/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-chromosome-opt-symm.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:33:42,235 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:33:42,303 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:33:42,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:33:42,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:33:42,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:33:42,315 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:33:42,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:33:42,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:33:42,355 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:33:42,356 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:33:42,356 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:33:42,357 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:33:42,358 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:33:42,358 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:33:42,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:33:42,358 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:33:42,359 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:33:42,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:33:42,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:33:42,359 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:33:42,360 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:33:42,360 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:33:42,360 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:33:42,360 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:33:42,361 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:33:42,362 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:33:42,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:33:42,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:33:42,362 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:33:42,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:33:42,364 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:33:42,364 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:33:42,364 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:33:42,364 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:33:42,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:33:42,364 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:33:42,364 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:33:42,364 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:33:42,365 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:33:42,365 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:33:42,365 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:33:42,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:33:42,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:33:42,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:33:42,577 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:33:42,579 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:33:42,580 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-chromosome-opt-symm.wvr_bound2.c [2023-08-03 19:33:43,673 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:33:44,253 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:33:44,254 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-chromosome-opt-symm.wvr_bound2.c [2023-08-03 19:33:44,260 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72db87f61/5d17d34db0984a1380bf9599d2855ae1/FLAG4f83612c1 [2023-08-03 19:33:44,272 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72db87f61/5d17d34db0984a1380bf9599d2855ae1 [2023-08-03 19:33:44,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:33:44,275 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:33:44,276 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:33:44,276 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:33:44,281 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:33:44,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:33:44" (1/1) ... [2023-08-03 19:33:44,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1134dbbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:44, skipping insertion in model container [2023-08-03 19:33:44,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:33:44" (1/1) ... [2023-08-03 19:33:44,303 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:33:44,471 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-chromosome-opt-symm.wvr_bound2.c[2728,2741] [2023-08-03 19:33:44,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:33:44,493 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:33:44,534 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-chromosome-opt-symm.wvr_bound2.c[2728,2741] [2023-08-03 19:33:44,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:33:44,548 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:33:44,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:44 WrapperNode [2023-08-03 19:33:44,549 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:33:44,550 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:33:44,550 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:33:44,550 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:33:44,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:44" (1/1) ... [2023-08-03 19:33:44,573 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:44" (1/1) ... [2023-08-03 19:33:44,607 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 210 [2023-08-03 19:33:44,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:33:44,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:33:44,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:33:44,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:33:44,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:44" (1/1) ... [2023-08-03 19:33:44,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:44" (1/1) ... [2023-08-03 19:33:44,629 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:44" (1/1) ... [2023-08-03 19:33:44,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:44" (1/1) ... [2023-08-03 19:33:44,635 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:44" (1/1) ... [2023-08-03 19:33:44,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:44" (1/1) ... [2023-08-03 19:33:44,654 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:44" (1/1) ... [2023-08-03 19:33:44,656 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:44" (1/1) ... [2023-08-03 19:33:44,658 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:33:44,659 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:33:44,659 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:33:44,659 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:33:44,659 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:44" (1/1) ... [2023-08-03 19:33:44,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:33:44,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:33:44,702 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) [2023-08-03 19:33:44,724 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 [2023-08-03 19:33:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:33:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:33:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:33:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:33:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:33:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:33:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:33:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:33:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 19:33:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:33:44,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:33:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:33:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:33:44,750 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 19:33:44,850 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:33:44,852 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:33:45,115 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:33:45,129 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:33:45,129 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-03 19:33:45,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:33:45 BoogieIcfgContainer [2023-08-03 19:33:45,132 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:33:45,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:33:45,160 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:33:45,163 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:33:45,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:33:44" (1/3) ... [2023-08-03 19:33:45,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d18c471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:33:45, skipping insertion in model container [2023-08-03 19:33:45,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:44" (2/3) ... [2023-08-03 19:33:45,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d18c471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:33:45, skipping insertion in model container [2023-08-03 19:33:45,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:33:45" (3/3) ... [2023-08-03 19:33:45,165 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-chromosome-opt-symm.wvr_bound2.c [2023-08-03 19:33:45,172 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:33:45,180 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:33:45,180 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:33:45,180 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:33:45,270 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 19:33:45,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 229 transitions, 480 flow [2023-08-03 19:33:45,486 INFO L124 PetriNetUnfolderBase]: 49/393 cut-off events. [2023-08-03 19:33:45,486 INFO L125 PetriNetUnfolderBase]: For 8/10 co-relation queries the response was YES. [2023-08-03 19:33:45,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 393 events. 49/393 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1412 event pairs, 0 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 223. Up to 8 conditions per place. [2023-08-03 19:33:45,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 229 transitions, 480 flow [2023-08-03 19:33:45,500 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 229 transitions, 480 flow [2023-08-03 19:33:45,504 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:33:45,521 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 229 transitions, 480 flow [2023-08-03 19:33:45,523 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 229 transitions, 480 flow [2023-08-03 19:33:45,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 229 transitions, 480 flow [2023-08-03 19:33:45,587 INFO L124 PetriNetUnfolderBase]: 49/393 cut-off events. [2023-08-03 19:33:45,587 INFO L125 PetriNetUnfolderBase]: For 8/10 co-relation queries the response was YES. [2023-08-03 19:33:45,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 393 events. 49/393 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1412 event pairs, 0 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 223. Up to 8 conditions per place. [2023-08-03 19:33:45,601 INFO L119 LiptonReduction]: Number of co-enabled transitions 9792 [2023-08-03 19:33:50,344 INFO L134 LiptonReduction]: Checked pairs total: 14642 [2023-08-03 19:33:50,344 INFO L136 LiptonReduction]: Total number of compositions: 229 [2023-08-03 19:33:50,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:33:50,362 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=true, 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;@2e9026c5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:33:50,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:33:50,366 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:33:50,367 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-08-03 19:33:50,367 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:33:50,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:33:50,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:33:50,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:33:50,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:33:50,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1842585813, now seen corresponding path program 1 times [2023-08-03 19:33:50,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:33:50,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450893964] [2023-08-03 19:33:50,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:33:50,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:33:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:33:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:33:50,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:33:50,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450893964] [2023-08-03 19:33:50,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450893964] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:33:50,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:33:50,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:33:50,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964174053] [2023-08-03 19:33:50,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:33:50,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:33:50,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:33:50,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:33:50,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:33:50,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 458 [2023-08-03 19:33:50,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 46 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:50,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:33:50,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 458 [2023-08-03 19:33:50,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:33:50,985 INFO L124 PetriNetUnfolderBase]: 934/1500 cut-off events. [2023-08-03 19:33:50,985 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-08-03 19:33:50,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2924 conditions, 1500 events. 934/1500 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6656 event pairs, 550 based on Foata normal form. 0/974 useless extension candidates. Maximal degree in co-relation 2534. Up to 1368 conditions per place. [2023-08-03 19:33:50,994 INFO L140 encePairwiseOnDemand]: 452/458 looper letters, 37 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-08-03 19:33:50,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 47 transitions, 198 flow [2023-08-03 19:33:50,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:33:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:33:51,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-08-03 19:33:51,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46652110625909754 [2023-08-03 19:33:51,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-08-03 19:33:51,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-08-03 19:33:51,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:33:51,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-08-03 19:33:51,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:51,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:51,022 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:51,024 INFO L175 Difference]: Start difference. First operand has 39 places, 46 transitions, 114 flow. Second operand 3 states and 641 transitions. [2023-08-03 19:33:51,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 47 transitions, 198 flow [2023-08-03 19:33:51,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:33:51,030 INFO L231 Difference]: Finished difference. Result has 41 places, 47 transitions, 134 flow [2023-08-03 19:33:51,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=41, PETRI_TRANSITIONS=47} [2023-08-03 19:33:51,034 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-03 19:33:51,034 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 47 transitions, 134 flow [2023-08-03 19:33:51,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:51,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:33:51,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:33:51,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:33:51,035 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:33:51,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:33:51,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1508642822, now seen corresponding path program 1 times [2023-08-03 19:33:51,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:33:51,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883371178] [2023-08-03 19:33:51,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:33:51,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:33:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:33:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 19:33:51,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:33:51,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883371178] [2023-08-03 19:33:51,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883371178] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:33:51,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:33:51,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:33:51,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080701254] [2023-08-03 19:33:51,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:33:51,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:33:51,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:33:51,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:33:51,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:33:51,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 458 [2023-08-03 19:33:51,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 47 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:51,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:33:51,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 458 [2023-08-03 19:33:51,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:33:51,316 INFO L124 PetriNetUnfolderBase]: 908/1420 cut-off events. [2023-08-03 19:33:51,316 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-03 19:33:51,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2818 conditions, 1420 events. 908/1420 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5986 event pairs, 245 based on Foata normal form. 0/925 useless extension candidates. Maximal degree in co-relation 2795. Up to 1313 conditions per place. [2023-08-03 19:33:51,325 INFO L140 encePairwiseOnDemand]: 455/458 looper letters, 48 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-03 19:33:51,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 56 transitions, 252 flow [2023-08-03 19:33:51,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:33:51,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:33:51,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2023-08-03 19:33:51,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47889374090247455 [2023-08-03 19:33:51,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2023-08-03 19:33:51,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2023-08-03 19:33:51,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:33:51,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2023-08-03 19:33:51,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:51,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:51,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:51,335 INFO L175 Difference]: Start difference. First operand has 41 places, 47 transitions, 134 flow. Second operand 3 states and 658 transitions. [2023-08-03 19:33:51,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 56 transitions, 252 flow [2023-08-03 19:33:51,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:33:51,338 INFO L231 Difference]: Finished difference. Result has 43 places, 47 transitions, 138 flow [2023-08-03 19:33:51,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=43, PETRI_TRANSITIONS=47} [2023-08-03 19:33:51,341 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-08-03 19:33:51,343 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 47 transitions, 138 flow [2023-08-03 19:33:51,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:51,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:33:51,349 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:33:51,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:33:51,349 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:33:51,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:33:51,351 INFO L85 PathProgramCache]: Analyzing trace with hash 522465785, now seen corresponding path program 1 times [2023-08-03 19:33:51,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:33:51,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50000304] [2023-08-03 19:33:51,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:33:51,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:33:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:33:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 19:33:51,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:33:51,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50000304] [2023-08-03 19:33:51,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50000304] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:33:51,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118759084] [2023-08-03 19:33:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:33:51,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:33:51,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:33:51,505 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:33:51,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 19:33:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:33:51,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-03 19:33:51,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:33:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 19:33:51,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:33:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 19:33:51,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118759084] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:33:51,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:33:51,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-03 19:33:51,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612149721] [2023-08-03 19:33:51,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:33:51,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 19:33:51,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:33:51,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 19:33:51,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-03 19:33:51,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 458 [2023-08-03 19:33:51,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 47 transitions, 138 flow. Second operand has 8 states, 8 states have (on average 196.75) internal successors, (1574), 8 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:51,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:33:51,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 458 [2023-08-03 19:33:51,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:33:51,958 INFO L124 PetriNetUnfolderBase]: 908/1426 cut-off events. [2023-08-03 19:33:51,958 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-08-03 19:33:51,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2849 conditions, 1426 events. 908/1426 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5951 event pairs, 540 based on Foata normal form. 3/937 useless extension candidates. Maximal degree in co-relation 2802. Up to 1322 conditions per place. [2023-08-03 19:33:51,966 INFO L140 encePairwiseOnDemand]: 453/458 looper letters, 37 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2023-08-03 19:33:51,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 256 flow [2023-08-03 19:33:51,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 19:33:51,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 19:33:51,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1223 transitions. [2023-08-03 19:33:51,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4450509461426492 [2023-08-03 19:33:51,970 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1223 transitions. [2023-08-03 19:33:51,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1223 transitions. [2023-08-03 19:33:51,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:33:51,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1223 transitions. [2023-08-03 19:33:51,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 203.83333333333334) internal successors, (1223), 6 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:51,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:51,979 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:51,979 INFO L175 Difference]: Start difference. First operand has 43 places, 47 transitions, 138 flow. Second operand 6 states and 1223 transitions. [2023-08-03 19:33:51,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 256 flow [2023-08-03 19:33:51,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 19:33:51,982 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 200 flow [2023-08-03 19:33:51,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2023-08-03 19:33:51,983 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 10 predicate places. [2023-08-03 19:33:51,983 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 200 flow [2023-08-03 19:33:51,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 196.75) internal successors, (1574), 8 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:51,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:33:51,984 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 19:33:51,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 19:33:52,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:33:52,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:33:52,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:33:52,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2065740888, now seen corresponding path program 2 times [2023-08-03 19:33:52,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:33:52,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856745244] [2023-08-03 19:33:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:33:52,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:33:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:33:52,317 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:33:52,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:33:52,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856745244] [2023-08-03 19:33:52,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856745244] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:33:52,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365518883] [2023-08-03 19:33:52,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:33:52,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:33:52,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:33:52,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:33:52,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 19:33:52,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:33:52,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:33:52,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:33:52,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:33:52,491 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:33:52,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:33:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:33:52,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365518883] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:33:52,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:33:52,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-03 19:33:52,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75075041] [2023-08-03 19:33:52,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:33:52,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-03 19:33:52,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:33:52,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-03 19:33:52,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-08-03 19:33:52,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 458 [2023-08-03 19:33:52,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 200 flow. Second operand has 13 states, 13 states have (on average 196.46153846153845) internal successors, (2554), 13 states have internal predecessors, (2554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:52,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:33:52,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 458 [2023-08-03 19:33:52,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:33:52,926 INFO L124 PetriNetUnfolderBase]: 908/1428 cut-off events. [2023-08-03 19:33:52,927 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-08-03 19:33:52,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2874 conditions, 1428 events. 908/1428 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5949 event pairs, 540 based on Foata normal form. 1/937 useless extension candidates. Maximal degree in co-relation 2802. Up to 1322 conditions per place. [2023-08-03 19:33:52,934 INFO L140 encePairwiseOnDemand]: 453/458 looper letters, 37 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2023-08-03 19:33:52,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 55 transitions, 310 flow [2023-08-03 19:33:52,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 19:33:52,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 19:33:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1416 transitions. [2023-08-03 19:33:52,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4416718652526513 [2023-08-03 19:33:52,938 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1416 transitions. [2023-08-03 19:33:52,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1416 transitions. [2023-08-03 19:33:52,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:33:52,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1416 transitions. [2023-08-03 19:33:52,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:52,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 458.0) internal successors, (3664), 8 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:52,950 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 458.0) internal successors, (3664), 8 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:52,950 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 200 flow. Second operand 7 states and 1416 transitions. [2023-08-03 19:33:52,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 55 transitions, 310 flow [2023-08-03 19:33:52,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 294 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-03 19:33:52,952 INFO L231 Difference]: Finished difference. Result has 55 places, 55 transitions, 230 flow [2023-08-03 19:33:52,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=230, PETRI_PLACES=55, PETRI_TRANSITIONS=55} [2023-08-03 19:33:52,953 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2023-08-03 19:33:52,953 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 55 transitions, 230 flow [2023-08-03 19:33:52,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 196.46153846153845) internal successors, (2554), 13 states have internal predecessors, (2554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:52,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:33:52,954 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 19:33:52,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 19:33:53,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 19:33:53,160 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:33:53,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:33:53,161 INFO L85 PathProgramCache]: Analyzing trace with hash 456397881, now seen corresponding path program 3 times [2023-08-03 19:33:53,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:33:53,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195183962] [2023-08-03 19:33:53,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:33:53,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:33:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:33:53,204 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:33:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:33:53,257 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:33:53,257 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:33:53,258 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 19:33:53,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 19:33:53,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:33:53,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 19:33:53,260 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-03 19:33:53,262 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:33:53,262 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:33:53,296 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 19:33:53,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 303 transitions, 654 flow [2023-08-03 19:33:53,449 INFO L124 PetriNetUnfolderBase]: 165/1088 cut-off events. [2023-08-03 19:33:53,450 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2023-08-03 19:33:53,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 1088 events. 165/1088 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6033 event pairs, 1 based on Foata normal form. 0/920 useless extension candidates. Maximal degree in co-relation 666. Up to 32 conditions per place. [2023-08-03 19:33:53,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 303 transitions, 654 flow [2023-08-03 19:33:53,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 303 transitions, 654 flow [2023-08-03 19:33:53,470 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:33:53,471 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 271 places, 303 transitions, 654 flow [2023-08-03 19:33:53,471 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 271 places, 303 transitions, 654 flow [2023-08-03 19:33:53,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 303 transitions, 654 flow [2023-08-03 19:33:53,600 INFO L124 PetriNetUnfolderBase]: 165/1088 cut-off events. [2023-08-03 19:33:53,601 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2023-08-03 19:33:53,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 1088 events. 165/1088 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6033 event pairs, 1 based on Foata normal form. 0/920 useless extension candidates. Maximal degree in co-relation 666. Up to 32 conditions per place. [2023-08-03 19:33:53,651 INFO L119 LiptonReduction]: Number of co-enabled transitions 30192 [2023-08-03 19:33:58,767 INFO L134 LiptonReduction]: Checked pairs total: 44992 [2023-08-03 19:33:58,767 INFO L136 LiptonReduction]: Total number of compositions: 289 [2023-08-03 19:33:58,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:33:58,770 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=true, 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;@2e9026c5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:33:58,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:33:58,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:33:58,772 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-08-03 19:33:58,772 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:33:58,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:33:58,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:33:58,773 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:33:58,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:33:58,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1600589997, now seen corresponding path program 1 times [2023-08-03 19:33:58,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:33:58,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553299925] [2023-08-03 19:33:58,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:33:58,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:33:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:33:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:33:58,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:33:58,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553299925] [2023-08-03 19:33:58,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553299925] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:33:58,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:33:58,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:33:58,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305605403] [2023-08-03 19:33:58,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:33:58,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:33:58,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:33:58,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:33:58,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:33:58,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 592 [2023-08-03 19:33:58,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 72 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:33:58,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:33:58,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 592 [2023-08-03 19:33:58,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:34:05,855 INFO L124 PetriNetUnfolderBase]: 90702/115671 cut-off events. [2023-08-03 19:34:05,855 INFO L125 PetriNetUnfolderBase]: For 6701/6701 co-relation queries the response was YES. [2023-08-03 19:34:06,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230022 conditions, 115671 events. 90702/115671 cut-off events. For 6701/6701 co-relation queries the response was YES. Maximal size of possible extension queue 3357. Compared 633217 event pairs, 54776 based on Foata normal form. 0/85401 useless extension candidates. Maximal degree in co-relation 44040. Up to 110552 conditions per place. [2023-08-03 19:34:06,535 INFO L140 encePairwiseOnDemand]: 586/592 looper letters, 59 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2023-08-03 19:34:06,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 320 flow [2023-08-03 19:34:06,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:34:06,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:34:06,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 855 transitions. [2023-08-03 19:34:06,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4814189189189189 [2023-08-03 19:34:06,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 855 transitions. [2023-08-03 19:34:06,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 855 transitions. [2023-08-03 19:34:06,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:34:06,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 855 transitions. [2023-08-03 19:34:06,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:06,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:06,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:06,545 INFO L175 Difference]: Start difference. First operand has 59 places, 72 transitions, 192 flow. Second operand 3 states and 855 transitions. [2023-08-03 19:34:06,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 320 flow [2023-08-03 19:34:06,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:34:06,556 INFO L231 Difference]: Finished difference. Result has 61 places, 73 transitions, 212 flow [2023-08-03 19:34:06,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=61, PETRI_TRANSITIONS=73} [2023-08-03 19:34:06,557 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2023-08-03 19:34:06,557 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 73 transitions, 212 flow [2023-08-03 19:34:06,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:06,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:34:06,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:34:06,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 19:34:06,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:34:06,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:34:06,558 INFO L85 PathProgramCache]: Analyzing trace with hash 242161250, now seen corresponding path program 1 times [2023-08-03 19:34:06,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:34:06,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675883820] [2023-08-03 19:34:06,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:06,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:34:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 19:34:06,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:34:06,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675883820] [2023-08-03 19:34:06,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675883820] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:34:06,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:34:06,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:34:06,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105751427] [2023-08-03 19:34:06,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:34:06,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:34:06,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:34:06,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:34:06,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:34:06,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 592 [2023-08-03 19:34:06,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 73 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:06,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:34:06,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 592 [2023-08-03 19:34:06,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:34:12,827 INFO L124 PetriNetUnfolderBase]: 90382/115087 cut-off events. [2023-08-03 19:34:12,827 INFO L125 PetriNetUnfolderBase]: For 6786/6786 co-relation queries the response was YES. [2023-08-03 19:34:12,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229329 conditions, 115087 events. 90382/115087 cut-off events. For 6786/6786 co-relation queries the response was YES. Maximal size of possible extension queue 3268. Compared 625154 event pairs, 40197 based on Foata normal form. 0/85741 useless extension candidates. Maximal degree in co-relation 229304. Up to 110095 conditions per place. [2023-08-03 19:34:13,343 INFO L140 encePairwiseOnDemand]: 589/592 looper letters, 71 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-03 19:34:13,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 378 flow [2023-08-03 19:34:13,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:34:13,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:34:13,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2023-08-03 19:34:13,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49155405405405406 [2023-08-03 19:34:13,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2023-08-03 19:34:13,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2023-08-03 19:34:13,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:34:13,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2023-08-03 19:34:13,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:13,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:13,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:13,352 INFO L175 Difference]: Start difference. First operand has 61 places, 73 transitions, 212 flow. Second operand 3 states and 873 transitions. [2023-08-03 19:34:13,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 378 flow [2023-08-03 19:34:13,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:34:13,360 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 220 flow [2023-08-03 19:34:13,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=63, PETRI_TRANSITIONS=74} [2023-08-03 19:34:13,362 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 4 predicate places. [2023-08-03 19:34:13,362 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 220 flow [2023-08-03 19:34:13,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:13,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:34:13,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:34:13,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 19:34:13,363 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:34:13,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:34:13,363 INFO L85 PathProgramCache]: Analyzing trace with hash -906935569, now seen corresponding path program 1 times [2023-08-03 19:34:13,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:34:13,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732628675] [2023-08-03 19:34:13,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:13,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:34:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 19:34:13,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:34:13,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732628675] [2023-08-03 19:34:13,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732628675] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:34:13,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815162483] [2023-08-03 19:34:13,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:13,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:34:13,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:34:13,413 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:34:13,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 19:34:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:13,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:34:13,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:34:13,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 19:34:13,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:34:13,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815162483] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:34:13,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:34:13,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:34:13,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667796291] [2023-08-03 19:34:13,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:34:13,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:34:13,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:34:13,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:34:13,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:34:13,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 592 [2023-08-03 19:34:13,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 74 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:13,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:34:13,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 592 [2023-08-03 19:34:13,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:34:19,705 INFO L124 PetriNetUnfolderBase]: 90340/114856 cut-off events. [2023-08-03 19:34:19,705 INFO L125 PetriNetUnfolderBase]: For 5856/5856 co-relation queries the response was YES. [2023-08-03 19:34:19,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229146 conditions, 114856 events. 90340/114856 cut-off events. For 5856/5856 co-relation queries the response was YES. Maximal size of possible extension queue 3230. Compared 622060 event pairs, 40064 based on Foata normal form. 0/85637 useless extension candidates. Maximal degree in co-relation 229115. Up to 108770 conditions per place. [2023-08-03 19:34:20,329 INFO L140 encePairwiseOnDemand]: 589/592 looper letters, 88 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2023-08-03 19:34:20,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 100 transitions, 452 flow [2023-08-03 19:34:20,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:34:20,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:34:20,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 889 transitions. [2023-08-03 19:34:20,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005630630630631 [2023-08-03 19:34:20,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 889 transitions. [2023-08-03 19:34:20,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 889 transitions. [2023-08-03 19:34:20,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:34:20,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 889 transitions. [2023-08-03 19:34:20,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.3333333333333) internal successors, (889), 3 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:20,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:20,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:20,339 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 220 flow. Second operand 3 states and 889 transitions. [2023-08-03 19:34:20,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 100 transitions, 452 flow [2023-08-03 19:34:20,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 100 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:34:20,348 INFO L231 Difference]: Finished difference. Result has 65 places, 75 transitions, 230 flow [2023-08-03 19:34:20,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=65, PETRI_TRANSITIONS=75} [2023-08-03 19:34:20,349 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2023-08-03 19:34:20,350 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 75 transitions, 230 flow [2023-08-03 19:34:20,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:20,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:34:20,350 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:34:20,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 19:34:20,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:34:20,559 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:34:20,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:34:20,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1969223574, now seen corresponding path program 1 times [2023-08-03 19:34:20,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:34:20,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559608947] [2023-08-03 19:34:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:20,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:34:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 19:34:20,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:34:20,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559608947] [2023-08-03 19:34:20,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559608947] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:34:20,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962869194] [2023-08-03 19:34:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:20,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:34:20,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:34:20,643 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:34:20,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 19:34:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:20,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-03 19:34:20,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:34:20,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 19:34:20,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:34:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 19:34:20,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962869194] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:34:20,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:34:20,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-03 19:34:20,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910584111] [2023-08-03 19:34:20,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:34:20,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 19:34:20,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:34:20,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 19:34:20,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-03 19:34:20,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 592 [2023-08-03 19:34:20,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 75 transitions, 230 flow. Second operand has 8 states, 8 states have (on average 261.125) internal successors, (2089), 8 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:20,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:34:20,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 592 [2023-08-03 19:34:20,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:34:27,562 INFO L124 PetriNetUnfolderBase]: 90340/114965 cut-off events. [2023-08-03 19:34:27,563 INFO L125 PetriNetUnfolderBase]: For 9497/9497 co-relation queries the response was YES. [2023-08-03 19:34:27,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233084 conditions, 114965 events. 90340/114965 cut-off events. For 9497/9497 co-relation queries the response was YES. Maximal size of possible extension queue 3246. Compared 622746 event pairs, 54629 based on Foata normal form. 3/87598 useless extension candidates. Maximal degree in co-relation 233034. Up to 110062 conditions per place. [2023-08-03 19:34:28,110 INFO L140 encePairwiseOnDemand]: 587/592 looper letters, 61 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2023-08-03 19:34:28,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 81 transitions, 396 flow [2023-08-03 19:34:28,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 19:34:28,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 19:34:28,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1629 transitions. [2023-08-03 19:34:28,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45861486486486486 [2023-08-03 19:34:28,115 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1629 transitions. [2023-08-03 19:34:28,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1629 transitions. [2023-08-03 19:34:28,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:34:28,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1629 transitions. [2023-08-03 19:34:28,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 271.5) internal successors, (1629), 6 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:28,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:28,126 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:28,126 INFO L175 Difference]: Start difference. First operand has 65 places, 75 transitions, 230 flow. Second operand 6 states and 1629 transitions. [2023-08-03 19:34:28,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 81 transitions, 396 flow [2023-08-03 19:34:28,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 81 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:34:28,135 INFO L231 Difference]: Finished difference. Result has 72 places, 81 transitions, 294 flow [2023-08-03 19:34:28,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=72, PETRI_TRANSITIONS=81} [2023-08-03 19:34:28,137 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 13 predicate places. [2023-08-03 19:34:28,138 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 81 transitions, 294 flow [2023-08-03 19:34:28,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 261.125) internal successors, (2089), 8 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:28,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:34:28,139 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 19:34:28,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 19:34:28,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:34:28,344 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:34:28,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:34:28,345 INFO L85 PathProgramCache]: Analyzing trace with hash 691617889, now seen corresponding path program 2 times [2023-08-03 19:34:28,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:34:28,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826264229] [2023-08-03 19:34:28,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:28,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:34:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:34:28,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:34:28,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826264229] [2023-08-03 19:34:28,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826264229] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:34:28,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689332291] [2023-08-03 19:34:28,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:34:28,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:34:28,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:34:28,468 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:34:28,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 19:34:28,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:34:28,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:34:28,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:34:28,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:34:28,628 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:34:28,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:34:28,660 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:34:28,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689332291] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:34:28,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:34:28,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-03 19:34:28,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341268488] [2023-08-03 19:34:28,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:34:28,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-03 19:34:28,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:34:28,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-03 19:34:28,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-08-03 19:34:28,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 592 [2023-08-03 19:34:28,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 81 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 260.53846153846155) internal successors, (3387), 13 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:28,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:34:28,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 592 [2023-08-03 19:34:28,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:34:35,670 INFO L124 PetriNetUnfolderBase]: 90340/114967 cut-off events. [2023-08-03 19:34:35,670 INFO L125 PetriNetUnfolderBase]: For 9394/9394 co-relation queries the response was YES. [2023-08-03 19:34:35,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232864 conditions, 114967 events. 90340/114967 cut-off events. For 9394/9394 co-relation queries the response was YES. Maximal size of possible extension queue 3246. Compared 622757 event pairs, 54629 based on Foata normal form. 1/87598 useless extension candidates. Maximal degree in co-relation 232789. Up to 110062 conditions per place. [2023-08-03 19:34:36,444 INFO L140 encePairwiseOnDemand]: 587/592 looper letters, 61 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2023-08-03 19:34:36,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 83 transitions, 452 flow [2023-08-03 19:34:36,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 19:34:36,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 19:34:36,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1886 transitions. [2023-08-03 19:34:36,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551158301158301 [2023-08-03 19:34:36,450 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1886 transitions. [2023-08-03 19:34:36,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1886 transitions. [2023-08-03 19:34:36,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:34:36,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1886 transitions. [2023-08-03 19:34:36,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 269.42857142857144) internal successors, (1886), 7 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:36,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 592.0) internal successors, (4736), 8 states have internal predecessors, (4736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:36,461 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 592.0) internal successors, (4736), 8 states have internal predecessors, (4736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:36,461 INFO L175 Difference]: Start difference. First operand has 72 places, 81 transitions, 294 flow. Second operand 7 states and 1886 transitions. [2023-08-03 19:34:36,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 83 transitions, 452 flow [2023-08-03 19:34:36,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 436 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-03 19:34:36,468 INFO L231 Difference]: Finished difference. Result has 78 places, 83 transitions, 324 flow [2023-08-03 19:34:36,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=78, PETRI_TRANSITIONS=83} [2023-08-03 19:34:36,468 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 19 predicate places. [2023-08-03 19:34:36,469 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 83 transitions, 324 flow [2023-08-03 19:34:36,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 260.53846153846155) internal successors, (3387), 13 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:36,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:34:36,470 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 19:34:36,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 19:34:36,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-03 19:34:36,677 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:34:36,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:34:36,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1356445654, now seen corresponding path program 3 times [2023-08-03 19:34:36,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:34:36,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702495378] [2023-08-03 19:34:36,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:36,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:34:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-03 19:34:36,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:34:36,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702495378] [2023-08-03 19:34:36,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702495378] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:34:36,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576475609] [2023-08-03 19:34:36,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 19:34:36,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:34:36,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:34:36,778 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:34:36,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 19:34:36,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-03 19:34:36,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:34:36,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:34:36,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:34:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-03 19:34:36,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:34:36,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576475609] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:34:36,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:34:36,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:34:36,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186664352] [2023-08-03 19:34:36,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:34:36,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:34:36,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:34:36,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:34:36,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:34:36,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 592 [2023-08-03 19:34:36,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 83 transitions, 324 flow. Second operand has 5 states, 5 states have (on average 268.4) internal successors, (1342), 5 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:36,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:34:36,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 592 [2023-08-03 19:34:36,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:34:43,423 INFO L124 PetriNetUnfolderBase]: 90244/114809 cut-off events. [2023-08-03 19:34:43,423 INFO L125 PetriNetUnfolderBase]: For 9168/9168 co-relation queries the response was YES. [2023-08-03 19:34:43,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232573 conditions, 114809 events. 90244/114809 cut-off events. For 9168/9168 co-relation queries the response was YES. Maximal size of possible extension queue 3256. Compared 621962 event pairs, 26459 based on Foata normal form. 36/87506 useless extension candidates. Maximal degree in co-relation 232493. Up to 109784 conditions per place. [2023-08-03 19:34:44,244 INFO L140 encePairwiseOnDemand]: 588/592 looper letters, 95 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2023-08-03 19:34:44,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 108 transitions, 572 flow [2023-08-03 19:34:44,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:34:44,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:34:44,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1419 transitions. [2023-08-03 19:34:44,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793918918918919 [2023-08-03 19:34:44,248 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1419 transitions. [2023-08-03 19:34:44,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1419 transitions. [2023-08-03 19:34:44,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:34:44,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1419 transitions. [2023-08-03 19:34:44,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.8) internal successors, (1419), 5 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:44,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 592.0) internal successors, (3552), 6 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:44,254 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 592.0) internal successors, (3552), 6 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:44,255 INFO L175 Difference]: Start difference. First operand has 78 places, 83 transitions, 324 flow. Second operand 5 states and 1419 transitions. [2023-08-03 19:34:44,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 108 transitions, 572 flow [2023-08-03 19:34:44,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 108 transitions, 542 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-03 19:34:44,266 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 311 flow [2023-08-03 19:34:44,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=311, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2023-08-03 19:34:44,267 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 18 predicate places. [2023-08-03 19:34:44,267 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 311 flow [2023-08-03 19:34:44,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 268.4) internal successors, (1342), 5 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:44,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:34:44,268 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:34:44,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 19:34:44,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:34:44,473 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:34:44,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:34:44,473 INFO L85 PathProgramCache]: Analyzing trace with hash -83032247, now seen corresponding path program 1 times [2023-08-03 19:34:44,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:34:44,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111207164] [2023-08-03 19:34:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:44,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:34:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:44,535 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-03 19:34:44,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:34:44,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111207164] [2023-08-03 19:34:44,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111207164] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:34:44,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447899437] [2023-08-03 19:34:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:44,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:34:44,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:34:44,538 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:34:44,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 19:34:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:44,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:34:44,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:34:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-03 19:34:44,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:34:44,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447899437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:34:44,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:34:44,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:34:44,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909319299] [2023-08-03 19:34:44,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:34:44,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:34:44,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:34:44,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:34:44,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:34:44,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 592 [2023-08-03 19:34:44,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:44,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:34:44,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 592 [2023-08-03 19:34:44,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:34:49,978 INFO L124 PetriNetUnfolderBase]: 69092/88265 cut-off events. [2023-08-03 19:34:49,978 INFO L125 PetriNetUnfolderBase]: For 6295/6295 co-relation queries the response was YES. [2023-08-03 19:34:50,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180229 conditions, 88265 events. 69092/88265 cut-off events. For 6295/6295 co-relation queries the response was YES. Maximal size of possible extension queue 2167. Compared 470905 event pairs, 28600 based on Foata normal form. 0/68614 useless extension candidates. Maximal degree in co-relation 180159. Up to 59120 conditions per place. [2023-08-03 19:34:50,397 INFO L140 encePairwiseOnDemand]: 589/592 looper letters, 110 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2023-08-03 19:34:50,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 121 transitions, 621 flow [2023-08-03 19:34:50,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:34:50,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:34:50,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 901 transitions. [2023-08-03 19:34:50,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073198198198198 [2023-08-03 19:34:50,400 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 901 transitions. [2023-08-03 19:34:50,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 901 transitions. [2023-08-03 19:34:50,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:34:50,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 901 transitions. [2023-08-03 19:34:50,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:50,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:50,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:50,404 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 311 flow. Second operand 3 states and 901 transitions. [2023-08-03 19:34:50,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 121 transitions, 621 flow [2023-08-03 19:34:50,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 121 transitions, 614 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:34:50,409 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 316 flow [2023-08-03 19:34:50,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2023-08-03 19:34:50,410 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 19 predicate places. [2023-08-03 19:34:50,410 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 316 flow [2023-08-03 19:34:50,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:50,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:34:50,410 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:34:50,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-03 19:34:50,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:34:50,617 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:34:50,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:34:50,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1097946406, now seen corresponding path program 1 times [2023-08-03 19:34:50,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:34:50,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247490125] [2023-08-03 19:34:50,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:50,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:34:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:50,678 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-08-03 19:34:50,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:34:50,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247490125] [2023-08-03 19:34:50,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247490125] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:34:50,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759857095] [2023-08-03 19:34:50,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:50,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:34:50,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:34:50,680 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:34:50,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 19:34:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:50,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:34:50,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:34:50,813 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-08-03 19:34:50,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:34:50,833 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-08-03 19:34:50,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759857095] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:34:50,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:34:50,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:34:50,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620733275] [2023-08-03 19:34:50,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:34:50,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:34:50,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:34:50,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:34:50,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:34:50,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 592 [2023-08-03 19:34:50,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 269.4) internal successors, (1347), 5 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:50,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:34:50,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 592 [2023-08-03 19:34:50,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:34:55,658 INFO L124 PetriNetUnfolderBase]: 64158/81919 cut-off events. [2023-08-03 19:34:55,658 INFO L125 PetriNetUnfolderBase]: For 14014/14014 co-relation queries the response was YES. [2023-08-03 19:34:55,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171519 conditions, 81919 events. 64158/81919 cut-off events. For 14014/14014 co-relation queries the response was YES. Maximal size of possible extension queue 2067. Compared 428815 event pairs, 18558 based on Foata normal form. 6/64491 useless extension candidates. Maximal degree in co-relation 171448. Up to 78733 conditions per place. [2023-08-03 19:34:56,337 INFO L140 encePairwiseOnDemand]: 589/592 looper letters, 96 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2023-08-03 19:34:56,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 108 transitions, 558 flow [2023-08-03 19:34:56,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:34:56,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:34:56,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1152 transitions. [2023-08-03 19:34:56,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-08-03 19:34:56,340 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1152 transitions. [2023-08-03 19:34:56,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1152 transitions. [2023-08-03 19:34:56,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:34:56,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1152 transitions. [2023-08-03 19:34:56,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:56,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:56,346 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:56,346 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 316 flow. Second operand 4 states and 1152 transitions. [2023-08-03 19:34:56,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 108 transitions, 558 flow [2023-08-03 19:34:56,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 108 transitions, 556 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:34:56,442 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 312 flow [2023-08-03 19:34:56,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=80, PETRI_TRANSITIONS=83} [2023-08-03 19:34:56,443 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 21 predicate places. [2023-08-03 19:34:56,443 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 312 flow [2023-08-03 19:34:56,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 269.4) internal successors, (1347), 5 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:56,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:34:56,443 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:34:56,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 19:34:56,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 19:34:56,644 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:34:56,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:34:56,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1895103948, now seen corresponding path program 1 times [2023-08-03 19:34:56,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:34:56,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511432154] [2023-08-03 19:34:56,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:56,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:34:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-08-03 19:34:56,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:34:56,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511432154] [2023-08-03 19:34:56,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511432154] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:34:56,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861464641] [2023-08-03 19:34:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:56,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:34:56,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:34:56,743 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:34:56,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 19:34:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:56,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:34:56,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:34:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-08-03 19:34:56,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:34:56,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861464641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:34:56,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:34:56,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:34:56,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847128603] [2023-08-03 19:34:56,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:34:56,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:34:56,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:34:56,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:34:56,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:34:56,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 592 [2023-08-03 19:34:56,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 312 flow. Second operand has 5 states, 5 states have (on average 269.4) internal successors, (1347), 5 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:34:56,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:34:56,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 592 [2023-08-03 19:34:56,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:35:01,027 INFO L124 PetriNetUnfolderBase]: 57246/72645 cut-off events. [2023-08-03 19:35:01,028 INFO L125 PetriNetUnfolderBase]: For 4889/4889 co-relation queries the response was YES. [2023-08-03 19:35:01,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152676 conditions, 72645 events. 57246/72645 cut-off events. For 4889/4889 co-relation queries the response was YES. Maximal size of possible extension queue 1642. Compared 368422 event pairs, 348 based on Foata normal form. 1296/58385 useless extension candidates. Maximal degree in co-relation 152605. Up to 59926 conditions per place. [2023-08-03 19:35:01,425 INFO L140 encePairwiseOnDemand]: 588/592 looper letters, 144 selfloop transitions, 4 changer transitions 0/156 dead transitions. [2023-08-03 19:35:01,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 156 transitions, 754 flow [2023-08-03 19:35:01,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:35:01,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:35:01,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1467 transitions. [2023-08-03 19:35:01,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956081081081081 [2023-08-03 19:35:01,429 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1467 transitions. [2023-08-03 19:35:01,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1467 transitions. [2023-08-03 19:35:01,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:35:01,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1467 transitions. [2023-08-03 19:35:01,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 293.4) internal successors, (1467), 5 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:01,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 592.0) internal successors, (3552), 6 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:01,436 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 592.0) internal successors, (3552), 6 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:01,436 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 312 flow. Second operand 5 states and 1467 transitions. [2023-08-03 19:35:01,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 156 transitions, 754 flow [2023-08-03 19:35:01,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 156 transitions, 742 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:35:01,987 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 317 flow [2023-08-03 19:35:01,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=80, PETRI_TRANSITIONS=83} [2023-08-03 19:35:01,988 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 21 predicate places. [2023-08-03 19:35:01,988 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 317 flow [2023-08-03 19:35:01,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 269.4) internal successors, (1347), 5 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:01,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:35:01,989 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:35:01,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-03 19:35:02,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 19:35:02,197 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:35:02,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:35:02,198 INFO L85 PathProgramCache]: Analyzing trace with hash 664432827, now seen corresponding path program 1 times [2023-08-03 19:35:02,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:35:02,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272406340] [2023-08-03 19:35:02,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:02,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:35:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:35:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-08-03 19:35:02,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:35:02,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272406340] [2023-08-03 19:35:02,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272406340] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:35:02,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41911115] [2023-08-03 19:35:02,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:02,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:35:02,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:35:02,285 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:35:02,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 19:35:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:35:02,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:35:02,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:35:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-08-03 19:35:02,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:35:02,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41911115] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:35:02,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:35:02,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 19:35:02,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328781123] [2023-08-03 19:35:02,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:35:02,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:35:02,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:35:02,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:35:02,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:35:02,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 592 [2023-08-03 19:35:02,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:02,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:35:02,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 592 [2023-08-03 19:35:02,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:35:06,567 INFO L124 PetriNetUnfolderBase]: 54873/70150 cut-off events. [2023-08-03 19:35:06,567 INFO L125 PetriNetUnfolderBase]: For 20786/20786 co-relation queries the response was YES. [2023-08-03 19:35:06,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151585 conditions, 70150 events. 54873/70150 cut-off events. For 20786/20786 co-relation queries the response was YES. Maximal size of possible extension queue 1634. Compared 361524 event pairs, 28148 based on Foata normal form. 0/55710 useless extension candidates. Maximal degree in co-relation 151513. Up to 56482 conditions per place. [2023-08-03 19:35:07,171 INFO L140 encePairwiseOnDemand]: 589/592 looper letters, 111 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2023-08-03 19:35:07,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 121 transitions, 627 flow [2023-08-03 19:35:07,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:35:07,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:35:07,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 901 transitions. [2023-08-03 19:35:07,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073198198198198 [2023-08-03 19:35:07,173 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 901 transitions. [2023-08-03 19:35:07,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 901 transitions. [2023-08-03 19:35:07,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:35:07,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 901 transitions. [2023-08-03 19:35:07,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:07,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:07,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:07,177 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 317 flow. Second operand 3 states and 901 transitions. [2023-08-03 19:35:07,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 121 transitions, 627 flow [2023-08-03 19:35:07,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 121 transitions, 620 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:35:07,260 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 322 flow [2023-08-03 19:35:07,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=81, PETRI_TRANSITIONS=84} [2023-08-03 19:35:07,261 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 22 predicate places. [2023-08-03 19:35:07,261 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 322 flow [2023-08-03 19:35:07,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:07,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:35:07,261 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:35:07,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 19:35:07,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 19:35:07,462 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:35:07,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:35:07,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2043922677, now seen corresponding path program 1 times [2023-08-03 19:35:07,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:35:07,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614834034] [2023-08-03 19:35:07,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:07,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:35:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:35:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-08-03 19:35:07,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:35:07,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614834034] [2023-08-03 19:35:07,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614834034] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:35:07,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146209239] [2023-08-03 19:35:07,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:07,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:35:07,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:35:07,541 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:35:07,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 19:35:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:35:07,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:35:07,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:35:07,716 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-08-03 19:35:07,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:35:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-08-03 19:35:07,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146209239] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:35:07,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:35:07,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:35:07,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014383265] [2023-08-03 19:35:07,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:35:07,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:35:07,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:35:07,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:35:07,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:35:07,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 592 [2023-08-03 19:35:07,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 84 transitions, 322 flow. Second operand has 5 states, 5 states have (on average 272.0) internal successors, (1360), 5 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:07,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:35:07,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 592 [2023-08-03 19:35:07,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:35:11,744 INFO L124 PetriNetUnfolderBase]: 52749/67168 cut-off events. [2023-08-03 19:35:11,745 INFO L125 PetriNetUnfolderBase]: For 10917/10917 co-relation queries the response was YES. [2023-08-03 19:35:11,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145417 conditions, 67168 events. 52749/67168 cut-off events. For 10917/10917 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 336169 event pairs, 13992 based on Foata normal form. 216/53989 useless extension candidates. Maximal degree in co-relation 145344. Up to 54820 conditions per place. [2023-08-03 19:35:12,122 INFO L140 encePairwiseOnDemand]: 589/592 looper letters, 129 selfloop transitions, 3 changer transitions 0/140 dead transitions. [2023-08-03 19:35:12,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 140 transitions, 694 flow [2023-08-03 19:35:12,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:35:12,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:35:12,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1184 transitions. [2023-08-03 19:35:12,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-03 19:35:12,125 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1184 transitions. [2023-08-03 19:35:12,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1184 transitions. [2023-08-03 19:35:12,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:35:12,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1184 transitions. [2023-08-03 19:35:12,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:12,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:12,131 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:12,131 INFO L175 Difference]: Start difference. First operand has 81 places, 84 transitions, 322 flow. Second operand 4 states and 1184 transitions. [2023-08-03 19:35:12,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 140 transitions, 694 flow [2023-08-03 19:35:12,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 140 transitions, 692 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:35:12,937 INFO L231 Difference]: Finished difference. Result has 83 places, 83 transitions, 318 flow [2023-08-03 19:35:12,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=318, PETRI_PLACES=83, PETRI_TRANSITIONS=83} [2023-08-03 19:35:12,938 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 24 predicate places. [2023-08-03 19:35:12,938 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 83 transitions, 318 flow [2023-08-03 19:35:12,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 272.0) internal successors, (1360), 5 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:12,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:35:12,938 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:35:12,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 19:35:13,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-03 19:35:13,144 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:35:13,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:35:13,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1111167918, now seen corresponding path program 1 times [2023-08-03 19:35:13,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:35:13,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038032327] [2023-08-03 19:35:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:13,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:35:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:35:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-08-03 19:35:13,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:35:13,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038032327] [2023-08-03 19:35:13,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038032327] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:35:13,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308712365] [2023-08-03 19:35:13,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:13,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:35:13,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:35:13,264 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:35:13,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 19:35:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:35:13,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:35:13,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:35:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-08-03 19:35:13,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:35:13,444 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-08-03 19:35:13,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308712365] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:35:13,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:35:13,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:35:13,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893089544] [2023-08-03 19:35:13,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:35:13,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:35:13,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:35:13,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:35:13,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:35:13,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 592 [2023-08-03 19:35:13,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 83 transitions, 318 flow. Second operand has 5 states, 5 states have (on average 272.2) internal successors, (1361), 5 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:13,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:35:13,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 592 [2023-08-03 19:35:13,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:35:16,725 INFO L124 PetriNetUnfolderBase]: 43213/55064 cut-off events. [2023-08-03 19:35:16,725 INFO L125 PetriNetUnfolderBase]: For 18512/18512 co-relation queries the response was YES. [2023-08-03 19:35:16,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120032 conditions, 55064 events. 43213/55064 cut-off events. For 18512/18512 co-relation queries the response was YES. Maximal size of possible extension queue 1480. Compared 271316 event pairs, 10467 based on Foata normal form. 864/44839 useless extension candidates. Maximal degree in co-relation 119959. Up to 21779 conditions per place. [2023-08-03 19:35:17,028 INFO L140 encePairwiseOnDemand]: 588/592 looper letters, 141 selfloop transitions, 4 changer transitions 0/153 dead transitions. [2023-08-03 19:35:17,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 153 transitions, 756 flow [2023-08-03 19:35:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:35:17,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:35:17,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1197 transitions. [2023-08-03 19:35:17,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054898648648649 [2023-08-03 19:35:17,031 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1197 transitions. [2023-08-03 19:35:17,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1197 transitions. [2023-08-03 19:35:17,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:35:17,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1197 transitions. [2023-08-03 19:35:17,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 299.25) internal successors, (1197), 4 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:17,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:17,036 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:17,036 INFO L175 Difference]: Start difference. First operand has 83 places, 83 transitions, 318 flow. Second operand 4 states and 1197 transitions. [2023-08-03 19:35:17,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 153 transitions, 756 flow [2023-08-03 19:35:17,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 153 transitions, 750 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:35:17,385 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 332 flow [2023-08-03 19:35:17,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=332, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2023-08-03 19:35:17,386 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 26 predicate places. [2023-08-03 19:35:17,386 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 332 flow [2023-08-03 19:35:17,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 272.2) internal successors, (1361), 5 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:17,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:35:17,387 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:35:17,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 19:35:17,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 19:35:17,593 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:35:17,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:35:17,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1825714867, now seen corresponding path program 1 times [2023-08-03 19:35:17,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:35:17,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939960315] [2023-08-03 19:35:17,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:17,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:35:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:35:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-08-03 19:35:17,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:35:17,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939960315] [2023-08-03 19:35:17,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939960315] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:35:17,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515605313] [2023-08-03 19:35:17,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:17,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:35:17,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:35:17,709 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:35:17,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 19:35:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:35:17,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:35:17,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:35:17,902 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-08-03 19:35:17,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:35:17,917 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-08-03 19:35:17,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515605313] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:35:17,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:35:17,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:35:17,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644862593] [2023-08-03 19:35:17,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:35:17,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:35:17,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:35:17,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:35:17,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:35:17,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 592 [2023-08-03 19:35:17,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 332 flow. Second operand has 5 states, 5 states have (on average 272.8) internal successors, (1364), 5 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:17,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:35:17,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 592 [2023-08-03 19:35:17,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:35:21,367 INFO L124 PetriNetUnfolderBase]: 43181/55009 cut-off events. [2023-08-03 19:35:21,367 INFO L125 PetriNetUnfolderBase]: For 24283/24283 co-relation queries the response was YES. [2023-08-03 19:35:21,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125172 conditions, 55009 events. 43181/55009 cut-off events. For 24283/24283 co-relation queries the response was YES. Maximal size of possible extension queue 1484. Compared 270506 event pairs, 25747 based on Foata normal form. 25/43737 useless extension candidates. Maximal degree in co-relation 125098. Up to 51140 conditions per place. [2023-08-03 19:35:21,942 INFO L140 encePairwiseOnDemand]: 588/592 looper letters, 141 selfloop transitions, 3 changer transitions 2/154 dead transitions. [2023-08-03 19:35:21,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 154 transitions, 772 flow [2023-08-03 19:35:21,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:35:21,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:35:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1197 transitions. [2023-08-03 19:35:21,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054898648648649 [2023-08-03 19:35:21,945 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1197 transitions. [2023-08-03 19:35:21,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1197 transitions. [2023-08-03 19:35:21,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:35:21,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1197 transitions. [2023-08-03 19:35:21,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 299.25) internal successors, (1197), 4 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:21,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:21,949 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:21,949 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 332 flow. Second operand 4 states and 1197 transitions. [2023-08-03 19:35:21,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 154 transitions, 772 flow [2023-08-03 19:35:22,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 154 transitions, 768 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:35:22,285 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 336 flow [2023-08-03 19:35:22,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2023-08-03 19:35:22,286 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 30 predicate places. [2023-08-03 19:35:22,286 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 336 flow [2023-08-03 19:35:22,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 272.8) internal successors, (1364), 5 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:22,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:35:22,286 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:35:22,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-03 19:35:22,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-03 19:35:22,487 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:35:22,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:35:22,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1144591647, now seen corresponding path program 1 times [2023-08-03 19:35:22,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:35:22,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361302741] [2023-08-03 19:35:22,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:22,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:35:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:35:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-08-03 19:35:22,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:35:22,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361302741] [2023-08-03 19:35:22,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361302741] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:35:22,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:35:22,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 19:35:22,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517682336] [2023-08-03 19:35:22,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:35:22,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:35:22,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:35:22,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:35:22,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:35:22,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 592 [2023-08-03 19:35:22,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 272.75) internal successors, (1091), 4 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:22,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:35:22,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 592 [2023-08-03 19:35:22,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:35:29,418 INFO L124 PetriNetUnfolderBase]: 77184/99032 cut-off events. [2023-08-03 19:35:29,418 INFO L125 PetriNetUnfolderBase]: For 47644/47644 co-relation queries the response was YES. [2023-08-03 19:35:29,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222439 conditions, 99032 events. 77184/99032 cut-off events. For 47644/47644 co-relation queries the response was YES. Maximal size of possible extension queue 2758. Compared 553262 event pairs, 13873 based on Foata normal form. 0/79933 useless extension candidates. Maximal degree in co-relation 222363. Up to 52041 conditions per place. [2023-08-03 19:35:30,045 INFO L140 encePairwiseOnDemand]: 585/592 looper letters, 146 selfloop transitions, 6 changer transitions 0/160 dead transitions. [2023-08-03 19:35:30,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 160 transitions, 935 flow [2023-08-03 19:35:30,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:35:30,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:35:30,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1189 transitions. [2023-08-03 19:35:30,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021114864864865 [2023-08-03 19:35:30,047 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1189 transitions. [2023-08-03 19:35:30,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1189 transitions. [2023-08-03 19:35:30,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:35:30,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1189 transitions. [2023-08-03 19:35:30,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.25) internal successors, (1189), 4 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:30,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:30,052 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:30,052 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 336 flow. Second operand 4 states and 1189 transitions. [2023-08-03 19:35:30,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 160 transitions, 935 flow [2023-08-03 19:35:30,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 160 transitions, 915 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-03 19:35:30,296 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 378 flow [2023-08-03 19:35:30,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=378, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2023-08-03 19:35:30,297 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 33 predicate places. [2023-08-03 19:35:30,297 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 378 flow [2023-08-03 19:35:30,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.75) internal successors, (1091), 4 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:30,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:35:30,298 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:35:30,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-03 19:35:30,298 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:35:30,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:35:30,298 INFO L85 PathProgramCache]: Analyzing trace with hash -464683585, now seen corresponding path program 1 times [2023-08-03 19:35:30,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:35:30,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350976642] [2023-08-03 19:35:30,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:30,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:35:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:35:30,421 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-08-03 19:35:30,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:35:30,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350976642] [2023-08-03 19:35:30,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350976642] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:35:30,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:35:30,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 19:35:30,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768921151] [2023-08-03 19:35:30,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:35:30,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:35:30,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:35:30,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:35:30,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:35:30,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 592 [2023-08-03 19:35:30,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 272.75) internal successors, (1091), 4 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:30,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:35:30,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 592 [2023-08-03 19:35:30,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:35:42,975 INFO L124 PetriNetUnfolderBase]: 140295/178777 cut-off events. [2023-08-03 19:35:42,975 INFO L125 PetriNetUnfolderBase]: For 101882/101882 co-relation queries the response was YES. [2023-08-03 19:35:43,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434615 conditions, 178777 events. 140295/178777 cut-off events. For 101882/101882 co-relation queries the response was YES. Maximal size of possible extension queue 4552. Compared 1030781 event pairs, 29355 based on Foata normal form. 0/157180 useless extension candidates. Maximal degree in co-relation 434538. Up to 94829 conditions per place. [2023-08-03 19:35:44,111 INFO L140 encePairwiseOnDemand]: 585/592 looper letters, 157 selfloop transitions, 8 changer transitions 0/173 dead transitions. [2023-08-03 19:35:44,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 173 transitions, 1054 flow [2023-08-03 19:35:44,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:35:44,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:35:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1192 transitions. [2023-08-03 19:35:44,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2023-08-03 19:35:44,113 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1192 transitions. [2023-08-03 19:35:44,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1192 transitions. [2023-08-03 19:35:44,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:35:44,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1192 transitions. [2023-08-03 19:35:44,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:44,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:44,117 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:44,117 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 378 flow. Second operand 4 states and 1192 transitions. [2023-08-03 19:35:44,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 173 transitions, 1054 flow [2023-08-03 19:35:44,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 173 transitions, 1054 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:35:44,496 INFO L231 Difference]: Finished difference. Result has 98 places, 97 transitions, 456 flow [2023-08-03 19:35:44,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=456, PETRI_PLACES=98, PETRI_TRANSITIONS=97} [2023-08-03 19:35:44,496 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 39 predicate places. [2023-08-03 19:35:44,496 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 97 transitions, 456 flow [2023-08-03 19:35:44,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.75) internal successors, (1091), 4 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:44,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:35:44,497 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:35:44,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-03 19:35:44,497 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:35:44,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:35:44,497 INFO L85 PathProgramCache]: Analyzing trace with hash -368303226, now seen corresponding path program 1 times [2023-08-03 19:35:44,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:35:44,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816403918] [2023-08-03 19:35:44,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:44,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:35:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:35:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-08-03 19:35:44,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:35:44,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816403918] [2023-08-03 19:35:44,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816403918] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:35:44,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:35:44,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 19:35:44,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665131551] [2023-08-03 19:35:44,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:35:44,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:35:44,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:35:44,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:35:44,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:35:44,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 592 [2023-08-03 19:35:44,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 97 transitions, 456 flow. Second operand has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:44,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:35:44,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 592 [2023-08-03 19:35:44,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:09,940 INFO L124 PetriNetUnfolderBase]: 245132/315245 cut-off events. [2023-08-03 19:36:09,941 INFO L125 PetriNetUnfolderBase]: For 245697/245697 co-relation queries the response was YES. [2023-08-03 19:36:11,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815901 conditions, 315245 events. 245132/315245 cut-off events. For 245697/245697 co-relation queries the response was YES. Maximal size of possible extension queue 8357. Compared 1988244 event pairs, 57453 based on Foata normal form. 4159/302373 useless extension candidates. Maximal degree in co-relation 815821. Up to 172429 conditions per place. [2023-08-03 19:36:12,611 INFO L140 encePairwiseOnDemand]: 585/592 looper letters, 153 selfloop transitions, 8 changer transitions 0/169 dead transitions. [2023-08-03 19:36:12,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 169 transitions, 1088 flow [2023-08-03 19:36:12,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:36:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:36:12,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1187 transitions. [2023-08-03 19:36:12,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012668918918919 [2023-08-03 19:36:12,614 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1187 transitions. [2023-08-03 19:36:12,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1187 transitions. [2023-08-03 19:36:12,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:12,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1187 transitions. [2023-08-03 19:36:12,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.75) internal successors, (1187), 4 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:12,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:12,619 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:12,619 INFO L175 Difference]: Start difference. First operand has 98 places, 97 transitions, 456 flow. Second operand 4 states and 1187 transitions. [2023-08-03 19:36:12,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 169 transitions, 1088 flow [2023-08-03 19:36:15,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 169 transitions, 1088 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:36:15,115 INFO L231 Difference]: Finished difference. Result has 103 places, 100 transitions, 503 flow [2023-08-03 19:36:15,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=503, PETRI_PLACES=103, PETRI_TRANSITIONS=100} [2023-08-03 19:36:15,115 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 44 predicate places. [2023-08-03 19:36:15,115 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 100 transitions, 503 flow [2023-08-03 19:36:15,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:15,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:15,116 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:36:15,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-03 19:36:15,116 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:36:15,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:15,116 INFO L85 PathProgramCache]: Analyzing trace with hash 654744102, now seen corresponding path program 1 times [2023-08-03 19:36:15,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:15,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31176955] [2023-08-03 19:36:15,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:15,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:15,178 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-08-03 19:36:15,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:15,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31176955] [2023-08-03 19:36:15,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31176955] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:36:15,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:36:15,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 19:36:15,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124466518] [2023-08-03 19:36:15,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:36:15,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:36:15,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:15,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:36:15,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:36:15,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 592 [2023-08-03 19:36:15,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 100 transitions, 503 flow. Second operand has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:15,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:15,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 592 [2023-08-03 19:36:15,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:17,645 INFO L124 PetriNetUnfolderBase]: 505439/652710 cut-off events. [2023-08-03 19:37:17,645 INFO L125 PetriNetUnfolderBase]: For 591976/591976 co-relation queries the response was YES. [2023-08-03 19:37:20,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1739284 conditions, 652710 events. 505439/652710 cut-off events. For 591976/591976 co-relation queries the response was YES. Maximal size of possible extension queue 16364. Compared 4480300 event pairs, 184385 based on Foata normal form. 4788/639347 useless extension candidates. Maximal degree in co-relation 1739201. Up to 302994 conditions per place. [2023-08-03 19:37:22,886 INFO L140 encePairwiseOnDemand]: 584/592 looper letters, 188 selfloop transitions, 6 changer transitions 8/210 dead transitions. [2023-08-03 19:37:22,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 210 transitions, 1391 flow [2023-08-03 19:37:22,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:37:22,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:37:22,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1478 transitions. [2023-08-03 19:37:22,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49932432432432433 [2023-08-03 19:37:22,888 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1478 transitions. [2023-08-03 19:37:22,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1478 transitions. [2023-08-03 19:37:22,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:22,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1478 transitions. [2023-08-03 19:37:22,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 295.6) internal successors, (1478), 5 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:22,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 592.0) internal successors, (3552), 6 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:22,893 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 592.0) internal successors, (3552), 6 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:22,893 INFO L175 Difference]: Start difference. First operand has 103 places, 100 transitions, 503 flow. Second operand 5 states and 1478 transitions. [2023-08-03 19:37:22,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 210 transitions, 1391 flow [2023-08-03 19:38:26,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 210 transitions, 1386 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:38:26,856 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 535 flow [2023-08-03 19:38:26,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=535, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2023-08-03 19:38:26,856 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 49 predicate places. [2023-08-03 19:38:26,856 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 535 flow [2023-08-03 19:38:26,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:26,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:38:26,857 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:38:26,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-03 19:38:26,857 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:38:26,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:38:26,857 INFO L85 PathProgramCache]: Analyzing trace with hash -121258618, now seen corresponding path program 1 times [2023-08-03 19:38:26,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:38:26,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350847148] [2023-08-03 19:38:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:26,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:38:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-08-03 19:38:26,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:38:26,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350847148] [2023-08-03 19:38:26,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350847148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:38:26,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:38:26,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 19:38:26,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813143690] [2023-08-03 19:38:26,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:38:26,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:38:26,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:38:26,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:38:26,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:38:26,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 592 [2023-08-03 19:38:26,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 535 flow. Second operand has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:26,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:38:26,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 592 [2023-08-03 19:38:26,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:39:56,055 INFO L124 PetriNetUnfolderBase]: 680470/880526 cut-off events. [2023-08-03 19:39:56,055 INFO L125 PetriNetUnfolderBase]: For 986056/986056 co-relation queries the response was YES. [2023-08-03 19:40:02,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2455214 conditions, 880526 events. 680470/880526 cut-off events. For 986056/986056 co-relation queries the response was YES. Maximal size of possible extension queue 21714. Compared 6216698 event pairs, 253193 based on Foata normal form. 7066/887549 useless extension candidates. Maximal degree in co-relation 2455128. Up to 627237 conditions per place. [2023-08-03 19:40:07,191 INFO L140 encePairwiseOnDemand]: 585/592 looper letters, 159 selfloop transitions, 9 changer transitions 5/181 dead transitions. [2023-08-03 19:40:07,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 181 transitions, 1260 flow [2023-08-03 19:40:07,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:40:07,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:40:07,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1192 transitions. [2023-08-03 19:40:07,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2023-08-03 19:40:07,195 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1192 transitions. [2023-08-03 19:40:07,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1192 transitions. [2023-08-03 19:40:07,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:07,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1192 transitions. [2023-08-03 19:40:07,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:07,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:07,201 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:07,201 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 535 flow. Second operand 4 states and 1192 transitions. [2023-08-03 19:40:07,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 181 transitions, 1260 flow [2023-08-03 19:41:03,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 181 transitions, 1250 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 19:41:03,368 INFO L231 Difference]: Finished difference. Result has 111 places, 105 transitions, 586 flow [2023-08-03 19:41:03,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=586, PETRI_PLACES=111, PETRI_TRANSITIONS=105} [2023-08-03 19:41:03,368 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 52 predicate places. [2023-08-03 19:41:03,368 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 105 transitions, 586 flow [2023-08-03 19:41:03,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:03,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:03,369 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:03,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-03 19:41:03,369 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:41:03,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:03,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1538510931, now seen corresponding path program 1 times [2023-08-03 19:41:03,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:03,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492800498] [2023-08-03 19:41:03,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:03,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-08-03 19:41:03,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:03,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492800498] [2023-08-03 19:41:03,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492800498] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:41:03,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:41:03,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 19:41:03,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535429123] [2023-08-03 19:41:03,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:41:03,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:41:03,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:03,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:41:03,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:41:03,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 592 [2023-08-03 19:41:03,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 105 transitions, 586 flow. Second operand has 4 states, 4 states have (on average 273.75) internal successors, (1095), 4 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:41:03,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:03,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 592 [2023-08-03 19:41:03,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand