/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-subst.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:33:53,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:33:53,126 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:33:53,131 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:33:53,131 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:33:53,132 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:33:53,132 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:33:53,156 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:33:53,156 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:33:53,160 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:33:53,160 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:33:53,160 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:33:53,161 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:33:53,162 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:33:53,162 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:33:53,162 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:33:53,162 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:33:53,163 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:33:53,163 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:33:53,163 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:33:53,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:33:53,163 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:33:53,163 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:33:53,164 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:33:53,164 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:33:53,165 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:33:53,165 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:33:53,165 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:33:53,166 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:33:53,166 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:33:53,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:33:53,166 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:33:53,167 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:33:53,167 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:33:53,167 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:33:53,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:33:53,167 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:33:53,167 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:33:53,167 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:33:53,167 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:33:53,167 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:33:53,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:33:53,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:33:53,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:33:53,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:33:53,319 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:33:53,319 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:33:53,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-chromosome-subst.wvr_bound2.c [2023-08-03 19:33:54,252 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:33:54,396 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:33:54,397 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-chromosome-subst.wvr_bound2.c [2023-08-03 19:33:54,402 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd5d705a7/2454f5972c9649a783f0b369f6b8990c/FLAG057820f45 [2023-08-03 19:33:54,411 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd5d705a7/2454f5972c9649a783f0b369f6b8990c [2023-08-03 19:33:54,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:33:54,416 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:33:54,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:33:54,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:33:54,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:33:54,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:33:54" (1/1) ... [2023-08-03 19:33:54,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bde0336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:54, skipping insertion in model container [2023-08-03 19:33:54,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:33:54" (1/1) ... [2023-08-03 19:33:54,444 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:33:54,570 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-subst.wvr_bound2.c[3340,3353] [2023-08-03 19:33:54,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:33:54,579 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:33:54,597 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-subst.wvr_bound2.c[3340,3353] [2023-08-03 19:33:54,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:33:54,608 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:33:54,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:54 WrapperNode [2023-08-03 19:33:54,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:33:54,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:33:54,609 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:33:54,609 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:33:54,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:54" (1/1) ... [2023-08-03 19:33:54,619 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:54" (1/1) ... [2023-08-03 19:33:54,640 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 329 [2023-08-03 19:33:54,640 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:33:54,641 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:33:54,641 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:33:54,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:33:54,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:54" (1/1) ... [2023-08-03 19:33:54,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:54" (1/1) ... [2023-08-03 19:33:54,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:54" (1/1) ... [2023-08-03 19:33:54,654 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:54" (1/1) ... [2023-08-03 19:33:54,660 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:54" (1/1) ... [2023-08-03 19:33:54,664 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:54" (1/1) ... [2023-08-03 19:33:54,665 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:54" (1/1) ... [2023-08-03 19:33:54,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:54" (1/1) ... [2023-08-03 19:33:54,668 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:33:54,669 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:33:54,669 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:33:54,669 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:33:54,670 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:54" (1/1) ... [2023-08-03 19:33:54,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:33:54,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:33:54,690 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 19:33:54,706 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 19:33:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:33:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:33:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:33:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:33:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:33:54,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:33:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:33:54,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:33:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:33:54,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:33:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:33:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 19:33:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:33:54,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:33:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:33:54,724 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 19:33:54,798 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:33:54,799 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:33:55,150 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:33:55,157 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:33:55,157 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-03 19:33:55,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:33:55 BoogieIcfgContainer [2023-08-03 19:33:55,159 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:33:55,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:33:55,160 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:33:55,162 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:33:55,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:33:54" (1/3) ... [2023-08-03 19:33:55,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62244238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:33:55, skipping insertion in model container [2023-08-03 19:33:55,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:33:54" (2/3) ... [2023-08-03 19:33:55,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62244238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:33:55, skipping insertion in model container [2023-08-03 19:33:55,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:33:55" (3/3) ... [2023-08-03 19:33:55,164 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-chromosome-subst.wvr_bound2.c [2023-08-03 19:33:55,169 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:33:55,175 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:33:55,175 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:33:55,175 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:33:55,246 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 19:33:55,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 372 transitions, 786 flow [2023-08-03 19:33:55,460 INFO L124 PetriNetUnfolderBase]: 137/1022 cut-off events. [2023-08-03 19:33:55,460 INFO L125 PetriNetUnfolderBase]: For 36/40 co-relation queries the response was YES. [2023-08-03 19:33:55,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 1022 events. 137/1022 cut-off events. For 36/40 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 5927 event pairs, 0 based on Foata normal form. 0/875 useless extension candidates. Maximal degree in co-relation 583. Up to 16 conditions per place. [2023-08-03 19:33:55,470 INFO L82 GeneralOperation]: Start removeDead. Operand has 335 places, 372 transitions, 786 flow [2023-08-03 19:33:55,477 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 335 places, 372 transitions, 786 flow [2023-08-03 19:33:55,479 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:33:55,484 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 335 places, 372 transitions, 786 flow [2023-08-03 19:33:55,486 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 335 places, 372 transitions, 786 flow [2023-08-03 19:33:55,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 372 transitions, 786 flow [2023-08-03 19:33:55,592 INFO L124 PetriNetUnfolderBase]: 137/1022 cut-off events. [2023-08-03 19:33:55,592 INFO L125 PetriNetUnfolderBase]: For 36/40 co-relation queries the response was YES. [2023-08-03 19:33:55,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 1022 events. 137/1022 cut-off events. For 36/40 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 5927 event pairs, 0 based on Foata normal form. 0/875 useless extension candidates. Maximal degree in co-relation 583. Up to 16 conditions per place. [2023-08-03 19:33:55,627 INFO L119 LiptonReduction]: Number of co-enabled transitions 34560 [2023-08-03 19:34:02,272 INFO L134 LiptonReduction]: Checked pairs total: 44211 [2023-08-03 19:34:02,273 INFO L136 LiptonReduction]: Total number of compositions: 391 [2023-08-03 19:34:02,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:34:02,295 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;@56e2b81d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:34:02,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:34:02,301 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:34:02,301 INFO L124 PetriNetUnfolderBase]: 4/37 cut-off events. [2023-08-03 19:34:02,301 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:34:02,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:34:02,302 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:34:02,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:34:02,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:34:02,306 INFO L85 PathProgramCache]: Analyzing trace with hash 925503642, now seen corresponding path program 1 times [2023-08-03 19:34:02,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:34:02,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44919432] [2023-08-03 19:34:02,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:02,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:34:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:02,610 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 19:34:02,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:34:02,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44919432] [2023-08-03 19:34:02,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44919432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:34:02,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:34:02,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:34:02,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527101239] [2023-08-03 19:34:02,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:34:02,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:34:02,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:34:02,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:34:02,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:34:02,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 763 [2023-08-03 19:34:02,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 63 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states 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 19:34:02,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:34:02,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 763 [2023-08-03 19:34:02,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:34:03,326 INFO L124 PetriNetUnfolderBase]: 6720/9994 cut-off events. [2023-08-03 19:34:03,327 INFO L125 PetriNetUnfolderBase]: For 601/601 co-relation queries the response was YES. [2023-08-03 19:34:03,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19914 conditions, 9994 events. 6720/9994 cut-off events. For 601/601 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54053 event pairs, 5080 based on Foata normal form. 216/7988 useless extension candidates. Maximal degree in co-relation 16601. Up to 9456 conditions per place. [2023-08-03 19:34:03,364 INFO L140 encePairwiseOnDemand]: 753/763 looper letters, 50 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2023-08-03 19:34:03,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 280 flow [2023-08-03 19:34:03,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:34:03,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:34:03,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1016 transitions. [2023-08-03 19:34:03,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4438619484491044 [2023-08-03 19:34:03,375 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1016 transitions. [2023-08-03 19:34:03,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1016 transitions. [2023-08-03 19:34:03,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:34:03,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1016 transitions. [2023-08-03 19:34:03,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states 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 19:34:03,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 763.0) internal successors, (3052), 4 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states 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 19:34:03,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 763.0) internal successors, (3052), 4 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states 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 19:34:03,389 INFO L175 Difference]: Start difference. First operand has 53 places, 63 transitions, 168 flow. Second operand 3 states and 1016 transitions. [2023-08-03 19:34:03,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 280 flow [2023-08-03 19:34:03,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 280 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:34:03,395 INFO L231 Difference]: Finished difference. Result has 55 places, 63 transitions, 194 flow [2023-08-03 19:34:03,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=55, PETRI_TRANSITIONS=63} [2023-08-03 19:34:03,398 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-08-03 19:34:03,398 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 63 transitions, 194 flow [2023-08-03 19:34:03,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states 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 19:34:03,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:34:03,399 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:34:03,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:34:03,399 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:34:03,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:34:03,399 INFO L85 PathProgramCache]: Analyzing trace with hash -200412885, now seen corresponding path program 1 times [2023-08-03 19:34:03,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:34:03,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564188829] [2023-08-03 19:34:03,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:03,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:34:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 19:34:03,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:34:03,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564188829] [2023-08-03 19:34:03,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564188829] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:34:03,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870511173] [2023-08-03 19:34:03,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:03,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:34:03,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:34:03,515 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 19:34:03,538 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 19:34:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:03,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-03 19:34:03,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:34:03,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 19:34:03,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:34:03,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 19:34:03,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870511173] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:34:03,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:34:03,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-03 19:34:03,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853963960] [2023-08-03 19:34:03,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:34:03,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 19:34:03,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:34:03,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 19:34:03,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-03 19:34:03,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 763 [2023-08-03 19:34:03,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 63 transitions, 194 flow. Second operand has 8 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states 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 19:34:03,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:34:03,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 763 [2023-08-03 19:34:03,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:34:04,429 INFO L124 PetriNetUnfolderBase]: 6720/10003 cut-off events. [2023-08-03 19:34:04,430 INFO L125 PetriNetUnfolderBase]: For 601/601 co-relation queries the response was YES. [2023-08-03 19:34:04,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19956 conditions, 10003 events. 6720/10003 cut-off events. For 601/601 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54077 event pairs, 5080 based on Foata normal form. 6/7789 useless extension candidates. Maximal degree in co-relation 19904. Up to 9456 conditions per place. [2023-08-03 19:34:04,463 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 50 selfloop transitions, 15 changer transitions 0/72 dead transitions. [2023-08-03 19:34:04,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 72 transitions, 360 flow [2023-08-03 19:34:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 19:34:04,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 19:34:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1946 transitions. [2023-08-03 19:34:04,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42507645259938837 [2023-08-03 19:34:04,468 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1946 transitions. [2023-08-03 19:34:04,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1946 transitions. [2023-08-03 19:34:04,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:34:04,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1946 transitions. [2023-08-03 19:34:04,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 324.3333333333333) internal successors, (1946), 6 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 19:34:04,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 763.0) internal successors, (5341), 7 states have internal predecessors, (5341), 0 states have call successors, (0), 0 states 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 19:34:04,479 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 763.0) internal successors, (5341), 7 states have internal predecessors, (5341), 0 states have call successors, (0), 0 states 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 19:34:04,479 INFO L175 Difference]: Start difference. First operand has 55 places, 63 transitions, 194 flow. Second operand 6 states and 1946 transitions. [2023-08-03 19:34:04,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 72 transitions, 360 flow [2023-08-03 19:34:04,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:34:04,483 INFO L231 Difference]: Finished difference. Result has 62 places, 72 transitions, 284 flow [2023-08-03 19:34:04,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=62, PETRI_TRANSITIONS=72} [2023-08-03 19:34:04,483 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2023-08-03 19:34:04,483 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 72 transitions, 284 flow [2023-08-03 19:34:04,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states 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 19:34:04,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:34:04,485 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:34:04,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 19:34:04,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:34:04,694 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:34:04,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:34:04,694 INFO L85 PathProgramCache]: Analyzing trace with hash -897636774, now seen corresponding path program 2 times [2023-08-03 19:34:04,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:34:04,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497618135] [2023-08-03 19:34:04,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:04,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:34:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 19:34:04,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:34:04,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497618135] [2023-08-03 19:34:04,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497618135] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:34:04,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11271856] [2023-08-03 19:34:04,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:34:04,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:34:04,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:34:04,875 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 19:34:04,877 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 19:34:04,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:34:04,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:34:04,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:34:04,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:34:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 19:34:05,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:34:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 19:34:05,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11271856] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:34:05,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:34:05,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-03 19:34:05,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786089653] [2023-08-03 19:34:05,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:34:05,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-03 19:34:05,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:34:05,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-03 19:34:05,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-08-03 19:34:05,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 763 [2023-08-03 19:34:05,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 72 transitions, 284 flow. Second operand has 17 states, 17 states have (on average 313.47058823529414) internal successors, (5329), 17 states have internal predecessors, (5329), 0 states have call successors, (0), 0 states 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 19:34:05,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:34:05,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 763 [2023-08-03 19:34:05,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:34:06,101 INFO L124 PetriNetUnfolderBase]: 6720/10006 cut-off events. [2023-08-03 19:34:06,101 INFO L125 PetriNetUnfolderBase]: For 605/605 co-relation queries the response was YES. [2023-08-03 19:34:06,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19998 conditions, 10006 events. 