./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d7ba2cbd8ed9f48aa977924dd556bad66f28ba8aaa41d75f8db9183096d20ba1 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:58:31,584 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:58:31,652 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:58:31,659 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:58:31,660 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:58:31,686 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:58:31,687 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:58:31,687 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:58:31,688 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:58:31,688 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:58:31,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:58:31,689 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:58:31,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:58:31,690 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:58:31,690 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:58:31,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:58:31,691 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:58:31,691 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:58:31,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:58:31,692 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:58:31,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:58:31,693 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:58:31,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:58:31,694 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:58:31,694 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:58:31,694 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:58:31,695 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:58:31,695 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:58:31,695 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:58:31,695 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:58:31,696 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:58:31,700 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:58:31,701 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:58:31,701 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:58:31,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:58:31,701 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:58:31,701 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:58:31,702 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:58:31,702 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:58:31,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:58:31,702 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:58:31,703 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:58:31,703 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:58:31,704 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:58:31,704 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7ba2cbd8ed9f48aa977924dd556bad66f28ba8aaa41d75f8db9183096d20ba1 [2024-10-14 23:58:31,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:58:31,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:58:31,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:58:31,959 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:58:31,960 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:58:31,961 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2024-10-14 23:58:33,484 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:58:33,665 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:58:33,665 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2024-10-14 23:58:33,674 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8cfc9847/2ef1d3eb794249c4814838e83df32182/FLAGb57fd0675 [2024-10-14 23:58:33,685 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8cfc9847/2ef1d3eb794249c4814838e83df32182 [2024-10-14 23:58:33,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:58:33,689 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:58:33,690 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:58:33,690 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:58:33,697 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:58:33,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:58:33" (1/1) ... [2024-10-14 23:58:33,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5744dff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:33, skipping insertion in model container [2024-10-14 23:58:33,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:58:33" (1/1) ... [2024-10-14 23:58:33,728 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:58:33,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:58:33,935 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:58:33,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:58:33,993 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:58:33,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:33 WrapperNode [2024-10-14 23:58:33,994 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:58:33,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:58:33,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:58:33,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:58:34,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:33" (1/1) ... [2024-10-14 23:58:34,024 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:33" (1/1) ... [2024-10-14 23:58:34,071 INFO L138 Inliner]: procedures = 22, calls = 17, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 240 [2024-10-14 23:58:34,072 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:58:34,072 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:58:34,073 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:58:34,073 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:58:34,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:33" (1/1) ... [2024-10-14 23:58:34,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:33" (1/1) ... [2024-10-14 23:58:34,089 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:33" (1/1) ... [2024-10-14 23:58:34,106 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 23:58:34,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:33" (1/1) ... [2024-10-14 23:58:34,107 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:33" (1/1) ... [2024-10-14 23:58:34,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:33" (1/1) ... [2024-10-14 23:58:34,115 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:33" (1/1) ... [2024-10-14 23:58:34,117 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:33" (1/1) ... [2024-10-14 23:58:34,118 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:33" (1/1) ... [2024-10-14 23:58:34,121 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:58:34,122 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:58:34,122 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:58:34,122 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:58:34,123 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:33" (1/1) ... [2024-10-14 23:58:34,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:58:34,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:58:34,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 23:58:34,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 23:58:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:58:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 23:58:34,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 23:58:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 23:58:34,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 23:58:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 23:58:34,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 23:58:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 23:58:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:58:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:58:34,215 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 23:58:34,345 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:58:34,347 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:58:34,817 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:58:34,817 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:58:35,104 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:58:35,104 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 23:58:35,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:58:35 BoogieIcfgContainer [2024-10-14 23:58:35,105 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:58:35,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:58:35,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:58:35,112 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:58:35,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:58:33" (1/3) ... [2024-10-14 23:58:35,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f214c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:58:35, skipping insertion in model container [2024-10-14 23:58:35,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:33" (2/3) ... [2024-10-14 23:58:35,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f214c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:58:35, skipping insertion in model container [2024-10-14 23:58:35,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:58:35" (3/3) ... [2024-10-14 23:58:35,117 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2024-10-14 23:58:35,135 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:58:35,136 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-14 23:58:35,136 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:58:35,250 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 23:58:35,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 107 transitions, 235 flow [2024-10-14 23:58:35,348 INFO L124 PetriNetUnfolderBase]: 18/104 cut-off events. [2024-10-14 23:58:35,350 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 23:58:35,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 104 events. 18/104 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 393 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2024-10-14 23:58:35,356 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 107 transitions, 235 flow [2024-10-14 23:58:35,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 102 transitions, 219 flow [2024-10-14 23:58:35,376 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:58:35,385 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@18279bb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:58:35,386 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-10-14 23:58:35,399 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:58:35,400 INFO L124 PetriNetUnfolderBase]: 7/43 cut-off events. [2024-10-14 23:58:35,400 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 23:58:35,400 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:35,401 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:35,401 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:58:35,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:35,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1933473321, now seen corresponding path program 1 times [2024-10-14 23:58:35,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:35,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349130547] [2024-10-14 23:58:35,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:35,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:35,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:35,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349130547] [2024-10-14 23:58:35,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349130547] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:35,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:35,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:58:35,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097648937] [2024-10-14 23:58:35,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:35,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:58:35,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:35,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:58:35,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:58:35,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2024-10-14 23:58:35,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 102 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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) [2024-10-14 23:58:35,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:35,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2024-10-14 23:58:35,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:38,303 INFO L124 PetriNetUnfolderBase]: 14059/22486 cut-off events. [2024-10-14 23:58:38,305 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2024-10-14 23:58:38,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41488 conditions, 22486 events. 14059/22486 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 1406. Compared 186307 event pairs, 5420 based on Foata normal form. 532/18838 useless extension candidates. Maximal degree in co-relation 40483. Up to 10138 conditions per place. [2024-10-14 23:58:38,537 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 100 selfloop transitions, 5 changer transitions 0/159 dead transitions. [2024-10-14 23:58:38,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 159 transitions, 555 flow [2024-10-14 23:58:38,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:58:38,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:58:38,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 336 transitions. [2024-10-14 23:58:38,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7850467289719626 [2024-10-14 23:58:38,555 INFO L175 Difference]: Start difference. First operand has 94 places, 102 transitions, 219 flow. Second operand 4 states and 336 transitions. [2024-10-14 23:58:38,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 159 transitions, 555 flow [2024-10-14 23:58:38,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 159 transitions, 540 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 23:58:38,609 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 244 flow [2024-10-14 23:58:38,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2024-10-14 23:58:38,617 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2024-10-14 23:58:38,617 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 244 flow [2024-10-14 23:58:38,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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) [2024-10-14 23:58:38,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:38,618 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:38,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:58:38,618 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:58:38,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:38,619 INFO L85 PathProgramCache]: Analyzing trace with hash 191870000, now seen corresponding path program 1 times [2024-10-14 23:58:38,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:38,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088107715] [2024-10-14 23:58:38,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:38,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:38,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:38,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:38,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088107715] [2024-10-14 23:58:38,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088107715] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:38,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:38,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:58:38,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044323120] [2024-10-14 23:58:38,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:38,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:58:38,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:38,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:58:38,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:58:38,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 107 [2024-10-14 23:58:38,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2024-10-14 23:58:38,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:38,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 107 [2024-10-14 23:58:38,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:40,536 INFO L124 PetriNetUnfolderBase]: 10585/19081 cut-off events. [2024-10-14 23:58:40,537 INFO L125 PetriNetUnfolderBase]: For 3423/3445 co-relation queries the response was YES. [2024-10-14 23:58:40,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36848 conditions, 19081 events. 10585/19081 cut-off events. For 3423/3445 co-relation queries the response was YES. Maximal size of possible extension queue 1215. Compared 175641 event pairs, 3367 based on Foata normal form. 22/16420 useless extension candidates. Maximal degree in co-relation 21643. Up to 7399 conditions per place. [2024-10-14 23:58:40,678 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 68 selfloop transitions, 4 changer transitions 0/130 dead transitions. [2024-10-14 23:58:40,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 130 transitions, 443 flow [2024-10-14 23:58:40,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:58:40,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:58:40,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2024-10-14 23:58:40,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7266355140186916 [2024-10-14 23:58:40,686 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 244 flow. Second operand 4 states and 311 transitions. [2024-10-14 23:58:40,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 130 transitions, 443 flow [2024-10-14 23:58:40,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 130 transitions, 443 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:58:40,772 INFO L231 Difference]: Finished difference. Result has 96 places, 103 transitions, 250 flow [2024-10-14 23:58:40,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=96, PETRI_TRANSITIONS=103} [2024-10-14 23:58:40,773 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 2 predicate places. [2024-10-14 23:58:40,774 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 103 transitions, 250 flow [2024-10-14 23:58:40,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2024-10-14 23:58:40,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:40,774 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:40,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 23:58:40,775 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:58:40,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:40,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1917861160, now seen corresponding path program 1 times [2024-10-14 23:58:40,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:40,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527046145] [2024-10-14 23:58:40,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:40,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:40,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:40,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527046145] [2024-10-14 23:58:40,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527046145] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:40,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:40,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:58:40,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970833806] [2024-10-14 23:58:40,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:40,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:58:40,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:40,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:58:40,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:58:41,020 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 107 [2024-10-14 23:58:41,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 103 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 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) [2024-10-14 23:58:41,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:41,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 107 [2024-10-14 23:58:41,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:42,554 INFO L124 PetriNetUnfolderBase]: 10457/18631 cut-off events. [2024-10-14 23:58:42,555 INFO L125 PetriNetUnfolderBase]: For 5307/5822 co-relation queries the response was YES. [2024-10-14 23:58:42,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35999 conditions, 18631 events. 10457/18631 cut-off events. For 5307/5822 co-relation queries the response was YES. Maximal size of possible extension queue 1205. Compared 169421 event pairs, 3897 based on Foata normal form. 904/15982 useless extension candidates. Maximal degree in co-relation 22400. Up to 6904 conditions per place. [2024-10-14 23:58:42,677 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 71 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2024-10-14 23:58:42,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 129 transitions, 477 flow [2024-10-14 23:58:42,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:58:42,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:58:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 308 transitions. [2024-10-14 23:58:42,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.719626168224299 [2024-10-14 23:58:42,680 INFO L175 Difference]: Start difference. First operand has 96 places, 103 transitions, 250 flow. Second operand 4 states and 308 transitions. [2024-10-14 23:58:42,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 129 transitions, 477 flow [2024-10-14 23:58:42,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 129 transitions, 463 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:58:42,722 INFO L231 Difference]: Finished difference. Result has 94 places, 101 transitions, 244 flow [2024-10-14 23:58:42,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=94, PETRI_TRANSITIONS=101} [2024-10-14 23:58:42,724 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2024-10-14 23:58:42,724 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 101 transitions, 244 flow [2024-10-14 23:58:42,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 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) [2024-10-14 23:58:42,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:42,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:42,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 23:58:42,725 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:58:42,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:42,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1652971739, now seen corresponding path program 1 times [2024-10-14 23:58:42,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:42,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146365488] [2024-10-14 23:58:42,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:42,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:42,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:42,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:42,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146365488] [2024-10-14 23:58:42,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146365488] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:42,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:42,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:58:42,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466675012] [2024-10-14 23:58:42,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:42,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:58:42,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:42,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:58:42,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:58:42,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 107 [2024-10-14 23:58:42,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 101 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 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) [2024-10-14 23:58:42,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:42,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 107 [2024-10-14 23:58:42,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:44,305 INFO L124 PetriNetUnfolderBase]: 10607/18849 cut-off events. [2024-10-14 23:58:44,305 INFO L125 PetriNetUnfolderBase]: For 4869/4891 co-relation queries the response was YES. [2024-10-14 23:58:44,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37310 conditions, 18849 events. 10607/18849 cut-off events. For 4869/4891 co-relation queries the response was YES. Maximal size of possible extension queue 1201. Compared 170684 event pairs, 3367 based on Foata normal form. 288/16759 useless extension candidates. Maximal degree in co-relation 22064. Up to 7665 conditions per place. [2024-10-14 23:58:44,432 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 69 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2024-10-14 23:58:44,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 127 transitions, 447 flow [2024-10-14 23:58:44,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:58:44,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:58:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2024-10-14 23:58:44,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7172897196261683 [2024-10-14 23:58:44,434 INFO L175 Difference]: Start difference. First operand has 94 places, 101 transitions, 244 flow. Second operand 4 states and 307 transitions. [2024-10-14 23:58:44,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 127 transitions, 447 flow [2024-10-14 23:58:44,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 127 transitions, 437 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:58:44,506 INFO L231 Difference]: Finished difference. Result has 93 places, 100 transitions, 242 flow [2024-10-14 23:58:44,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=93, PETRI_TRANSITIONS=100} [2024-10-14 23:58:44,507 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -1 predicate places. [2024-10-14 23:58:44,508 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 100 transitions, 242 flow [2024-10-14 23:58:44,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 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) [2024-10-14 23:58:44,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:44,508 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:44,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 23:58:44,509 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:58:44,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:44,510 INFO L85 PathProgramCache]: Analyzing trace with hash 675847022, now seen corresponding path program 1 times [2024-10-14 23:58:44,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:44,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495857893] [2024-10-14 23:58:44,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:44,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:44,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:44,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:44,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495857893] [2024-10-14 23:58:44,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495857893] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:44,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:44,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:58:44,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467454310] [2024-10-14 23:58:44,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:44,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:58:44,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:44,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:58:44,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:58:44,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 107 [2024-10-14 23:58:44,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 100 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 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) [2024-10-14 23:58:44,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:44,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 107 [2024-10-14 23:58:44,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:45,586 INFO L124 PetriNetUnfolderBase]: 8675/16503 cut-off events. [2024-10-14 23:58:45,586 INFO L125 PetriNetUnfolderBase]: For 4325/4535 co-relation queries the response was YES. [2024-10-14 23:58:45,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30814 conditions, 16503 events. 8675/16503 cut-off events. For 4325/4535 co-relation queries the response was YES. Maximal size of possible extension queue 1063. Compared 156296 event pairs, 3853 based on Foata normal form. 210/13860 useless extension candidates. Maximal degree in co-relation 19157. Up to 6904 conditions per place. [2024-10-14 23:58:45,687 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 69 selfloop transitions, 3 changer transitions 0/127 dead transitions. [2024-10-14 23:58:45,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 127 transitions, 467 flow [2024-10-14 23:58:45,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:58:45,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:58:45,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2024-10-14 23:58:45,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7219626168224299 [2024-10-14 23:58:45,690 INFO L175 Difference]: Start difference. First operand has 93 places, 100 transitions, 242 flow. Second operand 4 states and 309 transitions. [2024-10-14 23:58:45,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 127 transitions, 467 flow [2024-10-14 23:58:45,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 127 transitions, 453 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:58:45,727 INFO L231 Difference]: Finished difference. Result has 92 places, 99 transitions, 238 flow [2024-10-14 23:58:45,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=92, PETRI_TRANSITIONS=99} [2024-10-14 23:58:45,730 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2024-10-14 23:58:45,731 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 99 transitions, 238 flow [2024-10-14 23:58:45,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 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) [2024-10-14 23:58:45,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:45,731 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:45,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 23:58:45,731 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:58:45,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:45,732 INFO L85 PathProgramCache]: Analyzing trace with hash -297483854, now seen corresponding path program 1 times [2024-10-14 23:58:45,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:45,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393447021] [2024-10-14 23:58:45,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:45,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:45,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:45,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:45,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393447021] [2024-10-14 23:58:45,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393447021] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:45,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:45,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:58:45,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404624674] [2024-10-14 23:58:45,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:45,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:58:45,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:45,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:58:45,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:58:45,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 107 [2024-10-14 23:58:45,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 99 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 59.4) internal successors, (297), 5 states have internal predecessors, (297), 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) [2024-10-14 23:58:45,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:45,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 107 [2024-10-14 23:58:45,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:47,402 INFO L124 PetriNetUnfolderBase]: 14252/22265 cut-off events. [2024-10-14 23:58:47,402 INFO L125 PetriNetUnfolderBase]: For 2755/2755 co-relation queries the response was YES. [2024-10-14 23:58:47,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45808 conditions, 22265 events. 14252/22265 cut-off events. For 2755/2755 co-relation queries the response was YES. Maximal size of possible extension queue 1390. Compared 180534 event pairs, 3279 based on Foata normal form. 0/20221 useless extension candidates. Maximal degree in co-relation 27416. Up to 9347 conditions per place. [2024-10-14 23:58:47,520 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 96 selfloop transitions, 6 changer transitions 0/152 dead transitions. [2024-10-14 23:58:47,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 152 transitions, 562 flow [2024-10-14 23:58:47,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:58:47,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:58:47,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 392 transitions. [2024-10-14 23:58:47,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7327102803738318 [2024-10-14 23:58:47,523 INFO L175 Difference]: Start difference. First operand has 92 places, 99 transitions, 238 flow. Second operand 5 states and 392 transitions. [2024-10-14 23:58:47,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 152 transitions, 562 flow [2024-10-14 23:58:47,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 152 transitions, 548 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:58:47,587 INFO L231 Difference]: Finished difference. Result has 92 places, 98 transitions, 242 flow [2024-10-14 23:58:47,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=92, PETRI_TRANSITIONS=98} [2024-10-14 23:58:47,588 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2024-10-14 23:58:47,588 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 98 transitions, 242 flow [2024-10-14 23:58:47,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.4) internal successors, (297), 5 states have internal predecessors, (297), 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) [2024-10-14 23:58:47,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:47,589 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:47,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 23:58:47,589 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:58:47,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:47,590 INFO L85 PathProgramCache]: Analyzing trace with hash -297482829, now seen corresponding path program 1 times [2024-10-14 23:58:47,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:47,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085733743] [2024-10-14 23:58:47,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:47,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:47,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:47,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085733743] [2024-10-14 23:58:47,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085733743] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:47,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:47,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:58:47,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006712725] [2024-10-14 23:58:47,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:47,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:58:47,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:47,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:58:47,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:58:47,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2024-10-14 23:58:47,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 98 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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) [2024-10-14 23:58:47,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:47,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2024-10-14 23:58:47,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:48,897 INFO L124 PetriNetUnfolderBase]: 11720/19787 cut-off events. [2024-10-14 23:58:48,897 INFO L125 PetriNetUnfolderBase]: For 6303/6303 co-relation queries the response was YES. [2024-10-14 23:58:48,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40012 conditions, 19787 events. 11720/19787 cut-off events. For 6303/6303 co-relation queries the response was YES. Maximal size of possible extension queue 1240. Compared 172106 event pairs, 5591 based on Foata normal form. 266/17417 useless extension candidates. Maximal degree in co-relation 23802. Up to 10172 conditions per place. [2024-10-14 23:58:48,995 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 98 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2024-10-14 23:58:48,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 152 transitions, 556 flow [2024-10-14 23:58:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:58:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:58:48,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2024-10-14 23:58:48,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7733644859813084 [2024-10-14 23:58:48,997 INFO L175 Difference]: Start difference. First operand has 92 places, 98 transitions, 242 flow. Second operand 4 states and 331 transitions. [2024-10-14 23:58:48,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 152 transitions, 556 flow [2024-10-14 23:58:49,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 152 transitions, 544 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 23:58:49,041 INFO L231 Difference]: Finished difference. Result has 91 places, 97 transitions, 232 flow [2024-10-14 23:58:49,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=91, PETRI_TRANSITIONS=97} [2024-10-14 23:58:49,042 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -3 predicate places. [2024-10-14 23:58:49,042 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 97 transitions, 232 flow [2024-10-14 23:58:49,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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) [2024-10-14 23:58:49,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:49,043 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:49,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 23:58:49,043 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:58:49,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:49,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1612118833, now seen corresponding path program 1 times [2024-10-14 23:58:49,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:49,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722829264] [2024-10-14 23:58:49,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:49,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:49,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:49,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:49,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722829264] [2024-10-14 23:58:49,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722829264] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:49,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:49,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:58:49,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765739736] [2024-10-14 23:58:49,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:49,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:58:49,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:49,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:58:49,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:58:49,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2024-10-14 23:58:49,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 97 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 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) [2024-10-14 23:58:49,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:49,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2024-10-14 23:58:49,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:50,880 INFO L124 PetriNetUnfolderBase]: 16574/26850 cut-off events. [2024-10-14 23:58:50,880 INFO L125 PetriNetUnfolderBase]: For 7087/7493 co-relation queries the response was YES. [2024-10-14 23:58:50,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53647 conditions, 26850 events. 16574/26850 cut-off events. For 7087/7493 co-relation queries the response was YES. Maximal size of possible extension queue 1576. Compared 231856 event pairs, 6768 based on Foata normal form. 1002/23709 useless extension candidates. Maximal degree in co-relation 33520. Up to 12388 conditions per place. [2024-10-14 23:58:50,992 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 102 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2024-10-14 23:58:50,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 154 transitions, 610 flow [2024-10-14 23:58:50,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:58:50,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:58:50,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2024-10-14 23:58:50,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7757009345794392 [2024-10-14 23:58:50,994 INFO L175 Difference]: Start difference. First operand has 91 places, 97 transitions, 232 flow. Second operand 4 states and 332 transitions. [2024-10-14 23:58:50,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 154 transitions, 610 flow [2024-10-14 23:58:51,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 154 transitions, 594 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:58:51,036 INFO L231 Difference]: Finished difference. Result has 94 places, 99 transitions, 260 flow [2024-10-14 23:58:51,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=260, PETRI_PLACES=94, PETRI_TRANSITIONS=99} [2024-10-14 23:58:51,037 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2024-10-14 23:58:51,037 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 99 transitions, 260 flow [2024-10-14 23:58:51,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 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) [2024-10-14 23:58:51,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:51,038 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:51,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 23:58:51,039 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:58:51,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:51,039 INFO L85 PathProgramCache]: Analyzing trace with hash -632064066, now seen corresponding path program 1 times [2024-10-14 23:58:51,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:51,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109116142] [2024-10-14 23:58:51,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:51,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:51,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:51,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109116142] [2024-10-14 23:58:51,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109116142] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:51,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:51,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:58:51,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801625701] [2024-10-14 23:58:51,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:51,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:58:51,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:51,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:58:51,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 23:58:51,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 107 [2024-10-14 23:58:51,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 99 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 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) [2024-10-14 23:58:51,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:51,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 107 [2024-10-14 23:58:51,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:53,013 INFO L124 PetriNetUnfolderBase]: 16506/26289 cut-off events. [2024-10-14 23:58:53,013 INFO L125 PetriNetUnfolderBase]: For 8983/9543 co-relation queries the response was YES. [2024-10-14 23:58:53,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56390 conditions, 26289 events. 16506/26289 cut-off events. For 8983/9543 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 223450 event pairs, 4053 based on Foata normal form. 914/24794 useless extension candidates. Maximal degree in co-relation 36765. Up to 7565 conditions per place. [2024-10-14 23:58:53,344 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 128 selfloop transitions, 9 changer transitions 0/186 dead transitions. [2024-10-14 23:58:53,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 186 transitions, 771 flow [2024-10-14 23:58:53,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:58:53,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:58:53,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 458 transitions. [2024-10-14 23:58:53,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7133956386292835 [2024-10-14 23:58:53,347 INFO L175 Difference]: Start difference. First operand has 94 places, 99 transitions, 260 flow. Second operand 6 states and 458 transitions. [2024-10-14 23:58:53,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 186 transitions, 771 flow [2024-10-14 23:58:53,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 186 transitions, 771 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:58:53,424 INFO L231 Difference]: Finished difference. Result has 99 places, 99 transitions, 285 flow [2024-10-14 23:58:53,424 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=285, PETRI_PLACES=99, PETRI_TRANSITIONS=99} [2024-10-14 23:58:53,425 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2024-10-14 23:58:53,425 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 99 transitions, 285 flow [2024-10-14 23:58:53,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 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) [2024-10-14 23:58:53,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:53,425 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:53,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 23:58:53,426 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:58:53,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:53,426 INFO L85 PathProgramCache]: Analyzing trace with hash 947968337, now seen corresponding path program 1 times [2024-10-14 23:58:53,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:53,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468991212] [2024-10-14 23:58:53,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:53,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:53,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:53,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:53,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468991212] [2024-10-14 23:58:53,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468991212] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:53,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:53,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:58:53,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676158619] [2024-10-14 23:58:53,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:53,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:58:53,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:53,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:58:53,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:58:53,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2024-10-14 23:58:53,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 99 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2024-10-14 23:58:53,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:53,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2024-10-14 23:58:53,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:55,227 INFO L124 PetriNetUnfolderBase]: 16748/30640 cut-off events. [2024-10-14 23:58:55,228 INFO L125 PetriNetUnfolderBase]: For 21264/23036 co-relation queries the response was YES. [2024-10-14 23:58:55,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65304 conditions, 30640 events. 16748/30640 cut-off events. For 21264/23036 co-relation queries the response was YES. Maximal size of possible extension queue 1732. Compared 301996 event pairs, 8142 based on Foata normal form. 1343/27479 useless extension candidates. Maximal degree in co-relation 42967. Up to 14288 conditions per place. [2024-10-14 23:58:55,398 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 111 selfloop transitions, 5 changer transitions 0/165 dead transitions. [2024-10-14 23:58:55,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 165 transitions, 761 flow [2024-10-14 23:58:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:58:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:58:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 330 transitions. [2024-10-14 23:58:55,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7710280373831776 [2024-10-14 23:58:55,400 INFO L175 Difference]: Start difference. First operand has 99 places, 99 transitions, 285 flow. Second operand 4 states and 330 transitions. [2024-10-14 23:58:55,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 165 transitions, 761 flow [2024-10-14 23:58:55,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 165 transitions, 730 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 23:58:55,496 INFO L231 Difference]: Finished difference. Result has 100 places, 101 transitions, 299 flow [2024-10-14 23:58:55,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=299, PETRI_PLACES=100, PETRI_TRANSITIONS=101} [2024-10-14 23:58:55,497 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 6 predicate places. [2024-10-14 23:58:55,497 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 101 transitions, 299 flow [2024-10-14 23:58:55,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2024-10-14 23:58:55,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:55,498 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:55,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 23:58:55,498 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:58:55,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:55,498 INFO L85 PathProgramCache]: Analyzing trace with hash 947967312, now seen corresponding path program 1 times [2024-10-14 23:58:55,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:55,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825122160] [2024-10-14 23:58:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:55,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:55,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:55,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825122160] [2024-10-14 23:58:55,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825122160] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:55,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:55,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:58:55,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67996167] [2024-10-14 23:58:55,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:55,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:58:55,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:55,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:58:55,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:58:55,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 107 [2024-10-14 23:58:55,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 101 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 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) [2024-10-14 23:58:55,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:55,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 107 [2024-10-14 23:58:55,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:57,967 INFO L124 PetriNetUnfolderBase]: 19838/32347 cut-off events. [2024-10-14 23:58:57,967 INFO L125 PetriNetUnfolderBase]: For 20977/23393 co-relation queries the response was YES. [2024-10-14 23:58:58,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75091 conditions, 32347 events. 19838/32347 cut-off events. For 20977/23393 co-relation queries the response was YES. Maximal size of possible extension queue 1879. Compared 286920 event pairs, 4725 based on Foata normal form. 1724/31881 useless extension candidates. Maximal degree in co-relation 50276. Up to 13444 conditions per place. [2024-10-14 23:58:58,146 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 110 selfloop transitions, 6 changer transitions 0/163 dead transitions. [2024-10-14 23:58:58,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 163 transitions, 749 flow [2024-10-14 23:58:58,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:58:58,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:58:58,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2024-10-14 23:58:58,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7289719626168224 [2024-10-14 23:58:58,148 INFO L175 Difference]: Start difference. First operand has 100 places, 101 transitions, 299 flow. Second operand 5 states and 390 transitions. [2024-10-14 23:58:58,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 163 transitions, 749 flow [2024-10-14 23:58:58,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 163 transitions, 746 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:58:58,300 INFO L231 Difference]: Finished difference. Result has 103 places, 101 transitions, 313 flow [2024-10-14 23:58:58,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=313, PETRI_PLACES=103, PETRI_TRANSITIONS=101} [2024-10-14 23:58:58,301 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 9 predicate places. [2024-10-14 23:58:58,301 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 101 transitions, 313 flow [2024-10-14 23:58:58,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 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) [2024-10-14 23:58:58,302 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:58,302 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:58,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 23:58:58,302 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:58:58,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:58,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1563924598, now seen corresponding path program 1 times [2024-10-14 23:58:58,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:58,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117071310] [2024-10-14 23:58:58,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:58,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:58,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:58,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117071310] [2024-10-14 23:58:58,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117071310] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:58,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:58,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:58:58,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264638609] [2024-10-14 23:58:58,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:58,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:58:58,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:58,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:58:58,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:58:58,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 107 [2024-10-14 23:58:58,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 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) [2024-10-14 23:58:58,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:58,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 107 [2024-10-14 23:58:58,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:59:00,438 INFO L124 PetriNetUnfolderBase]: 15298/28335 cut-off events. [2024-10-14 23:59:00,438 INFO L125 PetriNetUnfolderBase]: For 21542/23221 co-relation queries the response was YES. [2024-10-14 23:59:00,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64206 conditions, 28335 events. 15298/28335 cut-off events. For 21542/23221 co-relation queries the response was YES. Maximal size of possible extension queue 1542. Compared 279284 event pairs, 5190 based on Foata normal form. 1293/26842 useless extension candidates. Maximal degree in co-relation 44615. Up to 9851 conditions per place. [2024-10-14 23:59:00,634 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 78 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-10-14 23:59:00,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 131 transitions, 593 flow [2024-10-14 23:59:00,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:59:00,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:59:00,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2024-10-14 23:59:00,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7219626168224299 [2024-10-14 23:59:00,636 INFO L175 Difference]: Start difference. First operand has 103 places, 101 transitions, 313 flow. Second operand 4 states and 309 transitions. [2024-10-14 23:59:00,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 131 transitions, 593 flow [2024-10-14 23:59:00,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 131 transitions, 578 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:59:00,851 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 310 flow [2024-10-14 23:59:00,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2024-10-14 23:59:00,852 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 8 predicate places. [2024-10-14 23:59:00,852 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 310 flow [2024-10-14 23:59:00,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 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) [2024-10-14 23:59:00,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:59:00,853 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:59:00,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 23:59:00,853 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:59:00,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:59:00,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1466798952, now seen corresponding path program 1 times [2024-10-14 23:59:00,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:59:00,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907671054] [2024-10-14 23:59:00,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:00,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:59:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:59:01,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:59:01,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907671054] [2024-10-14 23:59:01,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907671054] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:59:01,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:59:01,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:59:01,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172431336] [2024-10-14 23:59:01,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:59:01,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:59:01,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:01,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:59:01,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:59:01,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2024-10-14 23:59:01,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 100 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2024-10-14 23:59:01,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:59:01,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2024-10-14 23:59:01,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:59:03,078 INFO L124 PetriNetUnfolderBase]: 19843/32597 cut-off events. [2024-10-14 23:59:03,078 INFO L125 PetriNetUnfolderBase]: For 26302/27742 co-relation queries the response was YES. [2024-10-14 23:59:03,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77377 conditions, 32597 events. 19843/32597 cut-off events. For 26302/27742 co-relation queries the response was YES. Maximal size of possible extension queue 1777. Compared 291337 event pairs, 8135 based on Foata normal form. 1493/31258 useless extension candidates. Maximal degree in co-relation 53723. Up to 14944 conditions per place. [2024-10-14 23:59:03,262 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 112 selfloop transitions, 5 changer transitions 0/164 dead transitions. [2024-10-14 23:59:03,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 164 transitions, 769 flow [2024-10-14 23:59:03,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:59:03,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:59:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2024-10-14 23:59:03,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7686915887850467 [2024-10-14 23:59:03,264 INFO L175 Difference]: Start difference. First operand has 102 places, 100 transitions, 310 flow. Second operand 4 states and 329 transitions. [2024-10-14 23:59:03,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 164 transitions, 769 flow [2024-10-14 23:59:03,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 164 transitions, 746 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 23:59:03,332 INFO L231 Difference]: Finished difference. Result has 101 places, 100 transitions, 312 flow [2024-10-14 23:59:03,332 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=101, PETRI_TRANSITIONS=100} [2024-10-14 23:59:03,332 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 7 predicate places. [2024-10-14 23:59:03,333 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 100 transitions, 312 flow [2024-10-14 23:59:03,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2024-10-14 23:59:03,333 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:59:03,333 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:59:03,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 23:59:03,333 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:59:03,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:59:03,333 INFO L85 PathProgramCache]: Analyzing trace with hash -677783553, now seen corresponding path program 1 times [2024-10-14 23:59:03,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:59:03,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150061075] [2024-10-14 23:59:03,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:03,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:59:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:59:03,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:59:03,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150061075] [2024-10-14 23:59:03,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150061075] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:59:03,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:59:03,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:59:03,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541263956] [2024-10-14 23:59:03,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:59:03,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:59:03,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:03,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:59:03,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 23:59:03,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 107 [2024-10-14 23:59:03,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 100 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 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) [2024-10-14 23:59:03,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:59:03,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 107 [2024-10-14 23:59:03,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:59:06,186 INFO L124 PetriNetUnfolderBase]: 21238/34068 cut-off events. [2024-10-14 23:59:06,186 INFO L125 PetriNetUnfolderBase]: For 31506/33641 co-relation queries the response was YES. [2024-10-14 23:59:06,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83982 conditions, 34068 events. 21238/34068 cut-off events. For 31506/33641 co-relation queries the response was YES. Maximal size of possible extension queue 1911. Compared 297273 event pairs, 5085 based on Foata normal form. 2581/34291 useless extension candidates. Maximal degree in co-relation 68089. Up to 9331 conditions per place. [2024-10-14 23:59:06,375 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 142 selfloop transitions, 9 changer transitions 0/196 dead transitions. [2024-10-14 23:59:06,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 196 transitions, 980 flow [2024-10-14 23:59:06,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:59:06,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:59:06,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 455 transitions. [2024-10-14 23:59:06,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7087227414330218 [2024-10-14 23:59:06,377 INFO L175 Difference]: Start difference. First operand has 101 places, 100 transitions, 312 flow. Second operand 6 states and 455 transitions. [2024-10-14 23:59:06,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 196 transitions, 980 flow [2024-10-14 23:59:06,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 196 transitions, 964 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:59:06,530 INFO L231 Difference]: Finished difference. Result has 105 places, 100 transitions, 333 flow [2024-10-14 23:59:06,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=333, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2024-10-14 23:59:06,531 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2024-10-14 23:59:06,531 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 333 flow [2024-10-14 23:59:06,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 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) [2024-10-14 23:59:06,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:59:06,531 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:59:06,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 23:59:06,532 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:59:06,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:59:06,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1236991379, now seen corresponding path program 1 times [2024-10-14 23:59:06,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:59:06,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754761460] [2024-10-14 23:59:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:06,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:59:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:06,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:59:06,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:59:06,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754761460] [2024-10-14 23:59:06,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754761460] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:59:06,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:59:06,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:59:06,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19562980] [2024-10-14 23:59:06,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:59:06,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:59:06,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:06,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:59:06,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:59:06,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 107 [2024-10-14 23:59:06,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 333 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 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) [2024-10-14 23:59:06,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:59:06,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 107 [2024-10-14 23:59:06,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:59:08,638 INFO L124 PetriNetUnfolderBase]: 16382/29668 cut-off events. [2024-10-14 23:59:08,638 INFO L125 PetriNetUnfolderBase]: For 31832/34160 co-relation queries the response was YES. [2024-10-14 23:59:08,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72299 conditions, 29668 events. 16382/29668 cut-off events. For 31832/34160 co-relation queries the response was YES. Maximal size of possible extension queue 1585. Compared 287211 event pairs, 5615 based on Foata normal form. 2300/29141 useless extension candidates. Maximal degree in co-relation 59352. Up to 10934 conditions per place. [2024-10-14 23:59:08,866 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 83 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2024-10-14 23:59:08,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 132 transitions, 643 flow [2024-10-14 23:59:08,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:59:08,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:59:08,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 305 transitions. [2024-10-14 23:59:08,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7126168224299065 [2024-10-14 23:59:08,868 INFO L175 Difference]: Start difference. First operand has 105 places, 100 transitions, 333 flow. Second operand 4 states and 305 transitions. [2024-10-14 23:59:08,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 132 transitions, 643 flow [2024-10-14 23:59:09,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 132 transitions, 621 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 23:59:09,034 INFO L231 Difference]: Finished difference. Result has 103 places, 99 transitions, 324 flow [2024-10-14 23:59:09,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=103, PETRI_TRANSITIONS=99} [2024-10-14 23:59:09,035 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 9 predicate places. [2024-10-14 23:59:09,035 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 99 transitions, 324 flow [2024-10-14 23:59:09,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 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) [2024-10-14 23:59:09,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:59:09,036 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:59:09,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 23:59:09,037 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:59:09,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:59:09,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1410864278, now seen corresponding path program 1 times [2024-10-14 23:59:09,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:59:09,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132341207] [2024-10-14 23:59:09,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:09,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:59:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:09,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:59:09,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:59:09,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132341207] [2024-10-14 23:59:09,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132341207] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:59:09,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:59:09,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 23:59:09,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842262712] [2024-10-14 23:59:09,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:59:09,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:59:09,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:09,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:59:09,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:59:09,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 107 [2024-10-14 23:59:09,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 99 transitions, 324 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2024-10-14 23:59:09,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:59:09,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 107 [2024-10-14 23:59:09,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:59:11,493 INFO L124 PetriNetUnfolderBase]: 20831/33365 cut-off events. [2024-10-14 23:59:11,493 INFO L125 PetriNetUnfolderBase]: For 30395/32085 co-relation queries the response was YES. [2024-10-14 23:59:11,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84644 conditions, 33365 events. 20831/33365 cut-off events. For 30395/32085 co-relation queries the response was YES. Maximal size of possible extension queue 1852. Compared 288733 event pairs, 8769 based on Foata normal form. 2095/33052 useless extension candidates. Maximal degree in co-relation 68875. Up to 15735 conditions per place. [2024-10-14 23:59:11,728 INFO L140 encePairwiseOnDemand]: 100/107 looper letters, 177 selfloop transitions, 8 changer transitions 0/227 dead transitions. [2024-10-14 23:59:11,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 227 transitions, 1186 flow [2024-10-14 23:59:11,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:59:11,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:59:11,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 486 transitions. [2024-10-14 23:59:11,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7570093457943925 [2024-10-14 23:59:11,730 INFO L175 Difference]: Start difference. First operand has 103 places, 99 transitions, 324 flow. Second operand 6 states and 486 transitions. [2024-10-14 23:59:11,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 227 transitions, 1186 flow [2024-10-14 23:59:12,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 227 transitions, 1149 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-14 23:59:12,217 INFO L231 Difference]: Finished difference. Result has 105 places, 99 transitions, 334 flow [2024-10-14 23:59:12,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=105, PETRI_TRANSITIONS=99} [2024-10-14 23:59:12,218 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2024-10-14 23:59:12,218 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 99 transitions, 334 flow [2024-10-14 23:59:12,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2024-10-14 23:59:12,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:59:12,218 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:59:12,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 23:59:12,219 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:59:12,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:59:12,219 INFO L85 PathProgramCache]: Analyzing trace with hash -307972039, now seen corresponding path program 1 times [2024-10-14 23:59:12,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:59:12,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224081841] [2024-10-14 23:59:12,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:12,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:59:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:12,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:59:12,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:59:12,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224081841] [2024-10-14 23:59:12,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224081841] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:59:12,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:59:12,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:59:12,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094037287] [2024-10-14 23:59:12,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:59:12,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:59:12,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:12,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:59:12,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:59:12,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2024-10-14 23:59:12,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 99 transitions, 334 flow. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 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) [2024-10-14 23:59:12,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:59:12,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2024-10-14 23:59:12,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:59:14,638 INFO L124 PetriNetUnfolderBase]: 17693/30583 cut-off events. [2024-10-14 23:59:14,638 INFO L125 PetriNetUnfolderBase]: For 39746/41933 co-relation queries the response was YES. [2024-10-14 23:59:14,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75669 conditions, 30583 events. 17693/30583 cut-off events. For 39746/41933 co-relation queries the response was YES. Maximal size of possible extension queue 1689. Compared 285784 event pairs, 9143 based on Foata normal form. 2565/30317 useless extension candidates. Maximal degree in co-relation 61751. Up to 15891 conditions per place. [2024-10-14 23:59:14,810 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 118 selfloop transitions, 4 changer transitions 0/165 dead transitions. [2024-10-14 23:59:14,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 165 transitions, 858 flow [2024-10-14 23:59:14,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:59:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:59:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2024-10-14 23:59:14,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.764018691588785 [2024-10-14 23:59:14,812 INFO L175 Difference]: Start difference. First operand has 105 places, 99 transitions, 334 flow. Second operand 4 states and 327 transitions. [2024-10-14 23:59:14,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 165 transitions, 858 flow [2024-10-14 23:59:14,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 165 transitions, 830 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-14 23:59:14,948 INFO L231 Difference]: Finished difference. Result has 105 places, 98 transitions, 324 flow [2024-10-14 23:59:14,948 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=105, PETRI_TRANSITIONS=98} [2024-10-14 23:59:14,948 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2024-10-14 23:59:14,948 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 98 transitions, 324 flow [2024-10-14 23:59:14,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 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) [2024-10-14 23:59:14,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:59:14,949 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:59:14,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 23:59:14,949 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:59:14,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:59:14,950 INFO L85 PathProgramCache]: Analyzing trace with hash -307973064, now seen corresponding path program 1 times [2024-10-14 23:59:14,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:59:14,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407882743] [2024-10-14 23:59:14,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:14,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:59:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:59:15,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:59:15,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407882743] [2024-10-14 23:59:15,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407882743] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:59:15,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:59:15,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:59:15,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457391919] [2024-10-14 23:59:15,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:59:15,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:59:15,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:15,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:59:15,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:59:15,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 107 [2024-10-14 23:59:15,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 98 transitions, 324 flow. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 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) [2024-10-14 23:59:15,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:59:15,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 107 [2024-10-14 23:59:15,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:59:17,153 INFO L124 PetriNetUnfolderBase]: 20834/32800 cut-off events. [2024-10-14 23:59:17,153 INFO L125 PetriNetUnfolderBase]: For 39541/42274 co-relation queries the response was YES. [2024-10-14 23:59:17,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83597 conditions, 32800 events. 20834/32800 cut-off events. For 39541/42274 co-relation queries the response was YES. Maximal size of possible extension queue 1816. Compared 277942 event pairs, 5615 based on Foata normal form. 2733/33462 useless extension candidates. Maximal degree in co-relation 68092. Up to 13203 conditions per place. [2024-10-14 23:59:17,360 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 116 selfloop transitions, 6 changer transitions 0/163 dead transitions. [2024-10-14 23:59:17,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 163 transitions, 834 flow [2024-10-14 23:59:17,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:59:17,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:59:17,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2024-10-14 23:59:17,362 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7252336448598131 [2024-10-14 23:59:17,362 INFO L175 Difference]: Start difference. First operand has 105 places, 98 transitions, 324 flow. Second operand 5 states and 388 transitions. [2024-10-14 23:59:17,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 163 transitions, 834 flow [2024-10-14 23:59:17,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 163 transitions, 828 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:59:17,493 INFO L231 Difference]: Finished difference. Result has 106 places, 97 transitions, 328 flow [2024-10-14 23:59:17,494 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=106, PETRI_TRANSITIONS=97} [2024-10-14 23:59:17,494 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 12 predicate places. [2024-10-14 23:59:17,494 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 97 transitions, 328 flow [2024-10-14 23:59:17,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 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) [2024-10-14 23:59:17,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:59:17,494 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:59:17,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-14 23:59:17,495 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-14 23:59:17,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:59:17,495 INFO L85 PathProgramCache]: Analyzing trace with hash -957229514, now seen corresponding path program 1 times [2024-10-14 23:59:17,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:59:17,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372919582] [2024-10-14 23:59:17,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:17,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:59:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:59:17,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:59:17,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372919582] [2024-10-14 23:59:17,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372919582] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:59:17,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:59:17,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:59:17,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168895082] [2024-10-14 23:59:17,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:59:17,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:59:17,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:17,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:59:17,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 23:59:17,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 107 [2024-10-14 23:59:17,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 97 transitions, 328 flow. Second operand has 6 states, 6 states have (on average 56.833333333333336) internal successors, (341), 6 states have internal predecessors, (341), 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) [2024-10-14 23:59:17,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:59:17,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 107 [2024-10-14 23:59:17,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand