/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-bakery-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 13:24:55,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 13:24:55,750 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 13:24:55,755 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 13:24:55,756 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 13:24:55,788 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 13:24:55,788 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 13:24:55,789 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 13:24:55,790 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 13:24:55,793 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 13:24:55,793 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 13:24:55,794 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 13:24:55,794 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 13:24:55,795 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 13:24:55,795 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 13:24:55,796 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 13:24:55,796 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 13:24:55,796 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 13:24:55,796 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 13:24:55,796 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 13:24:55,797 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 13:24:55,797 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 13:24:55,797 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 13:24:55,798 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 13:24:55,798 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 13:24:55,798 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 13:24:55,799 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 13:24:55,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 13:24:55,799 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 13:24:55,800 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 13:24:55,801 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 13:24:55,801 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 13:24:55,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 13:24:55,801 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 13:24:55,801 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 13:24:55,802 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 13:24:56,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 13:24:56,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 13:24:56,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 13:24:56,178 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 13:24:56,179 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 13:24:56,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c [2023-08-27 13:24:57,479 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 13:24:57,729 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 13:24:57,729 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c [2023-08-27 13:24:57,754 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5849ec6d9/c9cee06b3884435d96b288b8aa4be16d/FLAG642737aba [2023-08-27 13:24:57,770 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5849ec6d9/c9cee06b3884435d96b288b8aa4be16d [2023-08-27 13:24:57,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 13:24:57,777 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 13:24:57,779 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 13:24:57,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 13:24:57,782 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 13:24:57,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:24:57" (1/1) ... [2023-08-27 13:24:57,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac9b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:24:57, skipping insertion in model container [2023-08-27 13:24:57,784 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:24:57" (1/1) ... [2023-08-27 13:24:57,822 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 13:24:58,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 13:24:58,010 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 13:24:58,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 13:24:58,050 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 13:24:58,051 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 13:24:58,057 INFO L206 MainTranslator]: Completed translation [2023-08-27 13:24:58,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:24:58 WrapperNode [2023-08-27 13:24:58,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 13:24:58,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 13:24:58,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 13:24:58,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 13:24:58,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:24:58" (1/1) ... [2023-08-27 13:24:58,073 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:24:58" (1/1) ... [2023-08-27 13:24:58,108 INFO L138 Inliner]: procedures = 23, calls = 177, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 423 [2023-08-27 13:24:58,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 13:24:58,109 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 13:24:58,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 13:24:58,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 13:24:58,117 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:24:58" (1/1) ... [2023-08-27 13:24:58,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:24:58" (1/1) ... [2023-08-27 13:24:58,121 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:24:58" (1/1) ... [2023-08-27 13:24:58,122 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:24:58" (1/1) ... [2023-08-27 13:24:58,130 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:24:58" (1/1) ... [2023-08-27 13:24:58,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:24:58" (1/1) ... [2023-08-27 13:24:58,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:24:58" (1/1) ... [2023-08-27 13:24:58,137 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:24:58" (1/1) ... [2023-08-27 13:24:58,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 13:24:58,142 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 13:24:58,142 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 13:24:58,142 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 13:24:58,143 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:24:58" (1/1) ... [2023-08-27 13:24:58,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 13:24:58,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:24:58,171 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 13:24:58,183 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 13:24:58,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 13:24:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 13:24:58,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 13:24:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 13:24:58,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 13:24:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 13:24:58,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 13:24:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 13:24:58,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 13:24:58,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 13:24:58,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 13:24:58,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 13:24:58,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 13:24:58,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 13:24:58,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 13:24:58,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 13:24:58,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 13:24:58,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 13:24:58,208 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 13:24:58,296 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 13:24:58,298 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 13:24:58,762 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 13:24:58,943 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 13:24:58,944 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 13:24:58,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:24:58 BoogieIcfgContainer [2023-08-27 13:24:58,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 13:24:58,949 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 13:24:58,949 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 13:24:58,951 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 13:24:58,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:24:57" (1/3) ... [2023-08-27 13:24:58,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9f4873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:24:58, skipping insertion in model container [2023-08-27 13:24:58,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:24:58" (2/3) ... [2023-08-27 13:24:58,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9f4873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:24:58, skipping insertion in model container [2023-08-27 13:24:58,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:24:58" (3/3) ... [2023-08-27 13:24:58,955 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2023-08-27 13:24:58,969 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 13:24:58,970 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-08-27 13:24:58,970 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 13:24:59,076 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 13:24:59,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 225 transitions, 482 flow [2023-08-27 13:24:59,226 INFO L124 PetriNetUnfolderBase]: 2/221 cut-off events. [2023-08-27 13:24:59,226 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 13:24:59,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 221 events. 2/221 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 288 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 170. Up to 2 conditions per place. [2023-08-27 13:24:59,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 225 transitions, 482 flow [2023-08-27 13:24:59,243 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 208 transitions, 440 flow [2023-08-27 13:24:59,246 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 13:24:59,263 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 208 transitions, 440 flow [2023-08-27 13:24:59,266 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 208 transitions, 440 flow [2023-08-27 13:24:59,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 208 transitions, 440 flow [2023-08-27 13:24:59,312 INFO L124 PetriNetUnfolderBase]: 2/208 cut-off events. [2023-08-27 13:24:59,312 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 13:24:59,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 208 events. 2/208 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 287 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 170. Up to 2 conditions per place. [2023-08-27 13:24:59,321 INFO L119 LiptonReduction]: Number of co-enabled transitions 8064 [2023-08-27 13:25:04,990 INFO L134 LiptonReduction]: Checked pairs total: 92667 [2023-08-27 13:25:04,990 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-27 13:25:05,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 13:25:05,016 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;@6e64b9b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 13:25:05,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-08-27 13:25:05,019 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 13:25:05,019 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-27 13:25:05,019 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 13:25:05,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:25:05,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 13:25:05,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 13:25:05,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:25:05,024 INFO L85 PathProgramCache]: Analyzing trace with hash -67555458, now seen corresponding path program 1 times [2023-08-27 13:25:05,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:25:05,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403758230] [2023-08-27 13:25:05,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:25:05,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:25:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:25:05,592 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 13:25:05,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:25:05,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403758230] [2023-08-27 13:25:05,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403758230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:25:05,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:25:05,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 13:25:05,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494848241] [2023-08-27 13:25:05,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:25:05,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 13:25:05,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:25:05,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 13:25:05,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 13:25:05,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 364 [2023-08-27 13:25:05,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 93 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 13:25:05,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:25:05,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 364 [2023-08-27 13:25:05,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:25:57,175 INFO L124 PetriNetUnfolderBase]: 679181/913101 cut-off events. [2023-08-27 13:25:57,175 INFO L125 PetriNetUnfolderBase]: For 17834/17834 co-relation queries the response was YES. [2023-08-27 13:25:58,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1818403 conditions, 913101 events. 679181/913101 cut-off events. For 17834/17834 co-relation queries the response was YES. Maximal size of possible extension queue 13468. Compared 6939078 event pairs, 201445 based on Foata normal form. 0/765197 useless extension candidates. Maximal degree in co-relation 1730203. Up to 692462 conditions per place. [2023-08-27 13:26:01,637 INFO L140 encePairwiseOnDemand]: 347/364 looper letters, 213 selfloop transitions, 20 changer transitions 0/245 dead transitions. [2023-08-27 13:26:01,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 245 transitions, 1028 flow [2023-08-27 13:26:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 13:26:01,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 13:26:01,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 981 transitions. [2023-08-27 13:26:01,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.539010989010989 [2023-08-27 13:26:01,652 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 981 transitions. [2023-08-27 13:26:01,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 981 transitions. [2023-08-27 13:26:01,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:01,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 981 transitions. [2023-08-27 13:26:01,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 0 states have call successors, (0), 0 states 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 13:26:01,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 364.0) internal successors, (2184), 6 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states 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 13:26:01,671 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 364.0) internal successors, (2184), 6 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states 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 13:26:01,672 INFO L175 Difference]: Start difference. First operand has 106 places, 93 transitions, 210 flow. Second operand 5 states and 981 transitions. [2023-08-27 13:26:01,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 245 transitions, 1028 flow [2023-08-27 13:26:01,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 245 transitions, 980 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 13:26:01,888 INFO L231 Difference]: Finished difference. Result has 105 places, 111 transitions, 341 flow [2023-08-27 13:26:01,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=105, PETRI_TRANSITIONS=111} [2023-08-27 13:26:01,892 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, -1 predicate places. [2023-08-27 13:26:01,893 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 111 transitions, 341 flow [2023-08-27 13:26:01,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 13:26:01,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:01,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 13:26:01,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 13:26:01,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 13:26:01,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:01,901 INFO L85 PathProgramCache]: Analyzing trace with hash -67555459, now seen corresponding path program 1 times [2023-08-27 13:26:01,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:01,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830336715] [2023-08-27 13:26:01,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:01,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:02,118 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 13:26:02,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:02,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830336715] [2023-08-27 13:26:02,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830336715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:02,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:02,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 13:26:02,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015084046] [2023-08-27 13:26:02,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:02,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 13:26:02,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:02,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 13:26:02,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 13:26:02,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 364 [2023-08-27 13:26:02,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 111 transitions, 341 flow. Second operand has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states 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 13:26:02,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:02,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 364 [2023-08-27 13:26:02,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:27:00,141 INFO L124 PetriNetUnfolderBase]: 707766/953160 cut-off events. [2023-08-27 13:27:00,141 INFO L125 PetriNetUnfolderBase]: For 257937/257937 co-relation queries the response was YES. [2023-08-27 13:27:01,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2215488 conditions, 953160 events. 707766/953160 cut-off events. For 257937/257937 co-relation queries the response was YES. Maximal size of possible extension queue 13932. Compared 7196484 event pairs, 294577 based on Foata normal form. 5538/830681 useless extension candidates. Maximal degree in co-relation 998745. Up to 872706 conditions per place. [2023-08-27 13:27:04,842 INFO L140 encePairwiseOnDemand]: 344/364 looper letters, 189 selfloop transitions, 25 changer transitions 0/226 dead transitions. [2023-08-27 13:27:04,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 226 transitions, 1129 flow [2023-08-27 13:27:04,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 13:27:04,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 13:27:04,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 921 transitions. [2023-08-27 13:27:04,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506043956043956 [2023-08-27 13:27:04,845 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 921 transitions. [2023-08-27 13:27:04,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 921 transitions. [2023-08-27 13:27:04,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:27:04,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 921 transitions. [2023-08-27 13:27:04,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 184.2) internal successors, (921), 5 states have internal predecessors, (921), 0 states have call successors, (0), 0 states 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 13:27:04,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 364.0) internal successors, (2184), 6 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states 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 13:27:04,852 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 364.0) internal successors, (2184), 6 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states 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 13:27:04,852 INFO L175 Difference]: Start difference. First operand has 105 places, 111 transitions, 341 flow. Second operand 5 states and 921 transitions. [2023-08-27 13:27:04,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 226 transitions, 1129 flow [2023-08-27 13:27:06,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 226 transitions, 1129 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 13:27:06,075 INFO L231 Difference]: Finished difference. Result has 112 places, 135 transitions, 605 flow [2023-08-27 13:27:06,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=605, PETRI_PLACES=112, PETRI_TRANSITIONS=135} [2023-08-27 13:27:06,076 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 6 predicate places. [2023-08-27 13:27:06,076 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 135 transitions, 605 flow [2023-08-27 13:27:06,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states 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 13:27:06,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:27:06,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:27:06,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 13:27:06,078 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 13:27:06,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:27:06,078 INFO L85 PathProgramCache]: Analyzing trace with hash 777325106, now seen corresponding path program 1 times [2023-08-27 13:27:06,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:27:06,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044488519] [2023-08-27 13:27:06,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:27:06,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:27:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:27:06,704 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 13:27:06,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:27:06,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044488519] [2023-08-27 13:27:06,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044488519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:27:06,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:27:06,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 13:27:06,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316848117] [2023-08-27 13:27:06,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:27:06,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:27:06,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:27:06,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:27:06,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:27:06,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 364 [2023-08-27 13:27:06,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 135 transitions, 605 flow. Second operand has 7 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states 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 13:27:06,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:27:06,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 364 [2023-08-27 13:27:06,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand