/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 --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 08:27:21,365 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 08:27:21,438 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 08:27:21,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 08:27:21,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 08:27:21,481 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 08:27:21,481 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 08:27:21,481 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 08:27:21,482 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 08:27:21,485 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 08:27:21,486 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 08:27:21,486 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 08:27:21,486 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 08:27:21,487 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 08:27:21,487 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 08:27:21,488 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 08:27:21,488 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 08:27:21,488 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 08:27:21,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 08:27:21,488 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 08:27:21,489 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 08:27:21,489 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 08:27:21,490 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 08:27:21,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 08:27:21,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 08:27:21,490 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 08:27:21,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 08:27:21,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 08:27:21,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 08:27:21,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 08:27:21,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 08:27:21,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 08:27:21,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 08:27:21,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 08:27:21,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 08:27:21,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 08:27:21,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 08:27:21,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 08:27:21,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 08:27:21,797 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 08:27:21,798 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 08:27:21,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-08-24 08:27:22,969 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 08:27:23,166 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 08:27:23,167 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-08-24 08:27:23,176 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37ae25108/51df1a14659443c1bd561632981ec6dc/FLAG3b2334301 [2023-08-24 08:27:23,189 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37ae25108/51df1a14659443c1bd561632981ec6dc [2023-08-24 08:27:23,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 08:27:23,192 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 08:27:23,193 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 08:27:23,193 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 08:27:23,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 08:27:23,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 08:27:23" (1/1) ... [2023-08-24 08:27:23,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2a0d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:27:23, skipping insertion in model container [2023-08-24 08:27:23,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 08:27:23" (1/1) ... [2023-08-24 08:27:23,216 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 08:27:23,372 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c[3526,3539] [2023-08-24 08:27:23,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 08:27:23,388 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 08:27:23,422 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c[3526,3539] [2023-08-24 08:27:23,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 08:27:23,433 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 08:27:23,433 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 08:27:23,439 INFO L206 MainTranslator]: Completed translation [2023-08-24 08:27:23,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:27:23 WrapperNode [2023-08-24 08:27:23,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 08:27:23,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 08:27:23,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 08:27:23,441 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 08:27:23,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:27:23" (1/1) ... [2023-08-24 08:27:23,462 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:27:23" (1/1) ... [2023-08-24 08:27:23,501 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 206 [2023-08-24 08:27:23,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 08:27:23,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 08:27:23,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 08:27:23,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 08:27:23,510 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:27:23" (1/1) ... [2023-08-24 08:27:23,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:27:23" (1/1) ... [2023-08-24 08:27:23,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:27:23" (1/1) ... [2023-08-24 08:27:23,523 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:27:23" (1/1) ... [2023-08-24 08:27:23,527 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:27:23" (1/1) ... [2023-08-24 08:27:23,529 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:27:23" (1/1) ... [2023-08-24 08:27:23,530 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:27:23" (1/1) ... [2023-08-24 08:27:23,531 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:27:23" (1/1) ... [2023-08-24 08:27:23,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 08:27:23,545 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 08:27:23,546 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 08:27:23,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 08:27:23,546 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:27:23" (1/1) ... [2023-08-24 08:27:23,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 08:27:23,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:27:23,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 08:27:23,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 08:27:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 08:27:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 08:27:23,616 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 08:27:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 08:27:23,616 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 08:27:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 08:27:23,616 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 08:27:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-24 08:27:23,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-24 08:27:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 08:27:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 08:27:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 08:27:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 08:27:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 08:27:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 08:27:23,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 08:27:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 08:27:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 08:27:23,620 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 08:27:23,746 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 08:27:23,748 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 08:27:24,062 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 08:27:24,149 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 08:27:24,149 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 08:27:24,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 08:27:24 BoogieIcfgContainer [2023-08-24 08:27:24,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 08:27:24,156 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 08:27:24,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 08:27:24,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 08:27:24,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 08:27:23" (1/3) ... [2023-08-24 08:27:24,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4def6adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 08:27:24, skipping insertion in model container [2023-08-24 08:27:24,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:27:23" (2/3) ... [2023-08-24 08:27:24,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4def6adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 08:27:24, skipping insertion in model container [2023-08-24 08:27:24,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 08:27:24" (3/3) ... [2023-08-24 08:27:24,162 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-08-24 08:27:24,177 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 08:27:24,178 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 08:27:24,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 08:27:24,245 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 08:27:24,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 143 transitions, 318 flow [2023-08-24 08:27:24,394 INFO L124 PetriNetUnfolderBase]: 2/139 cut-off events. [2023-08-24 08:27:24,394 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 08:27:24,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 139 events. 2/139 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2023-08-24 08:27:24,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 143 transitions, 318 flow [2023-08-24 08:27:24,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 127 transitions, 278 flow [2023-08-24 08:27:24,406 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 08:27:24,418 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 127 transitions, 278 flow [2023-08-24 08:27:24,422 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 127 transitions, 278 flow [2023-08-24 08:27:24,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 127 transitions, 278 flow [2023-08-24 08:27:24,467 INFO L124 PetriNetUnfolderBase]: 2/127 cut-off events. [2023-08-24 08:27:24,468 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 08:27:24,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 127 events. 2/127 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2023-08-24 08:27:24,469 INFO L119 LiptonReduction]: Number of co-enabled transitions 1302 [2023-08-24 08:27:28,432 INFO L134 LiptonReduction]: Checked pairs total: 7253 [2023-08-24 08:27:28,432 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-24 08:27:28,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 08:27:28,450 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;@4c779e28, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 08:27:28,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-24 08:27:28,457 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 08:27:28,457 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-08-24 08:27:28,458 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 08:27:28,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:28,458 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] [2023-08-24 08:27:28,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:28,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:28,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1293402980, now seen corresponding path program 1 times [2023-08-24 08:27:28,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:28,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927166761] [2023-08-24 08:27:28,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:28,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:29,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:29,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927166761] [2023-08-24 08:27:29,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927166761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:29,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:29,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 08:27:29,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879641837] [2023-08-24 08:27:29,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:29,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 08:27:29,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:29,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 08:27:29,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 08:27:29,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-08-24 08:27:29,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 92 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:29,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:29,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-08-24 08:27:29,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:30,926 INFO L124 PetriNetUnfolderBase]: 8869/12480 cut-off events. [2023-08-24 08:27:30,926 INFO L125 PetriNetUnfolderBase]: For 1023/1023 co-relation queries the response was YES. [2023-08-24 08:27:30,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25800 conditions, 12480 events. 8869/12480 cut-off events. For 1023/1023 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 62456 event pairs, 2184 based on Foata normal form. 2/12482 useless extension candidates. Maximal degree in co-relation 25176. Up to 4452 conditions per place. [2023-08-24 08:27:30,994 INFO L140 encePairwiseOnDemand]: 232/244 looper letters, 103 selfloop transitions, 19 changer transitions 19/141 dead transitions. [2023-08-24 08:27:30,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 141 transitions, 642 flow [2023-08-24 08:27:30,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 08:27:30,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 08:27:31,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 967 transitions. [2023-08-24 08:27:31,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4953893442622951 [2023-08-24 08:27:31,014 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 967 transitions. [2023-08-24 08:27:31,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 967 transitions. [2023-08-24 08:27:31,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:31,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 967 transitions. [2023-08-24 08:27:31,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 120.875) internal successors, (967), 8 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:31,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:31,035 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:31,037 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 92 flow. Second operand 8 states and 967 transitions. [2023-08-24 08:27:31,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 141 transitions, 642 flow [2023-08-24 08:27:31,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 141 transitions, 590 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-24 08:27:31,062 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 214 flow [2023-08-24 08:27:31,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=214, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2023-08-24 08:27:31,066 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2023-08-24 08:27:31,067 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 214 flow [2023-08-24 08:27:31,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:31,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:31,068 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] [2023-08-24 08:27:31,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 08:27:31,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:31,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:31,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1957152440, now seen corresponding path program 2 times [2023-08-24 08:27:31,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:31,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462974871] [2023-08-24 08:27:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:31,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:31,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:31,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462974871] [2023-08-24 08:27:31,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462974871] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:31,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:31,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 08:27:31,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952200198] [2023-08-24 08:27:31,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:31,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 08:27:31,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 08:27:31,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 08:27:31,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 08:27:31,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:31,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:31,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 08:27:31,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:32,014 INFO L124 PetriNetUnfolderBase]: 4177/6446 cut-off events. [2023-08-24 08:27:32,014 INFO L125 PetriNetUnfolderBase]: For 3643/3859 co-relation queries the response was YES. [2023-08-24 08:27:32,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16533 conditions, 6446 events. 4177/6446 cut-off events. For 3643/3859 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 38047 event pairs, 863 based on Foata normal form. 188/6388 useless extension candidates. Maximal degree in co-relation 13048. Up to 3891 conditions per place. [2023-08-24 08:27:32,057 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 87 selfloop transitions, 20 changer transitions 0/123 dead transitions. [2023-08-24 08:27:32,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 123 transitions, 651 flow [2023-08-24 08:27:32,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 08:27:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 08:27:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 877 transitions. [2023-08-24 08:27:32,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134660421545667 [2023-08-24 08:27:32,060 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 877 transitions. [2023-08-24 08:27:32,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 877 transitions. [2023-08-24 08:27:32,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:32,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 877 transitions. [2023-08-24 08:27:32,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.28571428571429) internal successors, (877), 7 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:32,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:32,066 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:32,066 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 214 flow. Second operand 7 states and 877 transitions. [2023-08-24 08:27:32,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 123 transitions, 651 flow [2023-08-24 08:27:32,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 123 transitions, 632 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-24 08:27:32,085 INFO L231 Difference]: Finished difference. Result has 59 places, 66 transitions, 303 flow [2023-08-24 08:27:32,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=303, PETRI_PLACES=59, PETRI_TRANSITIONS=66} [2023-08-24 08:27:32,086 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2023-08-24 08:27:32,086 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 66 transitions, 303 flow [2023-08-24 08:27:32,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:32,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:32,087 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] [2023-08-24 08:27:32,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 08:27:32,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:32,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:32,088 INFO L85 PathProgramCache]: Analyzing trace with hash -710510570, now seen corresponding path program 3 times [2023-08-24 08:27:32,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:32,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787276183] [2023-08-24 08:27:32,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:32,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:32,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:32,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787276183] [2023-08-24 08:27:32,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787276183] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:32,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:32,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 08:27:32,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228977397] [2023-08-24 08:27:32,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:32,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 08:27:32,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:32,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 08:27:32,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 08:27:32,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-08-24 08:27:32,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 66 transitions, 303 flow. Second operand has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:32,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:32,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-08-24 08:27:32,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:33,020 INFO L124 PetriNetUnfolderBase]: 5460/9155 cut-off events. [2023-08-24 08:27:33,020 INFO L125 PetriNetUnfolderBase]: For 9294/9631 co-relation queries the response was YES. [2023-08-24 08:27:33,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27539 conditions, 9155 events. 5460/9155 cut-off events. For 9294/9631 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 64636 event pairs, 1485 based on Foata normal form. 303/9232 useless extension candidates. Maximal degree in co-relation 10633. Up to 2671 conditions per place. [2023-08-24 08:27:33,091 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 88 selfloop transitions, 41 changer transitions 0/145 dead transitions. [2023-08-24 08:27:33,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 145 transitions, 852 flow [2023-08-24 08:27:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 08:27:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 08:27:33,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 661 transitions. [2023-08-24 08:27:33,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5418032786885246 [2023-08-24 08:27:33,094 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 661 transitions. [2023-08-24 08:27:33,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 661 transitions. [2023-08-24 08:27:33,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:33,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 661 transitions. [2023-08-24 08:27:33,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:33,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:33,099 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:33,099 INFO L175 Difference]: Start difference. First operand has 59 places, 66 transitions, 303 flow. Second operand 5 states and 661 transitions. [2023-08-24 08:27:33,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 145 transitions, 852 flow [2023-08-24 08:27:33,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 145 transitions, 847 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 08:27:33,113 INFO L231 Difference]: Finished difference. Result has 64 places, 89 transitions, 551 flow [2023-08-24 08:27:33,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=551, PETRI_PLACES=64, PETRI_TRANSITIONS=89} [2023-08-24 08:27:33,115 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 17 predicate places. [2023-08-24 08:27:33,117 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 89 transitions, 551 flow [2023-08-24 08:27:33,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:33,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:33,118 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] [2023-08-24 08:27:33,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 08:27:33,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:33,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:33,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1434213364, now seen corresponding path program 4 times [2023-08-24 08:27:33,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:33,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635986766] [2023-08-24 08:27:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:33,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:33,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:33,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635986766] [2023-08-24 08:27:33,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635986766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:33,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:33,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 08:27:33,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329111741] [2023-08-24 08:27:33,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:33,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 08:27:33,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:33,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 08:27:33,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 08:27:33,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-08-24 08:27:33,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 89 transitions, 551 flow. Second operand has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:33,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:33,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-08-24 08:27:33,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:34,699 INFO L124 PetriNetUnfolderBase]: 6799/11711 cut-off events. [2023-08-24 08:27:34,699 INFO L125 PetriNetUnfolderBase]: For 23454/24658 co-relation queries the response was YES. [2023-08-24 08:27:34,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42088 conditions, 11711 events. 6799/11711 cut-off events. For 23454/24658 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 89686 event pairs, 1092 based on Foata normal form. 862/12241 useless extension candidates. Maximal degree in co-relation 14560. Up to 3447 conditions per place. [2023-08-24 08:27:34,801 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 122 selfloop transitions, 98 changer transitions 2/238 dead transitions. [2023-08-24 08:27:34,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 238 transitions, 1745 flow [2023-08-24 08:27:34,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 08:27:34,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 08:27:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1050 transitions. [2023-08-24 08:27:34,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379098360655737 [2023-08-24 08:27:34,805 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1050 transitions. [2023-08-24 08:27:34,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1050 transitions. [2023-08-24 08:27:34,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:34,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1050 transitions. [2023-08-24 08:27:34,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 131.25) internal successors, (1050), 8 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:34,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:34,812 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:34,812 INFO L175 Difference]: Start difference. First operand has 64 places, 89 transitions, 551 flow. Second operand 8 states and 1050 transitions. [2023-08-24 08:27:34,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 238 transitions, 1745 flow [2023-08-24 08:27:34,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 238 transitions, 1731 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-24 08:27:34,862 INFO L231 Difference]: Finished difference. Result has 75 places, 146 transitions, 1321 flow [2023-08-24 08:27:34,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1321, PETRI_PLACES=75, PETRI_TRANSITIONS=146} [2023-08-24 08:27:34,864 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 28 predicate places. [2023-08-24 08:27:34,864 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 146 transitions, 1321 flow [2023-08-24 08:27:34,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:34,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:34,864 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] [2023-08-24 08:27:34,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 08:27:34,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:34,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:34,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1147527626, now seen corresponding path program 5 times [2023-08-24 08:27:34,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:34,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164596380] [2023-08-24 08:27:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:34,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:35,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:35,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164596380] [2023-08-24 08:27:35,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164596380] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:35,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:35,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 08:27:35,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900433802] [2023-08-24 08:27:35,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:35,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 08:27:35,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:35,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 08:27:35,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-24 08:27:35,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-08-24 08:27:35,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 146 transitions, 1321 flow. Second operand has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:35,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:35,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-08-24 08:27:35,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:37,762 INFO L124 PetriNetUnfolderBase]: 15580/23826 cut-off events. [2023-08-24 08:27:37,763 INFO L125 PetriNetUnfolderBase]: For 93257/93257 co-relation queries the response was YES. [2023-08-24 08:27:37,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104116 conditions, 23826 events. 15580/23826 cut-off events. For 93257/93257 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 158301 event pairs, 3442 based on Foata normal form. 3/23829 useless extension candidates. Maximal degree in co-relation 42434. Up to 9132 conditions per place. [2023-08-24 08:27:37,927 INFO L140 encePairwiseOnDemand]: 232/244 looper letters, 340 selfloop transitions, 27 changer transitions 105/472 dead transitions. [2023-08-24 08:27:37,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 472 transitions, 5160 flow [2023-08-24 08:27:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 08:27:37,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 08:27:37,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1085 transitions. [2023-08-24 08:27:37,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49408014571949 [2023-08-24 08:27:37,930 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1085 transitions. [2023-08-24 08:27:37,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1085 transitions. [2023-08-24 08:27:37,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:37,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1085 transitions. [2023-08-24 08:27:37,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.55555555555556) internal successors, (1085), 9 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:37,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:37,936 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:37,936 INFO L175 Difference]: Start difference. First operand has 75 places, 146 transitions, 1321 flow. Second operand 9 states and 1085 transitions. [2023-08-24 08:27:37,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 472 transitions, 5160 flow [2023-08-24 08:27:38,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 472 transitions, 5008 flow, removed 76 selfloop flow, removed 0 redundant places. [2023-08-24 08:27:38,070 INFO L231 Difference]: Finished difference. Result has 88 places, 155 transitions, 1430 flow [2023-08-24 08:27:38,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1430, PETRI_PLACES=88, PETRI_TRANSITIONS=155} [2023-08-24 08:27:38,072 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 41 predicate places. [2023-08-24 08:27:38,072 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 155 transitions, 1430 flow [2023-08-24 08:27:38,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:38,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:38,073 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] [2023-08-24 08:27:38,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 08:27:38,073 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:38,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:38,073 INFO L85 PathProgramCache]: Analyzing trace with hash -415430786, now seen corresponding path program 6 times [2023-08-24 08:27:38,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:38,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800870865] [2023-08-24 08:27:38,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:38,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:38,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:38,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800870865] [2023-08-24 08:27:38,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800870865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:38,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:38,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 08:27:38,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95399634] [2023-08-24 08:27:38,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:38,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 08:27:38,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:38,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 08:27:38,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-24 08:27:38,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 08:27:38,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 155 transitions, 1430 flow. Second operand has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:38,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:38,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 08:27:38,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:39,507 INFO L124 PetriNetUnfolderBase]: 5983/10344 cut-off events. [2023-08-24 08:27:39,507 INFO L125 PetriNetUnfolderBase]: For 47973/49877 co-relation queries the response was YES. [2023-08-24 08:27:39,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47450 conditions, 10344 events. 5983/10344 cut-off events. For 47973/49877 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 76122 event pairs, 1408 based on Foata normal form. 610/10726 useless extension candidates. Maximal degree in co-relation 37198. Up to 7149 conditions per place. [2023-08-24 08:27:39,587 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 153 selfloop transitions, 66 changer transitions 5/248 dead transitions. [2023-08-24 08:27:39,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 248 transitions, 2447 flow [2023-08-24 08:27:39,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 08:27:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 08:27:39,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1350 transitions. [2023-08-24 08:27:39,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029806259314457 [2023-08-24 08:27:39,592 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1350 transitions. [2023-08-24 08:27:39,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1350 transitions. [2023-08-24 08:27:39,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:39,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1350 transitions. [2023-08-24 08:27:39,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 122.72727272727273) internal successors, (1350), 11 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:39,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 244.0) internal successors, (2928), 12 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:39,600 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 244.0) internal successors, (2928), 12 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:39,600 INFO L175 Difference]: Start difference. First operand has 88 places, 155 transitions, 1430 flow. Second operand 11 states and 1350 transitions. [2023-08-24 08:27:39,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 248 transitions, 2447 flow [2023-08-24 08:27:39,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 248 transitions, 2405 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-24 08:27:39,680 INFO L231 Difference]: Finished difference. Result has 99 places, 182 transitions, 1872 flow [2023-08-24 08:27:39,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1872, PETRI_PLACES=99, PETRI_TRANSITIONS=182} [2023-08-24 08:27:39,681 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 52 predicate places. [2023-08-24 08:27:39,681 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 182 transitions, 1872 flow [2023-08-24 08:27:39,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:39,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:39,682 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] [2023-08-24 08:27:39,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 08:27:39,682 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:39,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:39,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1255788140, now seen corresponding path program 7 times [2023-08-24 08:27:39,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:39,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993944509] [2023-08-24 08:27:39,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:39,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:39,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:39,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:39,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993944509] [2023-08-24 08:27:39,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993944509] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:39,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:39,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 08:27:39,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616073483] [2023-08-24 08:27:39,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:39,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 08:27:39,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:39,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 08:27:39,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-24 08:27:39,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 08:27:39,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 182 transitions, 1872 flow. Second operand has 7 states, 7 states have (on average 115.14285714285714) internal successors, (806), 7 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:39,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:39,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 08:27:39,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:41,176 INFO L124 PetriNetUnfolderBase]: 6809/11935 cut-off events. [2023-08-24 08:27:41,176 INFO L125 PetriNetUnfolderBase]: For 65301/67687 co-relation queries the response was YES. [2023-08-24 08:27:41,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56670 conditions, 11935 events. 6809/11935 cut-off events. For 65301/67687 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 91797 event pairs, 1243 based on Foata normal form. 680/12337 useless extension candidates. Maximal degree in co-relation 46791. Up to 4494 conditions per place. [2023-08-24 08:27:41,252 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 157 selfloop transitions, 93 changer transitions 11/285 dead transitions. [2023-08-24 08:27:41,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 285 transitions, 3090 flow [2023-08-24 08:27:41,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 08:27:41,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 08:27:41,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1122 transitions. [2023-08-24 08:27:41,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5109289617486339 [2023-08-24 08:27:41,256 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1122 transitions. [2023-08-24 08:27:41,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1122 transitions. [2023-08-24 08:27:41,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:41,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1122 transitions. [2023-08-24 08:27:41,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 124.66666666666667) internal successors, (1122), 9 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:41,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:41,262 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:41,263 INFO L175 Difference]: Start difference. First operand has 99 places, 182 transitions, 1872 flow. Second operand 9 states and 1122 transitions. [2023-08-24 08:27:41,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 285 transitions, 3090 flow [2023-08-24 08:27:41,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 285 transitions, 3031 flow, removed 27 selfloop flow, removed 2 redundant places. [2023-08-24 08:27:41,389 INFO L231 Difference]: Finished difference. Result has 108 places, 211 transitions, 2531 flow [2023-08-24 08:27:41,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1763, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2531, PETRI_PLACES=108, PETRI_TRANSITIONS=211} [2023-08-24 08:27:41,390 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 61 predicate places. [2023-08-24 08:27:41,390 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 211 transitions, 2531 flow [2023-08-24 08:27:41,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.14285714285714) internal successors, (806), 7 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:41,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:41,391 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] [2023-08-24 08:27:41,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 08:27:41,391 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:41,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:41,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1833021434, now seen corresponding path program 8 times [2023-08-24 08:27:41,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:41,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726370541] [2023-08-24 08:27:41,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:41,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:41,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:41,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726370541] [2023-08-24 08:27:41,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726370541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:41,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:41,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 08:27:41,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060441693] [2023-08-24 08:27:41,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:41,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 08:27:41,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:41,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 08:27:41,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 08:27:41,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 08:27:41,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 211 transitions, 2531 flow. Second operand has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:41,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:41,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 08:27:41,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:42,860 INFO L124 PetriNetUnfolderBase]: 6070/10787 cut-off events. [2023-08-24 08:27:42,861 INFO L125 PetriNetUnfolderBase]: For 81945/84095 co-relation queries the response was YES. [2023-08-24 08:27:42,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56136 conditions, 10787 events. 6070/10787 cut-off events. For 81945/84095 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 82947 event pairs, 1824 based on Foata normal form. 550/11053 useless extension candidates. Maximal degree in co-relation 54039. Up to 7996 conditions per place. [2023-08-24 08:27:42,927 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 149 selfloop transitions, 55 changer transitions 16/240 dead transitions. [2023-08-24 08:27:42,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 240 transitions, 3090 flow [2023-08-24 08:27:42,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 08:27:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 08:27:42,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 857 transitions. [2023-08-24 08:27:42,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5017564402810304 [2023-08-24 08:27:42,930 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 857 transitions. [2023-08-24 08:27:42,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 857 transitions. [2023-08-24 08:27:42,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:42,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 857 transitions. [2023-08-24 08:27:42,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.42857142857143) internal successors, (857), 7 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:42,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:42,934 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:42,934 INFO L175 Difference]: Start difference. First operand has 108 places, 211 transitions, 2531 flow. Second operand 7 states and 857 transitions. [2023-08-24 08:27:42,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 240 transitions, 3090 flow [2023-08-24 08:27:43,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 240 transitions, 3064 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-24 08:27:43,050 INFO L231 Difference]: Finished difference. Result has 111 places, 197 transitions, 2506 flow [2023-08-24 08:27:43,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2506, PETRI_PLACES=111, PETRI_TRANSITIONS=197} [2023-08-24 08:27:43,051 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 64 predicate places. [2023-08-24 08:27:43,051 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 197 transitions, 2506 flow [2023-08-24 08:27:43,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:43,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:43,051 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] [2023-08-24 08:27:43,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 08:27:43,052 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:43,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:43,052 INFO L85 PathProgramCache]: Analyzing trace with hash 982709524, now seen corresponding path program 9 times [2023-08-24 08:27:43,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:43,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942609248] [2023-08-24 08:27:43,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:43,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:43,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:43,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942609248] [2023-08-24 08:27:43,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942609248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:43,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:43,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 08:27:43,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887560672] [2023-08-24 08:27:43,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:43,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 08:27:43,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:43,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 08:27:43,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 08:27:43,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 08:27:43,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 197 transitions, 2506 flow. Second operand has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:43,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:43,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 08:27:43,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:44,047 INFO L124 PetriNetUnfolderBase]: 3743/7026 cut-off events. [2023-08-24 08:27:44,048 INFO L125 PetriNetUnfolderBase]: For 50194/51904 co-relation queries the response was YES. [2023-08-24 08:27:44,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35848 conditions, 7026 events. 3743/7026 cut-off events. For 50194/51904 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 52874 event pairs, 1030 based on Foata normal form. 358/7226 useless extension candidates. Maximal degree in co-relation 34288. Up to 5250 conditions per place. [2023-08-24 08:27:44,092 INFO L140 encePairwiseOnDemand]: 235/244 looper letters, 156 selfloop transitions, 48 changer transitions 1/217 dead transitions. [2023-08-24 08:27:44,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 217 transitions, 2897 flow [2023-08-24 08:27:44,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 08:27:44,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 08:27:44,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 856 transitions. [2023-08-24 08:27:44,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011709601873536 [2023-08-24 08:27:44,098 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 856 transitions. [2023-08-24 08:27:44,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 856 transitions. [2023-08-24 08:27:44,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:44,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 856 transitions. [2023-08-24 08:27:44,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.28571428571429) internal successors, (856), 7 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:44,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:44,103 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:44,103 INFO L175 Difference]: Start difference. First operand has 111 places, 197 transitions, 2506 flow. Second operand 7 states and 856 transitions. [2023-08-24 08:27:44,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 217 transitions, 2897 flow [2023-08-24 08:27:44,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 217 transitions, 2803 flow, removed 16 selfloop flow, removed 11 redundant places. [2023-08-24 08:27:44,183 INFO L231 Difference]: Finished difference. Result has 98 places, 177 transitions, 2273 flow [2023-08-24 08:27:44,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2273, PETRI_PLACES=98, PETRI_TRANSITIONS=177} [2023-08-24 08:27:44,184 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 51 predicate places. [2023-08-24 08:27:44,184 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 177 transitions, 2273 flow [2023-08-24 08:27:44,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:44,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:44,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:27:44,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 08:27:44,185 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:44,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:44,185 INFO L85 PathProgramCache]: Analyzing trace with hash 492200084, now seen corresponding path program 10 times [2023-08-24 08:27:44,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:44,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032052881] [2023-08-24 08:27:44,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:44,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:44,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:44,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032052881] [2023-08-24 08:27:44,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032052881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:44,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:44,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 08:27:44,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206880466] [2023-08-24 08:27:44,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:44,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 08:27:44,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:44,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 08:27:44,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-24 08:27:44,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 08:27:44,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 177 transitions, 2273 flow. Second operand has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:44,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:44,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 08:27:44,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:45,288 INFO L124 PetriNetUnfolderBase]: 3745/7062 cut-off events. [2023-08-24 08:27:45,288 INFO L125 PetriNetUnfolderBase]: For 47706/49246 co-relation queries the response was YES. [2023-08-24 08:27:45,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34099 conditions, 7062 events. 3745/7062 cut-off events. For 47706/49246 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 53422 event pairs, 781 based on Foata normal form. 400/7304 useless extension candidates. Maximal degree in co-relation 16398. Up to 4125 conditions per place. [2023-08-24 08:27:45,352 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 168 selfloop transitions, 76 changer transitions 6/262 dead transitions. [2023-08-24 08:27:45,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 262 transitions, 3470 flow [2023-08-24 08:27:45,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 08:27:45,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 08:27:45,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1338 transitions. [2023-08-24 08:27:45,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49850968703427717 [2023-08-24 08:27:45,356 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1338 transitions. [2023-08-24 08:27:45,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1338 transitions. [2023-08-24 08:27:45,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:45,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1338 transitions. [2023-08-24 08:27:45,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 121.63636363636364) internal successors, (1338), 11 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:45,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 244.0) internal successors, (2928), 12 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:45,369 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 244.0) internal successors, (2928), 12 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:45,369 INFO L175 Difference]: Start difference. First operand has 98 places, 177 transitions, 2273 flow. Second operand 11 states and 1338 transitions. [2023-08-24 08:27:45,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 262 transitions, 3470 flow [2023-08-24 08:27:45,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 262 transitions, 3448 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-24 08:27:45,432 INFO L231 Difference]: Finished difference. Result has 109 places, 196 transitions, 2755 flow [2023-08-24 08:27:45,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2755, PETRI_PLACES=109, PETRI_TRANSITIONS=196} [2023-08-24 08:27:45,433 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 62 predicate places. [2023-08-24 08:27:45,433 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 196 transitions, 2755 flow [2023-08-24 08:27:45,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:45,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:45,433 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] [2023-08-24 08:27:45,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 08:27:45,434 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:45,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:45,434 INFO L85 PathProgramCache]: Analyzing trace with hash -348244088, now seen corresponding path program 11 times [2023-08-24 08:27:45,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:45,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646920225] [2023-08-24 08:27:45,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:45,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:45,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:45,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646920225] [2023-08-24 08:27:45,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646920225] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:45,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:45,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 08:27:45,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539188252] [2023-08-24 08:27:45,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:45,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 08:27:45,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:45,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 08:27:45,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-24 08:27:45,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 08:27:45,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 196 transitions, 2755 flow. Second operand has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:45,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:45,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 08:27:45,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:46,786 INFO L124 PetriNetUnfolderBase]: 3727/7018 cut-off events. [2023-08-24 08:27:46,786 INFO L125 PetriNetUnfolderBase]: For 56337/58231 co-relation queries the response was YES. [2023-08-24 08:27:46,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35864 conditions, 7018 events. 3727/7018 cut-off events. For 56337/58231 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 53094 event pairs, 949 based on Foata normal form. 278/7138 useless extension candidates. Maximal degree in co-relation 16986. Up to 5188 conditions per place. [2023-08-24 08:27:46,836 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 183 selfloop transitions, 58 changer transitions 1/254 dead transitions. [2023-08-24 08:27:46,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 254 transitions, 3550 flow [2023-08-24 08:27:46,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 08:27:46,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 08:27:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1676 transitions. [2023-08-24 08:27:46,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49063231850117095 [2023-08-24 08:27:46,841 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1676 transitions. [2023-08-24 08:27:46,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1676 transitions. [2023-08-24 08:27:46,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:46,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1676 transitions. [2023-08-24 08:27:46,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 119.71428571428571) internal successors, (1676), 14 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:46,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 244.0) internal successors, (3660), 15 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:46,851 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 244.0) internal successors, (3660), 15 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:46,851 INFO L175 Difference]: Start difference. First operand has 109 places, 196 transitions, 2755 flow. Second operand 14 states and 1676 transitions. [2023-08-24 08:27:46,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 254 transitions, 3550 flow [2023-08-24 08:27:46,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 254 transitions, 3458 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-24 08:27:46,946 INFO L231 Difference]: Finished difference. Result has 119 places, 199 transitions, 2828 flow [2023-08-24 08:27:46,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=2663, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2828, PETRI_PLACES=119, PETRI_TRANSITIONS=199} [2023-08-24 08:27:46,947 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 72 predicate places. [2023-08-24 08:27:46,947 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 199 transitions, 2828 flow [2023-08-24 08:27:46,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:46,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:46,948 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] [2023-08-24 08:27:46,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 08:27:46,948 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:46,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:46,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1375369862, now seen corresponding path program 12 times [2023-08-24 08:27:46,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:46,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381289233] [2023-08-24 08:27:46,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:46,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:47,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:47,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381289233] [2023-08-24 08:27:47,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381289233] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:47,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:47,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 08:27:47,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014851846] [2023-08-24 08:27:47,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:47,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 08:27:47,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:47,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 08:27:47,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 08:27:47,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-08-24 08:27:47,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 199 transitions, 2828 flow. Second operand has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:47,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:47,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-08-24 08:27:47,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:48,107 INFO L124 PetriNetUnfolderBase]: 3512/6823 cut-off events. [2023-08-24 08:27:48,108 INFO L125 PetriNetUnfolderBase]: For 57669/59717 co-relation queries the response was YES. [2023-08-24 08:27:48,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34929 conditions, 6823 events. 3512/6823 cut-off events. For 57669/59717 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 53682 event pairs, 378 based on Foata normal form. 1059/7673 useless extension candidates. Maximal degree in co-relation 17000. Up to 1997 conditions per place. [2023-08-24 08:27:48,158 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 112 selfloop transitions, 170 changer transitions 10/304 dead transitions. [2023-08-24 08:27:48,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 304 transitions, 4224 flow [2023-08-24 08:27:48,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 08:27:48,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 08:27:48,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1041 transitions. [2023-08-24 08:27:48,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5332991803278688 [2023-08-24 08:27:48,161 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1041 transitions. [2023-08-24 08:27:48,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1041 transitions. [2023-08-24 08:27:48,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:48,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1041 transitions. [2023-08-24 08:27:48,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.125) internal successors, (1041), 8 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:48,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:48,167 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:48,168 INFO L175 Difference]: Start difference. First operand has 119 places, 199 transitions, 2828 flow. Second operand 8 states and 1041 transitions. [2023-08-24 08:27:48,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 304 transitions, 4224 flow [2023-08-24 08:27:48,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 304 transitions, 4101 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-24 08:27:48,256 INFO L231 Difference]: Finished difference. Result has 123 places, 220 transitions, 3492 flow [2023-08-24 08:27:48,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3492, PETRI_PLACES=123, PETRI_TRANSITIONS=220} [2023-08-24 08:27:48,257 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 76 predicate places. [2023-08-24 08:27:48,257 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 220 transitions, 3492 flow [2023-08-24 08:27:48,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:48,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:48,258 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] [2023-08-24 08:27:48,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 08:27:48,258 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:48,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:48,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1329701130, now seen corresponding path program 13 times [2023-08-24 08:27:48,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:48,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92175761] [2023-08-24 08:27:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:48,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:48,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:48,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92175761] [2023-08-24 08:27:48,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92175761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:48,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:48,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 08:27:48,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261477686] [2023-08-24 08:27:48,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:48,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 08:27:48,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:48,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 08:27:48,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 08:27:48,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-08-24 08:27:48,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 220 transitions, 3492 flow. Second operand has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:48,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:48,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-08-24 08:27:48,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:49,214 INFO L124 PetriNetUnfolderBase]: 2291/4704 cut-off events. [2023-08-24 08:27:49,215 INFO L125 PetriNetUnfolderBase]: For 51187/52627 co-relation queries the response was YES. [2023-08-24 08:27:49,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27068 conditions, 4704 events. 2291/4704 cut-off events. For 51187/52627 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 36065 event pairs, 219 based on Foata normal form. 937/5581 useless extension candidates. Maximal degree in co-relation 15438. Up to 1303 conditions per place. [2023-08-24 08:27:49,245 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 104 selfloop transitions, 164 changer transitions 57/337 dead transitions. [2023-08-24 08:27:49,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 337 transitions, 5526 flow [2023-08-24 08:27:49,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 08:27:49,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 08:27:49,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1033 transitions. [2023-08-24 08:27:49,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292008196721312 [2023-08-24 08:27:49,247 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1033 transitions. [2023-08-24 08:27:49,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1033 transitions. [2023-08-24 08:27:49,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:49,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1033 transitions. [2023-08-24 08:27:49,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.125) internal successors, (1033), 8 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:49,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:49,253 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:49,253 INFO L175 Difference]: Start difference. First operand has 123 places, 220 transitions, 3492 flow. Second operand 8 states and 1033 transitions. [2023-08-24 08:27:49,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 337 transitions, 5526 flow [2023-08-24 08:27:49,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 337 transitions, 5389 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-08-24 08:27:49,338 INFO L231 Difference]: Finished difference. Result has 130 places, 215 transitions, 3758 flow [2023-08-24 08:27:49,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=3278, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3758, PETRI_PLACES=130, PETRI_TRANSITIONS=215} [2023-08-24 08:27:49,339 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 83 predicate places. [2023-08-24 08:27:49,339 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 215 transitions, 3758 flow [2023-08-24 08:27:49,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:49,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:49,339 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] [2023-08-24 08:27:49,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 08:27:49,340 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:49,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:49,340 INFO L85 PathProgramCache]: Analyzing trace with hash -707740490, now seen corresponding path program 14 times [2023-08-24 08:27:49,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:49,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061191895] [2023-08-24 08:27:49,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:49,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:49,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:49,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:49,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061191895] [2023-08-24 08:27:49,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061191895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:49,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:49,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 08:27:49,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955731580] [2023-08-24 08:27:49,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:49,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 08:27:49,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:49,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 08:27:49,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-24 08:27:49,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-08-24 08:27:49,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 215 transitions, 3758 flow. Second operand has 8 states, 8 states have (on average 116.625) internal successors, (933), 8 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:49,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:49,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-08-24 08:27:49,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:50,227 INFO L124 PetriNetUnfolderBase]: 1813/3828 cut-off events. [2023-08-24 08:27:50,228 INFO L125 PetriNetUnfolderBase]: For 47877/48713 co-relation queries the response was YES. [2023-08-24 08:27:50,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23003 conditions, 3828 events. 1813/3828 cut-off events. For 47877/48713 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 28692 event pairs, 172 based on Foata normal form. 468/4232 useless extension candidates. Maximal degree in co-relation 10659. Up to 1021 conditions per place. [2023-08-24 08:27:50,253 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 85 selfloop transitions, 195 changer transitions 30/322 dead transitions. [2023-08-24 08:27:50,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 322 transitions, 5511 flow [2023-08-24 08:27:50,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 08:27:50,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 08:27:50,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1141 transitions. [2023-08-24 08:27:50,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5195810564663024 [2023-08-24 08:27:50,256 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1141 transitions. [2023-08-24 08:27:50,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1141 transitions. [2023-08-24 08:27:50,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:50,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1141 transitions. [2023-08-24 08:27:50,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:50,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:50,261 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:50,261 INFO L175 Difference]: Start difference. First operand has 130 places, 215 transitions, 3758 flow. Second operand 9 states and 1141 transitions. [2023-08-24 08:27:50,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 322 transitions, 5511 flow [2023-08-24 08:27:50,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 322 transitions, 5367 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-24 08:27:50,352 INFO L231 Difference]: Finished difference. Result has 136 places, 232 transitions, 4324 flow [2023-08-24 08:27:50,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=3644, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4324, PETRI_PLACES=136, PETRI_TRANSITIONS=232} [2023-08-24 08:27:50,353 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 89 predicate places. [2023-08-24 08:27:50,353 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 232 transitions, 4324 flow [2023-08-24 08:27:50,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.625) internal successors, (933), 8 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:50,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:50,353 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] [2023-08-24 08:27:50,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-24 08:27:50,354 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:50,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:50,354 INFO L85 PathProgramCache]: Analyzing trace with hash 476852654, now seen corresponding path program 15 times [2023-08-24 08:27:50,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:50,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749981128] [2023-08-24 08:27:50,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:50,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:50,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:50,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:50,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749981128] [2023-08-24 08:27:50,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749981128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:50,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:50,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-24 08:27:50,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129689136] [2023-08-24 08:27:50,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:50,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 08:27:50,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:50,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 08:27:50,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-24 08:27:50,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 08:27:50,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 232 transitions, 4324 flow. Second operand has 10 states, 10 states have (on average 113.9) internal successors, (1139), 10 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:50,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:50,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 08:27:50,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:51,425 INFO L124 PetriNetUnfolderBase]: 1673/3572 cut-off events. [2023-08-24 08:27:51,425 INFO L125 PetriNetUnfolderBase]: For 52539/53347 co-relation queries the response was YES. [2023-08-24 08:27:51,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22449 conditions, 3572 events. 1673/3572 cut-off events. For 52539/53347 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 26113 event pairs, 414 based on Foata normal form. 152/3690 useless extension candidates. Maximal degree in co-relation 8497. Up to 2476 conditions per place. [2023-08-24 08:27:51,448 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 222 selfloop transitions, 59 changer transitions 8/301 dead transitions. [2023-08-24 08:27:51,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 301 transitions, 5306 flow [2023-08-24 08:27:51,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-24 08:27:51,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-24 08:27:51,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2249 transitions. [2023-08-24 08:27:51,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48511647972389993 [2023-08-24 08:27:51,451 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2249 transitions. [2023-08-24 08:27:51,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2249 transitions. [2023-08-24 08:27:51,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:51,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2249 transitions. [2023-08-24 08:27:51,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 118.36842105263158) internal successors, (2249), 19 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:51,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 244.0) internal successors, (4880), 20 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:51,459 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 244.0) internal successors, (4880), 20 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:51,459 INFO L175 Difference]: Start difference. First operand has 136 places, 232 transitions, 4324 flow. Second operand 19 states and 2249 transitions. [2023-08-24 08:27:51,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 301 transitions, 5306 flow [2023-08-24 08:27:51,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 301 transitions, 5128 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-08-24 08:27:51,550 INFO L231 Difference]: Finished difference. Result has 151 places, 232 transitions, 4238 flow [2023-08-24 08:27:51,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=4167, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4238, PETRI_PLACES=151, PETRI_TRANSITIONS=232} [2023-08-24 08:27:51,550 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 104 predicate places. [2023-08-24 08:27:51,550 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 232 transitions, 4238 flow [2023-08-24 08:27:51,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.9) internal successors, (1139), 10 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:51,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:51,551 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] [2023-08-24 08:27:51,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-24 08:27:51,551 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:51,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:51,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1218042176, now seen corresponding path program 16 times [2023-08-24 08:27:51,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:51,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681468233] [2023-08-24 08:27:51,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:51,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:51,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:51,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681468233] [2023-08-24 08:27:51,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681468233] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:51,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:51,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 08:27:51,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237497746] [2023-08-24 08:27:51,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:51,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 08:27:51,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:51,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 08:27:51,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-24 08:27:51,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-08-24 08:27:51,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 232 transitions, 4238 flow. Second operand has 8 states, 8 states have (on average 116.625) internal successors, (933), 8 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:51,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:51,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-08-24 08:27:51,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:52,298 INFO L124 PetriNetUnfolderBase]: 1633/3484 cut-off events. [2023-08-24 08:27:52,298 INFO L125 PetriNetUnfolderBase]: For 51049/51993 co-relation queries the response was YES. [2023-08-24 08:27:52,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21578 conditions, 3484 events. 1633/3484 cut-off events. For 51049/51993 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 25736 event pairs, 167 based on Foata normal form. 492/3916 useless extension candidates. Maximal degree in co-relation 8350. Up to 948 conditions per place. [2023-08-24 08:27:52,324 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 85 selfloop transitions, 195 changer transitions 7/299 dead transitions. [2023-08-24 08:27:52,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 299 transitions, 5298 flow [2023-08-24 08:27:52,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 08:27:52,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 08:27:52,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1141 transitions. [2023-08-24 08:27:52,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5195810564663024 [2023-08-24 08:27:52,326 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1141 transitions. [2023-08-24 08:27:52,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1141 transitions. [2023-08-24 08:27:52,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:52,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1141 transitions. [2023-08-24 08:27:52,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:52,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:52,330 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:52,330 INFO L175 Difference]: Start difference. First operand has 151 places, 232 transitions, 4238 flow. Second operand 9 states and 1141 transitions. [2023-08-24 08:27:52,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 299 transitions, 5298 flow [2023-08-24 08:27:52,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 299 transitions, 5145 flow, removed 6 selfloop flow, removed 16 redundant places. [2023-08-24 08:27:52,421 INFO L231 Difference]: Finished difference. Result has 142 places, 232 transitions, 4490 flow [2023-08-24 08:27:52,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=4070, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4490, PETRI_PLACES=142, PETRI_TRANSITIONS=232} [2023-08-24 08:27:52,421 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 95 predicate places. [2023-08-24 08:27:52,422 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 232 transitions, 4490 flow [2023-08-24 08:27:52,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.625) internal successors, (933), 8 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:52,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:52,422 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] [2023-08-24 08:27:52,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-24 08:27:52,423 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:52,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:52,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1268936102, now seen corresponding path program 17 times [2023-08-24 08:27:52,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:52,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174455286] [2023-08-24 08:27:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:52,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:52,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:52,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174455286] [2023-08-24 08:27:52,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174455286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:52,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:52,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-24 08:27:52,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50411292] [2023-08-24 08:27:52,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:52,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 08:27:52,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:52,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 08:27:52,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-24 08:27:52,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-24 08:27:52,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 232 transitions, 4490 flow. Second operand has 10 states, 10 states have (on average 113.9) internal successors, (1139), 10 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:52,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:52,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-24 08:27:52,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:53,503 INFO L124 PetriNetUnfolderBase]: 1680/3621 cut-off events. [2023-08-24 08:27:53,503 INFO L125 PetriNetUnfolderBase]: For 62888/63748 co-relation queries the response was YES. [2023-08-24 08:27:53,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23748 conditions, 3621 events. 1680/3621 cut-off events. For 62888/63748 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 27003 event pairs, 432 based on Foata normal form. 166/3745 useless extension candidates. Maximal degree in co-relation 9133. Up to 2393 conditions per place. [2023-08-24 08:27:53,529 INFO L140 encePairwiseOnDemand]: 235/244 looper letters, 205 selfloop transitions, 46 changer transitions 46/309 dead transitions. [2023-08-24 08:27:53,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 309 transitions, 5869 flow [2023-08-24 08:27:53,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-24 08:27:53,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-24 08:27:53,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2025 transitions. [2023-08-24 08:27:53,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4881870781099325 [2023-08-24 08:27:53,532 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2025 transitions. [2023-08-24 08:27:53,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2025 transitions. [2023-08-24 08:27:53,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:53,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2025 transitions. [2023-08-24 08:27:53,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 119.11764705882354) internal successors, (2025), 17 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:53,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 244.0) internal successors, (4392), 18 states have internal predecessors, (4392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:53,538 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 244.0) internal successors, (4392), 18 states have internal predecessors, (4392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:53,538 INFO L175 Difference]: Start difference. First operand has 142 places, 232 transitions, 4490 flow. Second operand 17 states and 2025 transitions. [2023-08-24 08:27:53,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 309 transitions, 5869 flow [2023-08-24 08:27:53,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 309 transitions, 5777 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-08-24 08:27:53,627 INFO L231 Difference]: Finished difference. Result has 155 places, 222 transitions, 4366 flow [2023-08-24 08:27:53,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=4419, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4366, PETRI_PLACES=155, PETRI_TRANSITIONS=222} [2023-08-24 08:27:53,628 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 108 predicate places. [2023-08-24 08:27:53,628 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 222 transitions, 4366 flow [2023-08-24 08:27:53,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.9) internal successors, (1139), 10 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:53,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:53,629 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] [2023-08-24 08:27:53,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-24 08:27:53,629 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:53,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:53,630 INFO L85 PathProgramCache]: Analyzing trace with hash 391645214, now seen corresponding path program 18 times [2023-08-24 08:27:53,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:53,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030677189] [2023-08-24 08:27:53,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:53,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:53,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:53,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:53,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030677189] [2023-08-24 08:27:53,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030677189] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:53,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:53,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 08:27:53,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997236749] [2023-08-24 08:27:53,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:53,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 08:27:53,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:53,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 08:27:53,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-24 08:27:53,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-08-24 08:27:53,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 222 transitions, 4366 flow. Second operand has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:53,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:53,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-08-24 08:27:53,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:54,512 INFO L124 PetriNetUnfolderBase]: 1558/3376 cut-off events. [2023-08-24 08:27:54,512 INFO L125 PetriNetUnfolderBase]: For 59964/60978 co-relation queries the response was YES. [2023-08-24 08:27:54,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22277 conditions, 3376 events. 1558/3376 cut-off events. For 59964/60978 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 25266 event pairs, 176 based on Foata normal form. 532/3850 useless extension candidates. Maximal degree in co-relation 7874. Up to 915 conditions per place. [2023-08-24 08:27:54,536 INFO L140 encePairwiseOnDemand]: 234/244 looper letters, 85 selfloop transitions, 184 changer transitions 22/302 dead transitions. [2023-08-24 08:27:54,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 302 transitions, 5666 flow [2023-08-24 08:27:54,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 08:27:54,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 08:27:54,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1494 transitions. [2023-08-24 08:27:54,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102459016393442 [2023-08-24 08:27:54,539 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1494 transitions. [2023-08-24 08:27:54,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1494 transitions. [2023-08-24 08:27:54,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:54,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1494 transitions. [2023-08-24 08:27:54,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 124.5) internal successors, (1494), 12 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:54,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:54,543 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:54,543 INFO L175 Difference]: Start difference. First operand has 155 places, 222 transitions, 4366 flow. Second operand 12 states and 1494 transitions. [2023-08-24 08:27:54,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 302 transitions, 5666 flow [2023-08-24 08:27:54,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 302 transitions, 5541 flow, removed 17 selfloop flow, removed 11 redundant places. [2023-08-24 08:27:54,645 INFO L231 Difference]: Finished difference. Result has 150 places, 218 transitions, 4520 flow [2023-08-24 08:27:54,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=4231, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4520, PETRI_PLACES=150, PETRI_TRANSITIONS=218} [2023-08-24 08:27:54,646 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 103 predicate places. [2023-08-24 08:27:54,646 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 218 transitions, 4520 flow [2023-08-24 08:27:54,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:54,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:27:54,646 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] [2023-08-24 08:27:54,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-24 08:27:54,647 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 08:27:54,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:27:54,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1040144682, now seen corresponding path program 19 times [2023-08-24 08:27:54,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:27:54,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211225018] [2023-08-24 08:27:54,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:27:54,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:27:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:27:54,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:27:54,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:27:54,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211225018] [2023-08-24 08:27:54,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211225018] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:27:54,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:27:54,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 08:27:54,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293343244] [2023-08-24 08:27:54,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:27:54,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 08:27:54,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:27:54,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 08:27:54,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-24 08:27:54,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-08-24 08:27:54,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 218 transitions, 4520 flow. Second operand has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:54,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:27:54,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-08-24 08:27:54,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:27:55,096 INFO L124 PetriNetUnfolderBase]: 346/797 cut-off events. [2023-08-24 08:27:55,096 INFO L125 PetriNetUnfolderBase]: For 15832/16142 co-relation queries the response was YES. [2023-08-24 08:27:55,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6356 conditions, 797 events. 346/797 cut-off events. For 15832/16142 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4932 event pairs, 6 based on Foata normal form. 296/1093 useless extension candidates. Maximal degree in co-relation 5144. Up to 211 conditions per place. [2023-08-24 08:27:55,100 INFO L140 encePairwiseOnDemand]: 236/244 looper letters, 0 selfloop transitions, 0 changer transitions 130/130 dead transitions. [2023-08-24 08:27:55,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 130 transitions, 2617 flow [2023-08-24 08:27:55,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 08:27:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 08:27:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1436 transitions. [2023-08-24 08:27:55,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49043715846994534 [2023-08-24 08:27:55,102 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1436 transitions. [2023-08-24 08:27:55,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1436 transitions. [2023-08-24 08:27:55,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:27:55,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1436 transitions. [2023-08-24 08:27:55,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 119.66666666666667) internal successors, (1436), 12 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:55,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:55,106 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:55,106 INFO L175 Difference]: Start difference. First operand has 150 places, 218 transitions, 4520 flow. Second operand 12 states and 1436 transitions. [2023-08-24 08:27:55,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 130 transitions, 2617 flow [2023-08-24 08:27:55,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 130 transitions, 2291 flow, removed 23 selfloop flow, removed 21 redundant places. [2023-08-24 08:27:55,146 INFO L231 Difference]: Finished difference. Result has 123 places, 0 transitions, 0 flow [2023-08-24 08:27:55,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=123, PETRI_TRANSITIONS=0} [2023-08-24 08:27:55,146 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 76 predicate places. [2023-08-24 08:27:55,146 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 0 transitions, 0 flow [2023-08-24 08:27:55,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:27:55,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-24 08:27:55,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-24 08:27:55,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-24 08:27:55,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-24 08:27:55,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-24 08:27:55,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-24 08:27:55,151 INFO L445 BasicCegarLoop]: Path program histogram: [19] [2023-08-24 08:27:55,153 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 08:27:55,154 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 08:27:55,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 08:27:55 BasicIcfg [2023-08-24 08:27:55,156 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 08:27:55,157 INFO L158 Benchmark]: Toolchain (without parser) took 31964.50ms. Allocated memory was 358.6MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 334.5MB in the beginning and 6.9GB in the end (delta: -6.5GB). Peak memory consumption was 977.8MB. Max. memory is 16.0GB. [2023-08-24 08:27:55,157 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 358.6MB. Free memory is still 335.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 08:27:55,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.64ms. Allocated memory is still 358.6MB. Free memory was 334.3MB in the beginning and 322.7MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 08:27:55,157 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.84ms. Allocated memory is still 358.6MB. Free memory was 322.7MB in the beginning and 320.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 08:27:55,157 INFO L158 Benchmark]: Boogie Preprocessor took 42.74ms. Allocated memory is still 358.6MB. Free memory was 320.6MB in the beginning and 318.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 08:27:55,158 INFO L158 Benchmark]: RCFGBuilder took 607.65ms. Allocated memory is still 358.6MB. Free memory was 318.9MB in the beginning and 295.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-24 08:27:55,158 INFO L158 Benchmark]: TraceAbstraction took 31000.73ms. Allocated memory was 358.6MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 295.2MB in the beginning and 6.9GB in the end (delta: -6.6GB). Peak memory consumption was 937.9MB. Max. memory is 16.0GB. [2023-08-24 08:27:55,159 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 358.6MB. Free memory is still 335.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 246.64ms. Allocated memory is still 358.6MB. Free memory was 334.3MB in the beginning and 322.7MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.84ms. Allocated memory is still 358.6MB. Free memory was 322.7MB in the beginning and 320.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 42.74ms. Allocated memory is still 358.6MB. Free memory was 320.6MB in the beginning and 318.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 607.65ms. Allocated memory is still 358.6MB. Free memory was 318.9MB in the beginning and 295.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 31000.73ms. Allocated memory was 358.6MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 295.2MB in the beginning and 6.9GB in the end (delta: -6.6GB). Peak memory consumption was 937.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 138 PlacesBefore, 47 PlacesAfterwards, 127 TransitionsBefore, 34 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 8 FixpointIterations, 69 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 101 TotalNumberOfCompositions, 7253 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2918, independent: 2652, independent conditional: 0, independent unconditional: 2652, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 625, independent: 600, independent conditional: 0, independent unconditional: 600, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2918, independent: 2052, independent conditional: 0, independent unconditional: 2052, dependent: 241, dependent conditional: 0, dependent unconditional: 241, unknown: 625, unknown conditional: 0, unknown unconditional: 625] , Statistics on independence cache: Total cache size (in pairs): 152, Positive cache size: 138, Positive conditional cache size: 0, Positive unconditional cache size: 138, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 146]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 175 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 30.9s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 21.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1119 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1119 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 381 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6086 IncrementalHoareTripleChecker+Invalid, 6467 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 381 mSolverCounterUnsat, 9 mSDtfsCounter, 6086 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 206 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4520occurred in iteration=18, InterpolantAutomatonStates: 190, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 646 NumberOfCodeBlocks, 646 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 627 ConstructedInterpolants, 0 QuantifiedInterpolants, 2542 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 08:27:55,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...