6720/10006 cut-off events. For 605/605 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54040 event pairs, 5080 based on Foata normal form. 1/7786 useless extension candidates. Maximal degree in co-relation 19895. Up to 9456 conditions per place. [2023-08-03 19:34:06,131 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 50 selfloop transitions, 18 changer transitions 0/75 dead transitions. [2023-08-03 19:34:06,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 438 flow [2023-08-03 19:34:06,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 19:34:06,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 19:34:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2255 transitions. [2023-08-03 19:34:06,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222055794794982 [2023-08-03 19:34:06,136 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2255 transitions. [2023-08-03 19:34:06,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2255 transitions. [2023-08-03 19:34:06,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:34:06,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2255 transitions. [2023-08-03 19:34:06,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.14285714285717) internal successors, (2255), 7 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states 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 19:34:06,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 763.0) internal successors, (6104), 8 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states 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 19:34:06,148 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 763.0) internal successors, (6104), 8 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states 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 19:34:06,148 INFO L175 Difference]: Start difference. First operand has 62 places, 72 transitions, 284 flow. Second operand 7 states and 2255 transitions. [2023-08-03 19:34:06,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 438 flow [2023-08-03 19:34:06,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 414 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-03 19:34:06,151 INFO L231 Difference]: Finished difference. Result has 68 places, 75 transitions, 328 flow [2023-08-03 19:34:06,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=328, PETRI_PLACES=68, PETRI_TRANSITIONS=75} [2023-08-03 19:34:06,152 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2023-08-03 19:34:06,152 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 75 transitions, 328 flow [2023-08-03 19:34:06,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 313.47058823529414) internal successors, (5329), 17 states have internal predecessors, (5329), 0 states have call successors, (0), 0 states 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 19:34:06,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:34:06,154 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:34:06,163 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 19:34:06,363 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,SelfDestructingSolverStorable2 [2023-08-03 19:34:06,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:34:06,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:34:06,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1947000725, now seen corresponding path program 3 times [2023-08-03 19:34:06,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:34:06,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928661768] [2023-08-03 19:34:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:06,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:34:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:34:06,431 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:34:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:34:06,490 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:34:06,491 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:34:06,491 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 19:34:06,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 19:34:06,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:34:06,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:34:06,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 19:34:06,493 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-03 19:34:06,494 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:34:06,494 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:34:06,526 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 19:34:06,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 464 places, 519 transitions, 1128 flow [2023-08-03 19:34:07,361 INFO L124 PetriNetUnfolderBase]: 1040/5512 cut-off events. [2023-08-03 19:34:07,361 INFO L125 PetriNetUnfolderBase]: For 602/632 co-relation queries the response was YES. [2023-08-03 19:34:07,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6186 conditions, 5512 events. 1040/5512 cut-off events. For 602/632 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 49132 event pairs, 22 based on Foata normal form. 0/4716 useless extension candidates. Maximal degree in co-relation 3310. Up to 192 conditions per place. [2023-08-03 19:34:07,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 464 places, 519 transitions, 1128 flow [2023-08-03 19:34:07,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 464 places, 519 transitions, 1128 flow [2023-08-03 19:34:07,491 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:34:07,491 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 464 places, 519 transitions, 1128 flow [2023-08-03 19:34:07,492 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 464 places, 519 transitions, 1128 flow [2023-08-03 19:34:07,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 464 places, 519 transitions, 1128 flow [2023-08-03 19:34:08,375 INFO L124 PetriNetUnfolderBase]: 1040/5512 cut-off events. [2023-08-03 19:34:08,376 INFO L125 PetriNetUnfolderBase]: For 602/632 co-relation queries the response was YES. [2023-08-03 19:34:08,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6186 conditions, 5512 events. 1040/5512 cut-off events. For 602/632 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 49132 event pairs, 22 based on Foata normal form. 0/4716 useless extension candidates. Maximal degree in co-relation 3310. Up to 192 conditions per place. [2023-08-03 19:34:08,667 INFO L119 LiptonReduction]: Number of co-enabled transitions 111240 [2023-08-03 19:34:16,589 INFO L134 LiptonReduction]: Checked pairs total: 160586 [2023-08-03 19:34:16,589 INFO L136 LiptonReduction]: Total number of compositions: 532 [2023-08-03 19:34:16,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:34:16,591 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;@56e2b81d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:34:16,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:34:16,595 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:34:16,595 INFO L124 PetriNetUnfolderBase]: 5/50 cut-off events. [2023-08-03 19:34:16,595 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 19:34:16,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:34:16,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:34:16,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:34:16,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:34:16,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1168734112, now seen corresponding path program 1 times [2023-08-03 19:34:16,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:34:16,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539669553] [2023-08-03 19:34:16,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:34:16,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:34:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:34:16,633 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 19:34:16,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:34:16,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539669553] [2023-08-03 19:34:16,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539669553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:34:16,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:34:16,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:34:16,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829239362] [2023-08-03 19:34:16,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:34:16,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:34:16,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:34:16,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:34:16,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:34:16,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 441 out of 1051 [2023-08-03 19:34:16,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 100 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 444.3333333333333) internal successors, (1333), 3 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states 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 19:34:16,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:34:16,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 441 of 1051 [2023-08-03 19:34:16,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand