./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/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:03:16,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:03:16,591 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:03:16,598 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:03:16,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:03:16,619 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:03:16,620 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:03:16,620 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:03:16,621 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:03:16,621 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:03:16,621 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:03:16,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:03:16,622 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:03:16,623 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:03:16,623 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:03:16,623 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:03:16,624 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:03:16,624 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:03:16,625 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:03:16,625 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:03:16,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:03:16,626 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:03:16,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:03:16,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:03:16,627 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:03:16,627 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:03:16,627 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:03:16,628 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:03:16,628 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:03:16,628 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:03:16,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:03:16,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:03:16,629 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:03:16,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:03:16,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:03:16,630 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:03:16,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:03:16,631 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:03:16,631 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:03:16,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:03:16,631 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:03:16,632 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:03:16,632 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:03:16,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:03:16,632 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2024-10-12 00:03:16,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:03:16,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:03:16,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:03:16,976 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:03:16,976 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:03:16,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-10-12 00:03:18,477 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:03:18,681 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:03:18,690 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-10-12 00:03:18,718 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/212112e20/ca7b8b23afbb40a0a60de106f23df718/FLAGf9fc681a6 [2024-10-12 00:03:18,747 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/212112e20/ca7b8b23afbb40a0a60de106f23df718 [2024-10-12 00:03:18,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:03:18,753 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:03:18,754 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:03:18,754 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:03:18,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:03:18,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:03:18" (1/1) ... [2024-10-12 00:03:18,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@621e71a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:18, skipping insertion in model container [2024-10-12 00:03:18,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:03:18" (1/1) ... [2024-10-12 00:03:18,789 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:03:19,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:03:19,034 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:03:19,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:03:19,083 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:03:19,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:19 WrapperNode [2024-10-12 00:03:19,084 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:03:19,085 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:03:19,085 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:03:19,085 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:03:19,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:19" (1/1) ... [2024-10-12 00:03:19,103 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:19" (1/1) ... [2024-10-12 00:03:19,141 INFO L138 Inliner]: procedures = 22, calls = 19, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 222 [2024-10-12 00:03:19,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:03:19,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:03:19,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:03:19,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:03:19,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:19" (1/1) ... [2024-10-12 00:03:19,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:19" (1/1) ... [2024-10-12 00:03:19,159 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:19" (1/1) ... [2024-10-12 00:03:19,185 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]. [2024-10-12 00:03:19,186 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:19" (1/1) ... [2024-10-12 00:03:19,186 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:19" (1/1) ... [2024-10-12 00:03:19,195 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:19" (1/1) ... [2024-10-12 00:03:19,199 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:19" (1/1) ... [2024-10-12 00:03:19,201 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:19" (1/1) ... [2024-10-12 00:03:19,202 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:19" (1/1) ... [2024-10-12 00:03:19,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:03:19,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:03:19,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:03:19,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:03:19,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:19" (1/1) ... [2024-10-12 00:03:19,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:03:19,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:03:19,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:03:19,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:03:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:03:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:03:19,278 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:03:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:03:19,279 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:03:19,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:03:19,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:03:19,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:03:19,280 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:03:19,376 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:03:19,378 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:03:19,769 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:03:19,769 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:03:20,102 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:03:20,102 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 00:03:20,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:03:20 BoogieIcfgContainer [2024-10-12 00:03:20,103 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:03:20,106 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:03:20,106 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:03:20,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:03:20,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:03:18" (1/3) ... [2024-10-12 00:03:20,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386fdfa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:03:20, skipping insertion in model container [2024-10-12 00:03:20,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:19" (2/3) ... [2024-10-12 00:03:20,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386fdfa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:03:20, skipping insertion in model container [2024-10-12 00:03:20,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:03:20" (3/3) ... [2024-10-12 00:03:20,115 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2024-10-12 00:03:20,134 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:03:20,135 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2024-10-12 00:03:20,135 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:03:20,204 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-12 00:03:20,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 96 transitions, 206 flow [2024-10-12 00:03:20,274 INFO L124 PetriNetUnfolderBase]: 10/94 cut-off events. [2024-10-12 00:03:20,275 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-12 00:03:20,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 94 events. 10/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 305 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2024-10-12 00:03:20,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 96 transitions, 206 flow [2024-10-12 00:03:20,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 92 transitions, 193 flow [2024-10-12 00:03:20,293 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:03:20,300 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;@36525579, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:03:20,300 INFO L334 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2024-10-12 00:03:20,305 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:03:20,305 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-10-12 00:03:20,306 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-12 00:03:20,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:20,307 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 00:03:20,307 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:20,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:20,312 INFO L85 PathProgramCache]: Analyzing trace with hash -372165075, now seen corresponding path program 1 times [2024-10-12 00:03:20,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:20,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633168054] [2024-10-12 00:03:20,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:20,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:20,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:20,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:20,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633168054] [2024-10-12 00:03:20,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633168054] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:20,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:20,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:20,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009769174] [2024-10-12 00:03:20,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:20,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:20,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:20,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:20,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:20,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-12 00:03:20,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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) [2024-10-12 00:03:20,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:20,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-12 00:03:20,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:21,220 INFO L124 PetriNetUnfolderBase]: 1063/2550 cut-off events. [2024-10-12 00:03:21,220 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-10-12 00:03:21,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 2550 events. 1063/2550 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 19109 event pairs, 412 based on Foata normal form. 60/2083 useless extension candidates. Maximal degree in co-relation 4124. Up to 929 conditions per place. [2024-10-12 00:03:21,245 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 72 selfloop transitions, 5 changer transitions 0/129 dead transitions. [2024-10-12 00:03:21,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 129 transitions, 427 flow [2024-10-12 00:03:21,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:21,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2024-10-12 00:03:21,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2024-10-12 00:03:21,260 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 193 flow. Second operand 4 states and 296 transitions. [2024-10-12 00:03:21,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 129 transitions, 427 flow [2024-10-12 00:03:21,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 129 transitions, 420 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:03:21,268 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 222 flow [2024-10-12 00:03:21,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2024-10-12 00:03:21,274 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 2 predicate places. [2024-10-12 00:03:21,274 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 222 flow [2024-10-12 00:03:21,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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) [2024-10-12 00:03:21,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:21,275 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:21,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:03:21,276 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:21,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:21,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1347785331, now seen corresponding path program 1 times [2024-10-12 00:03:21,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:21,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353236959] [2024-10-12 00:03:21,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:21,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:21,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:21,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353236959] [2024-10-12 00:03:21,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353236959] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:21,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:21,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:21,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528611369] [2024-10-12 00:03:21,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:21,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:21,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:21,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:21,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:21,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2024-10-12 00:03:21,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 222 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) [2024-10-12 00:03:21,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:21,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2024-10-12 00:03:21,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:21,733 INFO L124 PetriNetUnfolderBase]: 873/2206 cut-off events. [2024-10-12 00:03:21,734 INFO L125 PetriNetUnfolderBase]: For 372/380 co-relation queries the response was YES. [2024-10-12 00:03:21,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3912 conditions, 2206 events. 873/2206 cut-off events. For 372/380 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 16263 event pairs, 302 based on Foata normal form. 8/1863 useless extension candidates. Maximal degree in co-relation 2162. Up to 662 conditions per place. [2024-10-12 00:03:21,754 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 50 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2024-10-12 00:03:21,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 110 transitions, 364 flow [2024-10-12 00:03:21,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:21,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:21,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2024-10-12 00:03:21,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7317708333333334 [2024-10-12 00:03:21,759 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 222 flow. Second operand 4 states and 281 transitions. [2024-10-12 00:03:21,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 110 transitions, 364 flow [2024-10-12 00:03:21,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 110 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:03:21,765 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 228 flow [2024-10-12 00:03:21,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2024-10-12 00:03:21,766 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 4 predicate places. [2024-10-12 00:03:21,766 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 228 flow [2024-10-12 00:03:21,767 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) [2024-10-12 00:03:21,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:21,767 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:21,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 00:03:21,768 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:21,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:21,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1168358703, now seen corresponding path program 1 times [2024-10-12 00:03:21,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:21,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164744489] [2024-10-12 00:03:21,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:21,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:21,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:21,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164744489] [2024-10-12 00:03:21,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164744489] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:21,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:21,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:21,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214257990] [2024-10-12 00:03:21,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:21,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:21,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:21,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:21,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:21,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2024-10-12 00:03:21,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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) [2024-10-12 00:03:21,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:21,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2024-10-12 00:03:21,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:22,129 INFO L124 PetriNetUnfolderBase]: 881/2192 cut-off events. [2024-10-12 00:03:22,129 INFO L125 PetriNetUnfolderBase]: For 685/693 co-relation queries the response was YES. [2024-10-12 00:03:22,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4006 conditions, 2192 events. 881/2192 cut-off events. For 685/693 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 15893 event pairs, 302 based on Foata normal form. 38/1879 useless extension candidates. Maximal degree in co-relation 2250. Up to 662 conditions per place. [2024-10-12 00:03:22,144 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 51 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-10-12 00:03:22,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 109 transitions, 370 flow [2024-10-12 00:03:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2024-10-12 00:03:22,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7213541666666666 [2024-10-12 00:03:22,147 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 228 flow. Second operand 4 states and 277 transitions. [2024-10-12 00:03:22,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 109 transitions, 370 flow [2024-10-12 00:03:22,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 109 transitions, 362 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:03:22,152 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 224 flow [2024-10-12 00:03:22,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=92, PETRI_TRANSITIONS=92} [2024-10-12 00:03:22,153 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 3 predicate places. [2024-10-12 00:03:22,153 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 224 flow [2024-10-12 00:03:22,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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) [2024-10-12 00:03:22,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:22,154 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:22,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 00:03:22,154 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:22,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:22,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1889321792, now seen corresponding path program 1 times [2024-10-12 00:03:22,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:22,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206486268] [2024-10-12 00:03:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:22,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:22,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:22,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:22,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206486268] [2024-10-12 00:03:22,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206486268] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:22,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:22,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:22,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309447104] [2024-10-12 00:03:22,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:22,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:22,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:22,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:22,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:22,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-12 00:03:22,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2024-10-12 00:03:22,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:22,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-12 00:03:22,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:22,622 INFO L124 PetriNetUnfolderBase]: 1246/2933 cut-off events. [2024-10-12 00:03:22,623 INFO L125 PetriNetUnfolderBase]: For 809/844 co-relation queries the response was YES. [2024-10-12 00:03:22,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5351 conditions, 2933 events. 1246/2933 cut-off events. For 809/844 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 22744 event pairs, 474 based on Foata normal form. 101/2503 useless extension candidates. Maximal degree in co-relation 2716. Up to 1128 conditions per place. [2024-10-12 00:03:22,643 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 76 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2024-10-12 00:03:22,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 131 transitions, 514 flow [2024-10-12 00:03:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:22,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:22,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2024-10-12 00:03:22,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.765625 [2024-10-12 00:03:22,645 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 224 flow. Second operand 4 states and 294 transitions. [2024-10-12 00:03:22,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 131 transitions, 514 flow [2024-10-12 00:03:22,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 131 transitions, 494 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:03:22,651 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 250 flow [2024-10-12 00:03:22,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2024-10-12 00:03:22,652 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 5 predicate places. [2024-10-12 00:03:22,653 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 250 flow [2024-10-12 00:03:22,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2024-10-12 00:03:22,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:22,654 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:22,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:03:22,654 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:22,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:22,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1859381675, now seen corresponding path program 1 times [2024-10-12 00:03:22,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:22,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750878220] [2024-10-12 00:03:22,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:22,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:22,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:22,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750878220] [2024-10-12 00:03:22,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750878220] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:22,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:22,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:22,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035921693] [2024-10-12 00:03:22,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:22,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:03:22,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:22,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:03:22,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:03:22,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 96 [2024-10-12 00:03:22,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 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) [2024-10-12 00:03:22,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:22,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 96 [2024-10-12 00:03:22,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:23,147 INFO L124 PetriNetUnfolderBase]: 1330/2890 cut-off events. [2024-10-12 00:03:23,148 INFO L125 PetriNetUnfolderBase]: For 769/810 co-relation queries the response was YES. [2024-10-12 00:03:23,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5842 conditions, 2890 events. 1330/2890 cut-off events. For 769/810 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 20817 event pairs, 386 based on Foata normal form. 23/2635 useless extension candidates. Maximal degree in co-relation 3442. Up to 877 conditions per place. [2024-10-12 00:03:23,167 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 74 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2024-10-12 00:03:23,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 131 transitions, 524 flow [2024-10-12 00:03:23,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:03:23,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:03:23,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 349 transitions. [2024-10-12 00:03:23,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7270833333333333 [2024-10-12 00:03:23,169 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 250 flow. Second operand 5 states and 349 transitions. [2024-10-12 00:03:23,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 131 transitions, 524 flow [2024-10-12 00:03:23,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 131 transitions, 524 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:03:23,177 INFO L231 Difference]: Finished difference. Result has 97 places, 93 transitions, 260 flow [2024-10-12 00:03:23,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=97, PETRI_TRANSITIONS=93} [2024-10-12 00:03:23,180 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2024-10-12 00:03:23,180 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 93 transitions, 260 flow [2024-10-12 00:03:23,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 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) [2024-10-12 00:03:23,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:23,181 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:23,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:03:23,181 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:23,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:23,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1859380650, now seen corresponding path program 1 times [2024-10-12 00:03:23,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:23,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556965529] [2024-10-12 00:03:23,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:23,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:23,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:23,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556965529] [2024-10-12 00:03:23,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556965529] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:23,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:23,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:23,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343252231] [2024-10-12 00:03:23,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:23,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:23,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:23,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:23,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:23,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-12 00:03:23,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 93 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 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) [2024-10-12 00:03:23,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:23,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-12 00:03:23,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:23,575 INFO L124 PetriNetUnfolderBase]: 1112/2762 cut-off events. [2024-10-12 00:03:23,576 INFO L125 PetriNetUnfolderBase]: For 1214/1237 co-relation queries the response was YES. [2024-10-12 00:03:23,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5470 conditions, 2762 events. 1112/2762 cut-off events. For 1214/1237 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 21445 event pairs, 515 based on Foata normal form. 49/2477 useless extension candidates. Maximal degree in co-relation 2020. Up to 1170 conditions per place. [2024-10-12 00:03:23,605 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 76 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-10-12 00:03:23,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 131 transitions, 532 flow [2024-10-12 00:03:23,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:23,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:23,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2024-10-12 00:03:23,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7578125 [2024-10-12 00:03:23,607 INFO L175 Difference]: Start difference. First operand has 97 places, 93 transitions, 260 flow. Second operand 4 states and 291 transitions. [2024-10-12 00:03:23,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 131 transitions, 532 flow [2024-10-12 00:03:23,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 131 transitions, 520 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:03:23,615 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 250 flow [2024-10-12 00:03:23,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2024-10-12 00:03:23,616 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2024-10-12 00:03:23,617 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 250 flow [2024-10-12 00:03:23,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 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) [2024-10-12 00:03:23,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:23,617 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:23,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:03:23,618 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:23,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:23,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1560567403, now seen corresponding path program 1 times [2024-10-12 00:03:23,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:23,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297922440] [2024-10-12 00:03:23,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:23,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:23,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:23,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:23,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297922440] [2024-10-12 00:03:23,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297922440] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:23,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:23,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:23,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654282539] [2024-10-12 00:03:23,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:23,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:23,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:23,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:23,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:23,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2024-10-12 00:03:23,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 250 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) [2024-10-12 00:03:23,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:23,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2024-10-12 00:03:23,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:23,984 INFO L124 PetriNetUnfolderBase]: 1010/2629 cut-off events. [2024-10-12 00:03:23,984 INFO L125 PetriNetUnfolderBase]: For 956/983 co-relation queries the response was YES. [2024-10-12 00:03:23,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4991 conditions, 2629 events. 1010/2629 cut-off events. For 956/983 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 20917 event pairs, 329 based on Foata normal form. 27/2289 useless extension candidates. Maximal degree in co-relation 2586. Up to 813 conditions per place. [2024-10-12 00:03:24,009 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 53 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-10-12 00:03:24,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 109 transitions, 422 flow [2024-10-12 00:03:24,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:24,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:24,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2024-10-12 00:03:24,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-10-12 00:03:24,012 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 250 flow. Second operand 4 states and 280 transitions. [2024-10-12 00:03:24,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 109 transitions, 422 flow [2024-10-12 00:03:24,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:03:24,022 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 250 flow [2024-10-12 00:03:24,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2024-10-12 00:03:24,023 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2024-10-12 00:03:24,023 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 250 flow [2024-10-12 00:03:24,024 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) [2024-10-12 00:03:24,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:24,024 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:24,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 00:03:24,025 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:24,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:24,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1806256300, now seen corresponding path program 1 times [2024-10-12 00:03:24,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:24,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239055818] [2024-10-12 00:03:24,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:24,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:24,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:24,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239055818] [2024-10-12 00:03:24,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239055818] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:24,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:24,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:03:24,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705784862] [2024-10-12 00:03:24,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:24,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:03:24,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:24,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:03:24,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:03:24,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2024-10-12 00:03:24,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 53.333333333333336) internal successors, (320), 6 states have internal predecessors, (320), 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) [2024-10-12 00:03:24,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:24,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2024-10-12 00:03:24,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:24,543 INFO L124 PetriNetUnfolderBase]: 1293/2819 cut-off events. [2024-10-12 00:03:24,543 INFO L125 PetriNetUnfolderBase]: For 1297/1348 co-relation queries the response was YES. [2024-10-12 00:03:24,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5812 conditions, 2819 events. 1293/2819 cut-off events. For 1297/1348 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 20236 event pairs, 338 based on Foata normal form. 97/2634 useless extension candidates. Maximal degree in co-relation 3384. Up to 816 conditions per place. [2024-10-12 00:03:24,561 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 90 selfloop transitions, 9 changer transitions 0/148 dead transitions. [2024-10-12 00:03:24,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 148 transitions, 640 flow [2024-10-12 00:03:24,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:03:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:03:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 402 transitions. [2024-10-12 00:03:24,563 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-10-12 00:03:24,563 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 250 flow. Second operand 6 states and 402 transitions. [2024-10-12 00:03:24,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 148 transitions, 640 flow [2024-10-12 00:03:24,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 148 transitions, 614 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:03:24,571 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 267 flow [2024-10-12 00:03:24,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2024-10-12 00:03:24,574 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2024-10-12 00:03:24,574 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 267 flow [2024-10-12 00:03:24,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.333333333333336) internal successors, (320), 6 states have internal predecessors, (320), 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) [2024-10-12 00:03:24,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:24,575 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:24,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 00:03:24,576 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:24,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:24,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1132918276, now seen corresponding path program 1 times [2024-10-12 00:03:24,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:24,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221269386] [2024-10-12 00:03:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:24,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:24,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:24,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:24,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221269386] [2024-10-12 00:03:24,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221269386] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:24,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:24,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:24,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886514554] [2024-10-12 00:03:24,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:24,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:24,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:24,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:24,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:24,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2024-10-12 00:03:24,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2024-10-12 00:03:24,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:24,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2024-10-12 00:03:24,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:24,912 INFO L124 PetriNetUnfolderBase]: 1012/2582 cut-off events. [2024-10-12 00:03:24,912 INFO L125 PetriNetUnfolderBase]: For 1882/1966 co-relation queries the response was YES. [2024-10-12 00:03:24,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5208 conditions, 2582 events. 1012/2582 cut-off events. For 1882/1966 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 20144 event pairs, 331 based on Foata normal form. 103/2336 useless extension candidates. Maximal degree in co-relation 2662. Up to 817 conditions per place. [2024-10-12 00:03:24,927 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 56 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-10-12 00:03:24,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 109 transitions, 457 flow [2024-10-12 00:03:24,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:24,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2024-10-12 00:03:24,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-10-12 00:03:24,929 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 267 flow. Second operand 4 states and 276 transitions. [2024-10-12 00:03:24,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 109 transitions, 457 flow [2024-10-12 00:03:24,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 435 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:03:24,935 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 258 flow [2024-10-12 00:03:24,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2024-10-12 00:03:24,936 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2024-10-12 00:03:24,936 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 258 flow [2024-10-12 00:03:24,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2024-10-12 00:03:24,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:24,937 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:24,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 00:03:24,937 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:24,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:24,937 INFO L85 PathProgramCache]: Analyzing trace with hash 787947419, now seen corresponding path program 1 times [2024-10-12 00:03:24,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:24,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857694651] [2024-10-12 00:03:24,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:24,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:24,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:24,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:24,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857694651] [2024-10-12 00:03:24,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857694651] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:24,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:24,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:03:24,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453133117] [2024-10-12 00:03:24,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:24,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:03:24,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:24,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:03:24,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:03:25,013 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2024-10-12 00:03:25,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 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) [2024-10-12 00:03:25,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:25,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2024-10-12 00:03:25,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:25,418 INFO L124 PetriNetUnfolderBase]: 1252/2772 cut-off events. [2024-10-12 00:03:25,419 INFO L125 PetriNetUnfolderBase]: For 1338/1363 co-relation queries the response was YES. [2024-10-12 00:03:25,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5847 conditions, 2772 events. 1252/2772 cut-off events. For 1338/1363 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 20084 event pairs, 485 based on Foata normal form. 59/2517 useless extension candidates. Maximal degree in co-relation 2883. Up to 1180 conditions per place. [2024-10-12 00:03:25,436 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 113 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2024-10-12 00:03:25,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 167 transitions, 758 flow [2024-10-12 00:03:25,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:03:25,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:03:25,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 424 transitions. [2024-10-12 00:03:25,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2024-10-12 00:03:25,439 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 258 flow. Second operand 6 states and 424 transitions. [2024-10-12 00:03:25,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 167 transitions, 758 flow [2024-10-12 00:03:25,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 167 transitions, 721 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-12 00:03:25,449 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 274 flow [2024-10-12 00:03:25,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2024-10-12 00:03:25,450 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2024-10-12 00:03:25,450 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 274 flow [2024-10-12 00:03:25,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 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) [2024-10-12 00:03:25,451 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:25,451 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:25,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 00:03:25,451 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:25,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:25,452 INFO L85 PathProgramCache]: Analyzing trace with hash 760729006, now seen corresponding path program 1 times [2024-10-12 00:03:25,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:25,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638632913] [2024-10-12 00:03:25,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:25,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:25,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:25,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638632913] [2024-10-12 00:03:25,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638632913] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:25,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:25,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:25,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120947926] [2024-10-12 00:03:25,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:25,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:25,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:25,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:25,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:25,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-12 00:03:25,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2024-10-12 00:03:25,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:25,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-12 00:03:25,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:25,776 INFO L124 PetriNetUnfolderBase]: 1093/2619 cut-off events. [2024-10-12 00:03:25,776 INFO L125 PetriNetUnfolderBase]: For 2292/2372 co-relation queries the response was YES. [2024-10-12 00:03:25,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5432 conditions, 2619 events. 1093/2619 cut-off events. For 2292/2372 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19881 event pairs, 519 based on Foata normal form. 113/2383 useless extension candidates. Maximal degree in co-relation 4102. Up to 1178 conditions per place. [2024-10-12 00:03:25,796 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 80 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-10-12 00:03:25,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 131 transitions, 602 flow [2024-10-12 00:03:25,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:25,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:25,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2024-10-12 00:03:25,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7526041666666666 [2024-10-12 00:03:25,798 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 274 flow. Second operand 4 states and 289 transitions. [2024-10-12 00:03:25,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 131 transitions, 602 flow [2024-10-12 00:03:25,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 131 transitions, 559 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-10-12 00:03:25,805 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 257 flow [2024-10-12 00:03:25,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2024-10-12 00:03:25,806 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2024-10-12 00:03:25,806 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 257 flow [2024-10-12 00:03:25,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2024-10-12 00:03:25,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:25,807 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:25,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 00:03:25,807 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:25,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:25,808 INFO L85 PathProgramCache]: Analyzing trace with hash 760727981, now seen corresponding path program 1 times [2024-10-12 00:03:25,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:25,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214115376] [2024-10-12 00:03:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:25,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:25,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:25,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:25,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214115376] [2024-10-12 00:03:25,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214115376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:25,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:25,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:25,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439742030] [2024-10-12 00:03:25,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:25,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:03:25,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:25,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:03:25,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:03:25,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 96 [2024-10-12 00:03:25,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 257 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) [2024-10-12 00:03:25,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:25,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 96 [2024-10-12 00:03:25,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:26,207 INFO L124 PetriNetUnfolderBase]: 1264/2720 cut-off events. [2024-10-12 00:03:26,207 INFO L125 PetriNetUnfolderBase]: For 1563/1663 co-relation queries the response was YES. [2024-10-12 00:03:26,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5729 conditions, 2720 events. 1264/2720 cut-off events. For 1563/1663 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19457 event pairs, 331 based on Foata normal form. 100/2537 useless extension candidates. Maximal degree in co-relation 4343. Up to 843 conditions per place. [2024-10-12 00:03:26,222 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 78 selfloop transitions, 6 changer transitions 0/129 dead transitions. [2024-10-12 00:03:26,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 129 transitions, 563 flow [2024-10-12 00:03:26,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:03:26,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:03:26,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 347 transitions. [2024-10-12 00:03:26,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7229166666666667 [2024-10-12 00:03:26,224 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 257 flow. Second operand 5 states and 347 transitions. [2024-10-12 00:03:26,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 129 transitions, 563 flow [2024-10-12 00:03:26,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 129 transitions, 557 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:03:26,229 INFO L231 Difference]: Finished difference. Result has 97 places, 89 transitions, 261 flow [2024-10-12 00:03:26,230 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=97, PETRI_TRANSITIONS=89} [2024-10-12 00:03:26,230 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2024-10-12 00:03:26,230 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 89 transitions, 261 flow [2024-10-12 00:03:26,231 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) [2024-10-12 00:03:26,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:26,231 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:26,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 00:03:26,231 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:26,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:26,232 INFO L85 PathProgramCache]: Analyzing trace with hash -645491785, now seen corresponding path program 1 times [2024-10-12 00:03:26,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:26,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853494626] [2024-10-12 00:03:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:26,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:26,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:26,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:26,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853494626] [2024-10-12 00:03:26,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853494626] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:26,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:26,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:26,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133481807] [2024-10-12 00:03:26,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:26,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:26,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:26,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:26,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:26,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-12 00:03:26,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 89 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2024-10-12 00:03:26,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:26,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-12 00:03:26,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:26,609 INFO L124 PetriNetUnfolderBase]: 1379/3226 cut-off events. [2024-10-12 00:03:26,609 INFO L125 PetriNetUnfolderBase]: For 1869/1950 co-relation queries the response was YES. [2024-10-12 00:03:26,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6478 conditions, 3226 events. 1379/3226 cut-off events. For 1869/1950 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 25038 event pairs, 586 based on Foata normal form. 149/2946 useless extension candidates. Maximal degree in co-relation 5344. Up to 1307 conditions per place. [2024-10-12 00:03:26,625 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 81 selfloop transitions, 6 changer transitions 0/130 dead transitions. [2024-10-12 00:03:26,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 130 transitions, 569 flow [2024-10-12 00:03:26,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:26,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:26,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2024-10-12 00:03:26,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2024-10-12 00:03:26,630 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 261 flow. Second operand 4 states and 296 transitions. [2024-10-12 00:03:26,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 130 transitions, 569 flow [2024-10-12 00:03:26,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 130 transitions, 548 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:03:26,638 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 290 flow [2024-10-12 00:03:26,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2024-10-12 00:03:26,639 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 10 predicate places. [2024-10-12 00:03:26,639 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 290 flow [2024-10-12 00:03:26,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2024-10-12 00:03:26,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:26,640 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:26,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 00:03:26,640 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:26,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:26,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2107731751, now seen corresponding path program 1 times [2024-10-12 00:03:26,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:26,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093245408] [2024-10-12 00:03:26,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:26,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:26,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:26,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093245408] [2024-10-12 00:03:26,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093245408] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:26,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:26,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:03:26,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280661678] [2024-10-12 00:03:26,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:26,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:03:26,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:26,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:03:26,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:03:26,760 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2024-10-12 00:03:26,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 53.666666666666664) internal successors, (322), 6 states have internal predecessors, (322), 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) [2024-10-12 00:03:26,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:26,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2024-10-12 00:03:26,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:27,141 INFO L124 PetriNetUnfolderBase]: 1414/3063 cut-off events. [2024-10-12 00:03:27,142 INFO L125 PetriNetUnfolderBase]: For 2674/2846 co-relation queries the response was YES. [2024-10-12 00:03:27,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6782 conditions, 3063 events. 1414/3063 cut-off events. For 2674/2846 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 22423 event pairs, 383 based on Foata normal form. 211/2947 useless extension candidates. Maximal degree in co-relation 5324. Up to 931 conditions per place. [2024-10-12 00:03:27,157 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 103 selfloop transitions, 9 changer transitions 0/157 dead transitions. [2024-10-12 00:03:27,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 157 transitions, 802 flow [2024-10-12 00:03:27,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:03:27,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:03:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 399 transitions. [2024-10-12 00:03:27,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2024-10-12 00:03:27,159 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 290 flow. Second operand 6 states and 399 transitions. [2024-10-12 00:03:27,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 157 transitions, 802 flow [2024-10-12 00:03:27,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 157 transitions, 802 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:03:27,166 INFO L231 Difference]: Finished difference. Result has 104 places, 91 transitions, 315 flow [2024-10-12 00:03:27,166 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=315, PETRI_PLACES=104, PETRI_TRANSITIONS=91} [2024-10-12 00:03:27,167 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 15 predicate places. [2024-10-12 00:03:27,167 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 91 transitions, 315 flow [2024-10-12 00:03:27,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.666666666666664) internal successors, (322), 6 states have internal predecessors, (322), 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) [2024-10-12 00:03:27,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:27,168 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:27,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 00:03:27,168 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:27,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:27,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1464591931, now seen corresponding path program 1 times [2024-10-12 00:03:27,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:27,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448940714] [2024-10-12 00:03:27,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:27,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:27,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:27,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448940714] [2024-10-12 00:03:27,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448940714] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:27,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:27,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:03:27,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458285014] [2024-10-12 00:03:27,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:27,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:03:27,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:27,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:03:27,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:03:27,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2024-10-12 00:03:27,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 91 transitions, 315 flow. Second operand has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 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) [2024-10-12 00:03:27,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:27,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2024-10-12 00:03:27,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:27,927 INFO L124 PetriNetUnfolderBase]: 2099/4807 cut-off events. [2024-10-12 00:03:27,927 INFO L125 PetriNetUnfolderBase]: For 4844/5046 co-relation queries the response was YES. [2024-10-12 00:03:27,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11047 conditions, 4807 events. 2099/4807 cut-off events. For 4844/5046 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 39643 event pairs, 512 based on Foata normal form. 232/4615 useless extension candidates. Maximal degree in co-relation 6345. Up to 1211 conditions per place. [2024-10-12 00:03:27,959 INFO L140 encePairwiseOnDemand]: 86/96 looper letters, 147 selfloop transitions, 14 changer transitions 0/202 dead transitions. [2024-10-12 00:03:27,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 202 transitions, 1067 flow [2024-10-12 00:03:27,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:03:27,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:03:27,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 486 transitions. [2024-10-12 00:03:27,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7232142857142857 [2024-10-12 00:03:27,962 INFO L175 Difference]: Start difference. First operand has 104 places, 91 transitions, 315 flow. Second operand 7 states and 486 transitions. [2024-10-12 00:03:27,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 202 transitions, 1067 flow [2024-10-12 00:03:27,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 202 transitions, 1009 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:03:27,983 INFO L231 Difference]: Finished difference. Result has 108 places, 97 transitions, 384 flow [2024-10-12 00:03:27,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=108, PETRI_TRANSITIONS=97} [2024-10-12 00:03:27,984 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 19 predicate places. [2024-10-12 00:03:27,984 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 384 flow [2024-10-12 00:03:27,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 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) [2024-10-12 00:03:27,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:27,984 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:27,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 00:03:27,984 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:27,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:27,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1862492755, now seen corresponding path program 1 times [2024-10-12 00:03:27,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:27,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275606571] [2024-10-12 00:03:27,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:27,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:28,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:28,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:28,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275606571] [2024-10-12 00:03:28,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275606571] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:28,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:28,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:28,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149226724] [2024-10-12 00:03:28,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:28,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:28,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:28,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:28,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:28,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-12 00:03:28,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 97 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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) [2024-10-12 00:03:28,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:28,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-12 00:03:28,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:28,449 INFO L124 PetriNetUnfolderBase]: 2179/4833 cut-off events. [2024-10-12 00:03:28,449 INFO L125 PetriNetUnfolderBase]: For 7374/7666 co-relation queries the response was YES. [2024-10-12 00:03:28,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11694 conditions, 4833 events. 2179/4833 cut-off events. For 7374/7666 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 39355 event pairs, 942 based on Foata normal form. 249/4669 useless extension candidates. Maximal degree in co-relation 7609. Up to 2118 conditions per place. [2024-10-12 00:03:28,478 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 100 selfloop transitions, 5 changer transitions 0/151 dead transitions. [2024-10-12 00:03:28,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 151 transitions, 911 flow [2024-10-12 00:03:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 287 transitions. [2024-10-12 00:03:28,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7473958333333334 [2024-10-12 00:03:28,480 INFO L175 Difference]: Start difference. First operand has 108 places, 97 transitions, 384 flow. Second operand 4 states and 287 transitions. [2024-10-12 00:03:28,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 151 transitions, 911 flow [2024-10-12 00:03:28,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 151 transitions, 891 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-12 00:03:28,500 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 387 flow [2024-10-12 00:03:28,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=387, PETRI_PLACES=109, PETRI_TRANSITIONS=97} [2024-10-12 00:03:28,501 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 20 predicate places. [2024-10-12 00:03:28,501 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 387 flow [2024-10-12 00:03:28,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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) [2024-10-12 00:03:28,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:28,501 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:28,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 00:03:28,502 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:28,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:28,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1842321381, now seen corresponding path program 1 times [2024-10-12 00:03:28,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:28,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961574142] [2024-10-12 00:03:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:28,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:28,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:28,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961574142] [2024-10-12 00:03:28,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961574142] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:28,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:28,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:03:28,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329419201] [2024-10-12 00:03:28,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:28,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:03:28,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:28,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:03:28,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:03:28,571 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-12 00:03:28,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 97 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 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) [2024-10-12 00:03:28,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:28,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-12 00:03:28,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:29,110 INFO L124 PetriNetUnfolderBase]: 2586/6161 cut-off events. [2024-10-12 00:03:29,111 INFO L125 PetriNetUnfolderBase]: For 8697/8892 co-relation queries the response was YES. [2024-10-12 00:03:29,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14751 conditions, 6161 events. 