/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 23:12:01,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 23:12:01,549 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 [2023-08-23 23:12:01,553 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 23:12:01,553 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 23:12:01,574 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 23:12:01,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 23:12:01,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 23:12:01,576 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 23:12:01,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 23:12:01,577 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 23:12:01,577 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 23:12:01,577 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 23:12:01,578 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 23:12:01,578 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 23:12:01,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 23:12:01,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 23:12:01,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 23:12:01,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 23:12:01,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 23:12:01,580 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 23:12:01,581 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 23:12:01,581 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 23:12:01,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 23:12:01,582 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 23:12:01,582 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 23:12:01,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 23:12:01,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:12:01,583 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 23:12:01,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 23:12:01,584 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 23:12:01,584 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 23:12:01,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 23:12:01,585 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 23:12:01,585 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 23:12:01,585 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 23:12:01,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 23:12:01,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 23:12:01,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 23:12:01,939 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 23:12:01,940 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 23:12:01,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-08-23 23:12:03,106 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 23:12:03,334 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 23:12:03,335 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-08-23 23:12:03,350 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d7cd6795/9869bf6d997b41bb831e7d29c669b0e3/FLAG74bbeb38a [2023-08-23 23:12:03,365 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d7cd6795/9869bf6d997b41bb831e7d29c669b0e3 [2023-08-23 23:12:03,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 23:12:03,369 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 23:12:03,375 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 23:12:03,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 23:12:03,378 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 23:12:03,379 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:12:03" (1/1) ... [2023-08-23 23:12:03,379 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3416196f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:03, skipping insertion in model container [2023-08-23 23:12:03,380 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:12:03" (1/1) ... [2023-08-23 23:12:03,435 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 23:12:03,605 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i[947,960] [2023-08-23 23:12:03,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:12:03,895 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 23:12:03,906 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i[947,960] [2023-08-23 23:12:03,927 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:12:03,929 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:12:03,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:12:04,038 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:12:04,038 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:12:04,044 INFO L206 MainTranslator]: Completed translation [2023-08-23 23:12:04,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:04 WrapperNode [2023-08-23 23:12:04,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 23:12:04,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 23:12:04,046 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 23:12:04,046 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 23:12:04,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:04" (1/1) ... [2023-08-23 23:12:04,086 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:04" (1/1) ... [2023-08-23 23:12:04,127 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 173 [2023-08-23 23:12:04,127 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 23:12:04,128 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 23:12:04,128 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 23:12:04,128 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 23:12:04,136 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:04" (1/1) ... [2023-08-23 23:12:04,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:04" (1/1) ... [2023-08-23 23:12:04,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:04" (1/1) ... [2023-08-23 23:12:04,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:04" (1/1) ... [2023-08-23 23:12:04,163 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:04" (1/1) ... [2023-08-23 23:12:04,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:04" (1/1) ... [2023-08-23 23:12:04,184 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:04" (1/1) ... [2023-08-23 23:12:04,189 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:04" (1/1) ... [2023-08-23 23:12:04,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 23:12:04,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 23:12:04,194 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 23:12:04,194 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 23:12:04,195 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:04" (1/1) ... [2023-08-23 23:12:04,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:12:04,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 23:12:04,238 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) [2023-08-23 23:12:04,257 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 [2023-08-23 23:12:04,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 23:12:04,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-23 23:12:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 23:12:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 23:12:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 23:12:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-23 23:12:04,286 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-23 23:12:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-23 23:12:04,286 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-23 23:12:04,287 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-23 23:12:04,287 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-23 23:12:04,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 23:12:04,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-23 23:12:04,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 23:12:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 23:12:04,290 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-23 23:12:04,441 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 23:12:04,442 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 23:12:04,756 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 23:12:04,985 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 23:12:04,985 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-23 23:12:04,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:12:04 BoogieIcfgContainer [2023-08-23 23:12:04,988 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 23:12:04,992 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 23:12:04,992 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 23:12:04,995 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 23:12:04,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 11:12:03" (1/3) ... [2023-08-23 23:12:04,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48aff53f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:12:04, skipping insertion in model container [2023-08-23 23:12:04,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:04" (2/3) ... [2023-08-23 23:12:04,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48aff53f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:12:04, skipping insertion in model container [2023-08-23 23:12:04,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:12:04" (3/3) ... [2023-08-23 23:12:04,997 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2023-08-23 23:12:05,012 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 23:12:05,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-23 23:12:05,013 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 23:12:05,073 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-23 23:12:05,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 112 transitions, 239 flow [2023-08-23 23:12:05,175 INFO L124 PetriNetUnfolderBase]: 2/109 cut-off events. [2023-08-23 23:12:05,175 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:12:05,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-08-23 23:12:05,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 112 transitions, 239 flow [2023-08-23 23:12:05,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 109 transitions, 227 flow [2023-08-23 23:12:05,187 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:12:05,197 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 109 transitions, 227 flow [2023-08-23 23:12:05,200 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 109 transitions, 227 flow [2023-08-23 23:12:05,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 109 transitions, 227 flow [2023-08-23 23:12:05,227 INFO L124 PetriNetUnfolderBase]: 2/109 cut-off events. [2023-08-23 23:12:05,227 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:12:05,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-08-23 23:12:05,230 INFO L119 LiptonReduction]: Number of co-enabled transitions 2202 [2023-08-23 23:12:09,509 INFO L134 LiptonReduction]: Checked pairs total: 6197 [2023-08-23 23:12:09,509 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-23 23:12:09,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:12:09,536 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;@74c98f40, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:12:09,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-23 23:12:09,542 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:12:09,542 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-23 23:12:09,542 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:12:09,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:09,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:09,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:09,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:09,548 INFO L85 PathProgramCache]: Analyzing trace with hash 243412563, now seen corresponding path program 1 times [2023-08-23 23:12:09,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:09,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088512837] [2023-08-23 23:12:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:09,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:09,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:09,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088512837] [2023-08-23 23:12:09,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088512837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:09,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:09,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-23 23:12:09,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603928147] [2023-08-23 23:12:09,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:09,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:12:09,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:09,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:12:09,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:12:09,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-08-23 23:12:09,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:09,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:09,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-08-23 23:12:09,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:10,592 INFO L124 PetriNetUnfolderBase]: 2147/3120 cut-off events. [2023-08-23 23:12:10,592 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-23 23:12:10,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6315 conditions, 3120 events. 2147/3120 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14344 event pairs, 322 based on Foata normal form. 0/2939 useless extension candidates. Maximal degree in co-relation 6304. Up to 2576 conditions per place. [2023-08-23 23:12:10,610 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 33 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2023-08-23 23:12:10,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 159 flow [2023-08-23 23:12:10,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:12:10,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:12:10,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-08-23 23:12:10,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5129449838187702 [2023-08-23 23:12:10,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-08-23 23:12:10,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-08-23 23:12:10,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:10,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-08-23 23:12:10,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:10,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:10,634 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:10,635 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 61 flow. Second operand 3 states and 317 transitions. [2023-08-23 23:12:10,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 159 flow [2023-08-23 23:12:10,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-23 23:12:10,639 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 58 flow [2023-08-23 23:12:10,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-08-23 23:12:10,644 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-08-23 23:12:10,644 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 58 flow [2023-08-23 23:12:10,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:10,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:10,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:10,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 23:12:10,645 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:10,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:10,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1991260440, now seen corresponding path program 1 times [2023-08-23 23:12:10,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:10,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890552212] [2023-08-23 23:12:10,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:10,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:10,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:10,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:10,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890552212] [2023-08-23 23:12:10,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890552212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:10,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:10,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-23 23:12:10,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180624204] [2023-08-23 23:12:10,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:10,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:12:10,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:10,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:12:10,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:12:10,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-08-23 23:12:10,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:10,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:10,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-08-23 23:12:10,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:11,301 INFO L124 PetriNetUnfolderBase]: 1466/2169 cut-off events. [2023-08-23 23:12:11,302 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-08-23 23:12:11,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4502 conditions, 2169 events. 1466/2169 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9222 event pairs, 698 based on Foata normal form. 90/2258 useless extension candidates. Maximal degree in co-relation 4492. Up to 1189 conditions per place. [2023-08-23 23:12:11,315 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 32 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-08-23 23:12:11,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 148 flow [2023-08-23 23:12:11,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:12:11,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:12:11,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-08-23 23:12:11,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080906148867314 [2023-08-23 23:12:11,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-08-23 23:12:11,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-08-23 23:12:11,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:11,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-08-23 23:12:11,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:11,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:11,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:11,325 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 58 flow. Second operand 3 states and 314 transitions. [2023-08-23 23:12:11,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 148 flow [2023-08-23 23:12:11,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 23:12:11,329 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 62 flow [2023-08-23 23:12:11,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-08-23 23:12:11,330 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-08-23 23:12:11,330 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 62 flow [2023-08-23 23:12:11,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:11,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:11,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:11,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 23:12:11,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:11,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:11,331 INFO L85 PathProgramCache]: Analyzing trace with hash -490588097, now seen corresponding path program 1 times [2023-08-23 23:12:11,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:11,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428478028] [2023-08-23 23:12:11,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:11,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:12,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:12,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428478028] [2023-08-23 23:12:12,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428478028] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:12,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:12,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-23 23:12:12,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067507462] [2023-08-23 23:12:12,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:12,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-23 23:12:12,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:12,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-23 23:12:12,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-23 23:12:12,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-08-23 23:12:12,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:12,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:12,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-08-23 23:12:12,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:13,089 INFO L124 PetriNetUnfolderBase]: 2979/4408 cut-off events. [2023-08-23 23:12:13,089 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2023-08-23 23:12:13,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9551 conditions, 4408 events. 2979/4408 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 22157 event pairs, 311 based on Foata normal form. 30/4437 useless extension candidates. Maximal degree in co-relation 9540. Up to 1595 conditions per place. [2023-08-23 23:12:13,113 INFO L140 encePairwiseOnDemand]: 193/206 looper letters, 63 selfloop transitions, 23 changer transitions 0/87 dead transitions. [2023-08-23 23:12:13,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 87 transitions, 368 flow [2023-08-23 23:12:13,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:12:13,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:12:13,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 689 transitions. [2023-08-23 23:12:13,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4778085991678225 [2023-08-23 23:12:13,116 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 689 transitions. [2023-08-23 23:12:13,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 689 transitions. [2023-08-23 23:12:13,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:13,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 689 transitions. [2023-08-23 23:12:13,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.42857142857143) internal successors, (689), 7 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:13,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:13,121 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:13,122 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 62 flow. Second operand 7 states and 689 transitions. [2023-08-23 23:12:13,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 87 transitions, 368 flow [2023-08-23 23:12:13,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 87 transitions, 360 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 23:12:13,138 INFO L231 Difference]: Finished difference. Result has 42 places, 45 transitions, 225 flow [2023-08-23 23:12:13,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=225, PETRI_PLACES=42, PETRI_TRANSITIONS=45} [2023-08-23 23:12:13,138 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-08-23 23:12:13,139 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 45 transitions, 225 flow [2023-08-23 23:12:13,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:13,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:13,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:13,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 23:12:13,140 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:13,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:13,140 INFO L85 PathProgramCache]: Analyzing trace with hash -493473887, now seen corresponding path program 2 times [2023-08-23 23:12:13,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:13,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215323171] [2023-08-23 23:12:13,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:13,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:14,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:14,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:14,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215323171] [2023-08-23 23:12:14,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215323171] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:14,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:14,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-23 23:12:14,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233981662] [2023-08-23 23:12:14,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:14,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-23 23:12:14,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:14,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-23 23:12:14,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-23 23:12:14,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2023-08-23 23:12:14,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 45 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:14,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:14,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2023-08-23 23:12:14,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:14,821 INFO L124 PetriNetUnfolderBase]: 3207/4755 cut-off events. [2023-08-23 23:12:14,821 INFO L125 PetriNetUnfolderBase]: For 5345/5345 co-relation queries the response was YES. [2023-08-23 23:12:14,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16189 conditions, 4755 events. 3207/4755 cut-off events. For 5345/5345 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 24337 event pairs, 1323 based on Foata normal form. 30/4785 useless extension candidates. Maximal degree in co-relation 16174. Up to 4360 conditions per place. [2023-08-23 23:12:14,908 INFO L140 encePairwiseOnDemand]: 199/206 looper letters, 71 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2023-08-23 23:12:14,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 83 transitions, 568 flow [2023-08-23 23:12:14,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:12:14,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:12:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 477 transitions. [2023-08-23 23:12:14,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46310679611650485 [2023-08-23 23:12:14,911 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 477 transitions. [2023-08-23 23:12:14,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 477 transitions. [2023-08-23 23:12:14,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:14,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 477 transitions. [2023-08-23 23:12:14,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:14,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:14,915 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:14,915 INFO L175 Difference]: Start difference. First operand has 42 places, 45 transitions, 225 flow. Second operand 5 states and 477 transitions. [2023-08-23 23:12:14,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 83 transitions, 568 flow [2023-08-23 23:12:14,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 83 transitions, 565 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:12:14,922 INFO L231 Difference]: Finished difference. Result has 48 places, 55 transitions, 336 flow [2023-08-23 23:12:14,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=48, PETRI_TRANSITIONS=55} [2023-08-23 23:12:14,924 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2023-08-23 23:12:14,924 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 55 transitions, 336 flow [2023-08-23 23:12:14,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:14,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:14,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:14,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-23 23:12:14,925 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:14,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:14,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1843269276, now seen corresponding path program 1 times [2023-08-23 23:12:14,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:14,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551712358] [2023-08-23 23:12:14,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:14,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:15,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:15,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:15,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551712358] [2023-08-23 23:12:15,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551712358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:15,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:15,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-23 23:12:15,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450399141] [2023-08-23 23:12:15,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:15,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-23 23:12:15,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:15,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-23 23:12:15,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-23 23:12:15,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-08-23 23:12:15,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 55 transitions, 336 flow. Second operand has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:15,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:15,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-08-23 23:12:15,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:16,949 INFO L124 PetriNetUnfolderBase]: 4058/6015 cut-off events. [2023-08-23 23:12:16,949 INFO L125 PetriNetUnfolderBase]: For 9729/9729 co-relation queries the response was YES. [2023-08-23 23:12:16,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22113 conditions, 6015 events. 4058/6015 cut-off events. For 9729/9729 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 32050 event pairs, 896 based on Foata normal form. 72/6086 useless extension candidates. Maximal degree in co-relation 22094. Up to 4374 conditions per place. [2023-08-23 23:12:16,996 INFO L140 encePairwiseOnDemand]: 193/206 looper letters, 70 selfloop transitions, 16 changer transitions 26/113 dead transitions. [2023-08-23 23:12:16,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 113 transitions, 852 flow [2023-08-23 23:12:16,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:12:16,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:12:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 684 transitions. [2023-08-23 23:12:16,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47434119278779474 [2023-08-23 23:12:16,999 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 684 transitions. [2023-08-23 23:12:16,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 684 transitions. [2023-08-23 23:12:17,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:17,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 684 transitions. [2023-08-23 23:12:17,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.71428571428571) internal successors, (684), 7 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:17,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:17,005 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:17,005 INFO L175 Difference]: Start difference. First operand has 48 places, 55 transitions, 336 flow. Second operand 7 states and 684 transitions. [2023-08-23 23:12:17,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 113 transitions, 852 flow [2023-08-23 23:12:17,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 113 transitions, 838 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-23 23:12:17,022 INFO L231 Difference]: Finished difference. Result has 59 places, 67 transitions, 504 flow [2023-08-23 23:12:17,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=504, PETRI_PLACES=59, PETRI_TRANSITIONS=67} [2023-08-23 23:12:17,024 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-08-23 23:12:17,025 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 67 transitions, 504 flow [2023-08-23 23:12:17,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:17,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:17,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:17,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-23 23:12:17,026 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:17,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:17,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1926386166, now seen corresponding path program 2 times [2023-08-23 23:12:17,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:17,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219132543] [2023-08-23 23:12:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:17,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:18,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:18,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:18,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219132543] [2023-08-23 23:12:18,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219132543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:18,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:18,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-23 23:12:18,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805356387] [2023-08-23 23:12:18,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:18,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-23 23:12:18,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:18,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-23 23:12:18,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-23 23:12:18,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-23 23:12:18,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 67 transitions, 504 flow. Second operand has 8 states, 8 states have (on average 84.625) internal successors, (677), 8 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:18,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:18,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-23 23:12:18,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:19,451 INFO L124 PetriNetUnfolderBase]: 4339/6521 cut-off events. [2023-08-23 23:12:19,451 INFO L125 PetriNetUnfolderBase]: For 20135/20135 co-relation queries the response was YES. [2023-08-23 23:12:19,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27856 conditions, 6521 events. 4339/6521 cut-off events. For 20135/20135 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 35695 event pairs, 583 based on Foata normal form. 30/6549 useless extension candidates. Maximal degree in co-relation 27830. Up to 4593 conditions per place. [2023-08-23 23:12:19,513 INFO L140 encePairwiseOnDemand]: 193/206 looper letters, 92 selfloop transitions, 47 changer transitions 0/140 dead transitions. [2023-08-23 23:12:19,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 140 transitions, 1282 flow [2023-08-23 23:12:19,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-23 23:12:19,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-23 23:12:19,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 746 transitions. [2023-08-23 23:12:19,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4526699029126214 [2023-08-23 23:12:19,517 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 746 transitions. [2023-08-23 23:12:19,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 746 transitions. [2023-08-23 23:12:19,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:19,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 746 transitions. [2023-08-23 23:12:19,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.25) internal successors, (746), 8 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:19,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:19,522 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:19,522 INFO L175 Difference]: Start difference. First operand has 59 places, 67 transitions, 504 flow. Second operand 8 states and 746 transitions. [2023-08-23 23:12:19,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 140 transitions, 1282 flow [2023-08-23 23:12:19,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 140 transitions, 1194 flow, removed 40 selfloop flow, removed 3 redundant places. [2023-08-23 23:12:19,665 INFO L231 Difference]: Finished difference. Result has 63 places, 107 transitions, 963 flow [2023-08-23 23:12:19,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=963, PETRI_PLACES=63, PETRI_TRANSITIONS=107} [2023-08-23 23:12:19,667 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2023-08-23 23:12:19,667 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 107 transitions, 963 flow [2023-08-23 23:12:19,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 84.625) internal successors, (677), 8 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:19,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:19,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:19,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-23 23:12:19,668 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:19,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:19,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1882132116, now seen corresponding path program 3 times [2023-08-23 23:12:19,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:19,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078603430] [2023-08-23 23:12:19,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:19,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:19,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:19,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:19,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078603430] [2023-08-23 23:12:19,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078603430] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:19,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:19,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:12:19,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164102832] [2023-08-23 23:12:19,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:19,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:12:19,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:19,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:12:19,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:12:19,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-08-23 23:12:19,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 107 transitions, 963 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:19,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:19,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-08-23 23:12:19,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:20,476 INFO L124 PetriNetUnfolderBase]: 3082/4936 cut-off events. [2023-08-23 23:12:20,476 INFO L125 PetriNetUnfolderBase]: For 29205/29205 co-relation queries the response was YES. [2023-08-23 23:12:20,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23448 conditions, 4936 events. 3082/4936 cut-off events. For 29205/29205 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 29043 event pairs, 542 based on Foata normal form. 530/5464 useless extension candidates. Maximal degree in co-relation 23421. Up to 2125 conditions per place. [2023-08-23 23:12:20,502 INFO L140 encePairwiseOnDemand]: 200/206 looper letters, 226 selfloop transitions, 5 changer transitions 1/233 dead transitions. [2023-08-23 23:12:20,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 233 transitions, 2576 flow [2023-08-23 23:12:20,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:12:20,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:12:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 406 transitions. [2023-08-23 23:12:20,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49271844660194175 [2023-08-23 23:12:20,504 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 406 transitions. [2023-08-23 23:12:20,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 406 transitions. [2023-08-23 23:12:20,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:20,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 406 transitions. [2023-08-23 23:12:20,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:20,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:20,508 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:20,508 INFO L175 Difference]: Start difference. First operand has 63 places, 107 transitions, 963 flow. Second operand 4 states and 406 transitions. [2023-08-23 23:12:20,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 233 transitions, 2576 flow [2023-08-23 23:12:20,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 233 transitions, 2405 flow, removed 77 selfloop flow, removed 2 redundant places. [2023-08-23 23:12:20,560 INFO L231 Difference]: Finished difference. Result has 66 places, 109 transitions, 911 flow [2023-08-23 23:12:20,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=911, PETRI_PLACES=66, PETRI_TRANSITIONS=109} [2023-08-23 23:12:20,562 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2023-08-23 23:12:20,562 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 109 transitions, 911 flow [2023-08-23 23:12:20,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:20,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:20,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:20,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-23 23:12:20,563 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:20,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:20,563 INFO L85 PathProgramCache]: Analyzing trace with hash -374592395, now seen corresponding path program 1 times [2023-08-23 23:12:20,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:20,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994469916] [2023-08-23 23:12:20,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:20,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:20,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:20,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:20,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994469916] [2023-08-23 23:12:20,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994469916] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:20,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:20,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:12:20,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269954934] [2023-08-23 23:12:20,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:20,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:12:20,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:20,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:12:20,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:12:20,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-08-23 23:12:20,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 109 transitions, 911 flow. Second operand has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:20,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:20,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-08-23 23:12:20,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:21,194 INFO L124 PetriNetUnfolderBase]: 1387/2368 cut-off events. [2023-08-23 23:12:21,194 INFO L125 PetriNetUnfolderBase]: For 15515/15515 co-relation queries the response was YES. [2023-08-23 23:12:21,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11787 conditions, 2368 events. 1387/2368 cut-off events. For 15515/15515 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 13036 event pairs, 155 based on Foata normal form. 239/2605 useless extension candidates. Maximal degree in co-relation 11758. Up to 1100 conditions per place. [2023-08-23 23:12:21,205 INFO L140 encePairwiseOnDemand]: 200/206 looper letters, 205 selfloop transitions, 8 changer transitions 1/215 dead transitions. [2023-08-23 23:12:21,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 215 transitions, 2229 flow [2023-08-23 23:12:21,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:12:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:12:21,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 509 transitions. [2023-08-23 23:12:21,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4941747572815534 [2023-08-23 23:12:21,208 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 509 transitions. [2023-08-23 23:12:21,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 509 transitions. [2023-08-23 23:12:21,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:21,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 509 transitions. [2023-08-23 23:12:21,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:21,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:21,212 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:21,212 INFO L175 Difference]: Start difference. First operand has 66 places, 109 transitions, 911 flow. Second operand 5 states and 509 transitions. [2023-08-23 23:12:21,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 215 transitions, 2229 flow [2023-08-23 23:12:21,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 215 transitions, 2179 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-23 23:12:21,232 INFO L231 Difference]: Finished difference. Result has 69 places, 105 transitions, 877 flow [2023-08-23 23:12:21,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=877, PETRI_PLACES=69, PETRI_TRANSITIONS=105} [2023-08-23 23:12:21,234 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-08-23 23:12:21,234 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 105 transitions, 877 flow [2023-08-23 23:12:21,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:21,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:21,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:21,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-23 23:12:21,236 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:21,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:21,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1199572637, now seen corresponding path program 1 times [2023-08-23 23:12:21,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:21,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896446399] [2023-08-23 23:12:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:21,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:22,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:22,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:22,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896446399] [2023-08-23 23:12:22,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896446399] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:22,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:22,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-23 23:12:22,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875881998] [2023-08-23 23:12:22,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:22,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-23 23:12:22,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:22,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-23 23:12:22,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-23 23:12:22,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-23 23:12:22,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 105 transitions, 877 flow. Second operand has 8 states, 8 states have (on average 85.25) internal successors, (682), 8 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:22,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:22,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-23 23:12:22,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:23,045 INFO L124 PetriNetUnfolderBase]: 1137/2014 cut-off events. [2023-08-23 23:12:23,045 INFO L125 PetriNetUnfolderBase]: For 9471/9471 co-relation queries the response was YES. [2023-08-23 23:12:23,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10503 conditions, 2014 events. 1137/2014 cut-off events. For 9471/9471 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11048 event pairs, 98 based on Foata normal form. 13/2027 useless extension candidates. Maximal degree in co-relation 10473. Up to 1347 conditions per place. [2023-08-23 23:12:23,062 INFO L140 encePairwiseOnDemand]: 194/206 looper letters, 109 selfloop transitions, 55 changer transitions 21/186 dead transitions. [2023-08-23 23:12:23,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 186 transitions, 1911 flow [2023-08-23 23:12:23,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-23 23:12:23,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-23 23:12:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 759 transitions. [2023-08-23 23:12:23,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46055825242718446 [2023-08-23 23:12:23,066 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 759 transitions. [2023-08-23 23:12:23,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 759 transitions. [2023-08-23 23:12:23,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:23,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 759 transitions. [2023-08-23 23:12:23,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 94.875) internal successors, (759), 8 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:23,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:23,072 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:23,073 INFO L175 Difference]: Start difference. First operand has 69 places, 105 transitions, 877 flow. Second operand 8 states and 759 transitions. [2023-08-23 23:12:23,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 186 transitions, 1911 flow [2023-08-23 23:12:23,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 186 transitions, 1801 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-08-23 23:12:23,098 INFO L231 Difference]: Finished difference. Result has 75 places, 130 transitions, 1283 flow [2023-08-23 23:12:23,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1283, PETRI_PLACES=75, PETRI_TRANSITIONS=130} [2023-08-23 23:12:23,099 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 39 predicate places. [2023-08-23 23:12:23,100 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 130 transitions, 1283 flow [2023-08-23 23:12:23,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.25) internal successors, (682), 8 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:23,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:23,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:23,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-23 23:12:23,101 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:23,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:23,101 INFO L85 PathProgramCache]: Analyzing trace with hash -866549243, now seen corresponding path program 2 times [2023-08-23 23:12:23,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:23,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956032844] [2023-08-23 23:12:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:23,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:25,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:25,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956032844] [2023-08-23 23:12:25,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956032844] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:25,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:25,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-23 23:12:25,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120617993] [2023-08-23 23:12:25,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:25,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-23 23:12:25,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:25,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-23 23:12:25,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-23 23:12:25,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 206 [2023-08-23 23:12:25,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 130 transitions, 1283 flow. Second operand has 11 states, 11 states have (on average 82.63636363636364) internal successors, (909), 11 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:25,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:25,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 206 [2023-08-23 23:12:25,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:26,134 INFO L124 PetriNetUnfolderBase]: 1476/2651 cut-off events. [2023-08-23 23:12:26,134 INFO L125 PetriNetUnfolderBase]: For 14509/14509 co-relation queries the response was YES. [2023-08-23 23:12:26,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14547 conditions, 2651 events. 1476/2651 cut-off events. For 14509/14509 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 15803 event pairs, 104 based on Foata normal form. 9/2660 useless extension candidates. Maximal degree in co-relation 14515. Up to 1638 conditions per place. [2023-08-23 23:12:26,152 INFO L140 encePairwiseOnDemand]: 194/206 looper letters, 141 selfloop transitions, 69 changer transitions 22/233 dead transitions. [2023-08-23 23:12:26,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 233 transitions, 2563 flow [2023-08-23 23:12:26,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-23 23:12:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-23 23:12:26,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 748 transitions. [2023-08-23 23:12:26,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4538834951456311 [2023-08-23 23:12:26,156 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 748 transitions. [2023-08-23 23:12:26,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 748 transitions. [2023-08-23 23:12:26,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:26,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 748 transitions. [2023-08-23 23:12:26,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.5) internal successors, (748), 8 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:26,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:26,160 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:26,161 INFO L175 Difference]: Start difference. First operand has 75 places, 130 transitions, 1283 flow. Second operand 8 states and 748 transitions. [2023-08-23 23:12:26,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 233 transitions, 2563 flow [2023-08-23 23:12:26,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 233 transitions, 2537 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:12:26,192 INFO L231 Difference]: Finished difference. Result has 86 places, 169 transitions, 1934 flow [2023-08-23 23:12:26,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1934, PETRI_PLACES=86, PETRI_TRANSITIONS=169} [2023-08-23 23:12:26,193 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 50 predicate places. [2023-08-23 23:12:26,194 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 169 transitions, 1934 flow [2023-08-23 23:12:26,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 82.63636363636364) internal successors, (909), 11 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:26,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:26,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:26,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-23 23:12:26,194 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:26,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:26,195 INFO L85 PathProgramCache]: Analyzing trace with hash 599341699, now seen corresponding path program 3 times [2023-08-23 23:12:26,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:26,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457263899] [2023-08-23 23:12:26,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:26,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:27,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:27,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:27,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457263899] [2023-08-23 23:12:27,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457263899] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:27,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:27,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-23 23:12:27,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284656111] [2023-08-23 23:12:27,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:27,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-23 23:12:27,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:27,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-23 23:12:27,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-23 23:12:27,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2023-08-23 23:12:27,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 169 transitions, 1934 flow. Second operand has 8 states, 8 states have (on average 87.25) internal successors, (698), 8 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:27,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:27,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2023-08-23 23:12:27,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:28,037 INFO L124 PetriNetUnfolderBase]: 1611/2912 cut-off events. [2023-08-23 23:12:28,038 INFO L125 PetriNetUnfolderBase]: For 21053/21053 co-relation queries the response was YES. [2023-08-23 23:12:28,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17783 conditions, 2912 events. 1611/2912 cut-off events. For 21053/21053 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17842 event pairs, 252 based on Foata normal form. 13/2923 useless extension candidates. Maximal degree in co-relation 17744. Up to 1086 conditions per place. [2023-08-23 23:12:28,060 INFO L140 encePairwiseOnDemand]: 194/206 looper letters, 140 selfloop transitions, 40 changer transitions 67/248 dead transitions. [2023-08-23 23:12:28,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 248 transitions, 3105 flow [2023-08-23 23:12:28,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:12:28,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:12:28,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 683 transitions. [2023-08-23 23:12:28,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4736477115117892 [2023-08-23 23:12:28,063 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 683 transitions. [2023-08-23 23:12:28,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 683 transitions. [2023-08-23 23:12:28,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:28,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 683 transitions. [2023-08-23 23:12:28,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.57142857142857) internal successors, (683), 7 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:28,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:28,068 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:28,068 INFO L175 Difference]: Start difference. First operand has 86 places, 169 transitions, 1934 flow. Second operand 7 states and 683 transitions. [2023-08-23 23:12:28,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 248 transitions, 3105 flow [2023-08-23 23:12:28,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 248 transitions, 3071 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-08-23 23:12:28,121 INFO L231 Difference]: Finished difference. Result has 94 places, 129 transitions, 1505 flow [2023-08-23 23:12:28,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1505, PETRI_PLACES=94, PETRI_TRANSITIONS=129} [2023-08-23 23:12:28,122 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 58 predicate places. [2023-08-23 23:12:28,122 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 129 transitions, 1505 flow [2023-08-23 23:12:28,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.25) internal successors, (698), 8 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:28,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:28,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:28,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-23 23:12:28,122 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:28,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:28,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1353506417, now seen corresponding path program 4 times [2023-08-23 23:12:28,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:28,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511203740] [2023-08-23 23:12:28,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:28,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:29,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:29,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:29,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511203740] [2023-08-23 23:12:29,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511203740] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:29,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:29,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-23 23:12:29,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062430507] [2023-08-23 23:12:29,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:29,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-23 23:12:29,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:29,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-23 23:12:29,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-23 23:12:29,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 206 [2023-08-23 23:12:29,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 129 transitions, 1505 flow. Second operand has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:29,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:29,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 206 [2023-08-23 23:12:29,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:29,704 INFO L124 PetriNetUnfolderBase]: 1339/2509 cut-off events. [2023-08-23 23:12:29,705 INFO L125 PetriNetUnfolderBase]: For 19547/19547 co-relation queries the response was YES. [2023-08-23 23:12:29,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15409 conditions, 2509 events. 1339/2509 cut-off events. For 19547/19547 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 15464 event pairs, 212 based on Foata normal form. 11/2518 useless extension candidates. Maximal degree in co-relation 15366. Up to 1338 conditions per place. [2023-08-23 23:12:29,724 INFO L140 encePairwiseOnDemand]: 195/206 looper letters, 119 selfloop transitions, 63 changer transitions 21/204 dead transitions. [2023-08-23 23:12:29,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 204 transitions, 2664 flow [2023-08-23 23:12:29,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-23 23:12:29,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-23 23:12:29,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 578 transitions. [2023-08-23 23:12:29,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46763754045307443 [2023-08-23 23:12:29,727 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 578 transitions. [2023-08-23 23:12:29,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 578 transitions. [2023-08-23 23:12:29,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:29,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 578 transitions. [2023-08-23 23:12:29,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:29,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:29,730 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:29,731 INFO L175 Difference]: Start difference. First operand has 94 places, 129 transitions, 1505 flow. Second operand 6 states and 578 transitions. [2023-08-23 23:12:29,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 204 transitions, 2664 flow [2023-08-23 23:12:29,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 204 transitions, 2517 flow, removed 34 selfloop flow, removed 6 redundant places. [2023-08-23 23:12:29,783 INFO L231 Difference]: Finished difference. Result has 95 places, 154 transitions, 1960 flow [2023-08-23 23:12:29,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1960, PETRI_PLACES=95, PETRI_TRANSITIONS=154} [2023-08-23 23:12:29,784 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 59 predicate places. [2023-08-23 23:12:29,784 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 154 transitions, 1960 flow [2023-08-23 23:12:29,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:29,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:29,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:29,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-23 23:12:29,785 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:29,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:29,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1399488825, now seen corresponding path program 5 times [2023-08-23 23:12:29,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:29,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831353331] [2023-08-23 23:12:29,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:29,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:30,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:30,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:30,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831353331] [2023-08-23 23:12:30,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831353331] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:30,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:30,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-23 23:12:30,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412152682] [2023-08-23 23:12:30,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:30,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-23 23:12:30,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:30,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-23 23:12:30,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-23 23:12:30,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-23 23:12:30,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 154 transitions, 1960 flow. Second operand has 10 states, 10 states have (on average 84.8) internal successors, (848), 10 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:30,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:30,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-23 23:12:30,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:31,656 INFO L124 PetriNetUnfolderBase]: 1393/2631 cut-off events. [2023-08-23 23:12:31,656 INFO L125 PetriNetUnfolderBase]: For 23021/23021 co-relation queries the response was YES. [2023-08-23 23:12:31,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16750 conditions, 2631 events. 1393/2631 cut-off events. For 23021/23021 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 16502 event pairs, 124 based on Foata normal form. 9/2640 useless extension candidates. Maximal degree in co-relation 16706. Up to 1319 conditions per place. [2023-08-23 23:12:31,678 INFO L140 encePairwiseOnDemand]: 196/206 looper letters, 125 selfloop transitions, 70 changer transitions 16/212 dead transitions. [2023-08-23 23:12:31,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 212 transitions, 2862 flow [2023-08-23 23:12:31,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:12:31,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:12:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 663 transitions. [2023-08-23 23:12:31,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45977808599167824 [2023-08-23 23:12:31,681 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 663 transitions. [2023-08-23 23:12:31,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 663 transitions. [2023-08-23 23:12:31,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:31,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 663 transitions. [2023-08-23 23:12:31,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.71428571428571) internal successors, (663), 7 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:31,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:31,685 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:31,686 INFO L175 Difference]: Start difference. First operand has 95 places, 154 transitions, 1960 flow. Second operand 7 states and 663 transitions. [2023-08-23 23:12:31,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 212 transitions, 2862 flow [2023-08-23 23:12:31,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 212 transitions, 2826 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-08-23 23:12:31,751 INFO L231 Difference]: Finished difference. Result has 101 places, 160 transitions, 2210 flow [2023-08-23 23:12:31,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2210, PETRI_PLACES=101, PETRI_TRANSITIONS=160} [2023-08-23 23:12:31,752 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 65 predicate places. [2023-08-23 23:12:31,752 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 160 transitions, 2210 flow [2023-08-23 23:12:31,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.8) internal successors, (848), 10 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:31,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:31,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:31,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-23 23:12:31,753 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:31,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:31,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1264858163, now seen corresponding path program 6 times [2023-08-23 23:12:31,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:31,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365016113] [2023-08-23 23:12:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:31,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:32,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:32,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365016113] [2023-08-23 23:12:32,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365016113] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:32,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:32,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-23 23:12:32,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397426473] [2023-08-23 23:12:32,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:32,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-23 23:12:32,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:32,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-23 23:12:32,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-23 23:12:32,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-23 23:12:32,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 160 transitions, 2210 flow. Second operand has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:32,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:32,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-23 23:12:32,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:33,648 INFO L124 PetriNetUnfolderBase]: 2056/3907 cut-off events. [2023-08-23 23:12:33,648 INFO L125 PetriNetUnfolderBase]: For 41608/41608 co-relation queries the response was YES. [2023-08-23 23:12:33,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26435 conditions, 3907 events. 2056/3907 cut-off events. For 41608/41608 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 27131 event pairs, 232 based on Foata normal form. 31/3937 useless extension candidates. Maximal degree in co-relation 26389. Up to 1715 conditions per place. [2023-08-23 23:12:33,672 INFO L140 encePairwiseOnDemand]: 194/206 looper letters, 166 selfloop transitions, 92 changer transitions 44/303 dead transitions. [2023-08-23 23:12:33,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 303 transitions, 4598 flow [2023-08-23 23:12:33,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-23 23:12:33,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-23 23:12:33,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 765 transitions. [2023-08-23 23:12:33,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641990291262136 [2023-08-23 23:12:33,676 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 765 transitions. [2023-08-23 23:12:33,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 765 transitions. [2023-08-23 23:12:33,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:33,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 765 transitions. [2023-08-23 23:12:33,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.625) internal successors, (765), 8 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:33,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:33,681 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:33,681 INFO L175 Difference]: Start difference. First operand has 101 places, 160 transitions, 2210 flow. Second operand 8 states and 765 transitions. [2023-08-23 23:12:33,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 303 transitions, 4598 flow [2023-08-23 23:12:33,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 303 transitions, 4472 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-23 23:12:33,785 INFO L231 Difference]: Finished difference. Result has 108 places, 207 transitions, 3286 flow [2023-08-23 23:12:33,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2115, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3286, PETRI_PLACES=108, PETRI_TRANSITIONS=207} [2023-08-23 23:12:33,786 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 72 predicate places. [2023-08-23 23:12:33,786 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 207 transitions, 3286 flow [2023-08-23 23:12:33,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:33,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:33,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:33,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-23 23:12:33,787 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:33,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:33,787 INFO L85 PathProgramCache]: Analyzing trace with hash 904015331, now seen corresponding path program 7 times [2023-08-23 23:12:33,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:33,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123048434] [2023-08-23 23:12:33,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:33,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:33,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:33,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123048434] [2023-08-23 23:12:33,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123048434] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:33,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:33,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-23 23:12:33,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171323465] [2023-08-23 23:12:33,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:33,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-23 23:12:33,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:33,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-23 23:12:33,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-23 23:12:33,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-08-23 23:12:33,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 207 transitions, 3286 flow. Second operand has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:33,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:33,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-08-23 23:12:33,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:34,599 INFO L124 PetriNetUnfolderBase]: 1729/3326 cut-off events. [2023-08-23 23:12:34,600 INFO L125 PetriNetUnfolderBase]: For 52353/52353 co-relation queries the response was YES. [2023-08-23 23:12:34,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24168 conditions, 3326 events. 1729/3326 cut-off events. For 52353/52353 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 23435 event pairs, 151 based on Foata normal form. 154/3478 useless extension candidates. Maximal degree in co-relation 24118. Up to 1300 conditions per place. [2023-08-23 23:12:34,621 INFO L140 encePairwiseOnDemand]: 200/206 looper letters, 351 selfloop transitions, 11 changer transitions 55/418 dead transitions. [2023-08-23 23:12:34,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 418 transitions, 7796 flow [2023-08-23 23:12:34,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-23 23:12:34,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-23 23:12:34,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 582 transitions. [2023-08-23 23:12:34,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470873786407767 [2023-08-23 23:12:34,624 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 582 transitions. [2023-08-23 23:12:34,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 582 transitions. [2023-08-23 23:12:34,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:34,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 582 transitions. [2023-08-23 23:12:34,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:34,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:34,628 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:34,628 INFO L175 Difference]: Start difference. First operand has 108 places, 207 transitions, 3286 flow. Second operand 6 states and 582 transitions. [2023-08-23 23:12:34,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 418 transitions, 7796 flow [2023-08-23 23:12:34,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 418 transitions, 7405 flow, removed 156 selfloop flow, removed 3 redundant places. [2023-08-23 23:12:34,727 INFO L231 Difference]: Finished difference. Result has 111 places, 201 transitions, 3102 flow [2023-08-23 23:12:34,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3102, PETRI_PLACES=111, PETRI_TRANSITIONS=201} [2023-08-23 23:12:34,727 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 75 predicate places. [2023-08-23 23:12:34,728 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 201 transitions, 3102 flow [2023-08-23 23:12:34,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:34,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:34,728 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] [2023-08-23 23:12:34,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-23 23:12:34,728 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:34,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:34,729 INFO L85 PathProgramCache]: Analyzing trace with hash 281286571, now seen corresponding path program 1 times [2023-08-23 23:12:34,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:34,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806385223] [2023-08-23 23:12:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:34,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:36,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:36,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806385223] [2023-08-23 23:12:36,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806385223] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:36,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:36,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-23 23:12:36,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632109252] [2023-08-23 23:12:36,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:36,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-23 23:12:36,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:36,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-23 23:12:36,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-23 23:12:36,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-23 23:12:36,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 201 transitions, 3102 flow. Second operand has 10 states, 10 states have (on average 85.3) internal successors, (853), 10 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:36,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:36,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-23 23:12:36,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:37,519 INFO L124 PetriNetUnfolderBase]: 1932/3753 cut-off events. [2023-08-23 23:12:37,519 INFO L125 PetriNetUnfolderBase]: For 47072/47072 co-relation queries the response was YES. [2023-08-23 23:12:37,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27909 conditions, 3753 events. 1932/3753 cut-off events. For 47072/47072 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 27054 event pairs, 292 based on Foata normal form. 1/3752 useless extension candidates. Maximal degree in co-relation 27857. Up to 2169 conditions per place. [2023-08-23 23:12:37,546 INFO L140 encePairwiseOnDemand]: 195/206 looper letters, 213 selfloop transitions, 112 changer transitions 24/350 dead transitions. [2023-08-23 23:12:37,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 350 transitions, 5685 flow [2023-08-23 23:12:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-23 23:12:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-23 23:12:37,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1107 transitions. [2023-08-23 23:12:37,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44781553398058255 [2023-08-23 23:12:37,550 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1107 transitions. [2023-08-23 23:12:37,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1107 transitions. [2023-08-23 23:12:37,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:37,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1107 transitions. [2023-08-23 23:12:37,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 92.25) internal successors, (1107), 12 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:37,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 206.0) internal successors, (2678), 13 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:37,558 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 206.0) internal successors, (2678), 13 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:37,558 INFO L175 Difference]: Start difference. First operand has 111 places, 201 transitions, 3102 flow. Second operand 12 states and 1107 transitions. [2023-08-23 23:12:37,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 350 transitions, 5685 flow [2023-08-23 23:12:37,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 350 transitions, 5398 flow, removed 58 selfloop flow, removed 9 redundant places. [2023-08-23 23:12:37,696 INFO L231 Difference]: Finished difference. Result has 119 places, 262 transitions, 4301 flow [2023-08-23 23:12:37,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3014, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4301, PETRI_PLACES=119, PETRI_TRANSITIONS=262} [2023-08-23 23:12:37,697 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 83 predicate places. [2023-08-23 23:12:37,697 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 262 transitions, 4301 flow [2023-08-23 23:12:37,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.3) internal successors, (853), 10 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:37,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:37,698 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] [2023-08-23 23:12:37,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-23 23:12:37,698 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:37,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:37,698 INFO L85 PathProgramCache]: Analyzing trace with hash 135882733, now seen corresponding path program 2 times [2023-08-23 23:12:37,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:37,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584989255] [2023-08-23 23:12:37,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:37,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:39,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:39,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:39,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584989255] [2023-08-23 23:12:39,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584989255] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:39,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:39,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-23 23:12:39,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129342365] [2023-08-23 23:12:39,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:39,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-23 23:12:39,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:39,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-23 23:12:39,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-23 23:12:39,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-23 23:12:39,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 262 transitions, 4301 flow. Second operand has 10 states, 10 states have (on average 85.3) internal successors, (853), 10 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:39,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:39,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-23 23:12:39,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:40,157 INFO L124 PetriNetUnfolderBase]: 2096/4130 cut-off events. [2023-08-23 23:12:40,157 INFO L125 PetriNetUnfolderBase]: For 55560/55560 co-relation queries the response was YES. [2023-08-23 23:12:40,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29332 conditions, 4130 events. 2096/4130 cut-off events. For 55560/55560 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 30922 event pairs, 355 based on Foata normal form. 2/4130 useless extension candidates. Maximal degree in co-relation 29278. Up to 1918 conditions per place. [2023-08-23 23:12:40,179 INFO L140 encePairwiseOnDemand]: 195/206 looper letters, 196 selfloop transitions, 79 changer transitions 77/353 dead transitions. [2023-08-23 23:12:40,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 353 transitions, 6279 flow [2023-08-23 23:12:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-23 23:12:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-23 23:12:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 747 transitions. [2023-08-23 23:12:40,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532766990291262 [2023-08-23 23:12:40,183 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 747 transitions. [2023-08-23 23:12:40,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 747 transitions. [2023-08-23 23:12:40,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:40,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 747 transitions. [2023-08-23 23:12:40,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.375) internal successors, (747), 8 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:40,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:40,187 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:40,188 INFO L175 Difference]: Start difference. First operand has 119 places, 262 transitions, 4301 flow. Second operand 8 states and 747 transitions. [2023-08-23 23:12:40,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 353 transitions, 6279 flow [2023-08-23 23:12:40,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 353 transitions, 5861 flow, removed 192 selfloop flow, removed 1 redundant places. [2023-08-23 23:12:40,332 INFO L231 Difference]: Finished difference. Result has 128 places, 240 transitions, 3925 flow [2023-08-23 23:12:40,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3953, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3925, PETRI_PLACES=128, PETRI_TRANSITIONS=240} [2023-08-23 23:12:40,333 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 92 predicate places. [2023-08-23 23:12:40,333 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 240 transitions, 3925 flow [2023-08-23 23:12:40,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.3) internal successors, (853), 10 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:40,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:40,334 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] [2023-08-23 23:12:40,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-23 23:12:40,334 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:40,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:40,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1097508209, now seen corresponding path program 3 times [2023-08-23 23:12:40,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:40,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382491199] [2023-08-23 23:12:40,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:40,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:41,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:41,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382491199] [2023-08-23 23:12:41,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382491199] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:41,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:41,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-23 23:12:41,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041476593] [2023-08-23 23:12:41,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:41,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-23 23:12:41,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:41,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-23 23:12:41,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-08-23 23:12:41,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 206 [2023-08-23 23:12:41,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 240 transitions, 3925 flow. Second operand has 11 states, 11 states have (on average 82.0909090909091) internal successors, (903), 11 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:41,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:41,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 206 [2023-08-23 23:12:41,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:43,408 INFO L124 PetriNetUnfolderBase]: 2289/4534 cut-off events. [2023-08-23 23:12:43,408 INFO L125 PetriNetUnfolderBase]: For 66022/66022 co-relation queries the response was YES. [2023-08-23 23:12:43,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32333 conditions, 4534 events. 2289/4534 cut-off events. For 66022/66022 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 34681 event pairs, 277 based on Foata normal form. 8/4542 useless extension candidates. Maximal degree in co-relation 32274. Up to 1719 conditions per place. [2023-08-23 23:12:43,435 INFO L140 encePairwiseOnDemand]: 194/206 looper letters, 197 selfloop transitions, 142 changer transitions 82/422 dead transitions. [2023-08-23 23:12:43,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 422 transitions, 6894 flow [2023-08-23 23:12:43,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-23 23:12:43,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-23 23:12:43,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1080 transitions. [2023-08-23 23:12:43,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368932038834951 [2023-08-23 23:12:43,438 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1080 transitions. [2023-08-23 23:12:43,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1080 transitions. [2023-08-23 23:12:43,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:43,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1080 transitions. [2023-08-23 23:12:43,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:43,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 206.0) internal successors, (2678), 13 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:43,445 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 206.0) internal successors, (2678), 13 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:43,445 INFO L175 Difference]: Start difference. First operand has 128 places, 240 transitions, 3925 flow. Second operand 12 states and 1080 transitions. [2023-08-23 23:12:43,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 422 transitions, 6894 flow [2023-08-23 23:12:43,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 422 transitions, 6783 flow, removed 42 selfloop flow, removed 2 redundant places. [2023-08-23 23:12:43,590 INFO L231 Difference]: Finished difference. Result has 141 places, 274 transitions, 5156 flow [2023-08-23 23:12:43,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3848, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5156, PETRI_PLACES=141, PETRI_TRANSITIONS=274} [2023-08-23 23:12:43,590 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 105 predicate places. [2023-08-23 23:12:43,590 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 274 transitions, 5156 flow [2023-08-23 23:12:43,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 82.0909090909091) internal successors, (903), 11 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:43,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:43,591 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] [2023-08-23 23:12:43,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-23 23:12:43,591 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:43,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:43,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1544432667, now seen corresponding path program 4 times [2023-08-23 23:12:43,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:43,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019713355] [2023-08-23 23:12:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:43,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:43,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:43,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:43,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019713355] [2023-08-23 23:12:43,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019713355] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:43,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:43,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:12:43,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48170373] [2023-08-23 23:12:43,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:43,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:12:43,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:43,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:12:43,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:12:43,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 206 [2023-08-23 23:12:43,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 274 transitions, 5156 flow. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:43,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:43,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 206 [2023-08-23 23:12:43,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:44,721 INFO L124 PetriNetUnfolderBase]: 2882/5564 cut-off events. [2023-08-23 23:12:44,721 INFO L125 PetriNetUnfolderBase]: For 103775/103775 co-relation queries the response was YES. [2023-08-23 23:12:44,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43105 conditions, 5564 events. 2882/5564 cut-off events. For 103775/103775 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 43337 event pairs, 502 based on Foata normal form. 9/5573 useless extension candidates. Maximal degree in co-relation 43041. Up to 3045 conditions per place. [2023-08-23 23:12:44,751 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 132 selfloop transitions, 1 changer transitions 302/435 dead transitions. [2023-08-23 23:12:44,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 435 transitions, 8755 flow [2023-08-23 23:12:44,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:12:44,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:12:44,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 412 transitions. [2023-08-23 23:12:44,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-23 23:12:44,753 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 412 transitions. [2023-08-23 23:12:44,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 412 transitions. [2023-08-23 23:12:44,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:44,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 412 transitions. [2023-08-23 23:12:44,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:44,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:44,759 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:44,759 INFO L175 Difference]: Start difference. First operand has 141 places, 274 transitions, 5156 flow. Second operand 4 states and 412 transitions. [2023-08-23 23:12:44,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 435 transitions, 8755 flow [2023-08-23 23:12:44,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 435 transitions, 8405 flow, removed 120 selfloop flow, removed 9 redundant places. [2023-08-23 23:12:44,983 INFO L231 Difference]: Finished difference. Result has 134 places, 111 transitions, 1750 flow [2023-08-23 23:12:44,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=4880, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1750, PETRI_PLACES=134, PETRI_TRANSITIONS=111} [2023-08-23 23:12:44,983 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 98 predicate places. [2023-08-23 23:12:44,983 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 111 transitions, 1750 flow [2023-08-23 23:12:44,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:44,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:44,984 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] [2023-08-23 23:12:44,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-23 23:12:44,984 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:12:44,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:44,984 INFO L85 PathProgramCache]: Analyzing trace with hash 876648319, now seen corresponding path program 5 times [2023-08-23 23:12:44,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:44,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314302735] [2023-08-23 23:12:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:44,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:45,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:45,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314302735] [2023-08-23 23:12:45,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314302735] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:45,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:45,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-23 23:12:45,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284007464] [2023-08-23 23:12:45,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:45,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-23 23:12:45,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:45,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-23 23:12:45,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-23 23:12:45,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 206 [2023-08-23 23:12:45,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 111 transitions, 1750 flow. Second operand has 8 states, 8 states have (on average 86.875) internal successors, (695), 8 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) [2023-08-23 23:12:45,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:45,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 206 [2023-08-23 23:12:45,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:46,153 INFO L124 PetriNetUnfolderBase]: 569/1121 cut-off events. [2023-08-23 23:12:46,153 INFO L125 PetriNetUnfolderBase]: For 18087/18087 co-relation queries the response was YES. [2023-08-23 23:12:46,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8669 conditions, 1121 events. 569/1121 cut-off events. For 18087/18087 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5893 event pairs, 160 based on Foata normal form. 5/1120 useless extension candidates. Maximal degree in co-relation 8622. Up to 495 conditions per place. [2023-08-23 23:12:46,159 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 0 selfloop transitions, 0 changer transitions 127/127 dead transitions. [2023-08-23 23:12:46,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 127 transitions, 2183 flow [2023-08-23 23:12:46,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-23 23:12:46,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-23 23:12:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 545 transitions. [2023-08-23 23:12:46,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44093851132686085 [2023-08-23 23:12:46,160 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 545 transitions. [2023-08-23 23:12:46,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 545 transitions. [2023-08-23 23:12:46,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:46,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 545 transitions. [2023-08-23 23:12:46,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:46,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:46,163 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:46,163 INFO L175 Difference]: Start difference. First operand has 134 places, 111 transitions, 1750 flow. Second operand 6 states and 545 transitions. [2023-08-23 23:12:46,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 127 transitions, 2183 flow [2023-08-23 23:12:46,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 127 transitions, 1825 flow, removed 111 selfloop flow, removed 27 redundant places. [2023-08-23 23:12:46,200 INFO L231 Difference]: Finished difference. Result has 102 places, 0 transitions, 0 flow [2023-08-23 23:12:46,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=102, PETRI_TRANSITIONS=0} [2023-08-23 23:12:46,200 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 66 predicate places. [2023-08-23 23:12:46,200 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 0 transitions, 0 flow [2023-08-23 23:12:46,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.875) internal successors, (695), 8 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) [2023-08-23 23:12:46,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-23 23:12:46,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-23 23:12:46,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-23 23:12:46,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-23 23:12:46,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-23 23:12:46,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-23 23:12:46,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-23 23:12:46,204 INFO L445 BasicCegarLoop]: Path program histogram: [7, 5, 3, 2, 1, 1, 1] [2023-08-23 23:12:46,209 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-23 23:12:46,209 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-23 23:12:46,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.08 11:12:46 BasicIcfg [2023-08-23 23:12:46,214 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-23 23:12:46,214 INFO L158 Benchmark]: Toolchain (without parser) took 42844.99ms. Allocated memory was 335.5MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 293.6MB in the beginning and 1.2GB in the end (delta: -915.6MB). Peak memory consumption was 292.3MB. Max. memory is 16.0GB. [2023-08-23 23:12:46,214 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 335.5MB. Free memory was 313.1MB in the beginning and 313.0MB in the end (delta: 88.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:12:46,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 669.69ms. Allocated memory is still 335.5MB. Free memory was 293.6MB in the beginning and 311.2MB in the end (delta: -17.6MB). Peak memory consumption was 34.1MB. Max. memory is 16.0GB. [2023-08-23 23:12:46,215 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.54ms. Allocated memory is still 335.5MB. Free memory was 311.2MB in the beginning and 307.3MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-23 23:12:46,215 INFO L158 Benchmark]: Boogie Preprocessor took 65.63ms. Allocated memory is still 335.5MB. Free memory was 307.3MB in the beginning and 305.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:12:46,215 INFO L158 Benchmark]: RCFGBuilder took 794.00ms. Allocated memory is still 335.5MB. Free memory was 305.2MB in the beginning and 302.9MB in the end (delta: 2.3MB). Peak memory consumption was 61.3MB. Max. memory is 16.0GB. [2023-08-23 23:12:46,215 INFO L158 Benchmark]: TraceAbstraction took 41222.15ms. Allocated memory was 335.5MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 301.8MB in the beginning and 1.2GB in the end (delta: -907.3MB). Peak memory consumption was 299.6MB. Max. memory is 16.0GB. [2023-08-23 23:12:46,217 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 335.5MB. Free memory was 313.1MB in the beginning and 313.0MB in the end (delta: 88.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 669.69ms. Allocated memory is still 335.5MB. Free memory was 293.6MB in the beginning and 311.2MB in the end (delta: -17.6MB). Peak memory consumption was 34.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 81.54ms. Allocated memory is still 335.5MB. Free memory was 311.2MB in the beginning and 307.3MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 65.63ms. Allocated memory is still 335.5MB. Free memory was 307.3MB in the beginning and 305.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 794.00ms. Allocated memory is still 335.5MB. Free memory was 305.2MB in the beginning and 302.9MB in the end (delta: 2.3MB). Peak memory consumption was 61.3MB. Max. memory is 16.0GB. * TraceAbstraction took 41222.15ms. Allocated memory was 335.5MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 301.8MB in the beginning and 1.2GB in the end (delta: -907.3MB). Peak memory consumption was 299.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 117 PlacesBefore, 36 PlacesAfterwards, 109 TransitionsBefore, 26 TransitionsAfterwards, 2202 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 94 TotalNumberOfCompositions, 6197 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2315, independent: 2124, independent conditional: 0, independent unconditional: 2124, dependent: 191, dependent conditional: 0, dependent unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1176, independent: 1120, independent conditional: 0, independent unconditional: 1120, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2315, independent: 1004, independent conditional: 0, independent unconditional: 1004, dependent: 135, dependent conditional: 0, dependent unconditional: 135, unknown: 1176, unknown conditional: 0, unknown unconditional: 1176] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: 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 7 procedures, 142 locations, 6 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: 41.1s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 18.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 755 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 755 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 4.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 439 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4394 IncrementalHoareTripleChecker+Invalid, 4833 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 439 mSolverCounterUnsat, 1 mSDtfsCounter, 4394 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5156occurred in iteration=18, InterpolantAutomatonStates: 134, 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, 0.6s SatisfiabilityAnalysisTime, 17.3s InterpolantComputationTime, 347 NumberOfCodeBlocks, 347 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 5069 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-23 23:12:46,235 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...