./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/popl20-counter-determinism.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/popl20-counter-determinism.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 1dad5daa490be7069cef5ea8bf1cf3314a40a44a4796167c86226f70cfcf68a2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:05:36,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:05:36,680 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:05:36,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:05:36,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:05:36,728 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:05:36,729 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:05:36,730 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:05:36,730 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:05:36,731 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:05:36,731 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:05:36,732 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:05:36,733 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:05:36,735 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:05:36,736 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:05:36,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:05:36,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:05:36,737 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:05:36,738 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:05:36,738 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:05:36,742 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:05:36,743 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:05:36,743 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:05:36,744 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:05:36,744 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:05:36,744 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:05:36,744 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:05:36,745 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:05:36,745 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:05:36,745 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:05:36,746 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:05:36,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:05:36,747 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:05:36,747 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:05:36,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:05:36,748 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:05:36,748 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:05:36,748 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:05:36,749 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:05:36,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:05:36,749 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:05:36,750 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:05:36,750 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:05:36,750 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:05:36,751 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dad5daa490be7069cef5ea8bf1cf3314a40a44a4796167c86226f70cfcf68a2 [2024-10-12 00:05:37,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:05:37,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:05:37,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:05:37,099 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:05:37,099 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:05:37,101 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-10-12 00:05:38,784 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:05:38,989 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:05:38,990 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-10-12 00:05:39,000 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/2e8c65c5e/a258bff6bfa847e8beeaba6755292d36/FLAG6dd9a41e2 [2024-10-12 00:05:39,356 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/2e8c65c5e/a258bff6bfa847e8beeaba6755292d36 [2024-10-12 00:05:39,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:05:39,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:05:39,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:05:39,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:05:39,370 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:05:39,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:05:39" (1/1) ... [2024-10-12 00:05:39,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@749c5105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:39, skipping insertion in model container [2024-10-12 00:05:39,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:05:39" (1/1) ... [2024-10-12 00:05:39,403 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:05:39,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:05:39,656 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:05:39,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:05:39,712 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:05:39,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:39 WrapperNode [2024-10-12 00:05:39,713 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:05:39,714 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:05:39,714 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:05:39,714 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:05:39,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:39" (1/1) ... [2024-10-12 00:05:39,732 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:39" (1/1) ... [2024-10-12 00:05:39,767 INFO L138 Inliner]: procedures = 22, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 106 [2024-10-12 00:05:39,770 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:05:39,771 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:05:39,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:05:39,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:05:39,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:39" (1/1) ... [2024-10-12 00:05:39,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:39" (1/1) ... [2024-10-12 00:05:39,785 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:39" (1/1) ... [2024-10-12 00:05:39,812 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 00:05:39,812 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:39" (1/1) ... [2024-10-12 00:05:39,813 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:39" (1/1) ... [2024-10-12 00:05:39,818 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:39" (1/1) ... [2024-10-12 00:05:39,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:39" (1/1) ... [2024-10-12 00:05:39,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:39" (1/1) ... [2024-10-12 00:05:39,836 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:39" (1/1) ... [2024-10-12 00:05:39,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:05:39,840 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:05:39,840 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:05:39,840 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:05:39,841 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:39" (1/1) ... [2024-10-12 00:05:39,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:05:39,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:39,882 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 00:05:39,887 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 00:05:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:05:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:05:39,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:05:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:05:39,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:05:39,937 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:05:39,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:05:39,937 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-12 00:05:39,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-12 00:05:39,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:05:39,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:05:39,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:05:39,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:05:39,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:05:39,940 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 00:05:40,043 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:05:40,046 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:05:40,337 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:05:40,337 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:05:40,597 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:05:40,597 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-12 00:05:40,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:05:40 BoogieIcfgContainer [2024-10-12 00:05:40,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:05:40,601 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:05:40,601 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:05:40,604 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:05:40,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:05:39" (1/3) ... [2024-10-12 00:05:40,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ecafbc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:05:40, skipping insertion in model container [2024-10-12 00:05:40,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:39" (2/3) ... [2024-10-12 00:05:40,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ecafbc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:05:40, skipping insertion in model container [2024-10-12 00:05:40,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:05:40" (3/3) ... [2024-10-12 00:05:40,607 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2024-10-12 00:05:40,623 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:05:40,623 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-12 00:05:40,623 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:05:40,721 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-12 00:05:40,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 152 flow [2024-10-12 00:05:40,797 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-10-12 00:05:40,797 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-12 00:05:40,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 4/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 162 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-10-12 00:05:40,805 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 152 flow [2024-10-12 00:05:40,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 133 flow [2024-10-12 00:05:40,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:05:40,837 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;@225f8b66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:05:40,838 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-10-12 00:05:40,842 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:05:40,843 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-10-12 00:05:40,843 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:05:40,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:40,844 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-12 00:05:40,845 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:05:40,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:40,850 INFO L85 PathProgramCache]: Analyzing trace with hash 374658588, now seen corresponding path program 1 times [2024-10-12 00:05:40,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:40,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624827434] [2024-10-12 00:05:40,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:40,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:41,121 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 00:05:41,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:41,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624827434] [2024-10-12 00:05:41,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624827434] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:41,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:41,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:05:41,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33939349] [2024-10-12 00:05:41,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:41,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:05:41,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:41,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:05:41,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:05:41,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-12 00:05:41,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 00:05:41,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:41,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-12 00:05:41,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:43,010 INFO L124 PetriNetUnfolderBase]: 9115/14629 cut-off events. [2024-10-12 00:05:43,011 INFO L125 PetriNetUnfolderBase]: For 578/578 co-relation queries the response was YES. [2024-10-12 00:05:43,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27397 conditions, 14629 events. 9115/14629 cut-off events. For 578/578 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 106817 event pairs, 2507 based on Foata normal form. 249/11489 useless extension candidates. Maximal degree in co-relation 24815. Up to 9045 conditions per place. [2024-10-12 00:05:43,222 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 57 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-10-12 00:05:43,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 79 transitions, 315 flow [2024-10-12 00:05:43,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:05:43,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:05:43,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-10-12 00:05:43,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7473118279569892 [2024-10-12 00:05:43,239 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 133 flow. Second operand 3 states and 139 transitions. [2024-10-12 00:05:43,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 79 transitions, 315 flow [2024-10-12 00:05:43,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 79 transitions, 291 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-12 00:05:43,288 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 134 flow [2024-10-12 00:05:43,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2024-10-12 00:05:43,298 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -6 predicate places. [2024-10-12 00:05:43,298 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 134 flow [2024-10-12 00:05:43,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 00:05:43,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:43,299 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:43,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:05:43,300 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:05:43,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:43,301 INFO L85 PathProgramCache]: Analyzing trace with hash -730334977, now seen corresponding path program 1 times [2024-10-12 00:05:43,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:43,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776783547] [2024-10-12 00:05:43,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:43,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:43,397 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 00:05:43,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:43,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776783547] [2024-10-12 00:05:43,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776783547] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:43,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:43,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:05:43,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213141078] [2024-10-12 00:05:43,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:43,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:43,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:43,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:43,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:43,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-12 00:05:43,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 00:05:43,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:43,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-12 00:05:43,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:45,682 INFO L124 PetriNetUnfolderBase]: 15375/22549 cut-off events. [2024-10-12 00:05:45,682 INFO L125 PetriNetUnfolderBase]: For 1340/1340 co-relation queries the response was YES. [2024-10-12 00:05:45,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46517 conditions, 22549 events. 15375/22549 cut-off events. For 1340/1340 co-relation queries the response was YES. Maximal size of possible extension queue 1133. Compared 152985 event pairs, 8887 based on Foata normal form. 372/17767 useless extension candidates. Maximal degree in co-relation 20828. Up to 16077 conditions per place. [2024-10-12 00:05:45,908 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 83 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-10-12 00:05:45,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 104 transitions, 422 flow [2024-10-12 00:05:45,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:05:45,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:05:45,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2024-10-12 00:05:45,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6975806451612904 [2024-10-12 00:05:45,911 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 134 flow. Second operand 4 states and 173 transitions. [2024-10-12 00:05:45,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 104 transitions, 422 flow [2024-10-12 00:05:45,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 104 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:45,920 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 161 flow [2024-10-12 00:05:45,920 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-10-12 00:05:45,921 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -2 predicate places. [2024-10-12 00:05:45,922 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 161 flow [2024-10-12 00:05:45,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 00:05:45,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:45,922 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:45,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 00:05:45,924 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:05:45,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:45,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1307267655, now seen corresponding path program 1 times [2024-10-12 00:05:45,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:45,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257535928] [2024-10-12 00:05:45,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:45,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:46,000 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 00:05:46,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:46,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257535928] [2024-10-12 00:05:46,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257535928] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:46,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:46,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:05:46,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652501130] [2024-10-12 00:05:46,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:46,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:05:46,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:46,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:05:46,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:05:46,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-12 00:05:46,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 00:05:46,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:46,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-12 00:05:46,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:46,982 INFO L124 PetriNetUnfolderBase]: 8669/12745 cut-off events. [2024-10-12 00:05:46,983 INFO L125 PetriNetUnfolderBase]: For 2618/3543 co-relation queries the response was YES. [2024-10-12 00:05:47,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28292 conditions, 12745 events. 8669/12745 cut-off events. For 2618/3543 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 80872 event pairs, 7000 based on Foata normal form. 309/10190 useless extension candidates. Maximal degree in co-relation 18143. Up to 11366 conditions per place. [2024-10-12 00:05:47,127 INFO L140 encePairwiseOnDemand]: 60/62 looper letters, 35 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2024-10-12 00:05:47,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 57 transitions, 231 flow [2024-10-12 00:05:47,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:05:47,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:05:47,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-10-12 00:05:47,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-10-12 00:05:47,132 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 161 flow. Second operand 3 states and 106 transitions. [2024-10-12 00:05:47,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 57 transitions, 231 flow [2024-10-12 00:05:47,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:47,140 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 158 flow [2024-10-12 00:05:47,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-10-12 00:05:47,142 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -2 predicate places. [2024-10-12 00:05:47,142 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 158 flow [2024-10-12 00:05:47,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 00:05:47,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:47,143 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:47,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 00:05:47,144 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:05:47,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:47,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1307267654, now seen corresponding path program 1 times [2024-10-12 00:05:47,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:47,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460032652] [2024-10-12 00:05:47,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:47,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:47,203 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 00:05:47,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:47,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460032652] [2024-10-12 00:05:47,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460032652] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:47,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:47,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:05:47,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718495197] [2024-10-12 00:05:47,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:47,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:05:47,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:47,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:05:47,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:05:47,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-12 00:05:47,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 00:05:47,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:47,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-12 00:05:47,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:48,577 INFO L124 PetriNetUnfolderBase]: 10041/16267 cut-off events. [2024-10-12 00:05:48,577 INFO L125 PetriNetUnfolderBase]: For 2851/3956 co-relation queries the response was YES. [2024-10-12 00:05:48,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33977 conditions, 16267 events. 10041/16267 cut-off events. For 2851/3956 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 118347 event pairs, 3132 based on Foata normal form. 518/13751 useless extension candidates. Maximal degree in co-relation 33967. Up to 9227 conditions per place. [2024-10-12 00:05:48,753 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 57 selfloop transitions, 2 changer transitions 1/81 dead transitions. [2024-10-12 00:05:48,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 81 transitions, 353 flow [2024-10-12 00:05:48,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:05:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:05:48,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-10-12 00:05:48,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6935483870967742 [2024-10-12 00:05:48,757 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 158 flow. Second operand 3 states and 129 transitions. [2024-10-12 00:05:48,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 81 transitions, 353 flow [2024-10-12 00:05:48,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 81 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:48,764 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 173 flow [2024-10-12 00:05:48,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-10-12 00:05:48,766 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 0 predicate places. [2024-10-12 00:05:48,768 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 173 flow [2024-10-12 00:05:48,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 00:05:48,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:48,769 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:48,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:05:48,769 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:05:48,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:48,770 INFO L85 PathProgramCache]: Analyzing trace with hash 890213483, now seen corresponding path program 1 times [2024-10-12 00:05:48,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:48,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995414117] [2024-10-12 00:05:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:48,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:48,871 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 00:05:48,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:48,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995414117] [2024-10-12 00:05:48,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995414117] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:48,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:48,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:05:48,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634852536] [2024-10-12 00:05:48,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:48,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:48,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:48,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:48,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:48,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-12 00:05:48,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 00:05:48,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:48,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-12 00:05:48,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:51,058 INFO L124 PetriNetUnfolderBase]: 16192/26254 cut-off events. [2024-10-12 00:05:51,059 INFO L125 PetriNetUnfolderBase]: For 6017/6535 co-relation queries the response was YES. [2024-10-12 00:05:51,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60268 conditions, 26254 events. 16192/26254 cut-off events. For 6017/6535 co-relation queries the response was YES. Maximal size of possible extension queue 1008. Compared 203188 event pairs, 4801 based on Foata normal form. 617/23107 useless extension candidates. Maximal degree in co-relation 60256. Up to 7579 conditions per place. [2024-10-12 00:05:51,387 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 88 selfloop transitions, 6 changer transitions 0/115 dead transitions. [2024-10-12 00:05:51,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 115 transitions, 529 flow [2024-10-12 00:05:51,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:05:51,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:05:51,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2024-10-12 00:05:51,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7620967741935484 [2024-10-12 00:05:51,389 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 173 flow. Second operand 4 states and 189 transitions. [2024-10-12 00:05:51,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 115 transitions, 529 flow [2024-10-12 00:05:51,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 115 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:51,395 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 229 flow [2024-10-12 00:05:51,396 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2024-10-12 00:05:51,398 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 5 predicate places. [2024-10-12 00:05:51,399 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 229 flow [2024-10-12 00:05:51,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 00:05:51,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:51,399 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:51,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:05:51,400 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:05:51,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:51,402 INFO L85 PathProgramCache]: Analyzing trace with hash 895455385, now seen corresponding path program 1 times [2024-10-12 00:05:51,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:51,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692354753] [2024-10-12 00:05:51,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:51,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:51,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:51,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692354753] [2024-10-12 00:05:51,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692354753] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:51,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332606832] [2024-10-12 00:05:51,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:51,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:51,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:51,485 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 00:05:51,487 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 00:05:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:51,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:05:51,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:51,601 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:05:51,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332606832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:51,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:05:51,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-10-12 00:05:51,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532929867] [2024-10-12 00:05:51,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:51,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:51,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:51,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:51,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:05:51,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-12 00:05:51,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 00:05:51,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:51,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-12 00:05:51,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:53,575 INFO L124 PetriNetUnfolderBase]: 17873/28180 cut-off events. [2024-10-12 00:05:53,576 INFO L125 PetriNetUnfolderBase]: For 23171/24128 co-relation queries the response was YES. [2024-10-12 00:05:53,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71609 conditions, 28180 events. 17873/28180 cut-off events. For 23171/24128 co-relation queries the response was YES. Maximal size of possible extension queue 995. Compared 210749 event pairs, 6139 based on Foata normal form. 1114/26298 useless extension candidates. Maximal degree in co-relation 71593. Up to 12586 conditions per place. [2024-10-12 00:05:54,103 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 62 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2024-10-12 00:05:54,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 460 flow [2024-10-12 00:05:54,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:05:54,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:05:54,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-10-12 00:05:54,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6411290322580645 [2024-10-12 00:05:54,105 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 229 flow. Second operand 4 states and 159 transitions. [2024-10-12 00:05:54,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 460 flow [2024-10-12 00:05:54,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 91 transitions, 454 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:54,149 INFO L231 Difference]: Finished difference. Result has 73 places, 64 transitions, 276 flow [2024-10-12 00:05:54,150 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=73, PETRI_TRANSITIONS=64} [2024-10-12 00:05:54,152 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2024-10-12 00:05:54,152 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 64 transitions, 276 flow [2024-10-12 00:05:54,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 00:05:54,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:54,154 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:54,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 00:05:54,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:54,360 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:05:54,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:54,361 INFO L85 PathProgramCache]: Analyzing trace with hash 2141216796, now seen corresponding path program 1 times [2024-10-12 00:05:54,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:54,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275730247] [2024-10-12 00:05:54,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:54,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:54,424 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 00:05:54,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:54,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275730247] [2024-10-12 00:05:54,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275730247] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:54,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:54,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:05:54,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418453179] [2024-10-12 00:05:54,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:54,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:54,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:54,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:54,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:54,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-12 00:05:54,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 00:05:54,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:54,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-12 00:05:54,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:58,370 INFO L124 PetriNetUnfolderBase]: 33003/48405 cut-off events. [2024-10-12 00:05:58,370 INFO L125 PetriNetUnfolderBase]: For 77049/80712 co-relation queries the response was YES. [2024-10-12 00:05:58,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131382 conditions, 48405 events. 33003/48405 cut-off events. For 77049/80712 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 349981 event pairs, 17991 based on Foata normal form. 1722/46263 useless extension candidates. Maximal degree in co-relation 131363. Up to 33287 conditions per place. [2024-10-12 00:05:58,905 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 105 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2024-10-12 00:05:58,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 127 transitions, 854 flow [2024-10-12 00:05:58,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:05:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:05:58,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-10-12 00:05:58,907 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6653225806451613 [2024-10-12 00:05:58,907 INFO L175 Difference]: Start difference. First operand has 73 places, 64 transitions, 276 flow. Second operand 4 states and 165 transitions. [2024-10-12 00:05:58,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 127 transitions, 854 flow [2024-10-12 00:05:59,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 127 transitions, 793 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:59,017 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 284 flow [2024-10-12 00:05:59,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2024-10-12 00:05:59,018 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2024-10-12 00:05:59,019 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 284 flow [2024-10-12 00:05:59,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 00:05:59,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:59,019 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:59,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 00:05:59,020 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:05:59,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:59,021 INFO L85 PathProgramCache]: Analyzing trace with hash 796679469, now seen corresponding path program 1 times [2024-10-12 00:05:59,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:59,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623555979] [2024-10-12 00:05:59,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:59,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:59,078 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 00:05:59,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:59,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623555979] [2024-10-12 00:05:59,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623555979] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:59,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:59,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:05:59,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382754972] [2024-10-12 00:05:59,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:59,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:59,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:59,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:59,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:59,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-12 00:05:59,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 00:05:59,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:59,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-12 00:05:59,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:05,102 INFO L124 PetriNetUnfolderBase]: 46196/70623 cut-off events. [2024-10-12 00:06:05,103 INFO L125 PetriNetUnfolderBase]: For 75299/83305 co-relation queries the response was YES. [2024-10-12 00:06:05,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189939 conditions, 70623 events. 46196/70623 cut-off events. For 75299/83305 co-relation queries the response was YES. Maximal size of possible extension queue 2129. Compared 560775 event pairs, 23447 based on Foata normal form. 3489/67823 useless extension candidates. Maximal degree in co-relation 189918. Up to 43912 conditions per place. [2024-10-12 00:06:05,790 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 109 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2024-10-12 00:06:05,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 132 transitions, 812 flow [2024-10-12 00:06:05,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:05,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-10-12 00:06:05,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6733870967741935 [2024-10-12 00:06:05,792 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 284 flow. Second operand 4 states and 167 transitions. [2024-10-12 00:06:05,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 132 transitions, 812 flow [2024-10-12 00:06:05,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 132 transitions, 803 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:05,915 INFO L231 Difference]: Finished difference. Result has 81 places, 70 transitions, 310 flow [2024-10-12 00:06:05,916 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=81, PETRI_TRANSITIONS=70} [2024-10-12 00:06:05,916 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 16 predicate places. [2024-10-12 00:06:05,917 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 70 transitions, 310 flow [2024-10-12 00:06:05,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 00:06:05,917 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:05,917 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:05,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 00:06:05,918 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:06:05,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:05,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1539180604, now seen corresponding path program 1 times [2024-10-12 00:06:05,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:05,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093662567] [2024-10-12 00:06:05,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:05,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:05,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:05,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:05,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093662567] [2024-10-12 00:06:05,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093662567] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:05,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249810062] [2024-10-12 00:06:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:05,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:05,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:05,973 INFO L229 MonitoredProcess]: Starting monitored process 3 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 00:06:05,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:06:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:06,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:06:06,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:06,069 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:06:06,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249810062] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:06,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:06:06,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-12 00:06:06,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131253830] [2024-10-12 00:06:06,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:06,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:06:06,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:06,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:06:06,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:06:06,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-12 00:06:06,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 70 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 00:06:06,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:06,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-12 00:06:06,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:12,034 INFO L124 PetriNetUnfolderBase]: 41296/63103 cut-off events. [2024-10-12 00:06:12,034 INFO L125 PetriNetUnfolderBase]: For 68015/75284 co-relation queries the response was YES. [2024-10-12 00:06:12,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180927 conditions, 63103 events. 41296/63103 cut-off events. For 68015/75284 co-relation queries the response was YES. Maximal size of possible extension queue 1953. Compared 493260 event pairs, 6313 based on Foata normal form. 4676/62180 useless extension candidates. Maximal degree in co-relation 180904. Up to 20574 conditions per place. [2024-10-12 00:06:12,747 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 153 selfloop transitions, 7 changer transitions 0/179 dead transitions. [2024-10-12 00:06:12,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 179 transitions, 1070 flow [2024-10-12 00:06:12,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:06:12,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:06:12,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 251 transitions. [2024-10-12 00:06:12,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6747311827956989 [2024-10-12 00:06:12,749 INFO L175 Difference]: Start difference. First operand has 81 places, 70 transitions, 310 flow. Second operand 6 states and 251 transitions. [2024-10-12 00:06:12,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 179 transitions, 1070 flow [2024-10-12 00:06:12,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 179 transitions, 1055 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:12,830 INFO L231 Difference]: Finished difference. Result has 84 places, 69 transitions, 317 flow [2024-10-12 00:06:12,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=317, PETRI_PLACES=84, PETRI_TRANSITIONS=69} [2024-10-12 00:06:12,831 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 19 predicate places. [2024-10-12 00:06:12,831 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 69 transitions, 317 flow [2024-10-12 00:06:12,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 00:06:12,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:12,832 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-12 00:06:12,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 00:06:13,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:13,033 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:06:13,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:13,033 INFO L85 PathProgramCache]: Analyzing trace with hash 469958905, now seen corresponding path program 1 times [2024-10-12 00:06:13,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:13,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509358437] [2024-10-12 00:06:13,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:13,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:13,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:13,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509358437] [2024-10-12 00:06:13,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509358437] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:13,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314429651] [2024-10-12 00:06:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:13,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:13,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:13,117 INFO L229 MonitoredProcess]: Starting monitored process 4 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 00:06:13,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 00:06:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:13,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:06:13,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:13,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:13,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:13,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:13,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314429651] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:13,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:13,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-12 00:06:13,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159606183] [2024-10-12 00:06:13,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:13,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:06:13,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:13,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:06:13,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:06:13,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-12 00:06:13,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 69 transitions, 317 flow. Second operand has 12 states, 12 states have (on average 22.666666666666668) internal successors, (272), 12 states have internal predecessors, (272), 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 00:06:13,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:13,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-12 00:06:13,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:27,063 INFO L124 PetriNetUnfolderBase]: 89288/136966 cut-off events. [2024-10-12 00:06:27,063 INFO L125 PetriNetUnfolderBase]: For 188589/204178 co-relation queries the response was YES. [2024-10-12 00:06:27,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405108 conditions, 136966 events. 89288/136966 cut-off events. For 188589/204178 co-relation queries the response was YES. Maximal size of possible extension queue 3091. Compared 1132404 event pairs, 19995 based on Foata normal form. 10198/139487 useless extension candidates. Maximal degree in co-relation 405085. Up to 50228 conditions per place. [2024-10-12 00:06:28,956 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 290 selfloop transitions, 13 changer transitions 0/322 dead transitions. [2024-10-12 00:06:28,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 322 transitions, 2028 flow [2024-10-12 00:06:28,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:06:28,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:06:28,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 439 transitions. [2024-10-12 00:06:28,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7080645161290322 [2024-10-12 00:06:28,958 INFO L175 Difference]: Start difference. First operand has 84 places, 69 transitions, 317 flow. Second operand 10 states and 439 transitions. [2024-10-12 00:06:28,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 322 transitions, 2028 flow [2024-10-12 00:06:29,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 322 transitions, 1998 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-12 00:06:29,288 INFO L231 Difference]: Finished difference. Result has 92 places, 78 transitions, 385 flow [2024-10-12 00:06:29,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=385, PETRI_PLACES=92, PETRI_TRANSITIONS=78} [2024-10-12 00:06:29,289 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 27 predicate places. [2024-10-12 00:06:29,289 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 385 flow [2024-10-12 00:06:29,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.666666666666668) internal successors, (272), 12 states have internal predecessors, (272), 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 00:06:29,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:29,289 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:29,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 00:06:29,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:29,490 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:06:29,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:29,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1859627763, now seen corresponding path program 1 times [2024-10-12 00:06:29,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:29,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266844126] [2024-10-12 00:06:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:29,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:29,535 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 00:06:29,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:29,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266844126] [2024-10-12 00:06:29,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266844126] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:29,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:29,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:06:29,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679726483] [2024-10-12 00:06:29,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:29,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:06:29,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:29,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:06:29,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:06:29,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-12 00:06:29,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 78 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 00:06:29,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:29,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-12 00:06:29,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:37,472 INFO L124 PetriNetUnfolderBase]: 54912/83430 cut-off events. [2024-10-12 00:06:37,472 INFO L125 PetriNetUnfolderBase]: For 146269/156498 co-relation queries the response was YES. [2024-10-12 00:06:37,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259358 conditions, 83430 events. 54912/83430 cut-off events. For 146269/156498 co-relation queries the response was YES. Maximal size of possible extension queue 2166. Compared 650020 event pairs, 40387 based on Foata normal form. 3628/81033 useless extension candidates. Maximal degree in co-relation 259333. Up to 70976 conditions per place. [2024-10-12 00:06:38,406 INFO L140 encePairwiseOnDemand]: 60/62 looper letters, 51 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2024-10-12 00:06:38,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 77 transitions, 485 flow [2024-10-12 00:06:38,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:06:38,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:06:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-10-12 00:06:38,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2024-10-12 00:06:38,407 INFO L175 Difference]: Start difference. First operand has 92 places, 78 transitions, 385 flow. Second operand 3 states and 104 transitions. [2024-10-12 00:06:38,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 77 transitions, 485 flow