2586/6161 cut-off events. For 8697/8892 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 54366 event pairs, 690 based on Foata normal form. 267/5861 useless extension candidates. Maximal degree in co-relation 9214. Up to 1628 conditions per place. [2024-10-12 00:03:29,138 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 115 selfloop transitions, 10 changer transitions 0/166 dead transitions. [2024-10-12 00:03:29,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 166 transitions, 911 flow [2024-10-12 00:03:29,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:03:29,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:03:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 369 transitions. [2024-10-12 00:03:29,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.76875 [2024-10-12 00:03:29,140 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 387 flow. Second operand 5 states and 369 transitions. [2024-10-12 00:03:29,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 166 transitions, 911 flow [2024-10-12 00:03:29,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 166 transitions, 895 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:03:29,170 INFO L231 Difference]: Finished difference. Result has 113 places, 98 transitions, 427 flow [2024-10-12 00:03:29,171 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=113, PETRI_TRANSITIONS=98} [2024-10-12 00:03:29,171 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 24 predicate places. [2024-10-12 00:03:29,171 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 98 transitions, 427 flow [2024-10-12 00:03:29,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 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) [2024-10-12 00:03:29,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:29,172 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:29,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 00:03:29,172 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:29,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:29,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1694324694, now seen corresponding path program 1 times [2024-10-12 00:03:29,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:29,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205409956] [2024-10-12 00:03:29,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:29,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:29,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:29,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205409956] [2024-10-12 00:03:29,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205409956] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:29,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:29,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:29,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353385321] [2024-10-12 00:03:29,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:29,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:29,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:29,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:29,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:29,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-12 00:03:29,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 98 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2024-10-12 00:03:29,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:29,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-12 00:03:29,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:29,697 INFO L124 PetriNetUnfolderBase]: 3213/7418 cut-off events. [2024-10-12 00:03:29,698 INFO L125 PetriNetUnfolderBase]: For 12698/13028 co-relation queries the response was YES. [2024-10-12 00:03:29,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17990 conditions, 7418 events. 3213/7418 cut-off events. For 12698/13028 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 67405 event pairs, 1525 based on Foata normal form. 432/6977 useless extension candidates. Maximal degree in co-relation 9302. Up to 3150 conditions per place. [2024-10-12 00:03:29,731 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 111 selfloop transitions, 7 changer transitions 0/159 dead transitions. [2024-10-12 00:03:29,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 159 transitions, 1071 flow [2024-10-12 00:03:29,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:29,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:29,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2024-10-12 00:03:29,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.765625 [2024-10-12 00:03:29,733 INFO L175 Difference]: Start difference. First operand has 113 places, 98 transitions, 427 flow. Second operand 4 states and 294 transitions. [2024-10-12 00:03:29,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 159 transitions, 1071 flow [2024-10-12 00:03:29,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 159 transitions, 1036 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:03:29,765 INFO L231 Difference]: Finished difference. Result has 115 places, 100 transitions, 456 flow [2024-10-12 00:03:29,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=456, PETRI_PLACES=115, PETRI_TRANSITIONS=100} [2024-10-12 00:03:29,765 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 26 predicate places. [2024-10-12 00:03:29,765 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 100 transitions, 456 flow [2024-10-12 00:03:29,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2024-10-12 00:03:29,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:29,766 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:29,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 00:03:29,766 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:29,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:29,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1277388195, now seen corresponding path program 1 times [2024-10-12 00:03:29,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:29,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790403790] [2024-10-12 00:03:29,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:29,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:29,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:29,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790403790] [2024-10-12 00:03:29,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790403790] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:29,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:29,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:03:29,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410314742] [2024-10-12 00:03:29,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:29,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 00:03:29,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:29,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 00:03:29,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 00:03:30,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2024-10-12 00:03:30,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 100 transitions, 456 flow. Second operand has 7 states, 7 states have (on average 51.857142857142854) internal successors, (363), 7 states have internal predecessors, (363), 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) [2024-10-12 00:03:30,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:30,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2024-10-12 00:03:30,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:30,921 INFO L124 PetriNetUnfolderBase]: 4198/7932 cut-off events. [2024-10-12 00:03:30,921 INFO L125 PetriNetUnfolderBase]: For 12507/13024 co-relation queries the response was YES. [2024-10-12 00:03:30,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21854 conditions, 7932 events. 4198/7932 cut-off events. For 12507/13024 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 62045 event pairs, 200 based on Foata normal form. 417/8046 useless extension candidates. Maximal degree in co-relation 19868. Up to 3397 conditions per place. [2024-10-12 00:03:30,947 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 136 selfloop transitions, 16 changer transitions 0/191 dead transitions. [2024-10-12 00:03:30,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 191 transitions, 1186 flow [2024-10-12 00:03:30,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:03:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:03:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 462 transitions. [2024-10-12 00:03:30,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-12 00:03:30,950 INFO L175 Difference]: Start difference. First operand has 115 places, 100 transitions, 456 flow. Second operand 7 states and 462 transitions. [2024-10-12 00:03:30,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 191 transitions, 1186 flow [2024-10-12 00:03:30,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 191 transitions, 1186 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:03:30,996 INFO L231 Difference]: Finished difference. Result has 120 places, 99 transitions, 486 flow [2024-10-12 00:03:30,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=486, PETRI_PLACES=120, PETRI_TRANSITIONS=99} [2024-10-12 00:03:30,997 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 31 predicate places. [2024-10-12 00:03:30,997 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 99 transitions, 486 flow [2024-10-12 00:03:30,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 51.857142857142854) internal successors, (363), 7 states have internal predecessors, (363), 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) [2024-10-12 00:03:30,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:30,997 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:30,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 00:03:30,997 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:30,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:30,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1942041184, now seen corresponding path program 1 times [2024-10-12 00:03:30,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:30,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827102743] [2024-10-12 00:03:30,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:30,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:31,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:31,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827102743] [2024-10-12 00:03:31,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827102743] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:31,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:31,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:31,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683772772] [2024-10-12 00:03:31,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:31,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:31,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:31,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:31,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:31,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2024-10-12 00:03:31,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 99 transitions, 486 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) [2024-10-12 00:03:31,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:31,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2024-10-12 00:03:31,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:31,476 INFO L124 PetriNetUnfolderBase]: 2584/6344 cut-off events. [2024-10-12 00:03:31,477 INFO L125 PetriNetUnfolderBase]: For 15151/15458 co-relation queries the response was YES. [2024-10-12 00:03:31,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16682 conditions, 6344 events. 2584/6344 cut-off events. For 15151/15458 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 57497 event pairs, 643 based on Foata normal form. 305/6249 useless extension candidates. Maximal degree in co-relation 12348. Up to 2330 conditions per place. [2024-10-12 00:03:31,521 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 66 selfloop transitions, 11 changer transitions 0/121 dead transitions. [2024-10-12 00:03:31,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 121 transitions, 743 flow [2024-10-12 00:03:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:31,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:31,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2024-10-12 00:03:31,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7317708333333334 [2024-10-12 00:03:31,523 INFO L175 Difference]: Start difference. First operand has 120 places, 99 transitions, 486 flow. Second operand 4 states and 281 transitions. [2024-10-12 00:03:31,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 121 transitions, 743 flow [2024-10-12 00:03:31,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 121 transitions, 716 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:03:31,571 INFO L231 Difference]: Finished difference. Result has 117 places, 98 transitions, 477 flow [2024-10-12 00:03:31,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=477, PETRI_PLACES=117, PETRI_TRANSITIONS=98} [2024-10-12 00:03:31,572 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 28 predicate places. [2024-10-12 00:03:31,572 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 98 transitions, 477 flow [2024-10-12 00:03:31,572 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) [2024-10-12 00:03:31,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:31,572 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:31,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 00:03:31,572 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:31,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:31,573 INFO L85 PathProgramCache]: Analyzing trace with hash -984457133, now seen corresponding path program 1 times [2024-10-12 00:03:31,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:31,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508363720] [2024-10-12 00:03:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:31,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:31,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:31,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508363720] [2024-10-12 00:03:31,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508363720] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:31,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:31,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:03:31,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312298982] [2024-10-12 00:03:31,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:31,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:03:31,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:31,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:03:31,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:03:31,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2024-10-12 00:03:31,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 98 transitions, 477 flow. Second operand has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 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) [2024-10-12 00:03:31,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:31,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2024-10-12 00:03:31,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:32,619 INFO L124 PetriNetUnfolderBase]: 4596/10389 cut-off events. [2024-10-12 00:03:32,620 INFO L125 PetriNetUnfolderBase]: For 23319/23782 co-relation queries the response was YES. [2024-10-12 00:03:32,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27215 conditions, 10389 events. 4596/10389 cut-off events. For 23319/23782 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 98430 event pairs, 1184 based on Foata normal form. 513/10075 useless extension candidates. Maximal degree in co-relation 16215. Up to 2698 conditions per place. [2024-10-12 00:03:32,661 INFO L140 encePairwiseOnDemand]: 86/96 looper letters, 201 selfloop transitions, 13 changer transitions 0/253 dead transitions. [2024-10-12 00:03:32,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 253 transitions, 2013 flow [2024-10-12 00:03:32,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:03:32,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:03:32,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 481 transitions. [2024-10-12 00:03:32,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7157738095238095 [2024-10-12 00:03:32,663 INFO L175 Difference]: Start difference. First operand has 117 places, 98 transitions, 477 flow. Second operand 7 states and 481 transitions. [2024-10-12 00:03:32,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 253 transitions, 2013 flow [2024-10-12 00:03:32,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 253 transitions, 1891 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:03:32,757 INFO L231 Difference]: Finished difference. Result has 122 places, 103 transitions, 528 flow [2024-10-12 00:03:32,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=528, PETRI_PLACES=122, PETRI_TRANSITIONS=103} [2024-10-12 00:03:32,758 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 33 predicate places. [2024-10-12 00:03:32,758 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 103 transitions, 528 flow [2024-10-12 00:03:32,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 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) [2024-10-12 00:03:32,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:32,758 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:32,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 00:03:32,758 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:32,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:32,759 INFO L85 PathProgramCache]: Analyzing trace with hash -944327586, now seen corresponding path program 1 times [2024-10-12 00:03:32,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:32,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631191002] [2024-10-12 00:03:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:32,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:32,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:32,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631191002] [2024-10-12 00:03:32,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631191002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:32,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:32,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 00:03:32,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504342545] [2024-10-12 00:03:32,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:32,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 00:03:32,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:32,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 00:03:32,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-12 00:03:32,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-10-12 00:03:32,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 103 transitions, 528 flow. Second operand has 9 states, 9 states have (on average 45.333333333333336) internal successors, (408), 9 states have internal predecessors, (408), 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) [2024-10-12 00:03:32,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:32,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-10-12 00:03:32,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:33,932 INFO L124 PetriNetUnfolderBase]: 5379/10327 cut-off events. [2024-10-12 00:03:33,932 INFO L125 PetriNetUnfolderBase]: For 26270/27285 co-relation queries the response was YES. [2024-10-12 00:03:33,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30088 conditions, 10327 events. 5379/10327 cut-off events. For 26270/27285 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 85795 event pairs, 286 based on Foata normal form. 947/10838 useless extension candidates. Maximal degree in co-relation 27492. Up to 2416 conditions per place. [2024-10-12 00:03:33,992 INFO L140 encePairwiseOnDemand]: 84/96 looper letters, 205 selfloop transitions, 23 changer transitions 0/265 dead transitions. [2024-10-12 00:03:33,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 265 transitions, 1962 flow [2024-10-12 00:03:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 00:03:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-12 00:03:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 541 transitions. [2024-10-12 00:03:33,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6261574074074074 [2024-10-12 00:03:33,995 INFO L175 Difference]: Start difference. First operand has 122 places, 103 transitions, 528 flow. Second operand 9 states and 541 transitions. [2024-10-12 00:03:33,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 265 transitions, 1962 flow [2024-10-12 00:03:34,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 265 transitions, 1904 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-10-12 00:03:34,102 INFO L231 Difference]: Finished difference. Result has 128 places, 103 transitions, 572 flow [2024-10-12 00:03:34,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=572, PETRI_PLACES=128, PETRI_TRANSITIONS=103} [2024-10-12 00:03:34,102 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 39 predicate places. [2024-10-12 00:03:34,102 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 103 transitions, 572 flow [2024-10-12 00:03:34,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 45.333333333333336) internal successors, (408), 9 states have internal predecessors, (408), 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) [2024-10-12 00:03:34,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:34,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:34,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 00:03:34,103 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:34,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:34,103 INFO L85 PathProgramCache]: Analyzing trace with hash -650189322, now seen corresponding path program 1 times [2024-10-12 00:03:34,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:34,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621607071] [2024-10-12 00:03:34,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:34,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:34,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:34,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621607071] [2024-10-12 00:03:34,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621607071] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:34,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:34,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:34,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612358943] [2024-10-12 00:03:34,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:34,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:34,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:34,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:34,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:34,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2024-10-12 00:03:34,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 103 transitions, 572 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) [2024-10-12 00:03:34,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:34,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2024-10-12 00:03:34,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:34,814 INFO L124 PetriNetUnfolderBase]: 3856/8972 cut-off events. [2024-10-12 00:03:34,814 INFO L125 PetriNetUnfolderBase]: For 28065/28702 co-relation queries the response was YES. [2024-10-12 00:03:34,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26481 conditions, 8972 events. 3856/8972 cut-off events. For 28065/28702 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 83986 event pairs, 925 based on Foata normal form. 475/9158 useless extension candidates. Maximal degree in co-relation 17768. Up to 3639 conditions per place. [2024-10-12 00:03:34,849 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 76 selfloop transitions, 11 changer transitions 0/129 dead transitions. [2024-10-12 00:03:34,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 129 transitions, 893 flow [2024-10-12 00:03:34,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:34,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2024-10-12 00:03:34,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7213541666666666 [2024-10-12 00:03:34,850 INFO L175 Difference]: Start difference. First operand has 128 places, 103 transitions, 572 flow. Second operand 4 states and 277 transitions. [2024-10-12 00:03:34,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 129 transitions, 893 flow [2024-10-12 00:03:34,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 129 transitions, 853 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-12 00:03:34,929 INFO L231 Difference]: Finished difference. Result has 123 places, 102 transitions, 546 flow [2024-10-12 00:03:34,930 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=546, PETRI_PLACES=123, PETRI_TRANSITIONS=102} [2024-10-12 00:03:34,930 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 34 predicate places. [2024-10-12 00:03:34,930 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 102 transitions, 546 flow [2024-10-12 00:03:34,930 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) [2024-10-12 00:03:34,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:34,931 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:34,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 00:03:34,931 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:34,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:34,931 INFO L85 PathProgramCache]: Analyzing trace with hash -453430994, now seen corresponding path program 1 times [2024-10-12 00:03:34,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:34,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994778416] [2024-10-12 00:03:34,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:34,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:34,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:34,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994778416] [2024-10-12 00:03:34,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994778416] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:34,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:34,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:03:34,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534323893] [2024-10-12 00:03:34,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:34,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:03:34,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:34,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:03:34,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:03:35,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-12 00:03:35,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 102 transitions, 546 flow. Second operand has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 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) [2024-10-12 00:03:35,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:35,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-12 00:03:35,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:36,109 INFO L124 PetriNetUnfolderBase]: 5142/12284 cut-off events. [2024-10-12 00:03:36,110 INFO L125 PetriNetUnfolderBase]: For 33279/34107 co-relation queries the response was YES. [2024-10-12 00:03:36,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33831 conditions, 12284 events. 5142/12284 cut-off events. For 33279/34107 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 124009 event pairs, 1425 based on Foata normal form. 910/12205 useless extension candidates. Maximal degree in co-relation 18625. Up to 3305 conditions per place. [2024-10-12 00:03:36,187 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 152 selfloop transitions, 10 changer transitions 0/199 dead transitions. [2024-10-12 00:03:36,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 199 transitions, 1578 flow [2024-10-12 00:03:36,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:03:36,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:03:36,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 366 transitions. [2024-10-12 00:03:36,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7625 [2024-10-12 00:03:36,189 INFO L175 Difference]: Start difference. First operand has 123 places, 102 transitions, 546 flow. Second operand 5 states and 366 transitions. [2024-10-12 00:03:36,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 199 transitions, 1578 flow [2024-10-12 00:03:36,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 199 transitions, 1496 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:03:36,300 INFO L231 Difference]: Finished difference. Result has 125 places, 103 transitions, 568 flow [2024-10-12 00:03:36,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=125, PETRI_TRANSITIONS=103} [2024-10-12 00:03:36,301 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 36 predicate places. [2024-10-12 00:03:36,301 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 103 transitions, 568 flow [2024-10-12 00:03:36,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 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) [2024-10-12 00:03:36,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:36,301 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:36,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-12 00:03:36,302 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:36,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:36,302 INFO L85 PathProgramCache]: Analyzing trace with hash 790616703, now seen corresponding path program 1 times [2024-10-12 00:03:36,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:36,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570979145] [2024-10-12 00:03:36,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:36,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:36,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:36,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570979145] [2024-10-12 00:03:36,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570979145] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:36,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:36,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:36,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871763187] [2024-10-12 00:03:36,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:36,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:36,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:36,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:36,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2024-10-12 00:03:36,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 103 transitions, 568 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 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) [2024-10-12 00:03:36,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:36,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2024-10-12 00:03:36,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:38,000 INFO L124 PetriNetUnfolderBase]: 9368/22151 cut-off events. [2024-10-12 00:03:38,000 INFO L125 PetriNetUnfolderBase]: For 60546/61858 co-relation queries the response was YES. [2024-10-12 00:03:38,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62959 conditions, 22151 events. 9368/22151 cut-off events. For 60546/61858 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 229441 event pairs, 5076 based on Foata normal form. 1136/22211 useless extension candidates. Maximal degree in co-relation 57863. Up to 7515 conditions per place. [2024-10-12 00:03:38,414 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 137 selfloop transitions, 10 changer transitions 0/188 dead transitions. [2024-10-12 00:03:38,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 188 transitions, 1463 flow [2024-10-12 00:03:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:38,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2024-10-12 00:03:38,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8255208333333334 [2024-10-12 00:03:38,415 INFO L175 Difference]: Start difference. First operand has 125 places, 103 transitions, 568 flow. Second operand 4 states and 317 transitions. [2024-10-12 00:03:38,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 188 transitions, 1463 flow [2024-10-12 00:03:38,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 188 transitions, 1428 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:03:38,691 INFO L231 Difference]: Finished difference. Result has 127 places, 112 transitions, 687 flow [2024-10-12 00:03:38,692 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=687, PETRI_PLACES=127, PETRI_TRANSITIONS=112} [2024-10-12 00:03:38,692 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 38 predicate places. [2024-10-12 00:03:38,692 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 112 transitions, 687 flow [2024-10-12 00:03:38,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 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) [2024-10-12 00:03:38,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:38,692 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:38,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-12 00:03:38,693 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:38,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:38,693 INFO L85 PathProgramCache]: Analyzing trace with hash -2010155709, now seen corresponding path program 1 times [2024-10-12 00:03:38,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:38,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875639076] [2024-10-12 00:03:38,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:38,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:38,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:38,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875639076] [2024-10-12 00:03:38,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875639076] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:38,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:38,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:38,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253037865] [2024-10-12 00:03:38,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:38,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:38,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:38,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:38,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:38,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-12 00:03:38,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 112 transitions, 687 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2024-10-12 00:03:38,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:38,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-12 00:03:38,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:40,834 INFO L124 PetriNetUnfolderBase]: 10730/23943 cut-off events. [2024-10-12 00:03:40,834 INFO L125 PetriNetUnfolderBase]: For 72240/73717 co-relation queries the response was YES. [2024-10-12 00:03:41,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69415 conditions, 23943 events. 10730/23943 cut-off events. For 72240/73717 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 240312 event pairs, 4104 based on Foata normal form. 1253/24019 useless extension candidates. Maximal degree in co-relation 38136. Up to 8732 conditions per place. [2024-10-12 00:03:41,119 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 118 selfloop transitions, 13 changer transitions 0/170 dead transitions. [2024-10-12 00:03:41,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 170 transitions, 1325 flow [2024-10-12 00:03:41,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:41,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:41,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2024-10-12 00:03:41,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7578125 [2024-10-12 00:03:41,120 INFO L175 Difference]: Start difference. First operand has 127 places, 112 transitions, 687 flow. Second operand 4 states and 291 transitions. [2024-10-12 00:03:41,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 170 transitions, 1325 flow [2024-10-12 00:03:41,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 170 transitions, 1312 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:03:41,452 INFO L231 Difference]: Finished difference. Result has 128 places, 111 transitions, 690 flow [2024-10-12 00:03:41,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=690, PETRI_PLACES=128, PETRI_TRANSITIONS=111} [2024-10-12 00:03:41,453 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 39 predicate places. [2024-10-12 00:03:41,453 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 111 transitions, 690 flow [2024-10-12 00:03:41,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2024-10-12 00:03:41,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:41,453 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:41,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-12 00:03:41,453 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:41,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:41,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2047970264, now seen corresponding path program 1 times [2024-10-12 00:03:41,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:41,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321429443] [2024-10-12 00:03:41,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:41,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:41,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:41,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:41,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321429443] [2024-10-12 00:03:41,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321429443] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:41,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:41,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:41,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717225744] [2024-10-12 00:03:41,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:41,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:41,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:41,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:41,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:41,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2024-10-12 00:03:41,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 111 transitions, 690 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 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) [2024-10-12 00:03:41,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:41,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2024-10-12 00:03:41,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:43,490 INFO L124 PetriNetUnfolderBase]: 9053/22609 cut-off events. [2024-10-12 00:03:43,490 INFO L125 PetriNetUnfolderBase]: For 70083/71691 co-relation queries the response was YES. [2024-10-12 00:03:43,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63336 conditions, 22609 events. 9053/22609 cut-off events. For 70083/71691 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 242732 event pairs, 2362 based on Foata normal form. 1546/22197 useless extension candidates. Maximal degree in co-relation 61108. Up to 7952 conditions per place. [2024-10-12 00:03:43,638 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 98 selfloop transitions, 11 changer transitions 0/149 dead transitions. [2024-10-12 00:03:43,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 149 transitions, 1247 flow [2024-10-12 00:03:43,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:43,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:43,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2024-10-12 00:03:43,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-10-12 00:03:43,639 INFO L175 Difference]: Start difference. First operand has 128 places, 111 transitions, 690 flow. Second operand 4 states and 280 transitions. [2024-10-12 00:03:43,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 149 transitions, 1247 flow [2024-10-12 00:03:44,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 149 transitions, 1214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:03:44,160 INFO L231 Difference]: Finished difference. Result has 128 places, 110 transitions, 691 flow [2024-10-12 00:03:44,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=691, PETRI_PLACES=128, PETRI_TRANSITIONS=110} [2024-10-12 00:03:44,161 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 39 predicate places. [2024-10-12 00:03:44,161 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 110 transitions, 691 flow [2024-10-12 00:03:44,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 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) [2024-10-12 00:03:44,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:44,162 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:44,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-12 00:03:44,162 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:44,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:44,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1171459115, now seen corresponding path program 1 times [2024-10-12 00:03:44,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:44,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177849028] [2024-10-12 00:03:44,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:44,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:44,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:44,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177849028] [2024-10-12 00:03:44,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177849028] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:44,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:44,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:03:44,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669691652] [2024-10-12 00:03:44,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:44,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 00:03:44,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:44,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 00:03:44,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 00:03:44,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2024-10-12 00:03:44,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 110 transitions, 691 flow. Second operand has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 7 states have internal predecessors, (365), 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) [2024-10-12 00:03:44,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:44,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2024-10-12 00:03:44,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:47,195 INFO L124 PetriNetUnfolderBase]: 14645/27221 cut-off events. [2024-10-12 00:03:47,195 INFO L125 PetriNetUnfolderBase]: For 93376/96343 co-relation queries the response was YES. [2024-10-12 00:03:47,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86021 conditions, 27221 events. 14645/27221 cut-off events. For 93376/96343 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 243788 event pairs, 786 based on Foata normal form. 2552/28834 useless extension candidates. Maximal degree in co-relation 83586. Up to 11612 conditions per place. [2024-10-12 00:03:47,608 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 216 selfloop transitions, 16 changer transitions 0/265 dead transitions. [2024-10-12 00:03:47,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 265 transitions, 2461 flow [2024-10-12 00:03:47,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:03:47,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:03:47,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 458 transitions. [2024-10-12 00:03:47,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6815476190476191 [2024-10-12 00:03:47,610 INFO L175 Difference]: Start difference. First operand has 128 places, 110 transitions, 691 flow. Second operand 7 states and 458 transitions. [2024-10-12 00:03:47,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 265 transitions, 2461 flow [2024-10-12 00:03:48,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 265 transitions, 2439 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:03:48,015 INFO L231 Difference]: Finished difference. Result has 130 places, 109 transitions, 699 flow [2024-10-12 00:03:48,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=699, PETRI_PLACES=130, PETRI_TRANSITIONS=109} [2024-10-12 00:03:48,016 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 41 predicate places. [2024-10-12 00:03:48,016 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 109 transitions, 699 flow [2024-10-12 00:03:48,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 7 states have internal predecessors, (365), 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) [2024-10-12 00:03:48,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:48,017 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:48,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-12 00:03:48,017 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:48,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:48,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1661355095, now seen corresponding path program 1 times [2024-10-12 00:03:48,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:48,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37399017] [2024-10-12 00:03:48,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:48,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:48,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:48,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37399017] [2024-10-12 00:03:48,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37399017] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:48,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:48,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:48,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003810757] [2024-10-12 00:03:48,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:48,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:48,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:48,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:48,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:48,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2024-10-12 00:03:48,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 109 transitions, 699 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) [2024-10-12 00:03:48,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:48,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2024-10-12 00:03:48,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:50,079 INFO L124 PetriNetUnfolderBase]: 9053/21545 cut-off events. [2024-10-12 00:03:50,079 INFO L125 PetriNetUnfolderBase]: For 76939/78547 co-relation queries the response was YES. [2024-10-12 00:03:50,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63093 conditions, 21545 events. 9053/21545 cut-off events. For 76939/78547 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 222505 event pairs, 2362 based on Foata normal form. 1546/22064 useless extension candidates. Maximal degree in co-relation 60886. Up to 8085 conditions per place. [2024-10-12 00:03:50,267 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 99 selfloop transitions, 11 changer transitions 0/147 dead transitions. [2024-10-12 00:03:50,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 147 transitions, 1238 flow [2024-10-12 00:03:50,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:50,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2024-10-12 00:03:50,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-10-12 00:03:50,268 INFO L175 Difference]: Start difference. First operand has 130 places, 109 transitions, 699 flow. Second operand 4 states and 276 transitions. [2024-10-12 00:03:50,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 147 transitions, 1238 flow [2024-10-12 00:03:50,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 147 transitions, 1211 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:03:50,688 INFO L231 Difference]: Finished difference. Result has 127 places, 108 transitions, 686 flow [2024-10-12 00:03:50,688 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=686, PETRI_PLACES=127, PETRI_TRANSITIONS=108} [2024-10-12 00:03:50,689 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 38 predicate places. [2024-10-12 00:03:50,689 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 108 transitions, 686 flow [2024-10-12 00:03:50,689 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) [2024-10-12 00:03:50,689 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:50,689 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:50,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-12 00:03:50,690 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:50,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:50,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1955493359, now seen corresponding path program 1 times [2024-10-12 00:03:50,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:50,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808128082] [2024-10-12 00:03:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:50,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:50,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:50,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808128082] [2024-10-12 00:03:50,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808128082] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:50,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:50,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 00:03:50,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440911364] [2024-10-12 00:03:50,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:50,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 00:03:50,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:50,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 00:03:50,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-12 00:03:50,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-10-12 00:03:50,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 108 transitions, 686 flow. Second operand has 9 states, 9 states have (on average 45.55555555555556) internal successors, (410), 9 states have internal predecessors, (410), 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) [2024-10-12 00:03:50,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:50,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-10-12 00:03:50,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:53,674 INFO L124 PetriNetUnfolderBase]: 13247/25025 cut-off events. [2024-10-12 00:03:53,674 INFO L125 PetriNetUnfolderBase]: For 95516/98155 co-relation queries the response was YES. [2024-10-12 00:03:53,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79482 conditions, 25025 events. 13247/25025 cut-off events. For 95516/98155 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 224352 event pairs, 786 based on Foata normal form. 3195/27297 useless extension candidates. Maximal degree in co-relation 77117. Up to 5523 conditions per place. [2024-10-12 00:03:53,870 INFO L140 encePairwiseOnDemand]: 84/96 looper letters, 288 selfloop transitions, 22 changer transitions 0/342 dead transitions. [2024-10-12 00:03:53,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 342 transitions, 3268 flow [2024-10-12 00:03:53,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 00:03:53,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-12 00:03:53,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 534 transitions. [2024-10-12 00:03:53,873 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6180555555555556 [2024-10-12 00:03:53,873 INFO L175 Difference]: Start difference. First operand has 127 places, 108 transitions, 686 flow. Second operand 9 states and 534 transitions. [2024-10-12 00:03:53,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 342 transitions, 3268 flow [2024-10-12 00:03:54,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 342 transitions, 3246 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:03:54,412 INFO L231 Difference]: Finished difference. Result has 132 places, 108 transitions, 716 flow [2024-10-12 00:03:54,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=716, PETRI_PLACES=132, PETRI_TRANSITIONS=108} [2024-10-12 00:03:54,413 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 43 predicate places. [2024-10-12 00:03:54,413 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 108 transitions, 716 flow [2024-10-12 00:03:54,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 45.55555555555556) internal successors, (410), 9 states have internal predecessors, (410), 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) [2024-10-12 00:03:54,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:54,414 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:54,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-12 00:03:54,414 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:54,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:54,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1003443739, now seen corresponding path program 1 times [2024-10-12 00:03:54,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:54,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709012107] [2024-10-12 00:03:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:54,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:54,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:54,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:54,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709012107] [2024-10-12 00:03:54,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709012107] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:54,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:54,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:54,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3774807] [2024-10-12 00:03:54,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:54,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:54,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:54,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:54,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:54,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-12 00:03:54,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 108 transitions, 716 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2024-10-12 00:03:54,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:54,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-12 00:03:54,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:56,686 INFO L124 PetriNetUnfolderBase]: 10784/22859 cut-off events. [2024-10-12 00:03:56,686 INFO L125 PetriNetUnfolderBase]: For 91610/93566 co-relation queries the response was YES. [2024-10-12 00:03:56,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74156 conditions, 22859 events. 10784/22859 cut-off events. For 91610/93566 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 221337 event pairs, 4332 based on Foata normal form. 1878/24468 useless extension candidates. Maximal degree in co-relation 71824. Up to 9151 conditions per place. [2024-10-12 00:03:56,890 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 143 selfloop transitions, 9 changer transitions 0/186 dead transitions. [2024-10-12 00:03:56,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 186 transitions, 1667 flow [2024-10-12 00:03:56,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:56,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:56,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2024-10-12 00:03:56,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7526041666666666 [2024-10-12 00:03:56,892 INFO L175 Difference]: Start difference. First operand has 132 places, 108 transitions, 716 flow. Second operand 4 states and 289 transitions. [2024-10-12 00:03:56,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 186 transitions, 1667 flow [2024-10-12 00:03:57,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 186 transitions, 1623 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-12 00:03:57,316 INFO L231 Difference]: Finished difference. Result has 127 places, 107 transitions, 679 flow [2024-10-12 00:03:57,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=679, PETRI_PLACES=127, PETRI_TRANSITIONS=107} [2024-10-12 00:03:57,316 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 38 predicate places. [2024-10-12 00:03:57,317 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 107 transitions, 679 flow [2024-10-12 00:03:57,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2024-10-12 00:03:57,317 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:57,317 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:57,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-12 00:03:57,317 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:03:57,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:57,318 INFO L85 PathProgramCache]: Analyzing trace with hash -490751145, now seen corresponding path program 1 times [2024-10-12 00:03:57,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:57,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450689710] [2024-10-12 00:03:57,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:57,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:57,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:57,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:57,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450689710] [2024-10-12 00:03:57,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450689710] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:57,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:57,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:57,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417918403] [2024-10-12 00:03:57,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:57,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:57,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:57,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:57,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:57,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2024-10-12 00:03:57,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 107 transitions, 679 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) [2024-10-12 00:03:57,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:57,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2024-10-12 00:03:57,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:04:01,767 INFO L124 PetriNetUnfolderBase]: 18272/40809 cut-off events. [2024-10-12 00:04:01,767 INFO L125 PetriNetUnfolderBase]: For 142611/146230 co-relation queries the response was YES. [2024-10-12 00:04:02,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127164 conditions, 40809 events. 18272/40809 cut-off events. For 142611/146230 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 432243 event pairs, 7090 based on Foata normal form. 3245/43843 useless extension candidates. Maximal degree in co-relation 124164. Up to 14674 conditions per place. [2024-10-12 00:04:02,189 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 166 selfloop transitions, 10 changer transitions 0/211 dead transitions. [2024-10-12 00:04:02,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 211 transitions, 1889 flow [2024-10-12 00:04:02,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:04:02,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:04:02,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2024-10-12 00:04:02,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8203125 [2024-10-12 00:04:02,191 INFO L175 Difference]: Start difference. First operand has 127 places, 107 transitions, 679 flow. Second operand 4 states and 315 transitions. [2024-10-12 00:04:02,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 211 transitions, 1889 flow [2024-10-12 00:04:03,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 211 transitions, 1864 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:04:03,011 INFO L231 Difference]: Finished difference. Result has 130 places, 116 transitions, 799 flow [2024-10-12 00:04:03,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=799, PETRI_PLACES=130, PETRI_TRANSITIONS=116} [2024-10-12 00:04:03,012 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 41 predicate places. [2024-10-12 00:04:03,012 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 116 transitions, 799 flow [2024-10-12 00:04:03,013 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) [2024-10-12 00:04:03,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:04:03,013 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:04:03,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-10-12 00:04:03,013 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:04:03,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:03,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1922004360, now seen corresponding path program 1 times [2024-10-12 00:04:03,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:03,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875376088] [2024-10-12 00:04:03,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:03,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:03,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:03,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:03,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875376088] [2024-10-12 00:04:03,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875376088] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:04:03,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:04:03,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:04:03,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769789155] [2024-10-12 00:04:03,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:04:03,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:04:03,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:03,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:04:03,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:04:03,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2024-10-12 00:04:03,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 116 transitions, 799 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2024-10-12 00:04:03,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:03,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2024-10-12 00:04:03,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:04:08,411 INFO L124 PetriNetUnfolderBase]: 24826/46794 cut-off events. [2024-10-12 00:04:08,411 INFO L125 PetriNetUnfolderBase]: For 186459/190839 co-relation queries the response was YES. [2024-10-12 00:04:08,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155626 conditions, 46794 events. 24826/46794 cut-off events. For 186459/190839 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 442059 event pairs, 9436 based on Foata normal form. 4736/51182 useless extension candidates. Maximal degree in co-relation 152424. Up to 20094 conditions per place. [2024-10-12 00:04:08,875 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 226 selfloop transitions, 15 changer transitions 0/273 dead transitions. [2024-10-12 00:04:08,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 273 transitions, 2605 flow [2024-10-12 00:04:08,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:04:08,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:04:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 424 transitions. [2024-10-12 00:04:08,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2024-10-12 00:04:08,877 INFO L175 Difference]: Start difference. First operand has 130 places, 116 transitions, 799 flow. Second operand 6 states and 424 transitions. [2024-10-12 00:04:08,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 273 transitions, 2605 flow [2024-10-12 00:04:09,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 273 transitions, 2576 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-12 00:04:09,666 INFO L231 Difference]: Finished difference. Result has 134 places, 117 transitions, 830 flow [2024-10-12 00:04:09,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=830, PETRI_PLACES=134, PETRI_TRANSITIONS=117} [2024-10-12 00:04:09,667 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 45 predicate places. [2024-10-12 00:04:09,667 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 117 transitions, 830 flow [2024-10-12 00:04:09,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2024-10-12 00:04:09,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:04:09,667 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:04:09,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-12 00:04:09,668 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:04:09,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1111849536, now seen corresponding path program 1 times [2024-10-12 00:04:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:09,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136045290] [2024-10-12 00:04:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:09,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:09,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:09,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136045290] [2024-10-12 00:04:09,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136045290] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:04:09,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:04:09,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:04:09,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309044098] [2024-10-12 00:04:09,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:04:09,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:04:09,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:09,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:04:09,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:04:10,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2024-10-12 00:04:10,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 117 transitions, 830 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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) [2024-10-12 00:04:10,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:10,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2024-10-12 00:04:10,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:04:15,403 INFO L124 PetriNetUnfolderBase]: 24330/46983 cut-off events. [2024-10-12 00:04:15,403 INFO L125 PetriNetUnfolderBase]: For 233802/238475 co-relation queries the response was YES. [2024-10-12 00:04:15,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163161 conditions, 46983 events. 24330/46983 cut-off events. For 233802/238475 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 455268 event pairs, 9060 based on Foata normal form. 4436/50919 useless extension candidates. Maximal degree in co-relation 159746. Up to 19398 conditions per place. [2024-10-12 00:04:15,853 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 156 selfloop transitions, 10 changer transitions 0/200 dead transitions. [2024-10-12 00:04:15,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 200 transitions, 1922 flow [2024-10-12 00:04:15,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:04:15,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:04:15,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 287 transitions. [2024-10-12 00:04:15,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7473958333333334 [2024-10-12 00:04:15,854 INFO L175 Difference]: Start difference. First operand has 134 places, 117 transitions, 830 flow. Second operand 4 states and 287 transitions. [2024-10-12 00:04:15,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 200 transitions, 1922 flow [2024-10-12 00:04:16,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 200 transitions, 1800 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-10-12 00:04:16,802 INFO L231 Difference]: Finished difference. Result has 132 places, 120 transitions, 863 flow [2024-10-12 00:04:16,803 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=863, PETRI_PLACES=132, PETRI_TRANSITIONS=120} [2024-10-12 00:04:16,803 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 43 predicate places. [2024-10-12 00:04:16,803 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 120 transitions, 863 flow [2024-10-12 00:04:16,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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) [2024-10-12 00:04:16,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:04:16,803 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-12 00:04:16,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-10-12 00:04:16,804 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:04:16,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:16,804 INFO L85 PathProgramCache]: Analyzing trace with hash 65941779, now seen corresponding path program 1 times [2024-10-12 00:04:16,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:16,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48971356] [2024-10-12 00:04:16,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:16,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:16,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:16,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48971356] [2024-10-12 00:04:16,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48971356] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:04:16,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842538493] [2024-10-12 00:04:16,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:16,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:04:16,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:04:16,885 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:04:16,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:04:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:16,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:04:16,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:04:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:17,080 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:04:17,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842538493] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:04:17,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:04:17,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-12 00:04:17,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113843742] [2024-10-12 00:04:17,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:04:17,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:04:17,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:17,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:04:17,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:04:17,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2024-10-12 00:04:17,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 120 transitions, 863 flow. Second operand has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 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) [2024-10-12 00:04:17,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:17,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2024-10-12 00:04:17,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand