./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.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 1ac00c9540bbc99a446c9cb6c02e180c3a0ad4fef3c182d14bafdc7ea871c54c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:03:44,911 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:03:44,971 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:03:44,976 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:03:44,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:03:45,001 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:03:45,001 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:03:45,001 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:03:45,002 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:03:45,003 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:03:45,003 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:03:45,003 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:03:45,004 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:03:45,004 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:03:45,004 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:03:45,004 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:03:45,005 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:03:45,005 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:03:45,005 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:03:45,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:03:45,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:03:45,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:03:45,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:03:45,009 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:03:45,009 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:03:45,009 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:03:45,009 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:03:45,009 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:03:45,010 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:03:45,010 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:03:45,010 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:03:45,010 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:03:45,010 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:03:45,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:03:45,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:03:45,011 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:03:45,011 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:03:45,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:03:45,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:03:45,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:03:45,012 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:03:45,015 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:03:45,015 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:03:45,015 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:03:45,015 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ac00c9540bbc99a446c9cb6c02e180c3a0ad4fef3c182d14bafdc7ea871c54c [2024-10-12 00:03:45,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:03:45,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:03:45,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:03:45,254 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:03:45,254 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:03:45,255 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-10-12 00:03:46,552 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:03:46,709 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:03:46,710 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-10-12 00:03:46,716 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/884db8014/f8a0a976e73e4e4695a8bbdcf23e2b93/FLAG5e13d84dc [2024-10-12 00:03:47,118 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/884db8014/f8a0a976e73e4e4695a8bbdcf23e2b93 [2024-10-12 00:03:47,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:03:47,121 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:03:47,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:03:47,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:03:47,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:03:47,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:03:47" (1/1) ... [2024-10-12 00:03:47,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671ce831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:47, skipping insertion in model container [2024-10-12 00:03:47,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:03:47" (1/1) ... [2024-10-12 00:03:47,150 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:03:47,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:03:47,333 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:03:47,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:03:47,380 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:03:47,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:47 WrapperNode [2024-10-12 00:03:47,381 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:03:47,382 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:03:47,382 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:03:47,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:03:47,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:47" (1/1) ... [2024-10-12 00:03:47,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:47" (1/1) ... [2024-10-12 00:03:47,413 INFO L138 Inliner]: procedures = 21, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2024-10-12 00:03:47,414 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:03:47,414 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:03:47,415 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:03:47,415 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:03:47,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:47" (1/1) ... [2024-10-12 00:03:47,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:47" (1/1) ... [2024-10-12 00:03:47,431 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:47" (1/1) ... [2024-10-12 00:03:47,444 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 00:03:47,444 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:47" (1/1) ... [2024-10-12 00:03:47,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:47" (1/1) ... [2024-10-12 00:03:47,448 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:47" (1/1) ... [2024-10-12 00:03:47,452 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:47" (1/1) ... [2024-10-12 00:03:47,453 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:47" (1/1) ... [2024-10-12 00:03:47,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:47" (1/1) ... [2024-10-12 00:03:47,455 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:03:47,456 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:03:47,456 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:03:47,456 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:03:47,457 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:47" (1/1) ... [2024-10-12 00:03:47,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:03:47,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:03:47,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:03:47,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:03:47,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:03:47,532 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:03:47,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:03:47,533 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:03:47,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:03:47,533 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:03:47,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:03:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:03:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:03:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:03:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:03:47,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:03:47,537 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:03:47,621 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:03:47,623 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:03:47,876 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:03:47,876 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:03:48,022 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:03:48,022 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-12 00:03:48,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:03:48 BoogieIcfgContainer [2024-10-12 00:03:48,023 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:03:48,025 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:03:48,025 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:03:48,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:03:48,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:03:47" (1/3) ... [2024-10-12 00:03:48,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5548a579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:03:48, skipping insertion in model container [2024-10-12 00:03:48,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:47" (2/3) ... [2024-10-12 00:03:48,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5548a579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:03:48, skipping insertion in model container [2024-10-12 00:03:48,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:03:48" (3/3) ... [2024-10-12 00:03:48,032 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2024-10-12 00:03:48,048 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:03:48,048 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-12 00:03:48,048 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:03:48,093 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-12 00:03:48,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 50 transitions, 121 flow [2024-10-12 00:03:48,151 INFO L124 PetriNetUnfolderBase]: 6/47 cut-off events. [2024-10-12 00:03:48,152 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-12 00:03:48,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 6/47 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 149 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-10-12 00:03:48,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 50 transitions, 121 flow [2024-10-12 00:03:48,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 45 transitions, 105 flow [2024-10-12 00:03:48,169 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:03:48,175 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;@5822a26b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:03:48,176 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-10-12 00:03:48,182 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:03:48,182 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2024-10-12 00:03:48,182 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:03:48,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:48,187 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 00:03:48,188 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:03:48,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:48,192 INFO L85 PathProgramCache]: Analyzing trace with hash -362756467, now seen corresponding path program 1 times [2024-10-12 00:03:48,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:48,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473049066] [2024-10-12 00:03:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:48,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:48,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:48,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473049066] [2024-10-12 00:03:48,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473049066] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:48,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:48,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:03:48,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574710178] [2024-10-12 00:03:48,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:48,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:03:48,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:48,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:03:48,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:03:48,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-12 00:03:48,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:48,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:48,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-12 00:03:48,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:49,197 INFO L124 PetriNetUnfolderBase]: 6040/8174 cut-off events. [2024-10-12 00:03:49,199 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-10-12 00:03:49,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15720 conditions, 8174 events. 6040/8174 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 43576 event pairs, 1250 based on Foata normal form. 0/4381 useless extension candidates. Maximal degree in co-relation 14902. Up to 7243 conditions per place. [2024-10-12 00:03:49,271 INFO L140 encePairwiseOnDemand]: 31/50 looper letters, 42 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2024-10-12 00:03:49,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 247 flow [2024-10-12 00:03:49,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:03:49,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:03:49,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-10-12 00:03:49,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7066666666666667 [2024-10-12 00:03:49,284 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 105 flow. Second operand 3 states and 106 transitions. [2024-10-12 00:03:49,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 247 flow [2024-10-12 00:03:49,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 231 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:03:49,291 INFO L231 Difference]: Finished difference. Result has 47 places, 51 transitions, 165 flow [2024-10-12 00:03:49,293 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2024-10-12 00:03:49,295 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2024-10-12 00:03:49,296 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 165 flow [2024-10-12 00:03:49,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:49,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:49,296 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:49,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:03:49,297 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:03:49,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:49,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1456800313, now seen corresponding path program 1 times [2024-10-12 00:03:49,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:49,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095189140] [2024-10-12 00:03:49,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:49,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:49,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:49,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095189140] [2024-10-12 00:03:49,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095189140] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:49,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:49,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:49,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091627218] [2024-10-12 00:03:49,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:49,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:03:49,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:49,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:03:49,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:03:49,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-12 00:03:49,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:49,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:49,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-12 00:03:49,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:49,804 INFO L124 PetriNetUnfolderBase]: 4027/5730 cut-off events. [2024-10-12 00:03:49,805 INFO L125 PetriNetUnfolderBase]: For 1045/1045 co-relation queries the response was YES. [2024-10-12 00:03:49,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14180 conditions, 5730 events. 4027/5730 cut-off events. For 1045/1045 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 32569 event pairs, 1478 based on Foata normal form. 0/3256 useless extension candidates. Maximal degree in co-relation 6966. Up to 4901 conditions per place. [2024-10-12 00:03:49,860 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 35 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2024-10-12 00:03:49,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 225 flow [2024-10-12 00:03:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:03:49,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:03:49,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-12 00:03:49,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-10-12 00:03:49,864 INFO L175 Difference]: Start difference. First operand has 47 places, 51 transitions, 165 flow. Second operand 3 states and 78 transitions. [2024-10-12 00:03:49,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 225 flow [2024-10-12 00:03:49,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:03:49,868 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 148 flow [2024-10-12 00:03:49,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2024-10-12 00:03:49,869 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-10-12 00:03:49,869 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 148 flow [2024-10-12 00:03:49,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:49,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:49,869 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:49,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 00:03:49,870 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:03:49,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:49,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1456800312, now seen corresponding path program 1 times [2024-10-12 00:03:49,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:49,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112887648] [2024-10-12 00:03:49,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:49,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:49,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:49,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112887648] [2024-10-12 00:03:49,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112887648] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:03:49,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834985635] [2024-10-12 00:03:49,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:49,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:03:49,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:03:49,978 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 00:03:49,979 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 00:03:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:50,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:03:50,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:03:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:50,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:03:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:50,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834985635] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:03:50,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:03:50,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-12 00:03:50,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216852105] [2024-10-12 00:03:50,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:03:50,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 00:03:50,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:50,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 00:03:50,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-12 00:03:50,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-12 00:03:50,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:50,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:50,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-12 00:03:50,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:51,171 INFO L124 PetriNetUnfolderBase]: 9573/13756 cut-off events. [2024-10-12 00:03:51,171 INFO L125 PetriNetUnfolderBase]: For 2676/2676 co-relation queries the response was YES. [2024-10-12 00:03:51,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33365 conditions, 13756 events. 9573/13756 cut-off events. For 2676/2676 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 79165 event pairs, 483 based on Foata normal form. 0/9666 useless extension candidates. Maximal degree in co-relation 33357. Up to 7387 conditions per place. [2024-10-12 00:03:51,250 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 99 selfloop transitions, 37 changer transitions 0/148 dead transitions. [2024-10-12 00:03:51,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 148 transitions, 721 flow [2024-10-12 00:03:51,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:03:51,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:03:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 263 transitions. [2024-10-12 00:03:51,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7514285714285714 [2024-10-12 00:03:51,257 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 148 flow. Second operand 7 states and 263 transitions. [2024-10-12 00:03:51,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 148 transitions, 721 flow [2024-10-12 00:03:51,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 148 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:03:51,262 INFO L231 Difference]: Finished difference. Result has 54 places, 78 transitions, 467 flow [2024-10-12 00:03:51,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=467, PETRI_PLACES=54, PETRI_TRANSITIONS=78} [2024-10-12 00:03:51,263 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 5 predicate places. [2024-10-12 00:03:51,264 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 78 transitions, 467 flow [2024-10-12 00:03:51,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:51,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:51,264 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:51,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 00:03:51,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:03:51,469 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:03:51,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:51,470 INFO L85 PathProgramCache]: Analyzing trace with hash 35275578, now seen corresponding path program 1 times [2024-10-12 00:03:51,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:51,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579016212] [2024-10-12 00:03:51,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:51,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:51,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:51,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579016212] [2024-10-12 00:03:51,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579016212] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:51,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:51,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:51,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705250665] [2024-10-12 00:03:51,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:51,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:51,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:51,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:51,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:51,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-12 00:03:51,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 78 transitions, 467 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:51,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:51,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-12 00:03:51,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:52,645 INFO L124 PetriNetUnfolderBase]: 9871/14216 cut-off events. [2024-10-12 00:03:52,646 INFO L125 PetriNetUnfolderBase]: For 31685/31685 co-relation queries the response was YES. [2024-10-12 00:03:52,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50174 conditions, 14216 events. 9871/14216 cut-off events. For 31685/31685 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 82698 event pairs, 1143 based on Foata normal form. 49/13085 useless extension candidates. Maximal degree in co-relation 50161. Up to 12016 conditions per place. [2024-10-12 00:03:52,739 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 81 selfloop transitions, 19 changer transitions 0/112 dead transitions. [2024-10-12 00:03:52,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 112 transitions, 817 flow [2024-10-12 00:03:52,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:52,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-10-12 00:03:52,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-12 00:03:52,741 INFO L175 Difference]: Start difference. First operand has 54 places, 78 transitions, 467 flow. Second operand 4 states and 130 transitions. [2024-10-12 00:03:52,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 112 transitions, 817 flow [2024-10-12 00:03:52,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 112 transitions, 780 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-10-12 00:03:52,788 INFO L231 Difference]: Finished difference. Result has 58 places, 90 transitions, 622 flow [2024-10-12 00:03:52,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=622, PETRI_PLACES=58, PETRI_TRANSITIONS=90} [2024-10-12 00:03:52,789 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2024-10-12 00:03:52,790 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 90 transitions, 622 flow [2024-10-12 00:03:52,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:52,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:52,790 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:52,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:03:52,790 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:03:52,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:52,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1159067946, now seen corresponding path program 1 times [2024-10-12 00:03:52,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:52,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223192645] [2024-10-12 00:03:52,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:52,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:52,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:52,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:52,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223192645] [2024-10-12 00:03:52,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223192645] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:52,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:52,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:52,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517888365] [2024-10-12 00:03:52,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:52,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:52,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:52,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:52,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:52,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-12 00:03:52,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 90 transitions, 622 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:52,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:52,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-12 00:03:52,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:54,069 INFO L124 PetriNetUnfolderBase]: 11519/16794 cut-off events. [2024-10-12 00:03:54,069 INFO L125 PetriNetUnfolderBase]: For 53567/53567 co-relation queries the response was YES. [2024-10-12 00:03:54,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61163 conditions, 16794 events. 11519/16794 cut-off events. For 53567/53567 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 102548 event pairs, 1329 based on Foata normal form. 943/16369 useless extension candidates. Maximal degree in co-relation 61147. Up to 12931 conditions per place. [2024-10-12 00:03:54,243 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 93 selfloop transitions, 28 changer transitions 0/133 dead transitions. [2024-10-12 00:03:54,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 133 transitions, 1087 flow [2024-10-12 00:03:54,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:54,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-10-12 00:03:54,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71 [2024-10-12 00:03:54,247 INFO L175 Difference]: Start difference. First operand has 58 places, 90 transitions, 622 flow. Second operand 4 states and 142 transitions. [2024-10-12 00:03:54,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 133 transitions, 1087 flow [2024-10-12 00:03:54,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 133 transitions, 1047 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-10-12 00:03:54,339 INFO L231 Difference]: Finished difference. Result has 62 places, 111 transitions, 924 flow [2024-10-12 00:03:54,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=924, PETRI_PLACES=62, PETRI_TRANSITIONS=111} [2024-10-12 00:03:54,341 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2024-10-12 00:03:54,342 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 111 transitions, 924 flow [2024-10-12 00:03:54,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:54,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:54,342 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:54,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:03:54,345 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:03:54,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:54,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1456800279, now seen corresponding path program 1 times [2024-10-12 00:03:54,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:54,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586228897] [2024-10-12 00:03:54,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:54,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:54,400 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 00:03:54,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:54,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586228897] [2024-10-12 00:03:54,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586228897] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:03:54,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472708577] [2024-10-12 00:03:54,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:54,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:03:54,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:03:54,404 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 00:03:54,406 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 00:03:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:54,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:03:54,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:03:54,464 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 00:03:54,464 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:03:54,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472708577] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:54,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:03:54,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-10-12 00:03:54,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931676178] [2024-10-12 00:03:54,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:54,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:54,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:54,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:54,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:03:54,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-12 00:03:54,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 111 transitions, 924 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:54,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:54,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-12 00:03:54,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:56,506 INFO L124 PetriNetUnfolderBase]: 17271/25551 cut-off events. [2024-10-12 00:03:56,506 INFO L125 PetriNetUnfolderBase]: For 152971/152971 co-relation queries the response was YES. [2024-10-12 00:03:56,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108372 conditions, 25551 events. 17271/25551 cut-off events. For 152971/152971 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 164208 event pairs, 1779 based on Foata normal form. 1288/24878 useless extension candidates. Maximal degree in co-relation 108353. Up to 13545 conditions per place. [2024-10-12 00:03:56,737 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 130 selfloop transitions, 40 changer transitions 0/182 dead transitions. [2024-10-12 00:03:56,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 182 transitions, 1815 flow [2024-10-12 00:03:56,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:56,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-10-12 00:03:56,739 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.73 [2024-10-12 00:03:56,739 INFO L175 Difference]: Start difference. First operand has 62 places, 111 transitions, 924 flow. Second operand 4 states and 146 transitions. [2024-10-12 00:03:56,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 182 transitions, 1815 flow [2024-10-12 00:03:56,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 182 transitions, 1749 flow, removed 33 selfloop flow, removed 0 redundant places. [2024-10-12 00:03:56,913 INFO L231 Difference]: Finished difference. Result has 67 places, 144 transitions, 1481 flow [2024-10-12 00:03:56,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1481, PETRI_PLACES=67, PETRI_TRANSITIONS=144} [2024-10-12 00:03:56,914 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 18 predicate places. [2024-10-12 00:03:56,914 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 144 transitions, 1481 flow [2024-10-12 00:03:56,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:56,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:56,915 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:56,929 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 00:03:57,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:03:57,116 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:03:57,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:57,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1428690364, now seen corresponding path program 1 times [2024-10-12 00:03:57,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:57,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114619488] [2024-10-12 00:03:57,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:57,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:57,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:57,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114619488] [2024-10-12 00:03:57,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114619488] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:03:57,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660824978] [2024-10-12 00:03:57,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:57,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:03:57,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:03:57,184 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 00:03:57,185 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 00:03:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:57,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:03:57,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:03:57,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:57,274 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:03:57,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:57,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660824978] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:03:57,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:03:57,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2024-10-12 00:03:57,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163742119] [2024-10-12 00:03:57,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:03:57,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 00:03:57,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:57,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 00:03:57,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=47, Unknown=0, NotChecked=0, Total=90 [2024-10-12 00:03:57,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-12 00:03:57,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 144 transitions, 1481 flow. Second operand has 10 states, 10 states have (on average 17.3) internal successors, (173), 10 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:57,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:57,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-12 00:03:57,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:04:08,467 INFO L124 PetriNetUnfolderBase]: 78250/116850 cut-off events. [2024-10-12 00:04:08,468 INFO L125 PetriNetUnfolderBase]: For 1155297/1155297 co-relation queries the response was YES. [2024-10-12 00:04:08,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547950 conditions, 116850 events. 78250/116850 cut-off events. For 1155297/1155297 co-relation queries the response was YES. Maximal size of possible extension queue 1690. Compared 833126 event pairs, 2519 based on Foata normal form. 5813/115226 useless extension candidates. Maximal degree in co-relation 547927. Up to 51377 conditions per place. [2024-10-12 00:04:09,810 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 290 selfloop transitions, 366 changer transitions 0/668 dead transitions. [2024-10-12 00:04:09,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 668 transitions, 8437 flow [2024-10-12 00:04:09,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:04:09,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:04:09,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 382 transitions. [2024-10-12 00:04:09,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.764 [2024-10-12 00:04:09,812 INFO L175 Difference]: Start difference. First operand has 67 places, 144 transitions, 1481 flow. Second operand 10 states and 382 transitions. [2024-10-12 00:04:09,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 668 transitions, 8437 flow [2024-10-12 00:04:14,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 668 transitions, 7771 flow, removed 333 selfloop flow, removed 0 redundant places. [2024-10-12 00:04:14,535 INFO L231 Difference]: Finished difference. Result has 82 places, 504 transitions, 7224 flow [2024-10-12 00:04:14,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7224, PETRI_PLACES=82, PETRI_TRANSITIONS=504} [2024-10-12 00:04:14,538 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 33 predicate places. [2024-10-12 00:04:14,538 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 504 transitions, 7224 flow [2024-10-12 00:04:14,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.3) internal successors, (173), 10 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:04:14,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:04:14,538 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:04:14,551 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 00:04:14,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:04:14,743 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-12 00:04:14,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:14,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1399317895, now seen corresponding path program 1 times [2024-10-12 00:04:14,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:14,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748138054] [2024-10-12 00:04:14,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:14,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:14,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:14,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748138054] [2024-10-12 00:04:14,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748138054] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:04:14,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33144106] [2024-10-12 00:04:14,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:14,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:04:14,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:04:14,845 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:04:14,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 00:04:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:14,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:04:14,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:04:14,919 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:14,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:04:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:14,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33144106] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:04:14,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:04:14,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-12 00:04:14,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843724380] [2024-10-12 00:04:14,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:04:14,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 00:04:14,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:14,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 00:04:14,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-10-12 00:04:14,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-12 00:04:14,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 504 transitions, 7224 flow. Second operand has 11 states, 11 states have (on average 17.272727272727273) internal successors, (190), 11 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:04:14,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:14,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-12 00:04:14,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand