08:00,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1308912759, now seen corresponding path program 6 times [2023-08-27 02:08:00,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:08:00,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354206202] [2023-08-27 02:08:00,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:08:00,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:08:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:08:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:08:02,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:08:02,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354206202] [2023-08-27 02:08:02,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354206202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:08:02,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:08:02,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-27 02:08:02,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094890259] [2023-08-27 02:08:02,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:08:02,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 02:08:02,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:08:02,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 02:08:02,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-08-27 02:08:02,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 222 [2023-08-27 02:08:02,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 201 flow. Second operand has 14 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-08-27 02:08:02,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:08:02,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 222 [2023-08-27 02:08:02,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:08:05,162 INFO L124 PetriNetUnfolderBase]: 9161/13967 cut-off events. [2023-08-27 02:08:05,162 INFO L125 PetriNetUnfolderBase]: For 9796/9796 co-relation queries the response was YES. [2023-08-27 02:08:05,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39130 conditions, 13967 events. 9161/13967 cut-off events. For 9796/9796 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 82275 event pairs, 1659 based on Foata normal form. 1/13968 useless extension candidates. Maximal degree in co-relation 32795. Up to 3064 conditions per place. [2023-08-27 02:08:05,264 INFO L140 encePairwiseOnDemand]: 209/222 looper letters, 210 selfloop transitions, 18 changer transitions 16/248 dead transitions. [2023-08-27 02:08:05,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 248 transitions, 1319 flow [2023-08-27 02:08:05,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 02:08:05,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 02:08:05,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1508 transitions. [2023-08-27 02:08:05,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851994851994852 [2023-08-27 02:08:05,269 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1508 transitions. [2023-08-27 02:08:05,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1508 transitions. [2023-08-27 02:08:05,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:08:05,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1508 transitions. [2023-08-27 02:08:05,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.71428571428571) internal successors, (1508), 14 states have internal predecessors, (1508), 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) [2023-08-27 02:08:05,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 222.0) internal successors, (3330), 15 states have internal predecessors, (3330), 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) [2023-08-27 02:08:05,278 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 222.0) internal successors, (3330), 15 states have internal predecessors, (3330), 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) [2023-08-27 02:08:05,278 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 201 flow. Second operand 14 states and 1508 transitions. [2023-08-27 02:08:05,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 248 transitions, 1319 flow [2023-08-27 02:08:05,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 248 transitions, 1315 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:08:05,372 INFO L231 Difference]: Finished difference. Result has 91 places, 65 transitions, 359 flow [2023-08-27 02:08:05,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=359, PETRI_PLACES=91, PETRI_TRANSITIONS=65} [2023-08-27 02:08:05,373 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 37 predicate places. [2023-08-27 02:08:05,373 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 65 transitions, 359 flow [2023-08-27 02:08:05,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-08-27 02:08:05,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:08:05,374 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] [2023-08-27 02:08:05,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 02:08:05,375 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-27 02:08:05,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:08:05,375 INFO L85 PathProgramCache]: Analyzing trace with hash 973477795, now seen corresponding path program 7 times [2023-08-27 02:08:05,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:08:05,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309186278] [2023-08-27 02:08:05,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:08:05,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:08:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:08:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:08:06,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:08:06,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309186278] [2023-08-27 02:08:06,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309186278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:08:06,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:08:06,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-27 02:08:06,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347377078] [2023-08-27 02:08:06,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:08:06,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 02:08:06,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:08:06,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 02:08:06,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-08-27 02:08:06,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 222 [2023-08-27 02:08:06,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 65 transitions, 359 flow. Second operand has 14 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-08-27 02:08:06,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:08:06,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 222 [2023-08-27 02:08:06,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:08:11,164 INFO L124 PetriNetUnfolderBase]: 19856/30973 cut-off events. [2023-08-27 02:08:11,164 INFO L125 PetriNetUnfolderBase]: For 63306/63306 co-relation queries the response was YES. [2023-08-27 02:08:11,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106312 conditions, 30973 events. 19856/30973 cut-off events. For 63306/63306 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 217349 event pairs, 3765 based on Foata normal form. 1/30974 useless extension candidates. Maximal degree in co-relation 106032. Up to 7804 conditions per place. [2023-08-27 02:08:11,423 INFO L140 encePairwiseOnDemand]: 209/222 looper letters, 282 selfloop transitions, 38 changer transitions 9/333 dead transitions. [2023-08-27 02:08:11,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 333 transitions, 2428 flow [2023-08-27 02:08:11,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 02:08:11,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 02:08:11,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1505 transitions. [2023-08-27 02:08:11,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48423423423423423 [2023-08-27 02:08:11,428 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1505 transitions. [2023-08-27 02:08:11,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1505 transitions. [2023-08-27 02:08:11,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:08:11,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1505 transitions. [2023-08-27 02:08:11,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.5) internal successors, (1505), 14 states have internal predecessors, (1505), 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) [2023-08-27 02:08:11,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 222.0) internal successors, (3330), 15 states have internal predecessors, (3330), 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) [2023-08-27 02:08:11,437 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 222.0) internal successors, (3330), 15 states have internal predecessors, (3330), 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) [2023-08-27 02:08:11,437 INFO L175 Difference]: Start difference. First operand has 91 places, 65 transitions, 359 flow. Second operand 14 states and 1505 transitions. [2023-08-27 02:08:11,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 333 transitions, 2428 flow [2023-08-27 02:08:12,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 333 transitions, 2336 flow, removed 22 selfloop flow, removed 5 redundant places. [2023-08-27 02:08:12,319 INFO L231 Difference]: Finished difference. Result has 109 places, 95 transitions, 784 flow [2023-08-27 02:08:12,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=784, PETRI_PLACES=109, PETRI_TRANSITIONS=95} [2023-08-27 02:08:12,320 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2023-08-27 02:08:12,320 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 95 transitions, 784 flow [2023-08-27 02:08:12,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-08-27 02:08:12,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:08:12,321 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] [2023-08-27 02:08:12,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 02:08:12,322 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-27 02:08:12,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:08:12,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1282829233, now seen corresponding path program 8 times [2023-08-27 02:08:12,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:08:12,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955648633] [2023-08-27 02:08:12,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:08:12,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:08:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:08:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:08:13,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:08:13,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955648633] [2023-08-27 02:08:13,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955648633] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:08:13,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:08:13,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-27 02:08:13,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129954286] [2023-08-27 02:08:13,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:08:13,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 02:08:13,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:08:13,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 02:08:13,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-08-27 02:08:13,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 222 [2023-08-27 02:08:13,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 95 transitions, 784 flow. Second operand has 14 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-08-27 02:08:13,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:08:13,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 222 [2023-08-27 02:08:13,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:08:19,846 INFO L124 PetriNetUnfolderBase]: 29757/46877 cut-off events. [2023-08-27 02:08:19,846 INFO L125 PetriNetUnfolderBase]: For 181712/181712 co-relation queries the response was YES. [2023-08-27 02:08:20,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189166 conditions, 46877 events. 29757/46877 cut-off events. For 181712/181712 co-relation queries the response was YES. Maximal size of possible extension queue 1604. Compared 357349 event pairs, 6187 based on Foata normal form. 1/46878 useless extension candidates. Maximal degree in co-relation 188660. Up to 12800 conditions per place. [2023-08-27 02:08:20,362 INFO L140 encePairwiseOnDemand]: 209/222 looper letters, 331 selfloop transitions, 52 changer transitions 9/396 dead transitions. [2023-08-27 02:08:20,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 396 transitions, 3517 flow [2023-08-27 02:08:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 02:08:20,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 02:08:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1512 transitions. [2023-08-27 02:08:20,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-08-27 02:08:20,367 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1512 transitions. [2023-08-27 02:08:20,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1512 transitions. [2023-08-27 02:08:20,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:08:20,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1512 transitions. [2023-08-27 02:08:20,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.0) internal successors, (1512), 14 states have internal predecessors, (1512), 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) [2023-08-27 02:08:20,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 222.0) internal successors, (3330), 15 states have internal predecessors, (3330), 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) [2023-08-27 02:08:20,376 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 222.0) internal successors, (3330), 15 states have internal predecessors, (3330), 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) [2023-08-27 02:08:20,376 INFO L175 Difference]: Start difference. First operand has 109 places, 95 transitions, 784 flow. Second operand 14 states and 1512 transitions. [2023-08-27 02:08:20,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 396 transitions, 3517 flow [2023-08-27 02:08:22,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 396 transitions, 3467 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-08-27 02:08:22,723 INFO L231 Difference]: Finished difference. Result has 131 places, 130 transitions, 1401 flow [2023-08-27 02:08:22,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1401, PETRI_PLACES=131, PETRI_TRANSITIONS=130} [2023-08-27 02:08:22,724 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 77 predicate places. [2023-08-27 02:08:22,724 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 130 transitions, 1401 flow [2023-08-27 02:08:22,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-08-27 02:08:22,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:08:22,725 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] [2023-08-27 02:08:22,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 02:08:22,725 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-27 02:08:22,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:08:22,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1073719877, now seen corresponding path program 9 times [2023-08-27 02:08:22,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:08:22,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611429555] [2023-08-27 02:08:22,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:08:22,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:08:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:08:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:08:24,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:08:24,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611429555] [2023-08-27 02:08:24,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611429555] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:08:24,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:08:24,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-27 02:08:24,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488860993] [2023-08-27 02:08:24,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:08:24,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 02:08:24,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:08:24,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 02:08:24,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-08-27 02:08:24,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 222 [2023-08-27 02:08:24,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 130 transitions, 1401 flow. Second operand has 14 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-08-27 02:08:24,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:08:24,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 222 [2023-08-27 02:08:24,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:08:31,712 INFO L124 PetriNetUnfolderBase]: 37688/60335 cut-off events. [2023-08-27 02:08:31,713 INFO L125 PetriNetUnfolderBase]: For 390753/390753 co-relation queries the response was YES. [2023-08-27 02:08:32,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280336 conditions, 60335 events. 37688/60335 cut-off events. For 390753/390753 co-relation queries the response was YES. Maximal size of possible extension queue 2199. Compared 487849 event pairs, 9491 based on Foata normal form. 1/60336 useless extension candidates. Maximal degree in co-relation 279552. Up to 15976 conditions per place. [2023-08-27 02:08:32,488 INFO L140 encePairwiseOnDemand]: 209/222 looper letters, 353 selfloop transitions, 77 changer transitions 10/444 dead transitions. [2023-08-27 02:08:32,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 444 transitions, 4716 flow [2023-08-27 02:08:32,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 02:08:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 02:08:32,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1508 transitions. [2023-08-27 02:08:32,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851994851994852 [2023-08-27 02:08:32,493 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1508 transitions. [2023-08-27 02:08:32,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1508 transitions. [2023-08-27 02:08:32,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:08:32,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1508 transitions. [2023-08-27 02:08:32,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.71428571428571) internal successors, (1508), 14 states have internal predecessors, (1508), 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) [2023-08-27 02:08:32,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 222.0) internal successors, (3330), 15 states have internal predecessors, (3330), 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) [2023-08-27 02:08:32,502 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 222.0) internal successors, (3330), 15 states have internal predecessors, (3330), 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) [2023-08-27 02:08:32,502 INFO L175 Difference]: Start difference. First operand has 131 places, 130 transitions, 1401 flow. Second operand 14 states and 1508 transitions. [2023-08-27 02:08:32,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 444 transitions, 4716 flow [2023-08-27 02:08:36,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 444 transitions, 4676 flow, removed 20 selfloop flow, removed 1 redundant places. [2023-08-27 02:08:36,249 INFO L231 Difference]: Finished difference. Result has 154 places, 171 transitions, 2286 flow [2023-08-27 02:08:36,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2286, PETRI_PLACES=154, PETRI_TRANSITIONS=171} [2023-08-27 02:08:36,249 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 100 predicate places. [2023-08-27 02:08:36,250 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 171 transitions, 2286 flow [2023-08-27 02:08:36,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-08-27 02:08:36,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:08:36,250 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] [2023-08-27 02:08:36,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 02:08:36,250 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-27 02:08:36,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:08:36,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1214152429, now seen corresponding path program 10 times [2023-08-27 02:08:36,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:08:36,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126220184] [2023-08-27 02:08:36,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:08:36,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:08:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:08:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:08:37,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:08:37,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126220184] [2023-08-27 02:08:37,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126220184] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:08:37,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:08:37,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-27 02:08:37,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001255712] [2023-08-27 02:08:37,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:08:37,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 02:08:37,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:08:37,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 02:08:37,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-08-27 02:08:37,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 222 [2023-08-27 02:08:37,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 171 transitions, 2286 flow. Second operand has 14 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-08-27 02:08:37,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:08:37,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 222 [2023-08-27 02:08:37,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:08:51,007 INFO L124 PetriNetUnfolderBase]: 56985/94452 cut-off events. [2023-08-27 02:08:51,007 INFO L125 PetriNetUnfolderBase]: For 1039185/1039185 co-relation queries the response was YES. [2023-08-27 02:08:51,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509086 conditions, 94452 events. 56985/94452 cut-off events. For 1039185/1039185 co-relation queries the response was YES. Maximal size of possible extension queue 3709. Compared 864331 event pairs, 14845 based on Foata normal form. 1/94445 useless extension candidates. Maximal degree in co-relation 507294. Up to 26347 conditions per place. [2023-08-27 02:08:52,156 INFO L140 encePairwiseOnDemand]: 209/222 looper letters, 510 selfloop transitions, 88 changer transitions 10/612 dead transitions. [2023-08-27 02:08:52,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 612 transitions, 8908 flow [2023-08-27 02:08:52,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 02:08:52,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 02:08:52,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1506 transitions. [2023-08-27 02:08:52,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48455598455598453 [2023-08-27 02:08:52,161 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1506 transitions. [2023-08-27 02:08:52,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1506 transitions. [2023-08-27 02:08:52,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:08:52,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1506 transitions. [2023-08-27 02:08:52,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.57142857142857) internal successors, (1506), 14 states have internal predecessors, (1506), 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) [2023-08-27 02:08:52,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 222.0) internal successors, (3330), 15 states have internal predecessors, (3330), 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) [2023-08-27 02:08:52,170 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 222.0) internal successors, (3330), 15 states have internal predecessors, (3330), 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) [2023-08-27 02:08:52,170 INFO L175 Difference]: Start difference. First operand has 154 places, 171 transitions, 2286 flow. Second operand 14 states and 1506 transitions. [2023-08-27 02:08:52,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 612 transitions, 8908 flow [2023-08-27 02:09:06,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 612 transitions, 8674 flow, removed 108 selfloop flow, removed 2 redundant places. [2023-08-27 02:09:06,954 INFO L231 Difference]: Finished difference. Result has 176 places, 223 transitions, 3437 flow [2023-08-27 02:09:06,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3437, PETRI_PLACES=176, PETRI_TRANSITIONS=223} [2023-08-27 02:09:06,955 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 122 predicate places. [2023-08-27 02:09:06,955 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 223 transitions, 3437 flow [2023-08-27 02:09:06,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-08-27 02:09:06,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:06,956 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] [2023-08-27 02:09:06,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 02:09:06,956 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-27 02:09:06,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:06,956 INFO L85 PathProgramCache]: Analyzing trace with hash 444804075, now seen corresponding path program 11 times [2023-08-27 02:09:06,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:06,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216954951] [2023-08-27 02:09:06,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:06,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:08,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:09:08,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:08,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216954951] [2023-08-27 02:09:08,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216954951] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:08,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:08,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-27 02:09:08,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430153885] [2023-08-27 02:09:08,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:08,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 02:09:08,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:08,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 02:09:08,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-08-27 02:09:08,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 222 [2023-08-27 02:09:08,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 223 transitions, 3437 flow. Second operand has 14 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-08-27 02:09:08,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:08,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 222 [2023-08-27 02:09:08,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:27,614 INFO L124 PetriNetUnfolderBase]: 66991/113986 cut-off events. [2023-08-27 02:09:27,614 INFO L125 PetriNetUnfolderBase]: For 1634902/1634902 co-relation queries the response was YES. [2023-08-27 02:09:28,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669239 conditions, 113986 events. 66991/113986 cut-off events. For 1634902/1634902 co-relation queries the response was YES. Maximal size of possible extension queue 4717. Compared 1105364 event pairs, 21343 based on Foata normal form. 1/113987 useless extension candidates. Maximal degree in co-relation 666722. Up to 46417 conditions per place. [2023-08-27 02:09:29,474 INFO L140 encePairwiseOnDemand]: 209/222 looper letters, 467 selfloop transitions, 107 changer transitions 9/587 dead transitions. [2023-08-27 02:09:29,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 587 transitions, 8662 flow [2023-08-27 02:09:29,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 02:09:29,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 02:09:29,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1506 transitions. [2023-08-27 02:09:29,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48455598455598453 [2023-08-27 02:09:29,479 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1506 transitions. [2023-08-27 02:09:29,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1506 transitions. [2023-08-27 02:09:29,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:29,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1506 transitions. [2023-08-27 02:09:29,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.57142857142857) internal successors, (1506), 14 states have internal predecessors, (1506), 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) [2023-08-27 02:09:29,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 222.0) internal successors, (3330), 15 states have internal predecessors, (3330), 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) [2023-08-27 02:09:29,487 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 222.0) internal successors, (3330), 15 states have internal predecessors, (3330), 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) [2023-08-27 02:09:29,487 INFO L175 Difference]: Start difference. First operand has 176 places, 223 transitions, 3437 flow. Second operand 14 states and 1506 transitions. [2023-08-27 02:09:29,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 587 transitions, 8662 flow [2023-08-27 02:09:50,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 587 transitions, 8377 flow, removed 134 selfloop flow, removed 2 redundant places. [2023-08-27 02:09:50,202 INFO L231 Difference]: Finished difference. Result has 197 places, 291 transitions, 4965 flow [2023-08-27 02:09:50,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=3340, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4965, PETRI_PLACES=197, PETRI_TRANSITIONS=291} [2023-08-27 02:09:50,203 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 143 predicate places. [2023-08-27 02:09:50,203 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 291 transitions, 4965 flow [2023-08-27 02:09:50,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-08-27 02:09:50,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:50,204 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] [2023-08-27 02:09:50,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 02:09:50,213 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-27 02:09:50,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:50,213 INFO L85 PathProgramCache]: Analyzing trace with hash 411984913, now seen corresponding path program 12 times [2023-08-27 02:09:50,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:50,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981937106] [2023-08-27 02:09:50,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:50,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:09:51,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:51,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981937106] [2023-08-27 02:09:51,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981937106] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:51,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:51,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-27 02:09:51,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434472777] [2023-08-27 02:09:51,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:51,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 02:09:51,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:51,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 02:09:51,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-08-27 02:09:51,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 222 [2023-08-27 02:09:51,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 291 transitions, 4965 flow. Second operand has 14 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-08-27 02:09:51,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:51,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 222 [2023-08-27 02:09:51,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:10:17,760 INFO L124 PetriNetUnfolderBase]: 80311/142824 cut-off events. [2023-08-27 02:10:17,761 INFO L125 PetriNetUnfolderBase]: For 2511386/2511386 co-relation queries the response was YES. [2023-08-27 02:10:19,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885891 conditions, 142824 events. 80311/142824 cut-off events. For 2511386/2511386 co-relation queries the response was YES. Maximal size of possible extension queue 6305. Compared 1514364 event pairs, 22971 based on Foata normal form. 1/142825 useless extension candidates. Maximal degree in co-relation 881825. Up to 40089 conditions per place. [2023-08-27 02:10:20,117 INFO L140 encePairwiseOnDemand]: 209/222 looper letters, 664 selfloop transitions, 112 changer transitions 11/791 dead transitions. [2023-08-27 02:10:20,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 791 transitions, 13690 flow [2023-08-27 02:10:20,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 02:10:20,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 02:10:20,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1516 transitions. [2023-08-27 02:10:20,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4877734877734878 [2023-08-27 02:10:20,123 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1516 transitions. [2023-08-27 02:10:20,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1516 transitions. [2023-08-27 02:10:20,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:10:20,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1516 transitions. [2023-08-27 02:10:20,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.28571428571429) internal successors, (1516), 14 states have internal predecessors, (1516), 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) [2023-08-27 02:10:20,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 222.0) internal successors, (3330), 15 states have internal predecessors, (3330), 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) [2023-08-27 02:10:20,131 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 222.0) internal successors, (3330), 15 states have internal predecessors, (3330), 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) [2023-08-27 02:10:20,131 INFO L175 Difference]: Start difference. First operand has 197 places, 291 transitions, 4965 flow. Second operand 14 states and 1516 transitions. [2023-08-27 02:10:20,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 791 transitions, 13690 flow [2023-08-27 02:11:20,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 791 transitions, 13239 flow, removed 213 selfloop flow, removed 2 redundant places. [2023-08-27 02:11:20,344 INFO L231 Difference]: Finished difference. Result has 219 places, 370 transitions, 6677 flow [2023-08-27 02:11:20,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=4765, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6677, PETRI_PLACES=219, PETRI_TRANSITIONS=370} [2023-08-27 02:11:20,345 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 165 predicate places. [2023-08-27 02:11:20,345 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 370 transitions, 6677 flow [2023-08-27 02:11:20,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-08-27 02:11:20,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:11:20,346 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] [2023-08-27 02:11:20,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 02:11:20,346 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-27 02:11:20,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:11:20,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1417658221, now seen corresponding path program 13 times [2023-08-27 02:11:20,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:11:20,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986614093] [2023-08-27 02:11:20,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:11:20,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:11:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:11:21,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:11:21,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:11:21,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986614093] [2023-08-27 02:11:21,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986614093] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:11:21,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:11:21,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-27 02:11:21,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924965377] [2023-08-27 02:11:21,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:11:21,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 02:11:21,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:11:21,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 02:11:21,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-08-27 02:11:21,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 222 [2023-08-27 02:11:21,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 370 transitions, 6677 flow. Second operand has 14 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-08-27 02:11:21,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:11:21,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 222 [2023-08-27 02:11:21,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand