/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 13:33:50,947 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 13:33:50,986 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 13:33:50,989 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 13:33:50,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 13:33:51,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 13:33:51,005 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 13:33:51,005 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 13:33:51,005 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 13:33:51,006 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 13:33:51,006 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 13:33:51,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 13:33:51,007 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 13:33:51,007 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 13:33:51,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 13:33:51,007 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 13:33:51,007 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 13:33:51,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 13:33:51,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 13:33:51,008 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 13:33:51,008 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 13:33:51,009 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 13:33:51,009 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 13:33:51,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 13:33:51,010 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 13:33:51,010 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 13:33:51,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 13:33:51,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 13:33:51,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 13:33:51,011 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 13:33:51,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 13:33:51,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 13:33:51,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 13:33:51,011 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 13:33:51,012 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 13:33:51,012 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 13:33:51,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 13:33:51,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 13:33:51,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 13:33:51,241 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 13:33:51,241 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 13:33:51,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c [2023-08-27 13:33:52,209 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 13:33:52,342 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 13:33:52,342 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c [2023-08-27 13:33:52,347 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b73c607e/6e8b2dd76c314b26809323a7e539a8fc/FLAG793686070 [2023-08-27 13:33:52,358 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b73c607e/6e8b2dd76c314b26809323a7e539a8fc [2023-08-27 13:33:52,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 13:33:52,364 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 13:33:52,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 13:33:52,365 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 13:33:52,367 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 13:33:52,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:33:52" (1/1) ... [2023-08-27 13:33:52,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a8cff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:33:52, skipping insertion in model container [2023-08-27 13:33:52,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:33:52" (1/1) ... [2023-08-27 13:33:52,388 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 13:33:52,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 13:33:52,497 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 13:33:52,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 13:33:52,521 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 13:33:52,521 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 13:33:52,525 INFO L206 MainTranslator]: Completed translation [2023-08-27 13:33:52,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:33:52 WrapperNode [2023-08-27 13:33:52,525 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 13:33:52,526 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 13:33:52,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 13:33:52,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 13:33:52,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:33:52" (1/1) ... [2023-08-27 13:33:52,548 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:33:52" (1/1) ... [2023-08-27 13:33:52,578 INFO L138 Inliner]: procedures = 29, calls = 96, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 374 [2023-08-27 13:33:52,578 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 13:33:52,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 13:33:52,579 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 13:33:52,579 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 13:33:52,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:33:52" (1/1) ... [2023-08-27 13:33:52,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:33:52" (1/1) ... [2023-08-27 13:33:52,598 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:33:52" (1/1) ... [2023-08-27 13:33:52,598 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:33:52" (1/1) ... [2023-08-27 13:33:52,607 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:33:52" (1/1) ... [2023-08-27 13:33:52,610 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:33:52" (1/1) ... [2023-08-27 13:33:52,611 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:33:52" (1/1) ... [2023-08-27 13:33:52,612 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:33:52" (1/1) ... [2023-08-27 13:33:52,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 13:33:52,615 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 13:33:52,615 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 13:33:52,615 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 13:33:52,616 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:33:52" (1/1) ... [2023-08-27 13:33:52,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 13:33:52,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:33:52,636 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 13:33:52,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 13:33:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 13:33:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 13:33:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 13:33:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 13:33:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 13:33:52,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 13:33:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 13:33:52,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 13:33:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 13:33:52,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 13:33:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 13:33:52,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 13:33:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 13:33:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-27 13:33:52,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-27 13:33:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-27 13:33:52,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-27 13:33:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 13:33:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 13:33:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 13:33:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 13:33:52,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 13:33:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 13:33:52,665 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 13:33:52,774 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 13:33:52,778 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 13:33:53,220 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 13:33:53,602 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 13:33:53,602 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-27 13:33:53,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:33:53 BoogieIcfgContainer [2023-08-27 13:33:53,605 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 13:33:53,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 13:33:53,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 13:33:53,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 13:33:53,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:33:52" (1/3) ... [2023-08-27 13:33:53,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa94a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:33:53, skipping insertion in model container [2023-08-27 13:33:53,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:33:52" (2/3) ... [2023-08-27 13:33:53,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa94a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:33:53, skipping insertion in model container [2023-08-27 13:33:53,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:33:53" (3/3) ... [2023-08-27 13:33:53,613 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2023-08-27 13:33:53,626 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 13:33:53,626 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2023-08-27 13:33:53,627 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 13:33:53,806 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-27 13:33:53,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 305 transitions, 682 flow [2023-08-27 13:33:53,992 INFO L124 PetriNetUnfolderBase]: 18/277 cut-off events. [2023-08-27 13:33:53,992 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 13:33:53,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 277 events. 18/277 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 505 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 237. Up to 3 conditions per place. [2023-08-27 13:33:53,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 305 transitions, 682 flow [2023-08-27 13:33:54,006 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 268 transitions, 584 flow [2023-08-27 13:33:54,011 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 13:33:54,021 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 268 transitions, 584 flow [2023-08-27 13:33:54,024 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 268 transitions, 584 flow [2023-08-27 13:33:54,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 268 transitions, 584 flow [2023-08-27 13:33:54,081 INFO L124 PetriNetUnfolderBase]: 18/268 cut-off events. [2023-08-27 13:33:54,082 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 13:33:54,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 268 events. 18/268 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 501 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 237. Up to 3 conditions per place. [2023-08-27 13:33:54,091 INFO L119 LiptonReduction]: Number of co-enabled transitions 13648 [2023-08-27 13:33:59,976 INFO L134 LiptonReduction]: Checked pairs total: 87367 [2023-08-27 13:33:59,976 INFO L136 LiptonReduction]: Total number of compositions: 222 [2023-08-27 13:33:59,985 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 13:33:59,989 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@8686221, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 13:33:59,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2023-08-27 13:33:59,990 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 13:33:59,990 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-27 13:33:59,991 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 13:33:59,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:33:59,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-27 13:33:59,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 76 more)] === [2023-08-27 13:33:59,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:33:59,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2023-08-27 13:34:00,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:34:00,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772161447] [2023-08-27 13:34:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:34:00,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:34:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:34:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:34:00,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:34:00,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772161447] [2023-08-27 13:34:00,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772161447] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:34:00,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:34:00,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-27 13:34:00,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919898248] [2023-08-27 13:34:00,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:34:00,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 13:34:00,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:34:00,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 13:34:00,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 13:34:00,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 531 [2023-08-27 13:34:00,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 101 transitions, 250 flow. Second operand has 2 states, 2 states have (on average 229.5) internal successors, (459), 2 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:34:00,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:34:00,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 531 [2023-08-27 13:34:00,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:34:38,175 INFO L124 PetriNetUnfolderBase]: 332086/417156 cut-off events. [2023-08-27 13:34:38,175 INFO L125 PetriNetUnfolderBase]: For 27715/27715 co-relation queries the response was YES. [2023-08-27 13:34:39,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 857089 conditions, 417156 events. 332086/417156 cut-off events. For 27715/27715 co-relation queries the response was YES. Maximal size of possible extension queue 15859. Compared 2463344 event pairs, 293865 based on Foata normal form. 0/193533 useless extension candidates. Maximal degree in co-relation 854116. Up to 408141 conditions per place. [2023-08-27 13:34:40,934 INFO L140 encePairwiseOnDemand]: 521/531 looper letters, 71 selfloop transitions, 0 changer transitions 0/91 dead transitions. [2023-08-27 13:34:40,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 91 transitions, 372 flow [2023-08-27 13:34:40,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 13:34:40,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 13:34:40,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 539 transitions. [2023-08-27 13:34:40,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507532956685499 [2023-08-27 13:34:40,946 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 539 transitions. [2023-08-27 13:34:40,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 539 transitions. [2023-08-27 13:34:40,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:34:40,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 539 transitions. [2023-08-27 13:34:40,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 269.5) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:34:40,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 531.0) internal successors, (1593), 3 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:34:40,957 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 531.0) internal successors, (1593), 3 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:34:40,959 INFO L175 Difference]: Start difference. First operand has 111 places, 101 transitions, 250 flow. Second operand 2 states and 539 transitions. [2023-08-27 13:34:40,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 91 transitions, 372 flow [2023-08-27 13:34:42,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 340 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-27 13:34:42,130 INFO L231 Difference]: Finished difference. Result has 90 places, 91 transitions, 198 flow [2023-08-27 13:34:42,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=198, PETRI_PLACES=90, PETRI_TRANSITIONS=91} [2023-08-27 13:34:42,134 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -21 predicate places. [2023-08-27 13:34:42,134 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 91 transitions, 198 flow [2023-08-27 13:34:42,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 229.5) internal successors, (459), 2 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:34:42,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:34:42,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 13:34:42,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 13:34:42,136 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 76 more)] === [2023-08-27 13:34:42,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:34:42,142 INFO L85 PathProgramCache]: Analyzing trace with hash 53354, now seen corresponding path program 1 times [2023-08-27 13:34:42,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:34:42,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105663247] [2023-08-27 13:34:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:34:42,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:34:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:34:42,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:34:42,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:34:42,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105663247] [2023-08-27 13:34:42,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105663247] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:34:42,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:34:42,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:34:42,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762064459] [2023-08-27 13:34:42,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:34:42,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:34:42,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:34:42,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:34:42,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:34:42,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 531 [2023-08-27 13:34:42,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 91 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:34:42,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:34:42,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 531 [2023-08-27 13:34:42,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:35:15,879 INFO L124 PetriNetUnfolderBase]: 332087/417158 cut-off events. [2023-08-27 13:35:15,880 INFO L125 PetriNetUnfolderBase]: For 5863/5863 co-relation queries the response was YES. [2023-08-27 13:35:16,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833298 conditions, 417158 events. 332087/417158 cut-off events. For 5863/5863 co-relation queries the response was YES. Maximal size of possible extension queue 15860. Compared 2463767 event pairs, 293865 based on Foata normal form. 0/193534 useless extension candidates. Maximal degree in co-relation 833295. Up to 408142 conditions per place. [2023-08-27 13:35:17,938 INFO L140 encePairwiseOnDemand]: 526/531 looper letters, 70 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2023-08-27 13:35:17,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 93 transitions, 348 flow [2023-08-27 13:35:17,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:35:17,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:35:17,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 738 transitions. [2023-08-27 13:35:17,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632768361581921 [2023-08-27 13:35:17,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 738 transitions. [2023-08-27 13:35:17,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 738 transitions. [2023-08-27 13:35:17,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:35:17,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 738 transitions. [2023-08-27 13:35:17,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:35:17,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:35:17,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:35:17,946 INFO L175 Difference]: Start difference. First operand has 90 places, 91 transitions, 198 flow. Second operand 3 states and 738 transitions. [2023-08-27 13:35:17,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 93 transitions, 348 flow [2023-08-27 13:35:17,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 93 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 13:35:17,948 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 219 flow [2023-08-27 13:35:17,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2023-08-27 13:35:17,948 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -18 predicate places. [2023-08-27 13:35:17,949 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 219 flow [2023-08-27 13:35:17,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:35:17,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:35:17,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 13:35:17,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 13:35:17,949 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 76 more)] === [2023-08-27 13:35:17,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:35:17,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1655651, now seen corresponding path program 1 times [2023-08-27 13:35:17,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:35:17,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64908935] [2023-08-27 13:35:17,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:35:17,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:35:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:35:18,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:35:18,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:35:18,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64908935] [2023-08-27 13:35:18,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64908935] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:35:18,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:35:18,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:35:18,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216883698] [2023-08-27 13:35:18,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:35:18,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:35:18,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:35:18,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:35:18,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:35:18,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 531 [2023-08-27 13:35:18,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:35:18,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:35:18,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 531 [2023-08-27 13:35:18,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:35:52,839 INFO L124 PetriNetUnfolderBase]: 332087/417157 cut-off events. [2023-08-27 13:35:52,839 INFO L125 PetriNetUnfolderBase]: For 5863/5863 co-relation queries the response was YES. [2023-08-27 13:35:53,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833306 conditions, 417157 events. 332087/417157 cut-off events. For 5863/5863 co-relation queries the response was YES. Maximal size of possible extension queue 15860. Compared 2463748 event pairs, 293865 based on Foata normal form. 0/193534 useless extension candidates. Maximal degree in co-relation 833301. Up to 408138 conditions per place.