./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/parallel-bakery-3.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/parallel-bakery-3.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 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:03:26,264 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:03:26,306 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:03:26,310 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:03:26,310 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:03:26,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:03:26,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:03:26,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:03:26,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:03:26,327 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:03:26,327 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:03:26,328 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:03:26,328 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:03:26,328 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:03:26,329 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:03:26,329 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:03:26,329 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:03:26,330 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:03:26,330 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:03:26,330 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:03:26,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:03:26,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:03:26,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:03:26,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:03:26,332 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:03:26,332 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:03:26,333 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:03:26,333 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:03:26,333 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:03:26,333 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:03:26,334 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:03:26,334 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:03:26,334 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:03:26,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:03:26,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:03:26,335 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:03:26,335 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:03:26,335 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:03:26,336 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:03:26,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:03:26,336 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:03:26,336 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:03:26,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:03:26,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:03:26,337 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 [2024-10-12 00:03:26,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:03:26,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:03:26,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:03:26,568 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:03:26,568 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:03:26,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2024-10-12 00:03:27,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:03:28,100 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:03:28,100 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2024-10-12 00:03:28,112 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/891ef0c41/c2c97e0d6a2c4279b5a4076eeb2e99ef/FLAG666190266 [2024-10-12 00:03:28,125 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/891ef0c41/c2c97e0d6a2c4279b5a4076eeb2e99ef [2024-10-12 00:03:28,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:03:28,128 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:03:28,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:03:28,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:03:28,134 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:03:28,135 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:03:28" (1/1) ... [2024-10-12 00:03:28,137 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb47336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:28, skipping insertion in model container [2024-10-12 00:03:28,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:03:28" (1/1) ... [2024-10-12 00:03:28,161 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:03:28,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:03:28,378 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:03:28,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:03:28,411 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:03:28,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:28 WrapperNode [2024-10-12 00:03:28,411 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:03:28,412 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:03:28,412 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:03:28,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:03:28,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:28" (1/1) ... [2024-10-12 00:03:28,426 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:28" (1/1) ... [2024-10-12 00:03:28,447 INFO L138 Inliner]: procedures = 21, calls = 96, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 266 [2024-10-12 00:03:28,451 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:03:28,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:03:28,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:03:28,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:03:28,461 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:28" (1/1) ... [2024-10-12 00:03:28,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:28" (1/1) ... [2024-10-12 00:03:28,464 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:28" (1/1) ... [2024-10-12 00:03:28,482 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 00:03:28,484 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:28" (1/1) ... [2024-10-12 00:03:28,484 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:28" (1/1) ... [2024-10-12 00:03:28,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:28" (1/1) ... [2024-10-12 00:03:28,493 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:28" (1/1) ... [2024-10-12 00:03:28,494 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:28" (1/1) ... [2024-10-12 00:03:28,495 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:28" (1/1) ... [2024-10-12 00:03:28,497 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:03:28,499 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:03:28,500 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:03:28,500 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:03:28,501 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:28" (1/1) ... [2024-10-12 00:03:28,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:03:28,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:03:28,527 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 00:03:28,530 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 00:03:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:03:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:03:28,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:03:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:03:28,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:03:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:03:28,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:03:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:03:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:03:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:03:28,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:03:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:03:28,563 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 00:03:28,688 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:03:28,690 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:03:28,925 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:03:28,925 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:03:29,202 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:03:29,205 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-12 00:03:29,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:03:29 BoogieIcfgContainer [2024-10-12 00:03:29,205 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:03:29,207 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:03:29,208 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:03:29,210 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:03:29,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:03:28" (1/3) ... [2024-10-12 00:03:29,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de9058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:03:29, skipping insertion in model container [2024-10-12 00:03:29,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:28" (2/3) ... [2024-10-12 00:03:29,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de9058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:03:29, skipping insertion in model container [2024-10-12 00:03:29,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:03:29" (3/3) ... [2024-10-12 00:03:29,213 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2024-10-12 00:03:29,228 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:03:29,228 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-12 00:03:29,228 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:03:29,278 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-12 00:03:29,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 68 transitions, 157 flow [2024-10-12 00:03:29,343 INFO L124 PetriNetUnfolderBase]: 0/65 cut-off events. [2024-10-12 00:03:29,343 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-12 00:03:29,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 65 events. 0/65 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 150 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-10-12 00:03:29,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 68 transitions, 157 flow [2024-10-12 00:03:29,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 63 transitions, 141 flow [2024-10-12 00:03:29,357 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:03:29,363 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;@6239a3ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:03:29,363 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-10-12 00:03:29,367 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:03:29,368 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2024-10-12 00:03:29,368 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:03:29,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:29,368 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:29,369 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:03:29,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:29,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1967803496, now seen corresponding path program 1 times [2024-10-12 00:03:29,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:29,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667785900] [2024-10-12 00:03:29,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:29,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:29,741 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 00:03:29,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:29,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667785900] [2024-10-12 00:03:29,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667785900] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:29,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:29,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:29,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790756126] [2024-10-12 00:03:29,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:29,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:03:29,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:29,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:03:29,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:03:29,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 68 [2024-10-12 00:03:29,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 141 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 00:03:29,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:29,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 68 [2024-10-12 00:03:29,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:31,026 INFO L124 PetriNetUnfolderBase]: 12673/19318 cut-off events. [2024-10-12 00:03:31,026 INFO L125 PetriNetUnfolderBase]: For 847/847 co-relation queries the response was YES. [2024-10-12 00:03:31,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38317 conditions, 19318 events. 12673/19318 cut-off events. For 847/847 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 138269 event pairs, 857 based on Foata normal form. 0/14921 useless extension candidates. Maximal degree in co-relation 36759. Up to 14004 conditions per place. [2024-10-12 00:03:31,135 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 87 selfloop transitions, 6 changer transitions 1/109 dead transitions. [2024-10-12 00:03:31,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 109 transitions, 436 flow [2024-10-12 00:03:31,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:03:31,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:03:31,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-10-12 00:03:31,146 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-12 00:03:31,147 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 141 flow. Second operand 5 states and 187 transitions. [2024-10-12 00:03:31,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 109 transitions, 436 flow [2024-10-12 00:03:31,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 109 transitions, 418 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:03:31,158 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 160 flow [2024-10-12 00:03:31,162 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2024-10-12 00:03:31,164 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2024-10-12 00:03:31,165 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 160 flow [2024-10-12 00:03:31,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 00:03:31,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:31,165 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:31,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:03:31,166 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:03:31,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:31,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1967803497, now seen corresponding path program 1 times [2024-10-12 00:03:31,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:31,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448703968] [2024-10-12 00:03:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:31,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:31,373 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 00:03:31,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:31,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448703968] [2024-10-12 00:03:31,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448703968] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:31,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:31,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:31,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972138678] [2024-10-12 00:03:31,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:31,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:03:31,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:31,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:03:31,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:03:31,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-10-12 00:03:31,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 00:03:31,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:31,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-10-12 00:03:31,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:33,017 INFO L124 PetriNetUnfolderBase]: 14122/21679 cut-off events. [2024-10-12 00:03:33,017 INFO L125 PetriNetUnfolderBase]: For 782/782 co-relation queries the response was YES. [2024-10-12 00:03:33,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43516 conditions, 21679 events. 14122/21679 cut-off events. For 782/782 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 153428 event pairs, 5529 based on Foata normal form. 0/16893 useless extension candidates. Maximal degree in co-relation 35009. Up to 14452 conditions per place. [2024-10-12 00:03:33,151 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 97 selfloop transitions, 13 changer transitions 1/130 dead transitions. [2024-10-12 00:03:33,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 130 transitions, 525 flow [2024-10-12 00:03:33,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:03:33,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:03:33,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 215 transitions. [2024-10-12 00:03:33,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6323529411764706 [2024-10-12 00:03:33,153 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 160 flow. Second operand 5 states and 215 transitions. [2024-10-12 00:03:33,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 130 transitions, 525 flow [2024-10-12 00:03:33,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 130 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:03:33,182 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 258 flow [2024-10-12 00:03:33,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2024-10-12 00:03:33,183 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2024-10-12 00:03:33,183 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 258 flow [2024-10-12 00:03:33,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 00:03:33,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:33,184 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:33,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 00:03:33,184 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:03:33,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:33,185 INFO L85 PathProgramCache]: Analyzing trace with hash 308478119, now seen corresponding path program 1 times [2024-10-12 00:03:33,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:33,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437704692] [2024-10-12 00:03:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:33,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:33,353 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 00:03:33,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:33,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437704692] [2024-10-12 00:03:33,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437704692] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:33,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:33,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:33,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504334828] [2024-10-12 00:03:33,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:33,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:03:33,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:33,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:03:33,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:03:33,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-10-12 00:03:33,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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 00:03:33,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:33,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-10-12 00:03:33,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:34,859 INFO L124 PetriNetUnfolderBase]: 13294/20390 cut-off events. [2024-10-12 00:03:34,859 INFO L125 PetriNetUnfolderBase]: For 7263/7855 co-relation queries the response was YES. [2024-10-12 00:03:34,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49420 conditions, 20390 events. 13294/20390 cut-off events. For 7263/7855 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 141808 event pairs, 1333 based on Foata normal form. 290/16940 useless extension candidates. Maximal degree in co-relation 25665. Up to 14504 conditions per place. [2024-10-12 00:03:34,949 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 94 selfloop transitions, 7 changer transitions 1/121 dead transitions. [2024-10-12 00:03:34,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 121 transitions, 594 flow [2024-10-12 00:03:34,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:03:34,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:03:34,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 186 transitions. [2024-10-12 00:03:34,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5470588235294118 [2024-10-12 00:03:34,951 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 258 flow. Second operand 5 states and 186 transitions. [2024-10-12 00:03:34,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 121 transitions, 594 flow [2024-10-12 00:03:34,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 121 transitions, 594 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:03:34,955 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 268 flow [2024-10-12 00:03:34,956 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-10-12 00:03:34,956 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 8 predicate places. [2024-10-12 00:03:34,956 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 268 flow [2024-10-12 00:03:34,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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 00:03:34,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:34,957 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:34,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 00:03:34,957 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:03:34,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:34,958 INFO L85 PathProgramCache]: Analyzing trace with hash -485923992, now seen corresponding path program 1 times [2024-10-12 00:03:34,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:34,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170436581] [2024-10-12 00:03:34,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:34,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:35,226 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 00:03:35,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:35,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170436581] [2024-10-12 00:03:35,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170436581] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:35,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:35,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:03:35,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077107000] [2024-10-12 00:03:35,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:35,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:03:35,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:35,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:03:35,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:03:35,265 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 68 [2024-10-12 00:03:35,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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 00:03:35,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:35,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 68 [2024-10-12 00:03:35,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:37,611 INFO L124 PetriNetUnfolderBase]: 25228/38570 cut-off events. [2024-10-12 00:03:37,614 INFO L125 PetriNetUnfolderBase]: For 17499/18469 co-relation queries the response was YES. [2024-10-12 00:03:37,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92557 conditions, 38570 events. 25228/38570 cut-off events. For 17499/18469 co-relation queries the response was YES. Maximal size of possible extension queue 1208. Compared 287007 event pairs, 1643 based on Foata normal form. 476/32324 useless extension candidates. Maximal degree in co-relation 75201. Up to 17867 conditions per place. [2024-10-12 00:03:38,051 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 135 selfloop transitions, 26 changer transitions 0/180 dead transitions. [2024-10-12 00:03:38,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 180 transitions, 940 flow [2024-10-12 00:03:38,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:03:38,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:03:38,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 261 transitions. [2024-10-12 00:03:38,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6397058823529411 [2024-10-12 00:03:38,054 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 268 flow. Second operand 6 states and 261 transitions. [2024-10-12 00:03:38,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 180 transitions, 940 flow [2024-10-12 00:03:38,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 180 transitions, 910 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:03:38,101 INFO L231 Difference]: Finished difference. Result has 86 places, 98 transitions, 510 flow [2024-10-12 00:03:38,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=510, PETRI_PLACES=86, PETRI_TRANSITIONS=98} [2024-10-12 00:03:38,103 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 13 predicate places. [2024-10-12 00:03:38,104 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 98 transitions, 510 flow [2024-10-12 00:03:38,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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 00:03:38,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:38,105 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:38,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:03:38,105 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:03:38,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:38,106 INFO L85 PathProgramCache]: Analyzing trace with hash 108455670, now seen corresponding path program 1 times [2024-10-12 00:03:38,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:38,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769200180] [2024-10-12 00:03:38,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:38,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:38,303 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 00:03:38,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:38,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769200180] [2024-10-12 00:03:38,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769200180] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:38,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:38,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:03:38,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574591646] [2024-10-12 00:03:38,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:38,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:03:38,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:38,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:03:38,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:03:38,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 68 [2024-10-12 00:03:38,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 98 transitions, 510 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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 00:03:38,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:38,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 68 [2024-10-12 00:03:38,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:42,226 INFO L124 PetriNetUnfolderBase]: 37010/56570 cut-off events. [2024-10-12 00:03:42,227 INFO L125 PetriNetUnfolderBase]: For 57901/59081 co-relation queries the response was YES. [2024-10-12 00:03:42,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149286 conditions, 56570 events. 37010/56570 cut-off events. For 57901/59081 co-relation queries the response was YES. Maximal size of possible extension queue 1845. Compared 444160 event pairs, 13217 based on Foata normal form. 1051/48700 useless extension candidates. Maximal degree in co-relation 111627. Up to 29963 conditions per place. [2024-10-12 00:03:42,533 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 149 selfloop transitions, 32 changer transitions 0/202 dead transitions. [2024-10-12 00:03:42,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 202 transitions, 1343 flow [2024-10-12 00:03:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:03:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:03:42,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 245 transitions. [2024-10-12 00:03:42,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6004901960784313 [2024-10-12 00:03:42,538 INFO L175 Difference]: Start difference. First operand has 86 places, 98 transitions, 510 flow. Second operand 6 states and 245 transitions. [2024-10-12 00:03:42,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 202 transitions, 1343 flow [2024-10-12 00:03:42,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 202 transitions, 1331 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-12 00:03:42,612 INFO L231 Difference]: Finished difference. Result has 96 places, 122 transitions, 827 flow [2024-10-12 00:03:42,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=827, PETRI_PLACES=96, PETRI_TRANSITIONS=122} [2024-10-12 00:03:42,612 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 23 predicate places. [2024-10-12 00:03:42,614 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 122 transitions, 827 flow [2024-10-12 00:03:42,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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 00:03:42,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:42,614 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:42,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:03:42,614 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:03:42,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:42,615 INFO L85 PathProgramCache]: Analyzing trace with hash 615483045, now seen corresponding path program 1 times [2024-10-12 00:03:42,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:42,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138118003] [2024-10-12 00:03:42,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:42,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:42,666 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 00:03:42,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:42,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138118003] [2024-10-12 00:03:42,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138118003] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:42,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:42,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:42,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578101481] [2024-10-12 00:03:42,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:42,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:42,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:42,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:42,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:42,677 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 68 [2024-10-12 00:03:42,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 122 transitions, 827 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 00:03:42,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:42,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 68 [2024-10-12 00:03:42,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:46,437 INFO L124 PetriNetUnfolderBase]: 29934/47860 cut-off events. [2024-10-12 00:03:46,438 INFO L125 PetriNetUnfolderBase]: For 99263/106205 co-relation queries the response was YES. [2024-10-12 00:03:46,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138218 conditions, 47860 events. 29934/47860 cut-off events. For 99263/106205 co-relation queries the response was YES. Maximal size of possible extension queue 1579. Compared 396324 event pairs, 11609 based on Foata normal form. 1843/42592 useless extension candidates. Maximal degree in co-relation 123587. Up to 17136 conditions per place. [2024-10-12 00:03:46,868 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 164 selfloop transitions, 7 changer transitions 0/227 dead transitions. [2024-10-12 00:03:46,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 227 transitions, 1692 flow [2024-10-12 00:03:46,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:03:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:03:46,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 244 transitions. [2024-10-12 00:03:46,870 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7176470588235294 [2024-10-12 00:03:46,870 INFO L175 Difference]: Start difference. First operand has 96 places, 122 transitions, 827 flow. Second operand 5 states and 244 transitions. [2024-10-12 00:03:46,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 227 transitions, 1692 flow [2024-10-12 00:03:47,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 227 transitions, 1674 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-10-12 00:03:47,056 INFO L231 Difference]: Finished difference. Result has 103 places, 128 transitions, 870 flow [2024-10-12 00:03:47,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=870, PETRI_PLACES=103, PETRI_TRANSITIONS=128} [2024-10-12 00:03:47,057 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 30 predicate places. [2024-10-12 00:03:47,057 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 128 transitions, 870 flow [2024-10-12 00:03:47,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 00:03:47,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:47,057 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:47,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:03:47,058 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:03:47,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:47,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1426368309, now seen corresponding path program 1 times [2024-10-12 00:03:47,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:47,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283545368] [2024-10-12 00:03:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:47,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:47,206 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 00:03:47,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:47,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283545368] [2024-10-12 00:03:47,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283545368] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:47,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:47,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:03:47,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87729673] [2024-10-12 00:03:47,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:47,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:03:47,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:47,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:03:47,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:03:47,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 68 [2024-10-12 00:03:47,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 128 transitions, 870 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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 00:03:47,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:47,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 68 [2024-10-12 00:03:47,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:53,286 INFO L124 PetriNetUnfolderBase]: 43678/67160 cut-off events. [2024-10-12 00:03:53,287 INFO L125 PetriNetUnfolderBase]: For 121199/124981 co-relation queries the response was YES. [2024-10-12 00:03:53,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205797 conditions, 67160 events. 43678/67160 cut-off events. For 121199/124981 co-relation queries the response was YES. Maximal size of possible extension queue 2102. Compared 537590 event pairs, 7955 based on Foata normal form. 2881/65280 useless extension candidates. Maximal degree in co-relation 172957. Up to 33824 conditions per place. [2024-10-12 00:03:53,935 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 164 selfloop transitions, 41 changer transitions 0/237 dead transitions. [2024-10-12 00:03:53,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 237 transitions, 1846 flow [2024-10-12 00:03:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:03:53,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:03:53,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 249 transitions. [2024-10-12 00:03:53,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6102941176470589 [2024-10-12 00:03:53,937 INFO L175 Difference]: Start difference. First operand has 103 places, 128 transitions, 870 flow. Second operand 6 states and 249 transitions. [2024-10-12 00:03:53,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 237 transitions, 1846 flow [2024-10-12 00:03:54,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 237 transitions, 1840 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:03:54,368 INFO L231 Difference]: Finished difference. Result has 110 places, 145 transitions, 1199 flow [2024-10-12 00:03:54,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1199, PETRI_PLACES=110, PETRI_TRANSITIONS=145} [2024-10-12 00:03:54,369 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 37 predicate places. [2024-10-12 00:03:54,369 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 145 transitions, 1199 flow [2024-10-12 00:03:54,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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 00:03:54,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:54,370 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:54,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 00:03:54,370 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:03:54,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:54,370 INFO L85 PathProgramCache]: Analyzing trace with hash 368846617, now seen corresponding path program 1 times [2024-10-12 00:03:54,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:54,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372925611] [2024-10-12 00:03:54,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:54,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:54,839 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 00:03:54,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:54,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372925611] [2024-10-12 00:03:54,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372925611] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:54,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:54,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:03:54,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030782753] [2024-10-12 00:03:54,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:54,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:03:54,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:54,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:03:54,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:03:54,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-10-12 00:03:54,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 145 transitions, 1199 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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 00:03:54,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:54,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-10-12 00:03:54,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:04:02,831 INFO L124 PetriNetUnfolderBase]: 54636/84322 cut-off events. [2024-10-12 00:04:02,831 INFO L125 PetriNetUnfolderBase]: For 250196/254817 co-relation queries the response was YES. [2024-10-12 00:04:03,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267674 conditions, 84322 events. 54636/84322 cut-off events. For 250196/254817 co-relation queries the response was YES. Maximal size of possible extension queue 2675. Compared 698784 event pairs, 20212 based on Foata normal form. 3784/82572 useless extension candidates. Maximal degree in co-relation 204375. Up to 49838 conditions per place. [2024-10-12 00:04:03,787 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 177 selfloop transitions, 35 changer transitions 0/252 dead transitions. [2024-10-12 00:04:03,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 252 transitions, 2242 flow [2024-10-12 00:04:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:04:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:04:03,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 248 transitions. [2024-10-12 00:04:03,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-10-12 00:04:03,789 INFO L175 Difference]: Start difference. First operand has 110 places, 145 transitions, 1199 flow. Second operand 6 states and 248 transitions. [2024-10-12 00:04:03,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 252 transitions, 2242 flow [2024-10-12 00:04:04,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 252 transitions, 2223 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-12 00:04:04,875 INFO L231 Difference]: Finished difference. Result has 117 places, 158 transitions, 1454 flow [2024-10-12 00:04:04,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1454, PETRI_PLACES=117, PETRI_TRANSITIONS=158} [2024-10-12 00:04:04,875 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 44 predicate places. [2024-10-12 00:04:04,876 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 158 transitions, 1454 flow [2024-10-12 00:04:04,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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 00:04:04,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:04:04,876 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:04:04,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 00:04:04,877 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:04:04,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:04,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1570279207, now seen corresponding path program 2 times [2024-10-12 00:04:04,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:04,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257076013] [2024-10-12 00:04:04,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:04,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:05,017 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 00:04:05,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:05,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257076013] [2024-10-12 00:04:05,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257076013] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:04:05,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:04:05,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:04:05,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194877359] [2024-10-12 00:04:05,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:04:05,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:04:05,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:05,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:04:05,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:04:05,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 68 [2024-10-12 00:04:05,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 158 transitions, 1454 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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 00:04:05,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:05,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 68 [2024-10-12 00:04:05,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:04:15,463 INFO L124 PetriNetUnfolderBase]: 66162/101611 cut-off events. [2024-10-12 00:04:15,463 INFO L125 PetriNetUnfolderBase]: For 325705/331104 co-relation queries the response was YES. [2024-10-12 00:04:16,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334838 conditions, 101611 events. 66162/101611 cut-off events. For 325705/331104 co-relation queries the response was YES. Maximal size of possible extension queue 3168. Compared 858539 event pairs, 18987 based on Foata normal form. 3970/99171 useless extension candidates. Maximal degree in co-relation 251894. Up to 52037 conditions per place. [2024-10-12 00:04:16,643 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 193 selfloop transitions, 62 changer transitions 0/292 dead transitions. [2024-10-12 00:04:16,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 292 transitions, 2933 flow [2024-10-12 00:04:16,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:04:16,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:04:16,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 249 transitions. [2024-10-12 00:04:16,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6102941176470589 [2024-10-12 00:04:16,649 INFO L175 Difference]: Start difference. First operand has 117 places, 158 transitions, 1454 flow. Second operand 6 states and 249 transitions. [2024-10-12 00:04:16,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 292 transitions, 2933 flow [2024-10-12 00:04:18,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 292 transitions, 2919 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-12 00:04:18,202 INFO L231 Difference]: Finished difference. Result has 126 places, 198 transitions, 2229 flow [2024-10-12 00:04:18,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2229, PETRI_PLACES=126, PETRI_TRANSITIONS=198} [2024-10-12 00:04:18,204 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 53 predicate places. [2024-10-12 00:04:18,204 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 198 transitions, 2229 flow [2024-10-12 00:04:18,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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 00:04:18,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:04:18,205 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:04:18,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 00:04:18,209 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:04:18,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:18,210 INFO L85 PathProgramCache]: Analyzing trace with hash 128730978, now seen corresponding path program 1 times [2024-10-12 00:04:18,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:18,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693277399] [2024-10-12 00:04:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:18,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:18,541 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 00:04:18,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:18,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693277399] [2024-10-12 00:04:18,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693277399] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:04:18,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:04:18,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:04:18,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676453857] [2024-10-12 00:04:18,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:04:18,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:04:18,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:18,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:04:18,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:04:18,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 68 [2024-10-12 00:04:18,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 198 transitions, 2229 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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 00:04:18,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:18,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 68 [2024-10-12 00:04:18,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand